Educational python for Neural Networks, written in pure Python/NumPy.

Related tags

Machine Learningpythoneducationdeep-learning
Overview

EpyNN

EpyNN is written in pure Python/NumPy.

If you use EpyNN in academia, please cite:

Malard F., Danner L., Rouzies E., Meyer J. G., Lescop E., Olivier-Van Stichelen S. EpyNN: Educational python for Neural Networks, 2021, Submitted.

Documentation

Please visit https://epynn.net/ for extensive documentation.

Purpose

EpyNN is intended for teachers, students, scientists, or more generally anyone with minimal skills in Python programming who wish to understand and build from basic implementations of Neural Network architectures.

Although EpyNN can be used for production, it is meant to be a library of homogeneous architecture templates and practical examples which is expected to save an important amount of time for people who wish to learn, teach or develop from scratch.

Content

EpyNN features scalable, minimalistic and homogeneous implementations of major Neural Network architectures in pure Python/Numpy including:

Model and function rules and definition:

While not enhancing, extending or replacing EpyNN's documentation, series of live examples in Python and Jupyter notebook formats are offered online and within the archive, including:

Reliability

EpyNN has been cross-validated against TensorFlow/Keras API and provides identical results for identical configurations in the limit of float64 precision.

Please see Is EpyNN reliable? for details and executable codes.

Recommended install

  • Linux/MacOS
# Use bash shell
bash

# Clone git repository
git clone https://github.com/Synthaze/EpyNN

# Alternatively, not recommended
# pip3 install EpyNN
# epynn

# Change directory to EpyNN
cd EpyNN

# Install EpyNN dependencies
pip3 install -r requirements.txt

# Export EpyNN path in $PYTHONPATH for current session
export PYTHONPATH=$PYTHONPATH:$PWD

Linux: Permanent export of EpyNN directory path in $PYTHONPATH.

> ~/.bashrc # Source .bashrc to refresh $PYTHONPATH source ~/.bashrc "> 
# Append export instruction to the end of .bashrc file
echo "export PYTHONPATH=$PYTHONPATH:$PWD" >> ~/.bashrc

# Source .bashrc to refresh $PYTHONPATH
source ~/.bashrc

MacOS: Permanent export of EpyNN directory path in $PYTHONPATH.

> ~/.bash_profile # Source .bash_profile to refresh $PYTHONPATH source ~/.bash_profile "> 
# Append export instruction to the end of .bash_profile file
echo "export PYTHONPATH=$PYTHONPATH:$PWD" >> ~/.bash_profile

# Source .bash_profile to refresh $PYTHONPATH
source ~/.bash_profile
  • Windows
# Clone git repository
git clone https://github.com/Synthaze/EpyNN

# Alternatively, not recommended
# pip3 install EpyNN
# epynn

# Change directory to EpyNN
chdir EpyNN

# Install EpyNN dependencies
pip3 install -r requirements.txt

# Show full path of EpyNN directory
echo %cd%

Copy the full path of EpyNN directory, then go to: Control Panel > System > Advanced > Environment variable

If you already have PYTHONPATH in the User variables section, select it and click Edit, otherwise click New to add it.

Paste the full path of EpyNN directory in the input field, keep in mind that paths in PYTHONPATH should be comma-separated.

ANSI coloring schemes do work on native Windows10 and later. For prior Windows versions, users should configure their environment to work with ANSI coloring schemes for optimal experience.

Current release

1.0 - Initial release

  • nnlibs contains API sources.
  • nnlive contains live examples in Python and Jupyter notebook formats.
  • https://epynn.net/ contains extensive documentation.

See CHANGELOG.md for past releases.

Project tree

nnlibs

nnlive

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Comments
  • update train for images

    update train for images

    better to pick first label of each class programmatically otherwise it can change when then set of images changes. In my nb the indexes you had hardcoded were both class 0

    opened by jgmeyerucsd 1
Releases(v1.2)
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