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How to calculate a logistic sigmoid function in Python?
This is a logistic sigmoid function:
14 Answers
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Regular expression for first and last name
For website validation purposes, I need first name and last name validation.
23 Answers
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What is an intuitive explanation of the Expectation Maximization technique? [closed]
Expectation Maximization (EM) is a kind of probabilistic method to classify data. Please correct me if I am wrong if it is not a classifier.
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How can I count the number of matches for a regex?
Let's say I have a string which contains this:
5 Answers
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Remove duplicate values from JS array [duplicate]
I have a very simple JavaScript array that may or may not contain duplicates.
54 Answers
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Can the Unix list command 'ls' output numerical chmod permissions?
Is it possible when listing a directory to view numerical unix permissions such as 644 rather than the symbolic output -rw-rw-r--
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Check if all elements in a list are identical
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26 Answers
26
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How does RegexOptions.Compiled work?
What is going on behind the scenes when you mark a regular expression as one to be compiled? How does this compare/is different from a cached regular expression?
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COUNT DISTINCT with CONDITIONS
I want to count the number of distinct items in a column subject to a certain condition, for example if the table is like this:
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