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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]

I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used? ...
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How to hide image broken Icon using only CSS/HTML?

...gic to multiple images at once by doing something like this: document.addEventListener("DOMContentLoaded", function(event) { document.querySelectorAll('img').forEach(function(img){ img.onerror = function(){this.style.display='none';}; }) }); <img src="error.src"> <img sr...
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How to change the color of an svg element?

... You can't change the color of an image that way. If you load SVG as an image, you can't change how it is displayed using CSS or Javascript in the browser. If you want to change your SVG image, you have to load it using <object>, <iframe> or using <svg> inline. If...
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Getting and removing the first character of a string

... Richie CottonRichie Cotton 103k3737 gold badges217217 silver badges338338 bronze badges add a comment ...
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setNeedsLayout vs. setNeedsUpdateConstraints and layoutIfNeeded vs updateConstraintsIfNeeded

...nts using setNeedsUpdateConstraints is pretty rare too, objc.io–a must read about autolayouts–says: If something changes later on that invalidates one of your constraints, you should remove the constraint immediately and call setNeedsUpdateConstraints. In fact, that’s the only case where y...
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How do I create a constant in Python?

... Georgy 4,77655 gold badges3838 silver badges4646 bronze badges answered Apr 21 '10 at 12:21 Felix KlingFelix Kling ...
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MIME type warning in chrome for png images

... Development Server to IIS on my local machine. I can see that PNG was already defined correctly as an image MIME type and indeed when I hit my local IIS server it's serving up the file with the correct type. share ...
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Why would a post-build step (xcopy) occasionally exit with code 2 in a TeamCity build?

... Sometimes the above can be resolved by simply using a copy command instead of xcopy: copy /y ... However, if there are non-existent directories leading up to the final file destination, then an "exited with code 1" will occur. Remember: use the /C switch and xcopy with caution. ...
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If I fork someone else's private Github repo into my account, is it going to appear in my account as

...rivate. Private collaborators may fork any private repository you’ve added them to without their own paid plan. Their forks do not count against your private repository quota. https://github.com/plans share ...
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C# vs Java Enum (for those new to C#)

... C# I would just change the enum to an immutable class and expose static readonly instances of that class: using System; using System.Collections.Generic; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Planet planetEarth = Plan...