大约有 10,160 项符合查询结果(耗时:0.0166秒) [XML]

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What is the difference between supervised learning and unsupervised learning? [closed]

In terms of artificial intelligence and machine learning, what is the difference between supervised and unsupervised learning? Can you provide a basic, easy explanation with an example? ...
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How to convert List to List?

My question is part of this problem: 14 Answers 14 ...
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What is the equivalent of MATLAB's repmat in NumPy

I would like to execute the equivalent of the following MATLAB code using NumPy: repmat([1; 1], [1 1 1]) . How would I accomplish this? ...
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How to calculate time elapsed in bash script?

I print the start and end time using date +"%T" , which results in something like: 20 Answers ...
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How to checkout in Git by date?

I am working on a regression in the source code. I'd like to tell Git: "checkout the source based on a parameterized date/time". Is this possible? ...
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Hashset vs Treeset

I've always loved trees, that nice O(n*log(n)) and the tidiness of them. However, every software engineer I've ever known has asked me pointedly why I would use a TreeSet . From a CS background, I don't think it matters all that much which you use, and I don't care to mess around with hash functi...
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Ruby: How to post a file via HTTP as multipart/form-data?

I want to do an HTTP POST that looks like an HMTL form posted from a browser. Specifically, post some text fields and a file field. ...
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How to strip all non-alphabetic characters from string in SQL Server?

How could you remove all characters that are not alphabetic from a string? 18 Answers ...
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Count number of occurrences of a pattern in a file (even on same line)

When searching for number of occurrences of a string in a file, I generally use: 5 Answers ...
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How do you see the entire command history in interactive Python?

I'm working on the default python interpreter on Mac OS X, and I Cmd + K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history option in bash shell, which shows you all the commands you've entered so far? ...