Top "Knn" questions

In pattern recognition, k-nearest neighbors (k-NN) is a classification algorithm used to classify example based on a set of already classified examples.

PCA and KNN algorithm

I am using KNN to classify handwritten digits. I also now have implemented PCA to reduce the dimensionality. From 256 I …

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How to convert distance into probability?

Сan anyone shine a light to my matlab program? I have data from two sensors and i'm doing a kNN …

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Faster kNN algorithm in Python

I want to code my own kNN algorithm from scratch, the reason is that I need to weight the features. …

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K Nearest-Neighbor Algorithm

Maybe I'm rather stupid but I just can't find a satisfying answer: Using the KNN-algorithm, say k=5. Now I try …

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How do I traverse a KDTree to find k nearest neighbors?

This question concerns the implementation of KNN searching of KDTrees. Traversal of a KDTree to find a single best match (…

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Computing sparse pairwise distance matrix in R

I have a NxM matrix and I want to compute the NxN matrix of Euclidean distances between the M points. …

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