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@karpathy
karpathy / pg-pong.py
Created May 30, 2016 22:50
Training a Neural Network ATARI Pong agent with Policy Gradients from raw pixels
""" Trains an agent with (stochastic) Policy Gradients on Pong. Uses OpenAI Gym. """
import numpy as np
import cPickle as pickle
import gym
# hyperparameters
H = 200 # number of hidden layer neurons
batch_size = 10 # every how many episodes to do a param update?
learning_rate = 1e-4
gamma = 0.99 # discount factor for reward
@baraldilorenzo
baraldilorenzo / readme.md
Created January 16, 2016 12:57
VGG-19 pre-trained model for Keras

##VGG19 model for Keras

This is the Keras model of the 19-layer network used by the VGG team in the ILSVRC-2014 competition.

It has been obtained by directly converting the Caffe model provived by the authors.

Details about the network architecture can be found in the following arXiv paper:

Very Deep Convolutional Networks for Large-Scale Image Recognition

K. Simonyan, A. Zisserman

@rjzak
rjzak / PyUtils.cpp
Last active April 16, 2024 09:00
Convert between Python list/tuples and C++ vectors
#include <Python.h> // Must be first
#include <vector>
#include <stdexcept>
#include "PyUtils.h"
using namespace std;
// =====
// LISTS
// =====
@mblondel
mblondel / lda_gibbs.py
Last active October 9, 2023 11:31
Latent Dirichlet Allocation with Gibbs sampler
"""
(C) Mathieu Blondel - 2010
License: BSD 3 clause
Implementation of the collapsed Gibbs sampler for
Latent Dirichlet Allocation, as described in
Finding scientifc topics (Griffiths and Steyvers)
"""