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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...
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...
13년 초과 전 | 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...
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...
13년 초과 전 | 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Most of those manuals or books are out of date, or are unaware of the JIT compiler, or do not understand what the JIT compiler d...
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Most of those manuals or books are out of date, or are unaware of the JIT compiler, or do not understand what the JIT compiler d...
13년 초과 전 | 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 ...
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 ...
13년 초과 전 | 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...
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...
13년 초과 전 | 1
질문
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...
13년 초과 전 | 답변 수: 4 | 1
4
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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...
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...
거의 14년 전 | 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...
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...
거의 14년 전 | 0
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How do I write a good answer for MATLAB Answers?
An answer should _illuminate_ not _dazzle_.
How do I write a good answer for MATLAB Answers?
An answer should _illuminate_ not _dazzle_.
거의 14년 전 | 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 =...
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 =...
대략 14년 전 | 0
질문
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...
대략 14년 전 | 답변 수: 4 | 1
4
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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...
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...
대략 14년 전 | 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 ...
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 ...
대략 14년 전 | 1
| 수락됨
질문
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)...
대략 14년 전 | 답변 수: 5 | 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...
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...
대략 14년 전 | 1
제출됨
RPG Lab
A set of functions for generating and testing random permutations of the integers (1,2, ..., n).
대략 14년 전 | 다운로드 수: 1 |
