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cocktail party algorithm SVD implementation … in one line of code?

In a slide within the introductory lecture on machine learning by Stanford's Andrew Ng at Coursera, he gives the following one line Octave solution to the cocktail party problem given the audio sources are recorded by two spatially separated microphones: ...
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ruby convert array into function arguments

Say I have an array. I wish to pass the array to a function. The function, however, expects two arguments. Is there a way to on the fly convert the array into 2 arguments? For example: ...
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How can you get the SSH return code using Paramiko?

Is there any way to get the command return code? 4 Answers 4 ...
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Using Transactions or SaveChanges(false) and AcceptAllChanges()?

I have been investigating transactions and it appears that they take care of themselves in EF as long as I pass false to SaveChanges() and then call AcceptAllChanges() if there are no errors: ...
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Xcode can only refactor C and Objective-C code. How to rename swift class name in Xcode 6?

I have created a new Single View Application Project in Xcode 6 beta version. I want to rename swift class from ViewController.swift to some other name. But when I select Refactor -> Rename, it gives error Xcode can only refactor C and Objective-C code . ...
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The Ruby %r{ } expression

In a model there is a field 5 Answers 5 ...
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The selected run destination is not valid for this action

I have opened a project that has always been iphone/ipad. I can't build it now because for some reason my only "Scheme" option is "MyApp My Mac 64-bit". How can I get this set back to iphone/ipad simulator and devices? My "Targeted Device Family" setting is iPhone/iPad. ...
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Connecting to Azure website via FTP

What login credentials do I use to connect to the FTP site that is listed on the dashboard of my Azure? I tried using the same credentials I use to log into Azure but this is failing. TIA. ...
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Override browser form-filling and input highlighting with HTML/CSS

I have 2 basic forms -- sign in and sign up, both on the same page. Now, I have no problem with the sign in form auto-filling, but the sign up form auto fills as well, and I don't like it. ...
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Display image as grayscale using matplotlib

I'm trying to display a grayscale image using matplotlib.pyplot.imshow() . My problem is that the grayscale image is displayed as a colormap. I need the grayscale because I want to draw on top of the image with color. ...