Andrew M. Thomas

this rocks. when indiana edu killed the student newspaper, Purdue stepped up, printed the forbidden issue, drove it to Bloomington and stocked the boxes.

Wow. That’s really untenable when solar offers 160x on your mileage, but it’s never about efficiency.

Stunning number

Issue went away last night for me!

Also having this issue!

In early 2025, beaver activity in the Brdy Protected Landscape Area, Czech Republic, contributed to the restoration of a wetland ecosystem. A family of beavers constructed a series of dams that coincidentally accomplished environmental goals of the Czech government, which had delayed its proposed project since 2018 for bureaucratic and financial reasons. The beaver-built dams saved the Czech government approximately US$1.2 million,

imagine if a family of beavers randomly showed up right now and finished whatever thing you've been putting off

Detroiters 🙌

Finally, I would also encourage everyone to take a look at Section S6 of the Supplementary Material, which contains interesting studies in the multiple changepoint setup: figshare.com/articles/dat...

Also, make sure to check out the Python package bclr on PyPI: pypi.org/project/bclr/

Not only do we recover the exact location of the changes, but we can uncover the nature of the changes (in which coordinates they occur) and how confident we are the changes occur in those coordinates! The paper contains a lot more examples along these lines.

If we consider a 3-dimensional Gaussian series with three changes at times 120, 320 and 400 specified by


1) x_1 increases
2) x_1 decreases, x_2 increases
3) x_2 decreases, x_3 increases

we get the following results for our posterior "z-scores" of the logistic regression coordinates:

This work gives one the ability to quantify the uncertainty around changes using a Bayesian approach and also leverage the inferential power of logistic regression to determine how the change occurs.

Thrilled to announce the publication of our article "Bayesian Changepoint Detection via Logistic Regression and the Topological Analysis of Image Series" in Technometrics: www.tandfonline.com/eprint/AYGJE...

America is beautiful, contradictory, unfinished. I am proud of our country even as we constantly strive to make it better, to protect and deepen our democracy, to fulfill its promise for each and every person who calls it home.

Happy Independence Day. No Kings in America.

A really nice write-up of our article can be found here: stat.cornell.edu/news/new-ana...

Other works, such as doi.org/10.2312/stag..., have found that TDA outperforms even deep learning models in data-scarce domains. Our study (above) provides more evidence for this conclusion.

Toward Reduction in False-Positive Thyroid Nodule Biopsies with a Deep Learning–based Risk Stratification System Using US Cine-Clip Images | Radiology: Artifici... A risk stratification system for thyroid nodules was developed to leverage US cine images and reduce false-positive biopsies by revising the American College of Radiology Thyroid Imaging Reporting ...

This study not only demonstrates the superior performance of TDA over radiomics models (and even better performance with a multimodal model), but also demonstrates satisfactory performance compared to the static-CNN model in doi.org/10.1148/ryai...

A proof-of-concept investigation into predicting follicular carcinoma on ultrasound using topological data analysis and radiomics Abstract Background Sonographic risk patterns identified in established risk stratification systems (RSS) may not accurately stratify follicular carcinoma from adenoma, which share many similar US cha...

A while back we published an article on using TDA in a limited data setting to predict follicular thyroid cancer using ultrasound imaging (in particular distinguish between adenoma and carcinoma): doi.org/10.1556/1647...

Jones sums up well the lunacy of modern industrial row-crop agriculture and the absurdity of the so-called “renewable fuel standard”

This article establishes easy-to-apply limit theory for the sublevel set persistence of stationary processes, for use in statistics and applications! Check it out!

Convergence of persistence diagrams for discrete time stationary processes - Journal of Applied and Computational Topology In this article we establish two fundamental results for the sublevel set persistent homology for stationary processes indexed by the positive integers. The first is a strong law of large numbers for ...

Pleased to announce the publication of my latest article "Convergence of persistence diagrams for discrete time stationary processes" in the Journal of Applied and Computational Topology (@springernature.com), and it's open access.

(WOLVES IN 5) X 2

An encyclical about how it’s actually called the “Cloud Gate” and not “The Bean”

Wolves faithful believed when no one else did.

Best (and smartest) fan base in the nation.

(S/O @kyletheige.bsky.social @skornorth.bsky.social @twowordspod.bsky.social @thedailywolves.bsky.social @nopantscrunch.bsky.social)

WOLVES IN 5

WOLVES WIN! WOLVES WIN! THERE ARE GOOD THINGS IN THIS WORLD!

Here’s a video my wife (not on bsky) captured of the cranes just enjoying life:

If you want an easy-to-use Python package for interpretable multivariate, multiple changepoint detection with uncertainty quantification, check out BCLR, now on PyPI: pypi.org/project/bclr/

Nebraska is home to one of North America's greatest wildlife phenomena Podcast Episode · Talk of Iowa · 03/14/2025 · 1 sec

We were there at the same time, so this episode really hits the nail on the head.

You don’t need to head to the Okavango delta. If you’re in Iowa, one of the world’s greatest wildlife spectacles is just a couple hours down I-80.

That… can’t be good?