Questions tagged [data-analysis]

64 questions
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Calculating the density of data points around a specified point in a k-dimensional space

I am looking for a way of calculating how close data points are to a specified point in a k-dimensional space. My current method involves pythag to calulate the distance between the specified point and each of the data points. However, when working…
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Clustering sets of sparse vectors with high dimensionality

I'm trying to write a simple recommendation system. I have a set of products that exist in a set of categories and I know whether a given customer liked a subset of the items. From this I can deduce an "affinity" from each customer to each category…