probability

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Select items based on popularity: Avoiding a glorified sort

I have a site where users can post and vote on suggestions. On the from page I initially list 10 suggestions and the header fetches a new random suggestion every 7 seconds.[详细]

2023-03-05 09:45 分类：问答
Arbitrary distribution -> Uniform distribution (Probability Integral Transform?)

I have 500,000 values for a variable derived from financial markets. Specifically, this variable represents distance from the mean (in standard deviations). This variable has a arbitrary distribution.[详细]

2023-03-04 16:11 分类：问答
Why is XOR the default way to combine hashes?

Say you have two hashes H(A) and H(B) and you want to combine them. I\'ve read that a good way to combine two hashes is to XOR them, e.g. XOR( H(A), H(B) ).[详细]

2023-03-03 02:18 分类：问答
Heavy tail distribution - Weibull [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow.[详细]

2023-03-02 16:32 分类：问答
Determining object identities using image recognition

I\'ve written some image analysis software that can determine the basic shape, color, and dimensions of what it considers to be the most dominant object in the image.[详细]

2023-02-28 18:07 分类：问答
How can I plot this kind of smoothed probability distribution in Matlab?

If you have the equation to the PDF, you can simply plot it for specified values of x. For example, Normal distribution[详细]

2023-02-25 13:53 分类：问答
Hexadecimals and probability [closed]

Closed. This question is off-topic. It is not currently accepting answers. 开发者_StackOverflowWant to improve this question? Update the question so it's on-topic for Stack Overflow.[详细]

2023-02-24 17:30 分类：问答
Choosing n numbers with fixed sum

In some code I want to choose n random numbers in [0,1) which sum to 1. I do so by choosing the numbers independently in [0,1) and normalizing them by dividing each one by the total sum:[详细]

2023-02-24 08:28 分类：问答
generating poisson variables in c++

I implemented this function to generate a poisson random variable typedef long unsigned int luint; luint poisson(luint lambda) {[详细]

2023-02-24 06:59 分类：问答
Shuffle elements of an array/n numbers uniformly randomly. Possibley in expected O(n) time

Is it possible to shuffle elements of an n-sized array uniformly, i.e. the probability of any of the n! combinations occurring is the same, in expected O(n) time. How so?[详细]

2023-02-24 04:05 分类：问答