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What is “entropy and information gain”?
I am reading this book ( NLTK ) and it is confusing. Entropy is defined as :
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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
记一次MongoDB性能问题最近忙着把一个项目从MySQL迁移到MongoDB，在导入旧数据的过程中，遇到了些许波折，犯了不少错误，但同时也学到了不少知识，遂记录下来。公...最近忙着把一个项目从MySQL迁移到MongoDB，在导入旧数据的过...
Learning about LINQ [closed]
One of the things I've asked a lot about on this site is LINQ . The questions I've asked have been wide and varied and often don't have much context behind them. So in an attempt to consolidate the knowledge I've acquired on Linq I'm posting this question with a view to maintaining and updating it ...
Open new Terminal Tab from command line (Mac OS X)
Is it possible to open a new tab in Mac OS X's terminal from the command line in a currently opened tab?
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How can I access and process nested objects, arrays or JSON?
...and arrays. How can I extract the information, i.e. access a specific or multiple values (or keys)?
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Possible to do a MySQL foreign key to one of two possible tables?
...e's my problem I have three tables; regions, countries, states. Countries can be inside of regions, states can be inside of regions. Regions are the top of the food chain.
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How to force JS to do math instead of putting two strings together
I need javascript to add 5 to an integer variable, but instead it treats the variable as a string, so it write out the variable, then add 5 onto the end of the "string". How can I force it to do math instead?
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How do I use a compound drawable instead of a LinearLayout that contains an ImageView and a TextView
Ran the new Lint tool against my code. It came up with a lot of good suggestions, but this one I cannot understand.
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How to convert unix timestamp to calendar date moment.js
I have a unix timestamp, and I'm trying to convert it into a calendar date such as MM/DD/YYYY .
So far, I have this:
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