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Question
Performance decrease accessing elements >4-D matrix
*Introduction* I have an algorithm that loops billions (trillions) of times and manipulates a matrix stored in 7 dimensions [...
mer än 10 år ago | 2 answers | 1
2
answersQuestion
Calculating means in large matrix using logical indexing
Hi there, I have a large data matrix in which I want to calculate the average of elements satisfying certain conditions. The ...
ungefär 11 år ago | 1 answer | 0
1
answerSpeed optimization of partial inner product (norm)
My results show that the first is actually faster: n = 10000; P1 = rand(1,n); tic A1 = sqrt(sum(P1.^2)); to...
ungefär 11 år ago | 0
Question
atand(x) very much slower than atan(x)!?
Today I used atand(x) and atan(x). To my great surprise atand(x) was not just a little bit slower than atan(x) but is incredibly...
nästan 12 år ago | 2 answers | 2
