4 ms·
I dunno I've done a lot of high-dim knn that were quite pragmatically useful
by nmca 3y ago
I dunno I've done a lot of high-dim knn that were quite pragmatically useful
- ldjkfkdsjnv 3y agohttps://en.wikipedia.org/wiki/Curse_of_dimensionality https://en.wikipedia.org/wiki/Curse_of_dimensionality
- nmca 3y agoMaybe we're talking at cross purposes; what I mean is that PCA+KNN or other tricks mean that for high dim and large amounts of data you can get useful results; with the enlarged view of KNN as "anything where the last step is KNN" your statement that it's "astoundingly bad" is wrong. But for the narrow view of just KNN then sure cod applies.