Show threadArjan BoltjesJun 20, 2024

While going over the methods, I noticed they used #NMF where #PCA is mostly used. And while refreshing ;) my knowledge of the differences between the two, I stumbled upon a simple question/answer on #CrossValidated: https://stats.stackexchange.com/questions/502072/what-is-the-main-difference-between-pca-and-nmf-and-why-to-choose-one-rather-tha

This links to a book from #TrevorHastie, offered for free on his website: https://hastie.su.domains/publications.html

Another reason to finally have a look at "An Introduction to #Statistical Learning with Applications in R (second edition)" by James, Witten, et al.

#rstats

What is The Main Difference between PCA and NMF and why to choose one rather than the other?

I have to develop some analyses to study cancer data. I want to use NMF and PCA. Basically these tools choose the best factorization rank and the number of components that is meaningful to your ana...

Cross Validated
David BarangerJun 6, 2023

The enshitification of yet another beloved website - what will we do when we can't trust whether Stack Overflow or Cross Validated posts are real or AI nonsense? https://meta.stackexchange.com/questions/389811/moderation-strike-stack-overflow-inc-cannot-consistently-ignore-mistreat-an

#enshitification #stackoverflow #crossvalidated @pluralistic

Moderation Strike: Stack Overflow, Inc. cannot consistently ignore, mistreat, and malign its volunteers

Update On August 2nd, 2023, negotiations between community representatives and representatives of the company concluded with an agreement being reached. The details of the agreement can be found at

Meta Stack Exchange
pengzell.bsky.socialJan 12, 2023

Question for the #machinelearning minded folks.

Has someone made a random tree algorithm that partitions *ordered lists* into sets with a similar ordering?

Posted on #crossvalidated here: https://stats.stackexchange.com/questions/601816/random-tree-partition-of-ordered-lists

Preemptive apologies for garbled terminology & notation.

Random tree partition of ordered lists

In a standard random tree, the input is a dataset of $N$ observations $x_1, x_2, \dots, x_N$ and the algorithm partitions the data in such a way that observations with similar values are grouped to...

Cross Validated