<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="3.10.0">Jekyll</generator><link href="https://rje42.github.io/feed.xml" rel="self" type="application/atom+xml" /><link href="https://rje42.github.io/" rel="alternate" type="text/html" /><updated>2026-05-07T16:48:09+00:00</updated><id>https://rje42.github.io/feed.xml</id><title type="html">Group Website</title><subtitle>Robin Evans&apos; Group Website</subtitle><author><name>Robin J. Evans</name><email>evans@stats.ox.ac.uk</email></author><entry><title type="html">Follow-up to mDAGs—now with selection bias!</title><link href="https://rje42.github.io/posts/2025/09/Selection-Bias/" rel="alternate" type="text/html" title="Follow-up to mDAGs—now with selection bias!" /><published>2025-09-26T00:00:00+00:00</published><updated>2025-09-26T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/09/Selection-Bias</id><content type="html" xml:base="https://rje42.github.io/posts/2025/09/Selection-Bias/"><![CDATA[<p>Ryan Carey, Marina Maciel Ansanelli, Elie Wolfe, and Robin Evans have <a href="https://arxiv.org/abs/2509.20433">released a paper</a> 
characterizing the <em>interventional</em> equivalence class of directed acyclic graph models 
under both marginalization <em>and</em> selection (or conditioning).</p>

<p>They show that, unlike for the corresponding model under just marginalization (<a href="https://arxiv.org/abs/1408.1809">mDAGs</a>), 
there are subtle differences between the ‘single-world’ intervention scheme, and weaker
probing schemes (<a href="https://arxiv.org/pdf/2407.01686">Ansanelli et al., 2024</a>).  They also 
provide a separation criterion that is at least as powerful as m-separation.</p>

<hr />]]></content><author><name>Robin J. Evans</name><email>evans@stats.ox.ac.uk</email></author><category term="marginal modelling" /><category term="Bayesian networks" /><summary type="html"><![CDATA[Ryan Carey, Marina Maciel Ansanelli, Elie Wolfe, and Robin Evans have released a paper characterizing the interventional equivalence class of directed acyclic graph models under both marginalization and selection (or conditioning).]]></summary></entry><entry><title type="html">Linying Yang releases paper on ‘frengression’</title><link href="https://rje42.github.io/posts/2025/08/Frengression/" rel="alternate" type="text/html" title="Linying Yang releases paper on ‘frengression’" /><published>2025-08-05T00:00:00+00:00</published><updated>2025-08-05T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/08/Frengression</id><content type="html" xml:base="https://rje42.github.io/posts/2025/08/Frengression/"><![CDATA[<p><a href="https://linyingyang.github.io/">Linying Yang</a> has released a paper, <a href="https://arxiv.org/abs/2508.01018">Frugal, Flexible, Faithful: Causal Data 
Simulation via Frengression</a>, which uses a 
<em>generative</em> method for simulating causal datasets.  This builds on the frugal
parameterization (<a href="https://arxiv.org/abs/2109.03694">Evans and Didelez, 2024</a>) 
in various ways:</p>

<ul>
  <li>
    <p>it is <em>frugal</em>: it makes use of variation independent quantities, so these 
 can be switched without compromising the interpretation;</p>
  </li>
  <li>
    <p>it is <em>flexible</em>: in our case it uses neural networks, but in principle it
 can make use of any method;</p>
  </li>
  <li>
    <p>it is <em>marginal</em>: the estimand is marginally causal, i.e. it is of the form
 <span>$Y(t)$</span> <strong>not</strong> <span>$Y(t) | Z=z$</span>;</p>
  </li>
  <li>
    <p>it is <em>faithful</em>: the estimand can be exchanged for any other, while still retaining
 the structure of the original data;</p>
  </li>
  <li>
    <p>it is <em>longitudinal</em>: longitudinal and survival data can be estimated/simulated,
 as well as the static case;</p>
  </li>
  <li>
    <p>it is <em>extrapolative</em>: continuous treatments can be extended under an additive
 noise model;</p>
  </li>
  <li>
    <p>it is <em>privacy preserving</em>: it supports differential privacy.</p>
  </li>
</ul>

<p>We show that it is competitive with a range of other, more specific, generative 
methods over a suite of these settings.</p>

<p>The work is joint with Xinwei Shen (UW) and Robin Evans.</p>

<hr />]]></content><author><name>Robin J. Evans</name><email>evans@stats.ox.ac.uk</email></author><category term="causal simulation" /><category term="frugal parameterization" /><summary type="html"><![CDATA[Linying Yang has released a paper, Frugal, Flexible, Faithful: Causal Data Simulation via Frengression, which uses a generative method for simulating causal datasets. This builds on the frugal parameterization (Evans and Didelez, 2024) in various ways:]]></summary></entry><entry><title type="html">Daniel Manela and Linying Yang present poster at UAI 2025</title><link href="https://rje42.github.io/posts/2025/07/UAI-25/" rel="alternate" type="text/html" title="Daniel Manela and Linying Yang present poster at UAI 2025" /><published>2025-07-24T00:00:00+00:00</published><updated>2025-07-24T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/07/UAI-25</id><content type="html" xml:base="https://rje42.github.io/posts/2025/07/UAI-25/"><![CDATA[<p><img src="/images/UAI25.png" alt="UAI 2025" width="200" /></p>

<p>Daniel Manela and Linying Yang have been presenting their paper <a href="https://raw.githubusercontent.com/mlresearch/v286/main/assets/vassimon-manela25a/vassimon-manela25a.pdf">Testing 
Generalizability in Causal Inference</a> at
<em>Uncertainty in Artificial Intelligence</em> 2025.  The paper provides a new method
for assessing whether or not a dataset is transportable.</p>

<hr />]]></content><author><name>Robin J. Evans</name><email>evans@stats.ox.ac.uk</email></author><category term="UAI" /><summary type="html"><![CDATA[]]></summary></entry><entry><title type="html">New Research Intern</title><link href="https://rje42.github.io/posts/2025/07/Research-Intern/" rel="alternate" type="text/html" title="New Research Intern" /><published>2025-07-07T00:00:00+00:00</published><updated>2025-07-07T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/07/Research-Intern</id><content type="html" xml:base="https://rje42.github.io/posts/2025/07/Research-Intern/"><![CDATA[<p><img src="/images/jono3.jpg" alt="Jonathan Rollings" width="300" /></p>

<p>Today we welcome a new researcher, Jonathan Rollings.  He joins us from the 
University of Surrey for eight weeks, and he’ll be working with Daniel Manela 
on the link between vine copula independence models and graphical models.</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry><entry><title type="html">Paper Accepted to UAI 2025</title><link href="https://rje42.github.io/posts/2025/05/UAI-25/" rel="alternate" type="text/html" title="Paper Accepted to UAI 2025" /><published>2025-05-20T00:00:00+00:00</published><updated>2025-05-20T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/05/UAI-25</id><content type="html" xml:base="https://rje42.github.io/posts/2025/05/UAI-25/"><![CDATA[<p><img src="/images/UAI25.png" alt="UAI 2025" width="200" /></p>

<p>Daniel Manela and Linying Yang’s paper on a new framework for testing generalizabilty 
has been accepted to <em>Uncertainty in Artificial Intelligence</em> 2025.  Congratulations, 
and have fun in Rio!</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry><entry><title type="html">Augmented marginal ratio</title><link href="https://rje42.github.io/posts/2025/03/AMR/" rel="alternate" type="text/html" title="Augmented marginal ratio" /><published>2025-03-23T00:00:00+00:00</published><updated>2025-03-23T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/03/AMR</id><content type="html" xml:base="https://rje42.github.io/posts/2025/03/AMR/"><![CDATA[<p><a href="https://linyingyang.github.io/">Linying Yang</a> has today shared a manuscript
on <a href="https://arxiv.org/abs/2503.15989"><em>Outcome-informed</em> weighting for robust ATE estimation</a>.  The
paper, inspired by <a href="https://proceedings.neurips.cc/paper_files/paper/2023/hash/a51f974947c42b40a40a882a7d9b2479-Abstract-Conference.html">Taufiq et al., 2023</a>,
augments the <em>marginal ratio</em> estimand in that paper in a manner analogous to <a href="https://en.wikipedia.org/wiki/Inverse_probability_weighting#Augmented_Inverse_Probability_Weighted_Estimator_(AIPWE)">augmented inverse 
probability weighting</a>,
securing doubly-robust properties.</p>

<p>In particular, it can filter out <a href="https://en.wikipedia.org/wiki/Instrumental_variables_estimation">instruments</a> 
and spurious variables, and allows for inference that out-performs the original 
marginal ratio.</p>

<p>The work is joint with Robin Evans.</p>

<hr />]]></content><author><name>Robin J. Evans</name><email>evans@stats.ox.ac.uk</email></author><category term="inverse probability weighting" /><summary type="html"><![CDATA[Linying Yang has today shared a manuscript on Outcome-informed weighting for robust ATE estimation. The paper, inspired by Taufiq et al., 2023, augments the marginal ratio estimand in that paper in a manner analogous to augmented inverse probability weighting, securing doubly-robust properties.]]></summary></entry><entry><title type="html">Power Likelihood Paper Accepted</title><link href="https://rje42.github.io/posts/2025/01/Power-Likelihood/" rel="alternate" type="text/html" title="Power Likelihood Paper Accepted" /><published>2025-01-10T00:00:00+00:00</published><updated>2025-01-10T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2025/01/PowerLikelihood</id><content type="html" xml:base="https://rje42.github.io/posts/2025/01/Power-Likelihood/"><![CDATA[<p><img src="/images/DataFusion.jpeg" alt="Data Fusion" width="300" /></p>

<p>Xi Lin’s paper on a <a href="https://arxiv.org/abs/2304.02339">power likelihood method</a> for combining randomized controlled 
rials and observational data has been accepted to <em>Biometrics</em>.  Co-authors are 
Jens Magelund Tarp (Novo Nordisk) and Robin Evans.</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22right%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22right%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry><entry><title type="html">Welcome to Jakob Zeitler!</title><link href="https://rje42.github.io/Jakob/" rel="alternate" type="text/html" title="Welcome to Jakob Zeitler!" /><published>2025-01-03T00:00:00+00:00</published><updated>2025-01-03T00:00:00+00:00</updated><id>https://rje42.github.io/Jakob</id><content type="html" xml:base="https://rje42.github.io/Jakob/"><![CDATA[<p><img src="/images/Jakob1.jpg" alt="Jakob Zeitler" width="200" /></p>

<p>Welcome to <a href="https://jakobzeitler.github.io/">Jakob Zeitler</a>, who joins us as a
Postdoctoral Researcher following a PhD at UCL with <a href="https://www.homepages.ucl.ac.uk/~ucgtrbd/">Ricardo Silva</a>.  He
is funded by the Danish Foundations’ <a href="https://smartbiomed.dk/">SMARTbiomed Pioneer Centre</a>,
and co-supervised by <a href="https://publichealth.ku.dk/about-the-department/biostat/?pure=en/persons/743779">Prof. Erin Gabriel</a>.</p>

<p>Jakob’s research interests include partial identification, active learning and
Bayesian optimization.</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22right%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22right%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry><entry><title type="html">Paper Accepted to NeurIPS 2024</title><link href="https://rje42.github.io/posts/2024/12/NeurIPS-24/" rel="alternate" type="text/html" title="Paper Accepted to NeurIPS 2024" /><published>2024-12-05T00:00:00+00:00</published><updated>2024-12-05T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2024/12/NeurIPS</id><content type="html" xml:base="https://rje42.github.io/posts/2024/12/NeurIPS-24/"><![CDATA[<p><img src="/images/NeurIPS_2024.jpg" alt="NeurIPS 2024" width="400" /></p>

<p>Dan Manela and Laura Battaglia presented a poster associated with 
<a href="https://arxiv.org/abs/2411.01295">de Vassimon Manela et al.</a> (Marginal Causal Flows for Validation and Inference) 
at the <a href="https://neurips.cc/Conferences/2024">Thirty-Eighth Annual Conference on Neural Information Processing Systems</a>, 
in Vancouver.  The paper provides a generative method using normalizing flows to 
simulate from causal models under the frugal parameterization.</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry><entry><title type="html">Challenges in Categorical Data Analysis</title><link href="https://rje42.github.io/posts/2024/11/CCDA/" rel="alternate" type="text/html" title="Challenges in Categorical Data Analysis" /><published>2024-10-31T00:00:00+00:00</published><updated>2024-10-31T00:00:00+00:00</updated><id>https://rje42.github.io/posts/2024/11/CCDA</id><content type="html" xml:base="https://rje42.github.io/posts/2024/11/CCDA/"><![CDATA[<p>Robin Evans is the plenary speaker at <a href="https://sites.google.com/view/ccda2024/home">Challenges in Categorical Data Analysis</a>, 
a workshop being held at LSE.  Linying Yang also attended.</p>]]></content><author><name>Robin J. Evans</name></author><summary type="html"><![CDATA[Robin Evans is the plenary speaker at Challenges in Categorical Data Analysis, a workshop being held at LSE. Linying Yang also attended.]]></summary><media:thumbnail xmlns:media="http://search.yahoo.com/mrss/" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" /><media:content medium="image" url="https://rje42.github.io/%7B%22focal_point%22=%3E%22top%22%7D" xmlns:media="http://search.yahoo.com/mrss/" /></entry></feed>