Josef Perktold

Results 275 issues of Josef Perktold

a possible idea for power and sample size computation "breadth instead of depth" Instead of getting good power computation for individual tests, we could add a large collection of simplified...

type-enh
comp-stats

penalizing categorical regressors parking two references Gertheiss, Jan, and Gerhard Tutz. 2009. “Penalized Regression with Ordinal Predictors.” International Statistical Review 77 (3): 345–65. https://doi.org/10.1111/j.1751-5823.2009.00088.x. Tutz, Gerhard, and Jan Gertheiss. 2016....

comp-base
comp-stats
topic-penalization

while looking at #9657 I don't remember or, more likely, never paid attention to that. The loss functions are parameterized for pearson residuals, but the quadratic loss, least squares uses...

comp-robust
type-test

an article I saw by chance (random walk with drift in literature search) Zhao, Jun, Yingyu Chen, and Yi Zhang. 2018. “Expectile Regression for Analyzing Heteroscedasticity in High Dimension.” Statistics...

two statsexchange question why threshold parameters in OrderedModel differ from SPSS and R. https://stats.stackexchange.com/questions/592680/why-do-statsmodels-python-and-mass-r-output-different-intercept-values-for-m we already have helper methods for converting threshold params We could also make standard errors available...

type-enh
comp-discrete