entropy

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Cross Entropy for Language modelling

im currently working on a classification task using language modelling. The first part of the project involved using n-gram language models to classify documents using c5.0. The final part of the proj[详细]

2023-02-16 12:11 分类：问答
How does the entropy of a string of English text signify low quality?

Jeff Atwood recently tweeted a link to a CodeReview post where he wanted to know if the community could improve his \"calculating entropy of a string\" code snippet. He explained, \"We\'re calculating[详细]

2023-02-12 22:03 分类：问答
Get, or calculate the entropy of an image with Ruby and imagemagick

How to find the \"entropy\" with imagemagick, preferably mini_magic, in Ruby? I need this as part of a larger project, finding \"interestingness\" in an image so to crop it.[详细]

2023-02-09 12:44 分类：问答
Computation of Mutual Information

Suppose M is a set of objects m each having attributes X and Y. Now if X and Y can have only one value for given m (i.e. X,Y are random variables with P(X=x_i|M=m_i), P(Y=y_i|M=m_i)), it\'s possible t[详细]

2023-02-09 09:19 分类：问答
Is user delay between random takes is good improvement for PRNG?

I thought that for making random choices for example for next track in a player or next page in the browser it could be possible to use time as \'natural phenomenon\', for example decent RPNG just can[详细]

2023-02-07 07:25 分类：问答
Picture entropy calculation

I\'ve run into some nasty problem with my recorder. 开发者_JAVA百科Some people are still using it with analog tuners, and analog tuners have a tendency to spit out \'snow\' if there is no signal prese[详细]

2023-01-29 10:17 分类：问答
sources of "uniqueness"/entropy on embedded systems

I have an embedded system. What I would like for it to do when it powers up or otherwise resets, is to generate a unique ID, so that on different restarts a different unique ID is generated with high[详细]

2023-01-17 14:23 分类：问答
Fast, Secure Random Numbers

I was searching for a faster alternative to /dev/urandom when I stumbled across this interesting tidbit:[详细]

2023-01-14 14:52 分类：问答
Safe mixing of entropy sources

Let us assume we\'re generating very large (e.g. 128 or 256bit) numbers to serve as keys for a block cipher.[详细]

2023-01-10 19:38 分类：问答
Help with the calculation (and usefulness) of password entropy

This is a two part question: Part 1 First, dealing with calculating the entropy of a password in PHP.I have been unable to find any code examples that are empirically sound and would really like som[详细]

2023-01-06 19:43 分类：问答