It's triples all the way down
Posted at 17:15
This is the second part of a two part post looking at the building blocks of data infrastructure. In part one we looked at definitions of data infrastructure, and the first set of building blocks: identifiers, standards and registers. You should read part one first and then jump back in here.
We’re using the example of weather data to help us think through the different elements of a data infrastructure. In our fictional system we have a network of weather stations installed around the world. The stations are feeding weather observations into a common database. We’ve looked at why its necessary to identify our stations, the role of standards, and the benefits of building registers to help us manage the system.
Technology is obviously part of data infrastructure. In part one we have already introduced several types of technology.
The sensors and components that are used to build the weather stations are also technologies.
The data standards that define how we organise and exchange data are technologies.
The protocols that help us transmit data, like WiFi or telecommunications networks, are technologies.
The APIs that are used to submit data to the global database of observations, or which help us retrieve observations from it, are also technologies.
Unfortunately, I often see some mistaken assumptions that data infrastructure is only about the technologies we use to help us manage and exchange data.
To use an analogy, this is a bit like focusing on tarmac and kerb stones as the defining characteristics of our road infrastructure. These materials are both important and necessary, but are just parts of a larger system. If we focus only on technology it’s easy to overlook the other, more important buildings blocks of data infrastructure.
We should be really clear when we are talking about “data infrastructure”, which encompasses all the building blocks we are discussing here and when we are talking about “infrastructure for data” which focuses just on the technologies we use to collect and manage data.
Technologies evolve and become obsolete. Over time we might choose to use different technologies in our data infrastructure.
What’s important is choosing technologies that ensure our data infrastructure is as reliable, sustainable and as open as possible.
Our data infrastructure is taking shape. We now have a system that consists of weather stations installed around the world, reporting local weather observations into a central database. That dataset is the primary data asset that we will be publishing from our data infrastructure.
We’ve explored the various technologies, data standards and some of the other data assets (registers) that enable the collection and publishing of that data.
We’ve not yet considered the organisations that maintain and govern those assets.
The weather stations themselves will be manufactured and installed by many different organisations around the world. Other organisations might offer services to help maintain and calibrate stations after they are installed.
A National Meteorological Service might take on responsibility for maintaining the network of stations within it’s nation’s borders. The scope of their role will be defined by national legislation and policies. But a commercial organisation might also choose to take on responsibility for running a collection of stations.
In our data infrastructure, the central database of observations will be curated and managed by a single organisation. The (fictional) Global Weather Office. Our Global Weather Office will do more than just manage data assets. It also has a role to play in choosing and defining the data standards that support data collection. And it helps to certify which models of weather station conform to those standards.
Organisations are a key building block of data infrastructure. The organisational models that we choose to govern a data infrastructure and which take responsibility for its sustainability, are an important part of its design.
The value of the weather observations comes from their use. E.g. as input into predictive models to create weather forecasts and other services. Many organisations will use the observation data provided by our data infrastructure to create a range of products and services. E.g. national weather forecasts, or targeted advice for farmers that is delivered via farm management systems. The data might also be used by researchers. Or by environmental policy-makers to inform their work.
Mapping out the ecosystem of organisations that operate and benefit from our data infrastructure will help us to understand the roles and responsibilities of each organisation. It will also help clarify how and where value is being created.
With so many different organisations operating, governing and benefiting from our data infrastructure we need to think about how they are supported in creating value from it.
To do this we will need to produce a range of guidance and policies, for example:
Guidance and policies are an important building block that help to shape the ecosystem that supports and benefits from our data infrastructure.
A strong data infrastructure will have policies and governance that will support equitable access to the system. Making infrastructure as open as possible will help to ensure that as many organisations as possible have the opportunity to use the assets it provides, and have equal opportunities to contribute to its operation.
Why do we collect weather data? We do it to help create weather forecasts, monitor climate change and a whole host of other reasons. We want the data to be used to make decisions.
Many different people and organisations might benefit from the weather data we are providing. A commuter might just want to know whether to take an umbrella to work. A farmer might want help in choosing which crops to plant. Or an engineer planning a difficult construction task made need to know the expected weather conditions.
Outside of the organisations who are directly interacting with our data infrastructure there will be a number of communities, made up of both individuals and organisations who will benefit from the products and services made with the data assets it provides. Communities are the final building block of our data infrastructure.
These communities will be relying on our data infrastructure to plan their daily lives, activities and to make business decisions. But they may not realise it. Good infrastructure is boring and reliable.
In his book on the social value of infrastructure, Brett Frischmann refers to infrastructure as “shared means to many ends”. Governing and maintaining infrastructure requires us to recognise this variety of interests and make choices that balances a variety of needs.
The choices we make about who has access to our data infrastructure, and how it will be made sustainable, will be important in ensuring that value can be created from it over the long-term.
To summarise, our building blocks of data infrastructure are:
The building blocks have different sizes. Identifiers are a well-understood technical concept. Organisations, policies and communities are more complex, and perhaps less well-defined.
Understanding their relationships, and how they benefit from being more open, requires us to engage in some systems thinking. By identifying each building block I hope we can start to have deeper conversations about the systems we are building.
Over time we might be able to tease out more specific building blocks. We might be able to identify important organisational roles that occur as repeated patterns across different types of infrastructure. Or specific organisational models that have been found to be successful in creating trusted, sustainable infrastructures. Over time we might also identify key types of policy and guidance that are important elements of ensuring that a data infrastructure is successful. These are research questions that can help us refine our understanding of data as infrastructure.
There are other aspects of data infrastructure which we have not explicitly explored here. For example ethics and trust. This is because ethics is not a building block. It’s a way of working that will enable fairer, equitable access to data infrastructure by a variety of communities. Ethics should inform every decision and every activity we take to design, build and maintain our data infrastructure.
Trust is also not a building block. Trust emerges from how we operate and maintain our data infrastructures. Trust is earned, rather than designed into a system.
I’ve written these posts to help me work through some of my thoughts around data infrastructure. There’s a lot more to be said about the different building blocks. And choosing other examples, e.g. that focus on data infrastructure that involves sharing of personal data like medical records, might better highlight some different characteristics.
Let me know what you think of this breakdown. Is it useful? Do you think I’ve missed some building blocks? Leave a comment or tweet me your thoughts.
Thanks to Peter Wells and Jeni Tennison for feedback and suggestions that have helped me write these posts.
Posted at 08:30
Data is a vital form of infrastructure for our societies and our economies. When we think about infrastructure we usually think of physical things like roads and railways.
But there are broader definitions of infrastructure that include less tangible things. Like ideas or the internet.
It is important to recognise that there is more to “infrastructure” than just roads and railways. Otherwise there is a risk that we, as a society, won’t invest the necessary time or effort in building, maintaining and governing that infrastructure. The decisions we make about Infrastructure are important because infrastructure helps to shape our societies.
To help explore the idea of data as infrastructure, I want to look at the various building blocks that make up a specific example of a data infrastructure. My hope is that this will help to make it clearer that “data infrastructure” is about more than just technology. As we will see the technical infrastructure we use to manage data is just one component of data infrastructure.
The example we will use is greatly simplified and is partly fictionalised, but it is essentially a real example: we’re going to look at weather data infrastructure.
I’ve written about weather data infrastructure before. It’s a really interesting example to explore in this context because:
Weather data is usually open data, or at least public. But the building blocks we will outline here apply equally well to data from across the data spectrum. In a follow-up post I may explore a more complex example that illustrates a different type of data infrastructure, e.g. one for medical research that relies on researchers having access to medical records.
In the following sections we’ll look at the different building blocks that are important in building a global weather data infrastructure. The real infrastructure is much more complex.
Some of the building blocks are a bit fuzzy and have multiple roles to play in our infrastructure. But that’s fine. The world isn’t a neat and tidy place that we can always reduce to simpler components.
Before we begin, let’s introduce a definition of data infrastructure:
A data infrastructure consists of data assets, the standards and technologies that are used to curate and provide access to those assets, the guidance and policies that inform their use and management, the organisations that govern the data infrastructure, and the communities involved in maintaining it, or are impacted by decisions that are made using those data assets.
There are a lot of moving parts there. And there are lots of things to say about each of them. For now let’s focus on the individual building blocks to explore ways in which they fit together.
Imagine we’re planning to build a global network of weather stations. Each station will be regularly recording the local temperature and rainfall. In our system we’ll be collecting all of these readings into a global dataset of weather observations.
So that we know which observations have been reported by which weather station, we need a unique reference for each of them.
We can’t just use the name of the town or village in which the station has been installed as that reference. There are Birminghams in both the UK and the US, for example. We might also need to move and reinstall weather stations over time, but may need to track information about them, such as when they were installed or services. So we need a global identifier that is more reliable than just a name.
By assigning each weather station a unique identifier, we can then attached additional data to it. Like it’s current location. We can also associate the identifier with every temperature and rainfall observation, so that we know which station reported that data.
Identifiers are the first building block of our data infrastructure.
Identifiers are deceptively simple. They’re just a number or a code, right? But there’s a lot to say about them, such as how they are assigned or are formatted. It can be hard to create good identifiers.
When identifiers are open, for anyone to use in their data, they have a role to play that goes beyond just providing unique references in a database. They can also help to create network effects that encourage publication of additional data.
Our weather stations are recording temperature and rainfall. We’ll measure temperature in degrees Centigrade and rainfall in millimetres. Both of these are standard units of measurement.
Standards are our second building block.
Standards are documented, reusable agreements. They help us collect and organise data in consistent ways, and make it easier to work with data from different sources.
Some standards, like units of measurement are global and are used in many different ways. But some standard might be only be relevant to specific communities or systems.
In our weather data infrastructure, we will need to standardise some other aspects of how we plan to collect weather data.
For example, let’s assume that our weather stations are recording data every half an hour. Every thirty minutes a station will record a new temperature reading. But is it recording the temperature at that specific moment in time, or should it report the average temperature over the last thirty minutes? There may be advantages in doing one or the other.
If we don’t standardise some of our data collection practices, then weather stations created by different manufacturers might record data differently. This will affect the quality of our data.
Every data infrastructure will rely on a wide variety of different standards. Some standards support consistent measurement and data collection. Others help us to exchange data more effectively.
Our weather stations will need to record the data they collect and automatically upload it to a service that helps us build our global database. In a real system there are a number of different ways in which we might want a weather station to report data, to provide a variety of ways in which it could be aggregated and reused. But to simplify things, we’ll assume they just upload their data to a centralised service. Centralised data collection is problematic for a number of reasons, but that’s a topic for another article.
To help us define how the weather stations will upload their data we will need to pick a standard data format that will define the syntax for recording data in a machine-readable form. Let’s assume that we decide to use a simple CSV (comma-separated values) format.
Each station will produce a CSV file that contains one row for every half-hourly observation. Each row will consist of a station identifier, a time stamp for the recordings, a temperate reading and a rainfall reading.
The time stamps can be recorded using ISO 8601, which is an international standard for formatting dates and times. Helpfully we can include time zones, which will be essential for reporting time accurately across our global network of weather stations.
We also need to ensure that the order in which the four fields will be reported is consistent, or that the headers in the CSV file clearly identify what is contained in each column. Again, we might be using weather stations from multiple manufacturers and need data to be recorded consistently. Some stations might also include additional sensors, e.g. to record wind speed. So ideally our standard will be extensible to support that additional data. Taking time to design and standardise our CSV format will make data aggregation easier.
Every time we define how to collect, manage or share data within a system, we are creating agreements that will help ensure that everyone involved in those processes can be sure that those tasks are carried out in consistent ways. When we reuse existing standards, rather than creating bespoke versions, we can benefit from the work of thousands of different specialists across a variety of industries.
Sometimes though we do need to define a new standard, like the order of the columns in our specific type of CSV file. But where possible we should approach this by building on existing standards as much as possible.
To help us manage our network of weather stations it will be useful to record where each of them has been installed. It would also be helpful to record when they were installed. Then we can figure out when they might need to be re-calibrated or replaced and send some out to do the necessary work.
To do this, we can create a dataset, that lists the identifier, location, model and installation date of every weather station.
This type of dataset a register.
Registers are lists of important data. They have multiple uses, but are most frequently used to help us improve the quality of our data reporting.
For example we can use the above register to confirm that we’re regularly receiving data from every station on the network. When a station is installed it will need to get added to the register. We might give the company installing the station permission to do that, to help us maintain the register.
We can also use the register to determine if we have a good geographic spread of stations, to help us assess and improve the coverage and quality of the observations we’re collecting. The register is also useful for anyone using our global dataset so they can see how the dataset has been collected over time. Registers should be as open as possible.
There are other types of register that might be useful for governing our data infrastructure. For example we might create a register that lists all of the models of weather station that have been certified to comply with our preferred data standards.
We can use that register to help us make decisions about how to replace stations when they fail. A register can also help provide an incentive for the manufacturers of weather stations to conform to our chosen standards. If they’re not on the list, then we might not buy their products.
In Part 2 of this post we’ll look at others aspects of data infrastructure, including technology, organisations and policies. Thanks to Peter Wells and Jeni Tennison for feedback and suggestions that have helped me write these posts.
Posted at 08:30
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Posted at 11:01
I’ve just finished reading The Checklist Manifesto by Atul Gawande (Cancer Research UK affiliate link). It’s been on my reading list for a while. In my work I’ve written quite a few checklists to help capture best practice or to provide advice. So I was curious about whether I could learn something about creating better checklists.
I wanted to write down a few reflections whilst they’re still fresh in my mind.
The book explores the use of checklists in medicine, aviation and to a lesser extent in business. Checklists aren’t to-do lists. They are a tool to help reduce risk, uncertainty and failure. Gawande uses ample anecdotes, supported by evidence from real-world studies, to illustrate how effective a simple checklist can be. They routinely save people’s lives during surgeries and are a key contributor to the safety of modern aviation.
Gawande explains how checklists allow teams to perform better in complex situations. They protect against individual fallibility, and can help to transfer best practice and research into operational use. He explains that checklists aren’t a teaching tool. They are a means of imposing discipline on a team. Their goal is to improve outcomes.
He also explains why he thinks they’re not being used more widely. In particular, he highlights the tendency of professionals to feel like they’re being undermined or challenged when asked to use simple checklists. A “hero culture” contributes to this problem, something that is very evident in surgery. It’s also something that the tech industry struggles with as well.
Gawande explains that checklists help to address this by re-balancing power within teams. For example, by giving nurses the permission to halt a surgical procedure if a checklist hasn’t been completed to their satisfaction. A hero culture might otherwise silence the raising of concerns, or deter team members from pointing out problems as they see them.
The book highlights that a common pattern that occurs in many successful checklists are specific steps to encourage and make time for team communication. These range from simple introductions and a review of responsibilities, through to a walk-through of expected and possible outcomes. These all contribute towards making the team a more effective unit.
Throughout the book I was wondering how to transfer the insight into other areas. Gawande suggests that checklists are useful anywhere that we have multi-disciplinary teams working together on complex tasks. And specifically where those tasks might have complex outcomes that might have serious impacts.
I think there’s probably a lot of examples in the data and digital world where they might be useful.
What if teams working on data science and machine learning had “preflight checklists” that were used not just at the start of a project, but also at the time of launch and beyond? Would they help highlight problems, increase discipline and allow times for missteps or other concerns to be highlighted?
The ODI data ethics canvas, developed by Amanda Smith, Ellen Broad and Peter Wells is not quite a checklist. But it’s a similar type of tool, aiming to address some similar problems. Privacy impact assessments are another example. But perhaps there are other useful aids?
The book also raises wider questions about the approach we take in our societies towards ensuring safe outcomes of our work, research, etc. There is often too much focus on the use and application of exciting new research and technologies, and not enough on the discipline required to use them safely and effectively.
In short, are we taking care of one another in the best ways we know how?
There’s some great insight into creating checklists scattered throughout the Manifesto. But ironically, they’re not gathered together into a single list of suggestions.
So, for my own benefit I’ve jotted down some points to reflect on:
Posted at 12:51
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Compound
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Posted at 08:52
We presented, at the recent ELS 2016[0], the speculative results from using SPARQL to analyse implicit dependancy relations in the LISP ecosystem, as embodied in a recent Quicklisp[1] release.
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Posted at 18:31
In a meeting today, I was discussing how and when open geospatial identifiers are useful. I thought this might make a good topic for a blog post in my continuing series of questions about data. So here goes.
An identifier provides an unambiguous reference for something about which we want to collect and publish data. That thing might be a road, a school, a parcel of land or a bus stop.
If we publish a dataset that contains some data about “Westminster” then, without some additional documentation, a user of that dataset won’t know whether the data is about a tube station, the Parliamentary Constituency, a company based in Hayes or a school.
If we have identifiers for all of those different things, then we can use the identifiers in our data. This lets us be confident that we are talking about the same things. Publishing data about “940GZZLUWSM” makes it pretty clear that we’re referring to a specific tube station.
If data publishers use the same sets of identifiers, then we can start to easily combine your dataset on the wheelchair accessibility of tube stations, with my dataset of tube station locations and Transport for London’s transit data. So we can build an application that will help people in wheelchairs make better decisions about how to move around London.
To help us publish datasets that use the same identifiers, there are a few things that we repeatedly need to do.
For example it’s common to have to lookup an identifier based on the name of the thing we’re describing. E.g. what’s the code for Westminster tube station? We often need to find information about an identifier we’ve found in a dataset. E.g. what’s the name of the tube station identified by 940GZZLUWSM? And where is it?
When we’re working with geospatial data we often need to find identifiers based on a physical location. For example, based on a latitude and longitude:
It can be helpful if these repeated tasks are turned into specialised services (APIs) that make it easier to perform them on-demand. The alternative is that we all have to download and index the necessary datasets ourselves.
Choosing which identifiers to use in a dataset is an important part of creating agreements around how we publish data. We call those agreements data standards.
The more datasets that use the same set of identifiers, the easier it becomes to combine those datasets together, in various combinations that will help to solve a range of problems. To put it another way, using common identifiers helps to generate network effects that make it easier for everyone to publish and use data.
I think it’s true to say that almost every problem that we might try and solve with better use of data requires the combination of several different datasets. Some of those datasets might come from the private sector. Some of them might come from the public sector. No single organisation always holds all of the data.
This makes it important to be able to share and reuse identifiers across different organisations. And that is why it is important that those identifiers are published under an open licence.
Open licences allow anyone to access, use and share data. Openly licensed identifiers can be used in both open datasets and those that are shared under more restrictive licences. They give data publishers the freedom to choose the correct licence for their dataset, so that it sits at the right point on the data spectrum.
Identifiers that are not published under an open licence remove that choice. Restricted licensing limits the ability of publishers to share their data in the way that makes sense for their business model or application. Restrictive licences cause friction that gets in the way of making data as open as possible.
Open identifiers create open ecosystems. They create opportunities for a variety of business models, products and services. For example intermediaries can create platforms that aggregate and distribute data that has been published by a variety of different organisations.
So, the best identifiers are those that are
Whenever there is friction around the use of data, application developers are left with a difficult choice. They either have to invest time and effort in working around that friction, or compromise their plans in some way. The need to quickly bring products to market may lead to choices which are not ideal.
For example, developers may choose to build applications against Google’s mapping services. These services are easily and immediately available for anyone developer wanting to display a map or recommend a route to a user. But these platforms usually have restricted licensing that means it is usually the platform provider that reaps the most benefits. In the absence of open licences, network effects can lead to data monopolies.
So who should provide these open identifiers, and the metadata and services that support them?
This is the role of national mapping agencies. These agencies will already have identifiers for important geospatial features. The Ordnance Survey has an identifier called a TOID which is assigned to every feature in Great Britain. But there are other identifiers in use too. Some are designed to support publication of specific types of data, e.g. UPRNs.
These identifiers are national assets. They should be managed as data infrastructure and not be tied up in commercial data products.
Publishing these identifiers under an open licence, in the ways that have been outlined here, will provide a framework to support the collection and curation of geospatial data by many different organisations, across the public and private sector. That infrastructure will allow value to be created from that geospatial data in a variety of new ways.
Provision of this type of infrastructure is also in-line with what we can see happening across other parts of government. For example the work of the GDS team to develop registers of important data. Identifiers, registers and standards are important building blocks of our local, national and global data infrastructure.
If you’re interested in reading more about the benefits of open identifiers, then you might be interested in this white paper that I wrote with colleagues from the Open Data Institute and Thomson Reuters: “Creating value from identifiers in an open data world“
Posted at 20:47
Posted at 14:35
One of the biggest arguments against allowing elderly family members and senior citizens to live alone is the concern that no one would be there to help them if they needed medical attention, got lost or needed any other type of assistance. This fear led to all sorts of devices for helping the elderly get in touch with emergency services (the iconic “I’ve fallen and I can’t get up” commercials come to mind). But now, cell phones for seniors deftly fill this niche. Plus, mobile phones for the elderly have more features than the usual lifeline devices. Here are a few handy features you should help your family member or friend set up on their cell phone:
The first thing you should do when you get a cell phone for senior citizens is to program in a few ICE contacts. You can do this in the normal phonebook or in the settings of the phone. Plug in a couple different phone numbers for several individuals, including your work number, your cell number, your home number and the doctor’s office number. EMTs and other emergency assistance workers will know to check the cell phone for ICE contacts and will be able to get in touch with you if your loved one is incapacitated or hospitalized.
This feature is more of a convenience and it’s something that all of us should consider using from time to time (for instance, when you’ve had a little too much to drink). For a small fee, #TAXI connects you to a service that helps you find an affordable taxi near your location. This is the best way to get picked up quickly, without having to stand in the street hailing a cab or wait in the cold for hours.
AAA remains one of the best motor clubs available, but the roadside assistance offered by your cell phone company has its advantages. For example, Verizon’s roadside assistance can cost you as little as $3 and will bail you out if you need to jump your battery, change a tire, run out of gas (3 gallons free), unlock your car when you’re locked out, perform small mechanical fixes to get it running long enough to get to a service station, up to 10 miles free towing as well as help getting your car out of ditches, snowdrifts and mud. The number for Verizon roadside assistance is easy to remember – just dial #ROAD. Other carriers have similar numbers, such as #AUTO.
GPS is a must in any cell phone for seniors. It’ll help them get their bearings when they’re lost via GPS navigation and maps and it’ll help you (or emergency services) find them, even if they don’t answer the phone. For instance, AT&T offers the FamilyMap service, which lets you know where up to 5 family members are (whether it’s grandpa or junior) and Verizon has the similar Family Locator.
Posted at 08:31
TPAC 2017 kicked off in California, achieving its highest attendance to date, with some saying it may have been the best TPAC ever. Extensive Strategic Highlights were also published.
HTML 5.2 is now a recommendation, with HTML 5.3 coming. Work on payments made progress with some demos presented at money 20/20. There was also a nice look ahead to 2018 and semantic web trends from Dataversity.
A slight pickup in activity this quarter in the community group. With around 75 messages, almost double the previous quarter. More details below.
Aside from Fedora, there was some outreach this quarter with CERN, where it all began, with a view to possibly reuse Web Access Control.
In the CG there were calls for team members with Sebastian Samagura starting a project. An announcement of the Fedora API Spec CR and a fantastic post by Ruben entitled, “Paradigm Shifts for the Decentralized Web“.
By convention it’s been decided to try to add the ‘solid-app’ tag to new and existing apps for the solid platform, which will hopefully allow apps to become searchable. One new app, twee-fi, was written from scratch quite quickly and seems to work with all our servers. There is a general move to patch existing apps to follow this pattern so that both OIDC and TLS auth can be leveraged.
There have been updates to rdflib.js, solid-ui and solid-app-set. I also made a small console based playground, solid-libraries, that shows how these libraries fit together, and allows a few commands as examples. Additionally I have started trying to patch apps to use the new auth system starting with the pastebin tutorial. Hopefully more apps will be patched this quarter.
The OWL Time ontology is now a W3C REC. The ontology provides a vocabulary for expressing facts about topological (ordering) relations among instants and intervals, together with information about durations, and about temporal position including date-time information.
Posted at 08:15
The Web has had a huge impact on how we exchange and access information. The Web of data is growing rapidly, and interoperability depends upon the availability of open standards, whether intended for interchange within small communities, or for use on a global scale. W3C is pleased to release a W3C study on practices and tooling for Web data standardization, and gratefully acknowledges support from the Open Data Institute and Innovate UK.
A lengthy questionnaire was used to solicit input from a wide range of stakeholders. The feedback will be used as a starting point for making W3C a more effective, more welcoming and sustainable venue for communities seeking to develop Web data standards and exploit them to create value added services.
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In their excellent book “The Indisputable Existence of Santa Claus” Hannah Fry (aka @FryRsquared) and Thomas Oléron Evans (aka @Mathistopheles) talked about using Markov Chains to generate the Queen’s Christmas message. You can read a bit about that here. After reading that chapter I asked Hannah and Thomas if they had considered repeating this using recurrant neural networks. A couple of years ago Andrej Karpathy wrote a blog that he summarised as follows:
We’ll train RNNs to generate text character by character and ponder the question “how is that even possible?”
In his blog he posed the question:
It looks like we can learn to spell English words. But how about if there is more structure and style in the data?
and went on to train an rNN to write text in the style of Shakespeare. I recommend you read his blog to see the examples and get an idea of what is going on.
You might also want to watch this video from the excellent Computerphile on a similar subject.
In a previous blog I decide to have a go at using rNNs to generate lyrics for my favourite band New Model Army. Thomas was kind enough to send me the text for the Queen’s previous speeches that he and Hannah had used in their work, and I thought I’d see how good rNNs were at generating a Royal Christmas message. I didn’t do anything particular fancy here…just followed the code and examples in Karpathy’s original blog on a fairly standard home desktop machine.
Here are some of the results… (I take no responsibility for any text generated by the neural network :)).
One parameter that can be adjusted to generate the output is ‘temperature’. This takes a value between 0 and 1. Lower temperature will cause the model to make more likely, but also more boring and conservative predictions. Higher temperatures cause the model to take more chances and increase diversity of results, but at a cost of more mistakes. Running with a temperaure of 0.5 we get:
i want to send a special message of the human spirit are much to be for everyone this is a happy and part of the christmas story so in the same streed. we are all truly new zealand in an example of the commonwealth has an equal place in the lives of men and women and what they have to show that they are all life in their own peoples of the commonwealth which we have come to the sacrifice of all the fortunes of hope and there are many heart of our grandchildren the presents the prince of wales and will have a preacher group of the commonwealth. on a strong and spreading the responsibility to the commonwealth who are much on the courage of the modern world and the commonwealth games and there are many others at home and the rest of the world have been inspired by the courage and enjoyment and the present peace of a commonwealth which is how to promote the games and from all walks of life and to become a growing peace on earth which we should me to see the strength to try to do so in the world today. it was a great conflict remain inspired by the courage and prince philip and i were able to see buckingham palace which the most special year for the commonwealth is to be movement and in a different furmestand and they are all source of spirit all over the world have shared a moment in the year and the christmas message is to be consed rather a quicter and the contribution of the family of nations and i have meen and wonderful in both these ordarisasions or a common sense and encouragement. this year i am speaking to you from the same family make the world in the world. the christmas message is so many of them and i have difference to the best of ourselves. and this year there are something to look at the world they are may be a life of all the world is the commonwealth is a sense of belonging to the world i was well as they are all sort of moment the more depression
I’m not sure this makes a lot of sense, and there are a few oddities/errors in the text.
I tried lowering the temperature to 0.3:
i hope that the christmas message is to be there and it is not only a very happy christmas to you all. i am speaking to you from the commonwealth and i have been able to see that the commonwealth and i have been deeply touched this year i am speaking to you from the same family friends and communities as the future of the commonwealth and as i have always given to many of you will have heard of the more conscious of the commonwealth and around us we should be able to see that the commonwealth and i have been deeply touched the strength to try to do the same family gathering in the commonwealth and i have all been about the future as well as a great comfort to us all the problems of the commonwealth and i have seen in their own way the problems of the commonwealth and i have been deeply touched the world the progress of the commonwealth and around us we are common throughout the commonwealth who are struck by the state of the commonwealth and i have depended to see in the world today that we should remember those who have seen in their own way a celebration of the child who was born at christmas time for families and friends will never be very different problems but it is not only a time for reflection and confidence to the commonwealth and i have all been about the world that we should not be our lives and to remind us of the future. i am speaking to you from the commonwealth and i have been deeply touched the world that we can all try to make a splendid birthday and the commonwealth and i have been floods and sadness and the best of the world have been able to discuss the best of ourselves. i believe that this christmas day i want to send a special message of hope in the face of hardship is nothing new that of the commonwealth who have seen in their lives in the commonwealth and in the commonwealth and i have been able to discuss the best of ourselves. we are all live together as a great daily and its war the commonwealth
As suggested the the result here is a bit more predictable/boring.
It is also possible to prime the model with some starting text using. This starts out the RNN with some hardcoded characters to warm it up with some context before it starts generating text.
Using a temperature of 0.5 and prime text of ‘Each Christmas’ we get:
each christmas is a time for reflection and grandchildren the more depends of a dedication of the commonwealth and around us of the future of the commonwealth games in the rich and proud of life in a great religions and its members. but i am also speaking by instince in the right through the members of my family and i have been great and personal responsibility to our lives and they say to me that there are many happy or so many countries of the future with the prince of peace and happiness and self-respect for the commonwealth and is a happy and prosperous future of the world we will be achieved with the opportunity to help them are a contribution to the powerful ways of spirit and learning to see the problems of the commonwealth and i have seen in their inestivation the peoples of the commonwealth and i have been for the better but that is possible to the people and the christians it’s all those who are great practical form we have all been for them to be a chance to get the gift of a carren of different lives the service of their people throughout the world. we are all live in the rolin to our children and grandchildren the present generation to see this country and arrived the same for one another which is most popularity and the rest of the world and all the great commonwealth. pronomed news the responsibilities for the duty of events which we have all been the holidic of science. it is they all who are so there and shared heritage and sometimes in saint paul’s and much considerate and to communication the human spirit. and they can be a contralle commonwealth and a firm landmark in the course of the many servicemen and women who are broken for many that can be a precious given us to be a witness this continuing that we can all be the contribution of the commonwealth and as we all have all the features of the love of hope and goodwill. this year has constantly will be overcome. i believe that this year i am speaking to you from the hope of a determination and continues to all
Using a temperature of 0.5 and prime text of ‘This past year’ we get:
this past year has been one to see that what i have been for the commonwealth and around us we are thinking of the problems show in the face of the fact that he wanted the strongly that we should show many of them service is the birth of the commonwealth. it is a contribution of a lives of family and friends for parents and religious difficulties at the commonwealth and as we all share the future as the future of the future. it was a moment and that the christmas message of the things that have been god shown in the earliest care and for the commonwealth can give the united kingdom and across the commonwealth. it is a helping one of the march of people who are so easy to go but the rest of the world have shaped for their determination and courage of what is right the life of life is word if we can do the state of the same time last month i was welcomed as you and that the opportunity to honour the most important of the thread which have provided a strong and family. even the commonwealth is a common bond that the old games and in the courage which the generations of the commonwealth and i have those to succeed without problems which have their course all that the world has been complete strangers which could have our response. i believe that the triditings of reconciliation but there is nothing in and happy or acts of the commonwealth and around us by science the right of all the members of the world have been difficult and the benefits of dreads and happiness and service to the commonwealth of the future. i wish you all a very happy christmas to you all.
So there you have it. Not sure we’ll be replacing the Queen with an AI anytime soon. Merry Christmas!
Posted at 11:00
Dear all,
We are happy to announce SANSA 0.3 – the third release of the Scalable Semantic Analytics Stack. SANSA employs distributed computing via Apache Spark and Flink in order to allow scalable machine learning, inference and querying capabilities for large knowledge graphs.
You can find the FAQ and usage examples at http://sansa-stack.net/faq/.
The following features are currently supported by SANSA:
Deployment and getting started:
We want to thank everyone who helped to create this release, in particular the projects Big Data Europe, HOBBIT, SAKE, Big Data Ocean, SLIPO, QROWD and BETTER.
Greetings from the SANSA Development Team
Posted at 10:15
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Citation data
for articles colored by availability of a full text, as indicated in Wikidata. Mind the artifacts. Reproduce with this query and the new GraphBuilder functionality. |
Posted at 06:56
Videos of almost all of the talks from the 16th International Semantic Web Conference (ISWC) held in Vienna in 2017 are online at videolectures.net. They include 89 research presentations, two keynote talks, the one-minute madness event and the opening and closing ceremonies.
Posted at 23:15
Videos of almost all of the talks from the 16th International Semantic Web Conference (ISWC) held in Vienna in 2017 are online at videolectures.net. They include 89 research presentations, two keynote talks, the one-minute madness event and the opening and closing ceremonies.
Posted at 23:15
Posted at 10:56
Posted at 11:26
Posted at 11:14
@chickengrylls‘ #makevember manifesto / hashtag has been an excellent experience. I’ve made maybe five nice things and a lot of nonsense, and a lot of useless junk, but that’s fine – I’ve learned a lot, mostly about servos and other motors. There’s been tons of inspiration too (check out these beautiful automata, some characterful paper sculptures, Richard’s unsuitable materials, my initial inspiration’s set of themes on a tape, and loads more). A lovely aspect was all the nice people and beautiful and silly things emerging out of the swamp of Twitter.
Of my own makes, my favourites were this walking creature, with feet made of crocodile clips (I was amazed it worked); a saw-toothed vertical traveller, such a simple little thing; this fast robot (I was delighted when it actually worked); some silly stilts; and (from October) this blimp / submarine pair.
I did lots of fails too – e.g. a stencil, a raspberry blower. Also lots of partial fails that got scaled back – AutoBez 1, 2, and 3; Earth-moon; a poor-quality under-water camera. And some days I just ran out of inspiration and made something crap.
Why’s it so fun? Well there’s the part about being more observant, looking at materials around you constantly to think about what to make, though that’s faded a little. As I’ve got better I’ve had more successes and when you actually make something that works, that’s amazing. I’ve loved seeing what everyone else is making, however good or less-good, whether they spent ages or five minutes on it. It feels very purposeful too, having something you have to do every day.
Downsides: I’ve spent far too long on some of these. I was very pleased with both Croc Nest, and Morse, but both of them took ages. The house is covered in bits of electronics and things I “might need” despite spending some effort tidying, but clearly not enough (and I need to have things to hand and to eye for inspiration). Oh, and I’m addicted to Twitter again. That’s it really. Small price to pay.
Posted at 16:38
With increasing regulation of Big Data, it is becoming essential for organizations to ensure compliance with various data protection standards. The Federal Acquisition Regulations System (FARS) within the Code of Federal Regulations (CFR) includes facts and rules for individuals and organizations seeking to do business with the US Federal government. Parsing and gathering knowledge from such lengthy regulation documents is currently done manually and is time and human intensive.Hence, developing a cognitive assistant for automated analysis of such legal documents has become a necessity. We have developed semantically rich approach to automate the analysis of legal documents and have implemented a system to capture various facts and rules contributing towards building an ef?cient legal knowledge base that contains details of the relationships between various legal elements, semantically similar terminologies, deontic expressions and cross-referenced legal facts and rules. In this paper, we describe our framework along with the results of automating knowledge extraction from the FARS document (Title48, CFR). Our approach can be used by Big Data Users to automate knowledge extraction from Large Legal documents.
Posted at 01:56
With increasing regulation of Big Data, it is becoming essential for organizations to ensure compliance with various data protection standards. The Federal Acquisition Regulations System (FARS) within the Code of Federal Regulations (CFR) includes facts and rules for individuals and organizations seeking to do business with the US Federal government. Parsing and gathering knowledge from such lengthy regulation documents is currently done manually and is time and human intensive.Hence, developing a cognitive assistant for automated analysis of such legal documents has become a necessity. We have developed semantically rich approach to automate the analysis of legal documents and have implemented a system to capture various facts and rules contributing towards building an ef?cient legal knowledge base that contains details of the relationships between various legal elements, semantically similar terminologies, deontic expressions and cross-referenced legal facts and rules. In this paper, we describe our framework along with the results of automating knowledge extraction from the FARS document (Title48, CFR). Our approach can be used by Big Data Users to automate knowledge extraction from Large Legal documents.
Posted at 01:56
A lot of the work that we’ve done at the ODI over the last few years has involved helping organisations to recognise their data assets.
Many organisations will have their IT equipment and maybe even their desks and chairs asset tagged. They know who is using them, where they are, and have some kind of plan to make sure that they only invest in maintaining the assets they really need. But few will be treating data in the same way.
That’s a change that is only just beginning. Part of the shift is in understanding how those assets can be used to solve problems. Or help them, their partners and customers to make more informed decisions.
Often that means sharing or opening that data so that others can use it. Making sure that data is at the right point of the data spectrum helps to unlock its value.
A sticking point for many organisations is that they begin to question why they should share or open those data assets, and whether others should contribute to their maintenance. There are many commons questions around the value of sharing, respecting privacy, logistics, etc.
I think a useful framing for this type of discussion might be to distinguish between data assets and data products.
A data asset is what an organisation is managing internally. It may be shared with a limited audience.
A data product is what you share with or open to a wider audience. Its created from one or more data assets. A data product may not contain all of the same data as the data assets it’s based on. Personal data might need to be removed or anonymised for example. This means a data product might sit at a different point in the data spectrum. It can be more open. I’m using data product here to refer to specific types of datasets, not “applications that have been made using data”
An asset is something you manage and invest in. A product is intended to address some specific needs. It may need some support or documentation to make sure it’s useful. It may also need to evolve based on changing needs.
In some cases a data asset could also be a data product. The complete dataset might be published in its entirety. In my experience this is often rarely the case though. There’s usually additional information, e.g governance and version history, that might not be useful to reusers.
In others cases data assets are collaboratively maintained, often in the open. Wikidata and OpenStreetMap are global data assets that are maintained in this way. There are many organisations that are using those assets to create more tailored data products that help to meet specific needs. Over time I expect more data assets will be managed in collaborative ways.
Obviously not every open data release needs to be a fully supported “product”. To meet transparency goals we often just need to get data published as soon as possible, with a minimum of friction for both publishers and users.
But when we are using data as tool to create other types of impact, more work is sometimes needed. There are often a number of social, legal and technical issues to consider in making data accessible in a sustainable way.
By injecting some product thinking into how we share and open data it might be helpful in addressing the types of problems that can contribute to data releases not having the desired impact: Why are we opening this data? Who will use it? How can we help them be more effective? Does releasing the data provide ways in which the data asset might be more collaboratively maintained?
When governments are publishing data that should be part of a national data infrastructure, more value will be unlocked if more of the underlying data assets are available for anyone to access, use and share. Releasing a “data product” that is too closely targeted might limit its utility. So I also think this “data asset” vs “data product” distinction can help us to challenge the types data that are being released. Are we getting access to the most valuable data assets or useful subsets of them. Or are we just being given a data product that has much more limited applications, regardless of how well it is being published?
Posted at 11:56
On Wednesday, as part of the Autumn Budget, the Chancellor announced that the government will be creating a Geospatial Commission “to establish how to open up freely the OS MasterMap data to UK-based small businesses”. It will be supported by new funding of £80 million over two years. The Commission will be looking at a range of things including:
That’s a big pot of money to get something done and a remit that ticks all of the right boxes. As the ODI blog post notes, it creates “the opportunity for national mapping agencies to adapt to a future where they become stewards for national mapping data infrastructure, making sure that data is available to meet the needs of everyone in the country”.
So, I’m really surprised that the many of the reactions from the open data community have been fairly negative. I understand the concerns that the end result might not be a completely open Mastermap. There are many, many ways in which this could end up with little or no change to the status quo. That’s certainly true if we ignore the opportunity to embed some change.
From my perspective, this is the biggest step towards a more open future for UK geospatial data since the first OS Open Data release in 2010. (I remember excitedly hitting the publish button to make their first Linked Data release publicly accessible)
Anyone who has been involved with open data in the UK will have encountered the Ordnance Survey licensing issues that are massively inhibiting both the release and use of open data in the UK. It’s a frustration of mine that these issues aren’t manifest in the various open data indexes.
In my opinion, anything that moves us forward from the current licensing position is to be welcomed. Yes, we all want a completely open MasterMap. That’s our shared goal. But how do we get there?
We’ve just seen the government task and resource itself to do something that can help us achieve that goal. It’s taken concerted effort by a number of people to get to this point. We should be focusing on what we all can do, right now, to help this process stay on track. Dismissing it as an already failed attempt isn’t helpful.
I think there’s a great deal that the community could do to engage with and support this process.
Here’s a few ideas of things of ways that we could inject some useful thinking into the process:
Personally, I’m choosing to be optimistic. Let’s get to work to create the result we want to see.
Posted at 20:39