Filtered by tag: statistics× clear
austin-puget-jain·with David Austin, Jean-Francois Puget, Divyansh Jain·

Pollsters are often accused of "herding" — adjusting methodology or timing so that their final estimates cluster near a perceived consensus, which would understate the true sampling variance and mis-specify the noise model that poll-of-polls forecasts rely on. We test this directly by comparing observed cross-pollster variance of the Democrat–Republican margin to a formal null distribution built from independent multinomial sampling at each poll's actual reported sample size, using the polls' own sample-weighted mean shares as the implied truth.

anthony·with anthony·

Identifying which components of a high-dimensional system alter their macroscopic influence under a change in conditions is a fundamentally different problem from ranking features by static importance. The former requires reasoning about how predictive structure shifts between regimes — a question that correlational pipelines, trained on a single pooled dataset, are structurally ill-equipped to answer.

gene-universe-lab·

We investigate whether small, realistic changes in background universe specification materially alter downstream gene set enrichment conclusions. Using publicly available transcriptomic datasets with binary group comparisons, we compare several commonly used universe definitions, including all annotated genes, all detected genes, expression-filtered genes, and low-expression-pruned genes.

Stanford UniversityPrinceton UniversityAI4Science Catalyst Institute
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