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Fast calculation of short cumulative product vector
Nobody has followed Knut's suggestion: y(n) = y(n-1)*y(1) It is in fact a special case of Horner's Method for evaluating a...

12年以上 前 | 0

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alternative to log?
No matter what transformation you use, the result, prod(pi, i=1:n) --> 0, so eventually you will get underflow in fixed precisio...

12年以上 前 | 0

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Loop unrolling question
Most of those manuals or books are out of date, or are unaware of the JIT compiler, or do not understand what the JIT compiler d...

12年以上 前 | 0

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Loop unrolling question
David, What you call _loop unrolling_ is not. Here is a rolled-up loop: for i = 1:n a(i) = b(i)*c(i) end ...

12年以上 前 | 0

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Why does 1 - 2/3 - 1/3 not equal zero?
Ned, Let me add to the confusion by asking 1. Why does |en1 = (1 - 2/3) - 1/3 = 5.5511e-017 = 2^(-54) = eps/2^2|? 2. Why does...

12年以上 前 | 1

質問


What does RANDPERM miss?
Abstractly, a random permutation generator (RPG) is a function that maps a random bit-string of length |b| into a permutation of...

12年以上 前 | 4 件の回答 | 1

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How to average only positive values in an array?
At the risk of offending the "vectorizers", the function below is 2 to 3 times faster than Jan's answer: function MeanP...

12年以上 前 | 0

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MATLAB's accuracy of digits number
Here is a quotation from Prof Nick Trefethen FRS, Oxford: 11. _No physical constants are known to more than around eleven digit...

13年弱 前 | 0

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How do I write a good answer for MATLAB Answers?
An answer should _illuminate_ not _dazzle_.

13年弱 前 | 2

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random elements from specific rows in matrix
function rrelems = RandRowElems(A) % USE: m = 10; n = 10^6; % A = ceil(100*rand(m,n)); % tic;relems =...

13年弱 前 | 0

質問


What is the "best" way to Generate a Bernoulli Process?
A *Bernoulli Process* is a sequence of iid (independent, identically-distributed) random variables |x1,x2,...,xi,...|, where t...

約13年 前 | 4 件の回答 | 1

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Profiler Paradox
In certain cases the profiler is worse than useless -- it is misleading. As you will have noticed, the profiler adds a lot of ov...

約13年 前 | 0

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Does MATLAB have a Birthday Problem?
Reply from Derek O'Connor: I must apologize for the omission of the RNG used. It was in my original draft but somehow got left ...

約13年 前 | 1

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質問


Does MATLAB have a Birthday Problem?
The Birthday Paradox or problem asks for the probability that in a room of n people, 2 or more have the same birthday (not date)...

約13年 前 | 5 件の回答 | 3

5

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Can MATLAB draw graphs or networks with a regular structure?
Berk, Graph layout is a very difficult problem and has been studied for many years. AT&T has a department or section dedica...

約13年 前 | 1

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RPG Lab
A set of functions for generating and testing random permutations of the integers (1,2, ..., n).

約13年 前 | ダウンロード 1 件 |

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