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answer all reasoning according to Algorithmic properties of the k-means problem 1) NP-hard if the dimensionality of the data is at least 2 ( d>=2
answer all reasoning according to Algorithmic properties of the k-means problem
1) NP-hard if the dimensionality of the data is at least 2 (d>=2). (how?)
2) Finding the best solution in polynomial time is infeasible. (Really?)
3) For d=1 the problem is solvable in polynomial time (how?)
4) A simple iterative algorithm works quite well in practice
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