photo

Ernst Jan


2013 年からアクティブ

Followers: 0   Following: 0

メッセージ

統計

  • Thankful Level 1
  • First Answer

バッジを表示

Feeds

表示方法

質問


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 [...

10年以上 前 | 2 件の回答 | 1

2

回答

質問


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 ...

11年弱 前 | 1 件の回答 | 0

1

回答

回答済み
Speed 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...

11年弱 前 | 0

質問


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...

11年以上 前 | 2 件の回答 | 2

2

回答