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Ben Snaith

Did city centres get a 'Super Saturday' bounce? | Centre for Cities - 1 views

  • There are three key things to note in this: Looking between late-February and mid-March, we see that the drop-off in footfall happened earlier and was much sharper in London than the other cities. Looking between early-April and mid-June, we see that the small and the medium-sized cities experienced less of a decline than London and the other large cities, and they also started to recover from this earlier. Looking between mid-June (when non-essential retail reopened) and Saturday 4 July, we see that while the trajectory is upwards everywhere, the small and the medium-sized cities have seen a much sharper climb back up towards normal.
  • There are three things potentially playing into this: City centres of large cities tend to have less residential and industrial space and are often concentrations of office jobs, which have been and still are being done from home. This limits how many workers are in the city centre compared to before.  Larger cities, especially London are more reliant on public transport than their smaller counterparts. With public transport still limited in both capacity and use for public health reasons, it is now harder for people to travel into the centres of these cities. Due to their size, larger cities have more options for going to the pub or shopping beyond the centre and it may be that this has further reduced footfall in the city centre.
  • This and our other analysis on the topic suggests that we are unlikely to see large-scale changes in footfall and a ‘return to the normal’ in the city centres of the largest cities until office workers are welcome to and do return. 
Ben Snaith

Using Location Data to Tackle Covid-19: A Primer | Institute for Global Change - 0 views

  • Aggregated Location Data Analysis of aggregated location data can be used to identify hotspots of transmission and forecast future trends on transmission. This can help governments measure the efficacy of existing measures as well as guide government decision-making going forward, on subjects such as public-health interventions and where to allocate testing and medical resources. This kind of data will be particularly significant for governments as lockdowns are eased; it is essential that governments are able to gather real-time insights on the effectiveness of their interventions.
  • Medical experts currently believe that the virus is transmissible within 2 metres – meaning a person must come in contact within 2 metres of an infected person to have a chance of contracting it from social interactions. Therefore, effective digital contract tracing requires highly precise data. However, most extant technology was not designed to rapidly geolocate devices at that level of precision, meaning most location data is less precise than 2 metres. The ongoing challenge for technologists is to either adapt extant technology for a purpose for which it was not designed or build new solutions that can deliver the required level of precision.
  • ost notably, if the data used for generating location and mobility insights is weak (low precision and low accuracy), then the privacy implications may be less stark – but the value of the exercise also decreases. Both individual tracking and generating aggregated mobility insights based on weak location data can result in flawed insights. This can have a range of undesirable costs for both individuals and governments.
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  • Policymakers must be clear about the level of analysis they are seeking, and realistic about the capabilities of technology to achieve this. It is a challenge going from achieving high level location insights on a community level such as a building, neighbourhood or street to an individual level, and governments should be prepared to be told that current data infrastructure doesn’t support exactly what they are asking for. Focusing on community data is currently much easier than focusing on individual data. Issues around precision can be solved by 5G, but we don’t currently have that capability.
  • Governments must evaluate whether the trade-off they are asking citizens to make is commensurate with the value created. For example, if you are building individual contact tracing and the data is accurate within 1 kilometre, the value of the data is low, and the trade-off may not be worth it. They must also be straightforward with the public about the expected benefits and limitations of the technologies they are pursuing, and the trade-offs with other concerns in relation to privacy and data security.
  • Governments should work with partners, but they should do so by putting out clear calls for assistance to engage with the right level and type of expertise. So far, the engagement from many governments has happened on an ad-hoc basis, and partnerships between government and companies or researchers has happened as a result of partners approaching government first. Instead, governments must be clear about their objectives from the outset and put out a call for support from technical experts. Mobile operators can help governments analyse data on a community level; working with data can give some false conclusions, which mobile operators can help to address.
Ben Snaith

Data reveals coronavirus hotspots in Bradford, Barnsley and Rochdale | World news | The... - 0 views

  • Local public health officials and medics have complained that the government has not supplied sufficiently detailed information on local infections, the lack of which they say hampers attempts to quash new outbreaks.
  • Councils have been promised postcode-level data for weeks from Public Health England and the newly created Joint Biosecurity Centre. But some public health directors are concerned the centre has not been sharing data about potential clusters of infections with councils, which could enforce school or workplace closures that could suppress an outbreak at an early stage.
  • “If the only data you’re getting is ‘in this population of 90,000 people there are 40 positives’ it’s like looking for a needle in a haystack. If Leicester had got the data sooner they could have had a fighting chance of managing it,” said one public health director, who asked not to be named.
Ben Snaith

Aggregated mobility data could help fight COVID-19 | Science - 0 views

  • The estimates of aggregate flows of people are incredibly valuable. A map that examines the impact of social distancing messaging or policies on population mobility patterns, for example, will help county officials understand what kinds of messaging or policies are most effective. Comparing the public response to interventions, in terms of the rate of movement over an entire county from one day to the next, measured against a baseline from normal times, can provide insight into the degree to which recommendations on social distancing are being followed.
  • The research and public health response communities can and should use population mobility data collected by private companies, with appropriate legal, organizational, and computational safeguards in place.
olivierthereaux

Coronavirus (COVID-19) harmonisation guidance - 0 views

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    Harmonised principles set out how to collect and report statistics to ensure comparability across different data collections in the Government Statistical Service (GSS). Harmonisation produces more useful statistics that give users a greater level of understanding. When it comes to collecting data about the impact of the coronavirus (COVID-19) pandemic we are proposing a harmonised set of questions. Given the lack of testing these are to be considered experimental and not a full harmonised principle.
Ben Snaith

City-wide data in London: pandemic response & recovery (Part 1) - 0 views

  • The crisis more than ever demonstrated there is a very clear need for data in real time (or as near to real time) as possible to help inform decisions. It showed that problems-to-be-solved can’t be solved by the data one organisation holds alone: inevitably joining-up data from other sources is required. It also told us that without greater data collaboration our routes to creative, scalable solutions will remain limited.
  • The UK’s unusually fragmented approach to public sector data means often we talk more about how data is not shared or is not available than how it is more seamlessly used to understand common needs or meet shared objectives.
  • For example, City Hall is using aggregated data from Vodafone, O2 and Mastercard payments to add to our view of the observance of lockdown restrictions and add our understanding of the health of local economies.
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  • Work (known as ‘Project Odysseus’) with the Turing Institute, London First and Microsoft UK repurposes our ongoing work on air quality forecasting to assess the ‘busy-ness’ of areas of the city, also allowing insight into restrictions and economic recovery.
Ben Snaith

Mobile phone data for informing public health actions across the COVID-19 pandemic life... - 0 views

  • Decision-making and evaluation or such interventions during all stages of the pandemic life cycle require specific, reliable, and timely data not only about infections but also about human behavior, especially mobility and physical copresence. We argue that mobile phone data, when used properly and carefully, represents a critical arsenal of tools for supporting public health actions across early-, middle-, and late-stage phases of the COVID-19 pandemic.
  • Seminal work on human mobility has shown that aggregate and (pseudo-)anonymized mobile phone data can assist the modeling of the geographical spread of epidemics (7–11).
  • Although ad hoc mechanisms leveraging mobile phone data can be effectively (but not easily) developed at the local or national level, regional or even global collaborations seem to be much more difficult given the number of actors, the range of interests and priorities, the variety of legislations concerned, and the need to protect civil liberties. The global scale and spread of the COVID-19 pandemic highlight the need for a more harmonized or coordinated approach.
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  • Government and public health authorities broadly raise questions in at least four critical areas of inquiries for which the use of mobile phone data is relevant. First, situational awareness questions seek to develop an understanding of the dynamic environment of the pandemic. Mobile phone data can provide access to previously unavailable population estimates and mobility information to enable stakeholders across sectors better understand COVID-19 trends and geographic distribution. Second, cause-and-effect questions seek to help identify the key mechanisms and consequences of implementing different measures to contain the spread of COVID-19. They aim to establish which variables make a difference for a problem and whether further issues might be caused. Third, predictive analysis seeks to identify the likelihood of future outcomes and could, for example, leverage real-time population counts and mobility data to enable predictive capabilities and allow stakeholders to assess future risks, needs, and opportunities. Finally, impact assessments aim to determine which, whether, and how various interventions affect the spread of COVID-19 and require data to identify the obstacles hampering the achievement of certain objectives or the success of particular interventions.
  • During the acceleration phase, when community transmission reaches exponential levels, the focus is on interventions for containment, which typically involve social contact and mobility restrictions. At this stage, aggregated mobile phone data are valuable to assess the efficacy of implemented policies through the monitoring of mobility between and within affected municipalities. Mobility information also contributes to the building of more accurate epidemiological models that can explain and anticipate the spread of the disease, as shown for H1N1 flu outbreaks (29). These models, in turn, can inform the mobilization of resources (e.g., respirators and intensive care units).
  • Continued situational monitoring will be important as the COVID-19 pandemic is expected to come in waves (4, 31). Near real-time data on mobility and hotspots will be important to understand how lifting and reestablishing various measures translate into behavior, especially to find the optimal combination of measures at the right time (e.g., general mobility restrictions, school closures, and banning of large gatherings), and to balance these restrictions with aspects of economic vitality.
  • After the pandemic has subsided, mobile data will be helpful for post hoc analysis of the impact of different interventions on the progression of the disease and cost-benefit analysis of mobility restrictions. During this phase, digital contact-tracing technologies might be deployed, such as the Korean smartphone app Corona 100m (32) and the Singaporean smartphone app TraceTogether (33), that aim at minimizing the spread of a disease as mobility restrictions are lifted.
  • Origin-destination (OD) matrices are especially useful in the first epidemiological phases, where the focus is to assess the mobility of the population. The number of people moving between two different areas daily can be computed from the mobile network data, and it can be considered a proxy of human mobility.
  • Amount of time spent at home, at work, or other locations are estimates of the individual percentage of time spent at home/work/other locations (e.g., public parks, malls, and shops), which can be useful to assess the local compliance with countermeasures adopted by governments. The home and work locations need to be computed in a period of time before the deployment of mobility restrictions measures.
  • The use of mobile phone data for tackling the COVID-19 pandemic has gained attention but remains relatively scarce.
  • First, governments and public authorities frequently are unaware and/or lack a “digital mindset” and capacity needed for both for processing information that often is complex and requires multidisciplinary expertise (e.g., mixing location and health data and specialized modeling) and for establishing the necessary interdisciplinary teams and collaborations. Many government units are understaffed and sometimes also lack technological equipment.
  • Second, despite substantial efforts, access to data remains a challenge. Most companies, including mobile network operators, tend to be very reluctant to make data available—even aggregated and anonymized—to researchers and/or governments. Apart from data protection issues, such data are also seen and used as commercial assets, thus limiting the potential use for humanitarian goals if there are no sustainable models to support operational systems. One should also be aware that not all mobile network operators in the world are equal in terms of data maturity. Some are actively sharing data as a business, while others have hardly started to collect and use data.
  • Third, the use of mobile phone data raises legitimate public concerns about privacy, data protection, and civil liberties.
  • Control of the pandemic requires control of people—including their mobility and other behaviors. A key concern is that the pandemic is used to create and legitimize surveillance tools used by government and technology companies that are likely to persist beyond the emergency. Such tools and enhanced access to data may be used for purposes such as law enforcement by the government or hypertargeting by the private sector. Such an increase in government and industry power and the absence of checks and balance is harmful in any democratic state. The consequences may be even more devastating in less democratic states that routinely target and oppress minorities, vulnerable groups, and other populations of concern.
  • Fourth, researchers and technologists frequently fail to articulate their findings in clear, actionable terms that respond to practical political and technical questions. Researchers and domain experts tend to define the scope and direction of analytical problems from their perspective and not necessarily from the perspective of governments’ needs. Critical decisions have to be taken, while key results are often published in scientific journals and in jargon that are not easily accessible to outsiders, including government workers and policy makers.
  • Last, there is little political will and resources invested to support preparedness for immediate and rapid action. On country levels, there are too few latent and standing mixed teams, composed of (i) representatives of governments and public authorities, (ii) mobile network operators and technology companies, and (iii) different topic experts (virologists, epidemiologists, and data analysts); and there are no procedures and protocols predefined. None of these challenges are insurmountable, but they require a clear call for action.
  • To effectively build the best, most up-to-date, relevant, and actionable knowledge, we call on governments, mobile network operators, and technology companies (e.g. Google, Facebook, and Apple), and researchers to form mixed teams.
  • For later stages of the pandemic, and for the future, stakeholders should aim for a minimum level of “preparedness” for immediate and rapid action.
Ben Snaith

On the road again? Monitoring traffic following the easing of lockdown restrictions | U... - 0 views

  • Looking at the news across the UK, there are indications that the easing of lockdown restrictions has led to serious traffic problems. For instance, police were forced to close Falkirk Council’s Roughmute recycling centre two hours after opening it due to traffic building up on roads approaching the site. In Milton Keynes, IKEA was forced to close its car park just two hours after opening due to traffic volumes. Transport Scotland indicated a 60% increase in traffic on Saturday 30th May, compared to the previous Saturday, with traffic at the tourist and leisure hotspot of Loch Lomond up by 200%.
  • There are various ways to measure traffic volumes. Here, we look at Split Cycle Offset Optimisation Technique (SCOOT) data. The data is gathered from detectors installed at traffic lights. The purpose of the system is to coordinate traffic lights to improve the flow of vehicles. We accessed data on Glasgow’s traffic through an API provided by Glasgow City Council.
  • The aggregate pattern hides substantial variation at the different locations where the measurements are taken, which could explain why people may have seen large increases in traffic in their local area.
fionntan

The Systems Thinker - Introduction to Systems Thinking - The Systems Thinker - 0 views

  • This volume explores these questions and introduces the principles and practice of a quietly growing field: systems thinking. With roots in disciplines as varied as biology, cybernetics, and ecology, systems thinking provides a way of looking at how the world works that differs markedly from the traditional reductionistic, analytic view. Why is a systemic perspective an important complement to analytic thinking? One reason is that understanding how systems work – and how we play a role in them – lets us function more effectively and proactively within them. The more we understand systemic behavior, the more we can anticipate that behavior and work with systems (rather than being controlled by them) to shape the quality of our lives.
fionntan

Publishing with purpose? Reflections on designing with standards and locating user enga... - 0 views

  • Purpose should govern the choice of dataset to focus on Standards should be the primary guide to the design of the datasets User engagement should influence engagement activities ‘on top of’ published data to secure prioritised outcomes New user needs should feed into standard extension and development User engagement should shape the initiatives built on top of data
  • The call for ‘raw data now‘ was not without purpose: but it was about the purpose of particular groups of actors: not least semantic web reseachers looking for a large corpus of data to test their methods on. This call configured open data towards the needs and preferences of a particular set of (technical) actors, based on the theory that they would then act as intermediaries, creating a range of products and platforms that would serve the purpose of other groups. That theory hasn’t delivered in practice
  • They describe a process that started with a purpose (“get better bids on contract opportunities”), and then engaged with vendors to discuss and test out datasets that were useful to them.
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  • But in seeking to be generally usable, standard are generally not tailored to particular combinations of local capacity and need. (This pairing is important: if resource and capacity were no object, and each of the requirements of a standard were relevant to at least one user need, then there would be a case to just implement the complete standard. This resource unconstrained world is not one we often find ourselves in.)
  • The Open Contracting Partnership, which has encouraged governments to purposely prioritise publication of procurement data for a number of years now,
    • fionntan
       
      how does the open contracting partnership relate to models?
  • The Open Contracting Partnership, which has encouraged governments to purposely prioritise publication of procurement data for a number of years now,
Ben Snaith

Wall Street Mines Apple and Google Mobility Data to Spot Revival - 0 views

  • LGIM’s asset allocation team takes Apple users’ requests for travel directions and adjusts them for weekly seasonality before projecting the data onto estimates for gross domestic product. So far, their analysis shows that the U.S. economy is holding up better than other regions and is gradually reopening, while there are signs of improvement in southern Europe as countries like Italy relax their movement restrictions.
  • In addition to LGIM, Societe Generale SA and Deutsche Bank AG are among those tracking mobility data. SocGen quant strategists led by Andrew Lapthorne said in a note on Monday that the data has helped them see that despite the easing of lockdowns in major economies, activity continues to be weak.
  • Over at Deutsche Bank, strategists are using Google data to monitor any pick-up in activity in various New York communities.
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  • Torsten Slok, chief economist at Deutsche Bank Securities, said the analysts are beginning to see early signs of a turnaround in daily and weekly indicators of New York City subway usage, but those improvements are more modest than the pick-up in activity at parks, grocery stores and pharmacies.
Ben Snaith

Boris Bikes are booming | FT Alphaville - 0 views

  • Last Sunday, April 19, with the capital’s roads bereft of traffic and the sun high in the sky, 39,889 trips were taken on London-based Santander Cycles — or, as most of us still tend to call them, 'Boris Bikes’. That was the busiest day of the year for bike rentals so far, according to Transport for London. And this past weekend was almost as busy: 37,995 on Saturday 25th, and 38,756 on Sunday.
  • While tube usage is down 93 per cent and bus usage is down 74 per cent, Boris biking (which requires more manual contact than either of those transport methods) appears to be soaring. Our anecdotal evidence (at least) suggests that insufficient knowledge about how the disease can spread across surfaces could be an important driver of the higher leisure usage we are seeing.
  • In New York, demand for the city's bike-share programme in the last week of March was down by 71 per cent compared with the same week the year before, according to a group of software developers and data explorers working with data feeds from NYC's Bike Share system. In Paris, where there are strict rules on when and where you can exercise, usage of public Velib bikes has fallen by 75 per cent year on year. 
Ben Snaith

Data firms pitch profiling tools at UK councils | Financial Times - 0 views

  • Data companies are offering to mine troves of personal and public information to help local officials in the UK identify people who are struggling in the aftermath of the coronavirus crisis.
  • The aim is to move beyond assigning risk just based on an individual’s health and also include those who might be at greater risk of domestic violence, marital breakdown and financial difficulties, said Xantura’s chief executive Wajid Shafiq.
  • Xantura’s software runs the data against a set of risk factors and demographic data, as well as the NHS’s “shielded list” of individuals believed to be most at risk from Covid-19 complications, scoring households according to their risk profile.
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  • Coronavirus has been a “significant accelerant” to linking data sets in order to overcome silos, he added.
  • Experian, meanwhile, has rolled out a demographic segmentation tool, dubbed “Experian Safeguard”, which it has offered for free to local councils, NHS trusts, fire and police services as well as charities. Such tools are primarily used by private companies to target consumers to market products.
  • Experian’s flagship Mosaic postcode demographics tool — which arranges the UK population into groups according to factors such as lifestyle and debt levels — has been deployed at a number of local authorities, including Leeds city and Stockton-on-Tees borough councils, according to data gathered by Tussell, a data provider which tracks UK government contracts and expenditure.
Ben Snaith

The problem of modelling: Public policy and the coronavirus - 0 views

  • The current epidemic is a classic application of what economists call “radical uncertainty” (most recently explored by John Kay and Mervyn King in their brilliant book of that title, which came out last month): in a world that has inevitably become too complex to be adequately captured in models, a world of both “known unknowns” and “unknown unknowns”, the most sensible response to the question “what should we do?” is “I don’t know”. At the onset of this crisis, we could not put probabilities on which forms of social distancing would best limit its spread because we’d never done it before. We didn’t know how people would alter their behaviour in response to the appeal to “save the NHS”. We didn’t even know whether reducing the spread was desirable: perhaps fewer deaths now would come at the cost of more next winter. And these were just the known unknowns. With a disruption as big as this, unknown unknowns are also lurking. We have no experience of the material and economic repercussions from shutdowns of this nature and their aftermath in a modern economy, and no meaningful way of assigning probabilities; nor of how people’s behaviour will evolve.
  • What the modellers should have said, right from the beginning, was that it was vital to establish two fundamental parameters: the incidence and the rate of contagion, both of which require mass testing, and without which mortality rates are impossible to decipher and hence sensible policy impossible to implement. It is frankly astounding that four months into this new virus such tests are only now being instigated.
  • . Shifting responsibilities down the system not only enables rapid scale-up, it has a further huge advantage: the power of decision is closer to the coalface of practitioner experience. We learn not just from accumulating and analysing codifiable knowledge – the domain of the expert. We learn by doing, or by trying to do things that we can’t do and that force us to experiment. A decentralized system learns from a litany of failed experiments running in parallel, and so it learns fast: teams copy other teams that have hit on something that works well enough to get the job done.
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  • The political herd immunity to which governments are prone is that it is much safer to fail with a policy that others are following than to fail with a distinctive policy, even if, ex ante, the chances of failure are higher with the former.
Ben Snaith

European mobile operators share data for coronavirus fight - Reuters - 0 views

  • In Germany, where schools and restaurants are closing and people have been told to work at home if they can, the data donated by Deutsche Telekom offer insights into whether people are complying, health czar Lothar Wieler said.
  • In Italy, mobile carriers Telecom Italia, Vodafone and WindTre have offered authorities aggregated data to monitor people’s movements.
  • Movements exceeding 300-500 meters (yards) are down by around 60% since Feb. 21, when the first case was discovered in the Codogno area, the data show.
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  • A1 Telekom Austria Group, the country’s largest mobile phone company, is sharing results from a motion analysis application developed by Invenium, a spin-off from the Graz University of Technology that it has backed.
  • Invenium analyses how flows of people affect traffic congestion or how busy a tourist site will get, said co-founder Michael Cik, but its technology is equally applicable to assessing the effectiveness of measures to reduce social contact or movement that seek to contain an epidemic.
Ben Snaith

Digital alerts to warn UK rail passengers of busy trains and stations | UK news | The G... - 0 views

  • The technology will combine data on journey trends and live updates from station staff, to both inform passengers searching for journeys on the National Rail website and app, and alert those who opt in for updates on specific journeys, using their anonymised data to help predict how busy each train will be.
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