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Cluster analysis in R: determine the optimal number of clusters
...inity propagation (AP) clustering, see http://dx.doi.org/10.1126/science.1136800
library(apcluster)
d.apclus <- apcluster(negDistMat(r=2), d)
cat("affinity propogation optimal number of clusters:", length(d.apclus@clusters), "\n")
# 4
heatmap(d.apclus)
plot(d.apclus, d)
Six. Gap Statistic f...
Where does this come from: -*- coding: utf-8 -*-
...
This way of specifying the encoding of a Python file comes from PEP 0263 - Defining Python Source Code Encodings.
It is also recognized by GNU Emacs (see Python Language Reference, 2.1.4 Encoding declarations), though I don't know if it was the first program to use that syntax.
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Delete column from pandas DataFrame
...01
cs95
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answered Nov 21 '12 at 3:12
Wes McKinneyW...
How to store arrays in MySQL?
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Bennik2000
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answered Jun 28 '13 at 18:55
Bad WolfBad Wolf
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Is there a math nCr function in python? [duplicate]
...1, r+1), 1)
return numer // denom # or / in Python 2
As of Python 3.8, binomial coefficients are available in the standard library as math.comb:
>>> from math import comb
>>> comb(10,3)
120
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基于Windows平台的反Rootkit原理与实现 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
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1.3 主要工作 ................................ ................................ ................................ ............ 2
第二章 WindowsWindows 应用层开发 应用层开发 ................................ ........
Creating NSData from NSString in Swift
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361
In Swift 3
let data = string.data(using: .utf8)
In Swift 2 (or if you already have a NSSt...
How to loop backwards in python? [duplicate]
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302
range() and xrange() take a third parameter that specifies a step. So you can do the following...
Difference between Big-O and Little-O Notation
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edited Dec 16 '17 at 18:37
Mohamed El-Nakib
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ans...
Which is better, number(x) or parseFloat(x)?
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318
The difference between parseFloat and Number
parseFloat/parseInt is for parsing a string, whi...