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Re:A friendly Introduction to Backpropagation in Python by partycoder on Sunday November 26, 2017 @08:38PM (#15784203)
Some suggestions:

1) I would make a better distinction between the function declaration and the program output. e.g: format the output differently. like gray.

2) Capitalization. "InvalidWRTargError". It would help if you could capitalize it as "InvalidWrtArgError". This is a guideline in most coding standards. https://en.wikipedia.org/wiki/Camel_case#In_abbreviations

3) Better naming:

- "getNumericalForwardGradient": Are there non-numerical gradients?

- "applyGradientOnce": A function is applied once per invocation by convention.

Then it would be good if you formatted using PEP8, as it is standard in Python.

Re:A friendly Introduction to Backpropagation in Python by sushantc on Sunday November 26, 2017 @09:32PM (#15784410)
Thanks partycoder! Points taken; will make some changes.

Regarding numerical gradients, named it so to differentiate it from analytical gradients, which leverage formulas from calculus. The "numerical" ones are calculated using (f(x+h)-f(x))/h every time.

Re:A friendly Introduction to Backpropagation in Python by ydidntithnkftht on Sunday November 26, 2017 @10:39PM (#15784630)
Python community conventions are not camel case for functions...

forwardAddGate

would be

forward_add_gate

and return is not a function call...

return(max(x,y)) or return(x+y)

would be

return max(x, y) or return x + y

spaces around operators...

x + y not x+y

spaces around function args...

def foo(a, b) not def foo(a,b)

and when calling...

foo(1, 2) not foo(1,2)

https://www.python.org/dev/peps/pep-0008/

Just things to think about when publishing python code for the greater community.

Re:A friendly Introduction to Backpropagation in Python by partycoder on Monday November 27, 2017 @01:59AM (#15785388)
There's a package that verifies PEP8 for you. https://pypi.python.org/pypi/pep8
Re:A friendly Introduction to Backpropagation in Python by partycoder on Sunday November 26, 2017 @11:01PM (#15784718)
I see the difference now, thanks for the clarification.