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by layoutIfNeeded
1996 days ago
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“If the ratio of Number of Non-Zero (NNZ) elements to the size is less than 0.5, the matrix is sparse. While this is the mathematical definition, I will be using the term sparse for matrices with only NNZ elements and dense for matrices with all elements.” No, this is not the mathematical definition. An n-by-n matrix is usually considered sparse if the number of nonzero elements is O(n). Which means that the ratio of nonzero elements goes to zero as the matrix grows. |
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