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Specifying rails version to use when creating a new application

I have two versions of rails (2.1.0 and 2.2.2) installed in my computer. 7 Answers 7 ...
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How are feature_importances in RandomForestClassifier determined?

I have a classification task with a time-series as the data input, where each attribute (n=23) represents a specific point in time. Besides the absolute classification result I would like to find out, which attributes/dates contribute to the result to what extent. Therefore I am just using the feat...
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Naming returned columns in Pandas aggregate function? [duplicate]

I'm having trouble with Pandas' groupby functionality. I've read the documentation , but I can't see to figure out how to apply aggregate functions to multiple columns and have custom names for those columns. ...
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The name 'model' does not exist in current context in MVC3

I added a cshtml page in an project. When I tried to add the following declaration to it, I get an error: "The name 'model' does not exist in current context". ...
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What is the difference between exit(0) and exit(1) in C?

Can anyone tell me? What is the difference between exit(0) and exit(1) in C language? 11 Answers ...
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What does (x ^ 0x1) != 0 mean?

I came across the following code snippet 17 Answers 17 ...
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How to catch integer(0)?

Let's say we have a statement that produces integer(0) , e.g. 6 Answers 6 ...
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Check substring exists in a string in C

I'm trying to check whether a string contains a substring in C like: 12 Answers 12 ...
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How can I obtain the element-wise logical NOT of a pandas Series?

I have a pandas Series object containing boolean values. How can I get a series containing the logical NOT of each value? ...
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Git Tag list, display commit sha1 hashes

so the git tag command lists the current git tags 8 Answers 8 ...