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Numpy: Get random set of rows from 2D array

I have a very large 2D array which looks something like this: 7 Answers 7 ...
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How do I convert a float number to a whole number in JavaScript?

I'd like to convert a float to a whole number in JavaScript. Actually, I'd like to know how to do BOTH of the standard conversions: by truncating and by rounding. And efficiently, not via converting to a string and parsing. ...
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_

I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC. ...
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How do I get a human-readable file size in bytes abbreviation using .NET?

How do I get a human-readable file size in bytes abbreviation using .NET? 19 Answers 1...
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Which is better, number(x) or parseFloat(x)?

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How to put the legend out of the plot

I have a series of 20 plots (not subplots) to be made in a single figure. I want the legend to be outside of the box. At the same time, I do not want to change the axes, as the size of the figure gets reduced. Kindly help me for the following queries: ...
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UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?

If I put only an image in a button and set the imageEdgeInsets more close to the top, the image stays centered and all works as expected: ...
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Shuffle two list at once with same order

I'm using the nltk library's movie_reviews corpus which contains a large number of documents. My task is get predictive performance of these reviews with pre-processing of the data and without pre-processing. But there is problem, in lists documents and documents2 I have the same documents ...
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...将被包含在主窗口之下。在主窗口内的标题为LINGO Model – LINGO1的窗口是LINGO的默认模型窗口,建立的模型都都要在该窗口内编码实现。下面举两个例子。 例1.1 如何在LINGO中求解如下的LP问题: 在模型窗口中输入如下代码:...
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Python: Get the first character of the first string in a list?

How would I get the first character from the first string in a list in Python? 4 Answers ...