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To the author : What else do I need to know besides basic python and algebra? Since I am not a python programmer, can I translate the theories into other langua

To the author : What else do I need to know besides basic python and algebra? Since I am not a python programmer, can I translate the theories into other languages easily?

williamtrask 10y ago
Hmm, you certainly can, but many of the intuitions come from reading little bits of python code. It's intuitive but I'd recommend doing a python tutorial first.
- flukus 10y ago
  In a similar vein, is it using python specific libraries or would the examples be easily portable to other languages?
  - ylk 10y ago
    Not the author, but in the blog post he says he's using [numpy](http://www.numpy.org/ http://www.numpy.org/). With google you might find similar libraries for the language you want to use, with a quick search I just found a quora post with a few similar libraries listed for C++.
    - ausjke 10y ago
      what are those libraries? Thanks.
oelmekki 10y ago
I've been learning about neural networks lately and implemented mines in golang. The biggest problem I had was that python is not chosen randomly: neural networks scientists use it because of numpy. Most importantly, numpy makes it really easy to deal with matrices (~ array of arrays). You just make operations on them as if they were classic numbers (so, you can do `a + b`, where both a and b are matrices). While translating it into other languages not having numpy is indeed possible, expect a bit of intellectual gymnastic. I don't know which language you targeted, but for those who wish to use golang, I made this matrix library: https://github.com/oelmekki/matrix https://github.com/oelmekki/matrix EDIT: oh, btw. I'm initially a ruby dev. I've learnt python just enough to be able to understand NNs code, that was easy (took me an afternoon). I won't pretend this makes me a python developer, but learning just enough to translate code in an other langage is straightforward.
- iamcreasy 10y ago
  I plan to use Java since that's what I am mostly familiar with. I googled a bit and I think there are couple[1] of Java libraries to handle n dimensional array. Lets hope it will work out. [1] http://nd4j.org/ http://nd4j.org/
  - oelmekki 10y ago
    It seems like nd4j has everything you need. Just remember, when seeing calls to the `np.dot()` function in python's numpy that it is the "dot product" operation on matrix, which is also known as standard mathematical matrix multiplication, which in turn nd4j is calling `mmul` ("matrix multiplication", in "Linear Algebra Operations" section). When numpy is using the * operator between two matrices, it basically just does a cell by cell multiplication ie: result_matrix[x][y] = matrix1[x][y] * matrix2[x][y]

To the author : What else do I need to know besides basic python and algebra? Since I am not a python programmer, can I translate the theories into other languages easily?

williamtrask 10y ago

Hmm, you certainly can, but many of the intuitions come from reading little bits of python code. It's intuitive but I'd recommend doing a python tutorial first.

flukus 10y ago
In a similar vein, is it using python specific libraries or would the examples be easily portable to other languages?
- ylk 10y ago
  Not the author, but in the blog post he says he's using [numpy](http://www.numpy.org/ http://www.numpy.org/). With google you might find similar libraries for the language you want to use, with a quick search I just found a quora post with a few similar libraries listed for C++.
  - ausjke 10y ago
    what are those libraries? Thanks.

oelmekki 10y ago

I've been learning about neural networks lately and implemented mines in golang. The biggest problem I had was that python is not chosen randomly: neural networks scientists use it because of numpy. Most importantly, numpy makes it really easy to deal with matrices (~ array of arrays). You just make operations on them as if they were classic numbers (so, you can do `a + b`, where both a and b are matrices). While translating it into other languages not having numpy is indeed possible, expect a bit of intellectual gymnastic. I don't know which language you targeted, but for those who wish to use golang, I made this matrix library: https://github.com/oelmekki/matrix https://github.com/oelmekki/matrix EDIT: oh, btw. I'm initially a ruby dev. I've learnt python just enough to be able to understand NNs code, that was easy (took me an afternoon). I won't pretend this makes me a python developer, but learning just enough to translate code in an other langage is straightforward.

iamcreasy 10y ago
I plan to use Java since that's what I am mostly familiar with. I googled a bit and I think there are couple[1] of Java libraries to handle n dimensional array. Lets hope it will work out. [1] http://nd4j.org/ http://nd4j.org/
- oelmekki 10y ago
  It seems like nd4j has everything you need. Just remember, when seeing calls to the `np.dot()` function in python's numpy that it is the "dot product" operation on matrix, which is also known as standard mathematical matrix multiplication, which in turn nd4j is calling `mmul` ("matrix multiplication", in "Linear Algebra Operations" section). When numpy is using the * operator between two matrices, it basically just does a cell by cell multiplication ie: result_matrix[x][y] = matrix1[x][y] * matrix2[x][y]