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Multiple linear regression in Python

...model.LinearRegression() clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts], [t.y for t in texts]) Then clf.coef_ will have the regression coefficients. sklearn.linear_model also has similar interfaces to do various kinds of regularizations on the regression. ...
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Detect encoding and make everything UTF-8

... If you apply utf8_encode() to an already UTF-8 string, it will return garbled UTF-8 output. I made a function that addresses all this issues. It´s called Encoding::toUTF8(). You don't need to know what the encoding of your strings is. It ...
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What's the difference between utf8_general_ci and utf8_unicode_ci?

Between utf8_general_ci and utf8_unicode_ci , are there any differences in terms of performance? 8 Answers ...
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort

... 86 General numeric sort compares the numbers as floats, this allows scientific notation eg 1.234E1...
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C pointer to array/array of pointers disambiguation

... int* arr[8]; // An array of int pointers. int (*arr)[8]; // A pointer to an array of integers The third one is same as the first. The general rule is operator precedence. It can get even much more complex as function pointers come ...
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What is Bit Masking?

...Result: 00000101b Masking is implemented using AND, so in C we get: uint8_t stuff(...) { uint8_t mask = 0x0f; // 00001111b uint8_t value = 0x55; // 01010101b return mask & value; } Here is a fairly common use-case: Extracting individual bytes from a larger word. We define the high...
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Regex to validate password strength

... 438 You can do these checks using positive look ahead assertions: ^(?=.*[A-Z].*[A-Z])(?=.*[!@#$&a...
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presentModalViewController:Animated is deprecated in ios6

... answered Apr 8 '13 at 8:03 VishalVishal 8,19655 gold badges3333 silver badges5252 bronze badges ...
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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?

I'm working with map data, and the Latitude/Longitude extends to 8 decimal places. For example: 8 Answers ...
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What to do about Eclipse's “No repository found containing: …” error messages?

... No repository found containing: osgi.bundle,org.eclipse.emf.codegen,2.8.0.v20120917-0436 No repository found containing: osgi.bundle,org.eclipse.emf.codegen.ecore,2.8.1.v20120917-0436 No repository found containing: osgi.bundle,org.eclipse.emf.codegen.ecore.ui,2.8.0.v20120917-0436 No ...