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Questions tagged [pybrain]

PyBrain is an open source machine-learning library for python. It supports a wide range of optimisation techniques, neural networks, reinforcement learning and more.

PyBrain is a machine learning library that can be used by entry-level students but offers the flexibility and algorithms for state-of-the-art research.

For more information, see the PyBrain homepage

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matplotlib fails with dateutil

I believe I installed matplotlib correctly with 2.7: $ pip install matplotlib Requirement already satisfied (use --upgrade to upgrade): matplotlib in /usr/local/lib/python2.7/site-packages Requirement already satisfied (use --upgrade to upgrade):…
Tjorriemorrie
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What is this message when installing Pybrain

I checked out the latest version of Pybrain from github Running sudo python setup.py install on my mac gives me: Extracting PyBrain-0.3.1-py2.7.egg to /Library/Python/2.7/site-packages File…
Tjorriemorrie
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How many units does the hidden layer have?

I'm getting started in artificial neural networks programming. I would like to know if there is some sort of calculation to determine the exact number of units a hidden layer in a feedforward multilayer network should have according to the number of…
renatov
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autoassociative neural network Python

I was trying to build an auto-associative artificial neural network with python. I have tried to use the library pybrain. Here my code from pybrain.tools.shortcuts import buildNetwork from pybrain.datasets import SupervisedDataSet from…
Gioelelm
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Pybrain error: function buildNetwork() is not defined

I'm using Python 2.7.5 and PyBrain 0.3 (installed via pip). I can't reproduce the "quickstart" code there is in PyBrain documentation pages because the function buildNetwork() seems to not be defined and it triggers a NameError. Here is the…
renatov
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How to restrict PyBrain output module domain?

Working on a project to do some prediction with PyBrain, however I want to know how I can restrict the domain of the NN's output in an easy way so that output layer only produces values in domain [0..1]. Currently, I get negatives values in some…
ptpatil
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Train a feed forward neural network indirectly

I am faced with this problem: I have to build an FFNN that has to approximate an unknown function f:R^2 -> R^2. The data in my possession to check the net is a one-dimensional R vector. I know the function g:R^2->R that will map the output of the…
emanuele
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Pybrain basic network organization questions

I've started building some networks in Pybrain and having a lot of fun. I'm not entirely thrilled with the docs so I've built small, simple nets and played with them to discern how the class structure and data flow works. I have a few…
user3010804
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how to use pybrain weights to predict

I want to know how does pybrain give the predicition according the weight. For example, I have specified network=buildNetwork(traindata.indim, 4, traindata.outdim, hiddenclass = TanhLayer, outclass= TanhLayer). Suppose I know the…
Peter_Zong
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PyBrain library in parallel achitecture

Is there someone who knows if pybrain works in parallel architecture? If it doesn't, which library is avaliable to work with Artificial Neural Network in multi-core processor? Thanks a lot!
David Evangelista
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multi-label classification in python

I am beginning to use Pybrain which good neural networks algorithms. If anybody is familiar with it already, is the package capable of doing multi-label classification as well? Multi-label is different from multi-class classification because an…
ayush singhal
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How can I install pybrain on Mac OS X Mountain Lion?

How can I install pybrain on Mac OS X Mountain Lion? I've already installed Python.
user2585578
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don't print results of a function

I am using python and pybrain for Neural Networks. Unfortunately, my sample is realy big and when the program print the errors on the training, my memory get full before the programm completed. Is there anyway to not print the errors from the…
Tasos
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Pybrain outclass=sigmoid

I'm building Noyron network using pybrain but I want to change the outclass to Sigmoid instead of Linear Layer as it is. This is the network I created: net=buildNetwork(108,100,1) This what I intend to do (but isn't…
user2129468
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Disable certain output nodes in PyBrain

I'm creating a simple feed-forward neural network in PyBrain to classify characters (26 lower case, 26 upper case and 10 numbers) There are two different documents - one has only upper case letters and numbers and the second has lower case letters,…
user2118322
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