Archive for Data science for social good

Nature tidbits

Posted in Books, Kids, Statistics, Travel, University life with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , on June 10, 2024 by xi'an

I was quite glad to have taken this 28 March issue of Nature for the train ride to Marseille earlier this month, as it proved full of great entries. Starting with a tribune from a PhD candidate from Ghana unable to speak at a tropical ecology conference in Lisbon for being denied a Schengen visa by the Dutch embassy in Accra, despite providing a serious amount of supporting material. This is a general issue related to international conferences that I plan to include in my presentation in a round table about the future of conference at the ISBA 2024 conference next month. Researchers and students from low-income countries are regularly victims of arbitrary rejections by consular and embassy officers, with little leeway from inviting universities and academic societies for counteracting such arbitrariness. An example came last year when, as part of our Data Science for Social Good program at Warwick, one computer student from Pakistan got denied a visa, while another one with an almost identical profile did receive her visa.

In News in focus, the development of a revolutionary (CAR-T) cancer therapy by  a Munbai company at 1/10 the cost of similar products in the US, with several impressive innovations (and a clinical trial over 33 people). The coverage of Michel Talagrand’s 2024 Abel prize, the deteriorating state of scientific research in Russia, a review on how the Big Bang got its name (hint: it was on BBC 3), and remembering India’s Chipko tree-hugging women of Western Himalayas of 50 years ago. The development of signs for scientific terms to add to the Indian and American sign languages.

There is also an almost sleuthing story on the debates in the ecology community about the theory of “Mother Tree”, introduced by Suzanne Simard, about trees communicating among themselves by underground fungal networks, and thus creating a “wood wide web“.  With mature trees favouring their own kin, a theory that critics in the field deem incompatible with evolutionary theory and more crucially missing supporting evidence. (Arguments from Simard that “the European male society hates the mother tree” concept do not help towards a rational denate. The Guardian now has a podcast about this debate.)

And another story on the (racial and gender) bias of AI image generators. With the conclusion that removing such biases goes through open sourcing. And regulation like the EU’s AI Act. that requires technical documentation on the training datasets. Plus a retrospective on the theory of bird-flight origins, with John Ostrom proposing in 1974 that the evolution to flight was ground-up rather than tree-down.

A cover-paper on IBM error correcting code for quantum computing that only requires each qubit to connect with six others (just like birds in murmuration only keep track of seven neighbours) for an error threshold less than 1%. (With the property that 12 logical qubits can be preserved for 10⁶ cyclces using 288 qubits in total.)

a day for social good in London

Posted in pictures, Travel, University life with tags , , , , , , , , , , , , on September 16, 2023 by xi'an


On Thursday, I went (from Paris) to London for the final day of Warwick DSSGx UK 2023 (Data Science for Social Good), which took place in The Shard, the tallest building in London (and certainly not the prettiest!), where the Warwick Business School has offices, and on the way, stopped by the nearby Tate Modern museum

where I spotted a few interesting pieces of art (but not that many!)

before heading to the 17th floor of the Shard building
And celebrating the great work done by the 16 Fellows (with the support of their fantastic technical mentors and project managers). Unfortunately, two of them were denied student visas and had to work remotely.The four projects were about predicting deforestation (in the Brazilian Amazon), failure to join a sixth form college (in the UK), risk of turning NEET (in the UK), and greenwashing (from social media).

We are now starting planning the next cohort, hence looking for candidates, projects, and financial support. Contact dssg@wbs.ac.uk for expressions of interest.

partial rankings and aggregate ranks

Posted in Books, Kids, R, Statistics, Travel, University life with tags , , , , , , , , , on March 22, 2023 by xi'an

When interviewing impressive applicants from a stunning variety of places and background for fellows in our Data Science for Social Good program (in Warwick and Kaiserslautern) this summer, we came through the common conundrum of comparing ranks while each of us only meeting a subset of the candidates. Over a free morning, I briefly thought of the problem (while swimming) and then wrote a short R code to infer about an aggregate ranking, ρ, based on a simple model, namely a Poisson distribution on the distance between an individual’s ranking and the aggregate

d(r_i,\rho)\sim\mathcal P(\lambda)

a uniform distribution on the missing ranks as well as on the aggregate, and a non-informative prior on λ. Leading to a three step Gibbs sampler for the completion and the simulation of ρ and λ.

I am aware that the problem has been tackled in many different ways, including Bayesian ones (as in Deng et al., 2014) and local ones, but this was a fun exercise. Albeit we did not use any model in the end!

Data science for social good fellowships [DSSGx UK 2023]

Posted in Kids, Statistics, Travel, University life with tags , , , , , , , , , , , , , on November 9, 2022 by xi'an

Warwick is (again) running a 12-week summer programme bringing together some of the top student talents from data science, machine learning and artificial intelligence, all over the World, to work on real-world data science challenges and deliver positive social impact. Applications for DSSG 2023 are now OPEN! Click here for the application form (please read the information carefully) and click here for the FAQs for 2023. (The application also works for a similar programme in Kaiserslauten, Germany.

DSSG helps not-for-profit organisations and government bodies to achieve more with their data by enhancing their services, interventions and outreach, helping fulfil their mission of improving the world and people’s lives.

The programme gives not-for-profit organisations and government bodies unprecedented access to inspiring, top-tier data science talent. This helps build their capacity to use cutting-edge quantitative methods to address societal challenges in areas such as education, health, energy, public safety, transportation and economic development.

At the same time, it provides intensive case-based and supported training to students to create industry-standard data science products in collaboration with government agencies and NGOs, to deliver positive social impact. And it builds a world-wide community of data scientists who care about the social good.

In 2019, the University of Warwick together with the Alan Turing Institute brought DSSG to the UK. The University of Warwick has run it each year since and now preparation is well underway for DSSGx UK 2023, which will be held at the University of Warwick, UK, from 5 June to 25 August.