The Calculation

The idiosyncrasies of tabular data

The things that make tabular data different

Aug 16, 2025 • Calvin McCarter

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July 2025

July 2024

Unmasking Trees for Tabular Data

When tabular imputation is the vibe, unmasking is low-key goated

Jul 6, 2024 • Calvin McCarter

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May 2024

On AI, biology, and China's prospects for leading the next techno-scientific revolution

Tanner Greer at Scholar’s Stage has written an informative report describing the Chinese government’s ambition to lead the next techno-scientific…

May 19, 2024 • Calvin McCarter

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What exactly has TabPFN learned to do?

TabPFN [Hollmann et al., 2023], a Transformer model pretrained to perform in-context learning on fresh tabular classification problems, was presented at…

May 12, 2024 • Calvin McCarter

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April 2024

March 2024

December 2023

July 2023

Mapping between two Gaussians using optimal transport and the KL-divergence

Suppose you have two multivariate Gaussian distributions \( S\) and \(T\), parameterized as \( N(\mu_S, \Sigma_S)\) and \( N(\mu_T, \Sigma_T)\).

Jul 16, 2023 • Calvin McCarter

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Computing the product of Gaussian distributions

Suppose you have \(K\) multivariate Gaussian distributions, each of dimensionality \(N\).

Jul 16, 2023 • Calvin McCarter

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A visual exploration of the softmax function

The softmax function \(\sigma(\mathbf{z})\) maps vectors to the probability simplex, making it a useful and ubiquitous function in machine learning.

Jul 16, 2023 • Calvin McCarter

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