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Difference between classification and clustering in data mining? [closed]
Can someone explain what the difference is between classification and clustering in data mining?
21 Answers
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How to get the size of a string in Python?
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@cryanbhu I don't know why the OP wanted the size and that would affect the answer, but probably most useful would be len(s.encode('utf8')) or whatever other encoding is going to be used when writing to the file. Also, if they also want a terminating null then they'll need t...
Should struct definitions go in .h or .c file?
I've seen both full definitions of struct s in headers and just declarations—is there any advantage to one method over the other?
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How can I String.Format a TimeSpan object with a custom format in .NET?
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Please note: this answer is for .Net 4.0 and above. If you want to format a TimeSpan in .Net 3.5 or below please see JohannesH's answer.
Custom TimeSpan format strings were introduced in .Net 4.0. You can find a full reference of available format specifiers at th...
Symbol for any number of any characters in regex?
...n (any whitespace or any non-whitespace) as many times as possible down to and including 0.
[\s\S]*
This expression will match as few as possible, but as many as necessary for the rest of the expression.
[\s\S]*?
For example, in this regex [\s\S]*?B will match aB in aBaaaaB. But in this regex...
The program can't start because libgcc_s_dw2-1.dll is missing
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[GNU gcc link options]
The latter discussion includes -static-libgcc and -static-libstdc++ linker options.
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Install an apk file from command prompt?
I want to install a file using the Windows command line. First I want to build after compiling all the .jar files to create an .apk file for an Android application without using Eclipse.
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“Cloning” row or column vectors
... into a 2D array with length 1 in the first axis (vertical on your screen) and length 3 in the second axis (horizontal on your screen). Transposing then makes it have length 3 in the first axis and length 1 in the second axis. A tile shape of (1, 3) copies this column over three times, which is why ...
A method to reverse effect of java String.split()? [duplicate]
...d mark this as the answer to your question. Earn some points for yourself and for @john-topley.
– L S
Jun 7 '12 at 21:10
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What is dynamic programming? [closed]
...be a very long process, but what if I give you the results for n=1,000,000 and n=1,000,001? Suddenly the problem just became more manageable.
Dynamic programming is used a lot in string problems, such as the string edit problem. You solve a subset(s) of the problem and then use that information to ...