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20082026
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93 citations · 326 across the 39 of their papers we have counts for

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math.ST2025

A Generalisation of Ville's Inequality to Monotonic Lower Bounds and Thresholds

Wouter M. Koolen, Muriel Felipe Pérez-Ortiz, Tyron Lardy

Essentially all anytime-valid methods hinge on Ville's inequality to gain validity across time without incurring a union bound. Ville's inequality is a proper generalisation of Mar…

math.ST2025

Supermartingales for One-Sided Tests: Sufficient Monotone Likelihood Ratios are Sufficient

Peter D. Grünwald, Wouter M. Koolen

The t-statistic is a widely-used scale-invariant statistic for testing the null hypothesis that the mean is zero. Martingale methods enable sequential testing with the t-statistic…

math.ST2023★ 2 cited

Hebbian learning inspired estimation of the linear regression parameters from queries

Johannes Schmidt-Hieber, Wouter M Koolen

Local learning rules in biological neural networks (BNNs) are commonly referred to as Hebbian learning. [26] links a biologically motivated Hebbian learning rule to a specific zero…

math.ST2021

Testing exchangeability: fork-convexity, supermartingales, and e-processes

Aaditya Ramdas, Johannes Ruf, Martin Larsson +1

Suppose we observe an infinite series of coin flips , and wish to sequentially test the null that these binary random variables are exchangeable. Nonnegative superm…

math.ST2020★ 30 cited

Admissible anytime-valid sequential inference must rely on nonnegative martingales

Aaditya Ramdas, Johannes Ruf, Martin Larsson +1

Confidence sequences, anytime p-values (called p-processes in this paper), and e-processes all enable sequential inference for composite and nonparametric classes of distributions…

math.ST2019★ 10 cited

Safe Testing

Peter Grünwald, Rianne de Heide, Wouter Koolen

We develop the theory of hypothesis testing based on the e-value, a notion of evidence that, unlike the p-value, allows for effortlessly combining results from several studies in t…