## postdoc on COVID-19 modelling in Lugano

Posted in pictures, Statistics, Travel, University life with tags , , , , , , on July 24, 2021 by xi'an

A new call for postdoctoral applications from my friend Anto: a postdoctoral position is opening this Fall at the Università della Svizzera italiana (USI) in Lugano, Switzerland, under her direction, for conducting interdisciplinary approach to modelling the consequences of the COVID-19 pandemic and responses to it on other outcomes, such as mortality.

## Medellin

Posted in Kids, pictures, Travel with tags , , , , , , , on June 15, 2021 by xi'an

My nephew Paul and a fellow student made this nice mute video as a final project of his cinema degree in Rennes:

## COVID-19, the musical

Posted in Kids, Statistics, University life with tags , , , , , , , on May 16, 2021 by xi'an

## hands-on probability 101

Posted in Books, Kids, pictures, Statistics, University life with tags , , , , , , , , , on April 3, 2021 by xi'an

When solving a rather simple probability question on X validated, namely the joint uniformity of the pair

$(X,Y)=(A-B+\mathbb I_{A

when A,B,C are iid U(0,1), I chose a rather pedestrian way and derived the joint distribution of (A-B,C-B), which turns to be made of 8 components over the (-1,1)² domain. And to conclude at the uniformity of the above, I added a hand-made picture to explain why the coverage by (X,Y) of any (red) square within (0,1)² was uniform by virtue of the symmetry between the coverage by (A-B,C-B) of four copies of the (red) square, using color tabs that were sitting on my desk..! It did not seem to convince the originator of the question, who kept answering with more questions—or worse an ever-changing question, reproduced in real time on math.stackexchange!, revealing there that said originator was tutoring an undergrad student!—but this was a light moment in a dreary final day before a new lockdown.

## ten recommendations from the RSS

Posted in Statistics, University life with tags , , , , , , , , , , , on March 21, 2021 by xi'an

‘Statistics have been crucial both to our understanding of the pandemic and to our efforts to fight it. While we hope we won’t see another pandemic on this scale, we need to see a culture change now – with more transparency around data and evidence, stronger mechanisms to challenge the misuse of statistics, and leaders with statistical skills.’

• Invest in public health data – which should be regarded as critical national infrastructure and a full review of health data should be conducted
• Publish evidence – all evidence considered by governments and their advisers must be published in a timely and accessible manner
• Be clear and open about data – government should invest in a central portal, from which the different sources of official data, analysis protocols and up-to-date results can be found
• Challenge the misuse of statistics – the Office for Statistics Regulation should have its funding augmented so it can better hold the government to account
• The media needs to step up its responsibilities – government should support media institutions that invest in specialist scientific and medical reporting
• Build decision makers’ statistical skills – politicians and senior officials should seek out statistical training
• Build an effective infectious disease surveillance system to monitor the spread of disease – the government should ensure that a real-time surveillance system is ready for future pandemics
• Increase scrutiny and openness for new diagnostic tests – similar steps to those adopted for vaccine and pharmaceutical evaluation should be followed for diagnostic tests
• Health data is incomplete without social care data – improving social care data should be a central part of any review of UK health data
• Evaluation should be put at the heart of policy – efficient evaluations or experiments should be incorporated into any intervention from the start.