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Cross Validated : Recent Questions and Answers (Page 11)

Find answers to your questions about Cross Validated or help others by answering their Cross Validated questions.

Good way to transfer parent timeseries knowledge( trend/seasonal ) to children?

For example, I have a category A called fruit, its children are in category B, for example :applebanana....The whole category A have been already sold for 3 years , but...

Asked on 12/25/2021

0 answer

Why does the value of a conversion rate change the number of observations required when calculating statistical power?

This is probably basic, but I haven't come across it before: With a minimum detectable effect of 10% and a baseline conversion rate of 0.44% it takes 265,857 observations per...

Asked on 12/25/2021 by SeánMcK

1 answer

Interpreting group-level random effects of a multilevel model

I'm working with three level models in Stata. Example of one would be:use http://www.stata-press.com/data/r14/productivity, clear sort region state yearmixed gsp unemp || region: || state:What I'm interested in, are...

Asked on 12/23/2021

3 answer

Would the support vectors in SVM algorithm change with scaling of the functional margin?

Would the Support Vectors in the SVM algorithm change every time that I change the functional margin ?The optimization objective in the SVM algorithm is this -...

Asked on 12/23/2021 by Sud K

1 answer

How to complete analysis with small N?

I have a comparison study of 2 different interventions with students. There are 6 students in 1 class and 10 students in the second class. The statisticians are having a...

Asked on 12/23/2021 by Jess Jax

2 answer

Nested CV with Online Learning

I have a time series binary classification dataset. I am implementing an online learning Logistic Regression algorithm in Sklearn and am cross validating with Sklearn's TimeSeriesSplit method. I am...

Asked on 12/23/2021

1 answer

Validation and Learning Curves with Pipeline or Model Only?

I have a pretty complex Sklearn pipeline including Standardization, PCA, and more. I created a couple of models and would like to evaluate them with learning and validation curves....

Asked on 12/23/2021 by Odisseo

1 answer

leverage() diagnostic test not supported for glmmTMB models in r

I am using a glmmTMB to look at the effect of numerous variables on how far individuals travel (distance). The example below is one of many datasets I am working...

Asked on 12/23/2021 by Blundering Ecologist

1 answer

Minimum random sample with at least one persson that is infected with coronavirus

How large of a crowd will guarantee that at least one person is currently infected with coronavirus? For the sake of argument assume a "crowd" is approximated by a random...

Asked on 12/23/2021 by Code-Guru

0 answer

Which type of regression is most suitable for my situation?

I am working on research in R using a dataset from the German Comparative Candidate Survey (a survey of political candidates during election campaigns). I would like to run a...

Asked on 12/23/2021 by Nikolay Bogdanov

1 answer

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