大约有 40,000 项符合查询结果(耗时:0.0391秒) [XML]

https://stackoverflow.com/ques... 

Is it possible to specify your own distance function using scikit-learn K-Means Clustering?

...various cluster validity metrics, I came across Dunn's Index, Elbow method etc. wasn't really sure which one to utilize so thought I will start off with the Elbow method. – Legend Jul 11 '11 at 17:24 ...
https://stackoverflow.com/ques... 

A python class that acts like dict

..., has a _dict__ which contains all the object attributes (methods, fields, etc). You do not want to mess around with this unless you want to write code that is modifying itself... – Raik Feb 8 '19 at 12:49 ...
https://stackoverflow.com/ques... 

Activate a virtualenv via fabric as deploy user

...amp;& ' run(workon + 'git pull') run(workon + 'do other stuff, etc') Since version 1.0, Fabric has a prefix context manager which uses this technique so you can for example: def task(): with prefix('workon myvenv'): run('git pull') run('do other stuff, etc') * ...
https://stackoverflow.com/ques... 

What is the definition of “interface” in object oriented programming

...s (e.g., cable programming) and has outputs (display on the screen, sound, etc.). However, when you look at a TV that is not plugged in, you are projecting your expected semantics into an interface. For all you know, the TV could just explode when you plug it in. However, based on its "interface" yo...
https://stackoverflow.com/ques... 

What's the $unwind operator in MongoDB?

...NoSQL" approach to data storage, so perish the thoughts of selects, joins, etc. from your mind. The way that it stores your data is in the form of documents and collections, which allows for a dynamic means of adding and obtaining the data from your storage locations. That being said, in order to u...
https://stackoverflow.com/ques... 

What is a Python equivalent of PHP's var_dump()? [duplicate]

... What about pprint() on enumerate objects, permutations, etc.? – JSmyth Nov 23 '14 at 16:33 4 ...
https://stackoverflow.com/ques... 

How to find the Windows version from the PowerShell command line

...o Windows 10. Windows 10 has versions of its own: 1507, 1511, 1607, 1703, etc. This is what winver shows. Powershell: (Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion").ReleaseId Command prompt (CMD.EXE): Reg Query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v Releas...
https://www.tsingfun.com/ilife/tech/756.html 

一年手机淘汰上亿部 回收涌进一批“互联网+” - 资讯 - 清泛网 - 专注C/C++...

...亿部 回收涌进一批“互联网+”一提起手机回收,多数人印象里总是一个小伙子蹲在路边,面前支起一个手写小牌子,旁边摆着十几部二手手机,逢人就问:卖手机吗?现如今...一提起手机回收,多数人印象里总是一个小...
https://www.tsingfun.com/it/da... 

灾难恢复RTO 与 RPO - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...于停业状态;二是网络多长时间能够恢复;三是业务层面恢复。整个恢复过程中,最关键衡量指标有两个:一个是 RTO,另一个是 RPO。 所谓 RTO,Recovery Time Objective,它是指灾难发生后,从 IT 系统当机导致业务停顿之时开...
https://www.tsingfun.com/it/tech/1050.html 

记一次LVS/Nginx环境下访问控制 - 更多技术 - 清泛网 - 专注C/C++及内核技术

记一次LVS/Nginx环境下访问控制偶然间,我发现Graphite显示服务器网卡流量呈锯齿状,于是查了一下 Nginx 日志,发现有人在周期性抓我们接口数据。我这爆脾气自然不能...偶然间,我发现 Graphite 显示服务器网卡流量呈锯齿状...