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Why do we have to normalize the input for an artificial neural network?

...n MLP [multilayer perceptron], then it is rarely strictly necessary to standardize the inputs, at least in theory. The reason is that any rescaling of an input vector can be effectively undone by changing the corresponding weights and biases, leaving you with the exact same outputs as you ha...
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How to send a simple string between two programs using pipes?

...r pipe can only connect two related processes. It is created by a process and will vanish when the last process closes it. A named pipe, also called a FIFO for its behavior, can be used to connect two unrelated processes and exists independently of the processes; meaning it can exist even if no one...
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Downloading a picture via urllib and python

So I'm trying to make a Python script that downloads webcomics and puts them in a folder on my desktop. I've found a few similar programs on here that do something similar, but nothing quite like what I need. The one that I found most similar is right here ( http://bytes.com/topic/python/answers/8...
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Reading value from console, interactively

...p server with some console extension. I found the snippet to read from command line data. 15 Answers ...
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Default profile in Spring 3.1

In my application I have beans annotated with @Profile("prod") and @Profile("demo") . The first one, as you can guess :), is used on beans that connect to production DB and second one annotates beans that use some fake DB ( HashMap or whatever)- to make development faster. ...
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git undo all uncommitted or unsaved changes

...rying to undo all changes since my last commit. I tried git reset --hard and git reset --hard HEAD after viewing this post . I responds with head is now at 18c3773... but when I look at my local source all the files are still there. What am I missing? ...
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Direct vs. Delegated - jQuery .on()

I am trying to understand this particular difference between the direct and delegated event handlers using the jQuery .on() method . Specifically, the last sentence in this paragraph: ...
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How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]

I have a = [1,2,3,4] and I want d = {1:0, 2:0, 3:0, 4:0} 5 Answers 5 ...
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Will code in a Finally statement fire if I return a value in a Try block?

I'm reviewing some code for a friend and say that he was using a return statement inside of a try-finally block. Does the code in the Finally section still fire even though the rest of the try block doesn't? ...
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What is the difference between the WPF TextBlock element and Label control? [duplicate]

...he downside of using a textblock is no support for Access/Accerelator Keys and there is no link to other controls as target. When you want to display text by itself use the TextBlock. The benefit is a light, performant way to display text. When you want to associate text with another control like ...