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How do I determine k when using k-means clustering?
... Just adding a link to the Silhouette Analysis tutorial for python users scikit-learn.org/stable/auto_examples/cluster/…
– Chaitanya Shivade
May 8 '17 at 17:46
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Python中的X[:,0]和X[:,1] - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
Python中的X[:,0]和X[:,1]X[:,0]是numpy中数组的一种写法，表示对一个二维数组，取该二维数组第一维中的所有数据，第二维中取第0个数据，直观来说，X[:,0]就是取所有 X[:,0]是numpy中数组的一种写法，表示对一个二维数组，取该二维...
What is “thread local storage” in Python, and why do I need it?
In Python specifically, how do variables get shared between threads?
5 Answers
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“Diff” an image using ImageMagick
...age1 image2 -compose src diff.png
compare image1 image2 -compose src diff.pdf
The only difference between the 2 commands above: the first one shows the visual difference between the two images as a PNG file, the second one as a PDF.
The resulting diff file displays all pixels which are different...
浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...， 所以，这就是为什么能用 1000 0000表示-128的原因。
从而也是为什么char 是-128~127，而不是-127~127 ，short int 同样如此 -32768~32767 因为在16位中，-32768为原码为17位，丢弃最高位剩下的16为- 0 的原码相同。。。。
还有一个问...
Equivalent C++ to Python generator pattern
I've got some example Python code that I need to mimic in C++. I do not require any specific solution (such as co-routine based yield solutions, although they would be acceptable answers as well), I simply need to reproduce the semantics in some manner.
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How to get rid of blank pages in PDF exported from SSRS
I have a two-page SSRS report. When I exported it to PDF it was taking 4 pages due to its width, where the 2nd and 4th pages were displaying one of my fields from the table. I tried to set the layout size in report properties as width=18in and height =8.5in.
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How to calculate the sentence similarity using word2vec model of gensim with python
...an you provide a bit of pseudocode on how to do this (I'm not using gensim/python)
– dcsan
Sep 2 '18 at 4:53
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
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另外，又有两个BSTR的包容类_bstr_t和CComBSTR，它们是为了编程者使用BSTR更加方便，因为在他们的构造函数中都调用了SysAllocString，析构函数调用了SysFreeString，然而使用这两个类时仍然需要特别注意，否则也会导致不可预知的错...
C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++中判断文件、目录是否存在的几种方法在我们平时的编程时，经常需要判断文件或者目录是否存在，相对来说判断文件的存在性比较简单，目录则比较复杂。下面就详细的介绍几种方法。...在我们平时的编程时，经常需要判断...