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3 Jun 2024: March 2016Abstract. This paper uses a generalized Stolarsky’s invariance principle to approximate the permutation $p$-value for two-sample linear test statistics.

3 Jun 2024: In the first part, I will use the potential outcomes framework to define the conditional randomization test, distinguish it with related ideas, and discuss some recent applications.

3 Jun 2024: Quasi-randomization tests: Permute time step, hospital ward, and/or crossover order. Qingyuan Zhao (University of Cambridge) What is a randomization test? ... Permutation tests for treatment effect in randomized experiments. This generalizes Fisher’s

3 Jun 2024: We show that the usual likelihood ratio χ2-test is valid non-asymptotically. ... Our proof relies on expressing the test statistic as the minimum eigenvalue of a Wishart variable and using a representation of its distribution using Legendre polynomials.

5 Apr 2022: So what is the problem with implementing road pricing? What are the challenges and, in particular, what technology, economic and network modelling issues need to be overcome to make it happen?

3 Jun 2024: It is mostly applicable to matched observational studies; 2. It only tests the sharp null hypothesis; 3.

3 Jun 2024: We apply ideas from post-selection inference to randomization tests for adaptive experiments.

3 Jun 2024: Cross-screening in observational studies that test many hypotheses.

26 Apr 2009: The current draft of a paper on pricing and effective bandwidths that I presented at the recent Internet Economics Workshop. ... If you are interested in either of these areas, do let me know (atand Nicholas Economides' Economics of Networks' are sources

Correction 1: A note on the existence of likelihood ratio tests of any size.