Ladder network is a deep learning algorithm that combines supervised and unsupervised learning

This repository contains source code for the experiments in a paper titled Semi-Supervised Learning with Ladder Networks by A Rasmus, H Valpola, M Honkala, M Berglund, and T Raiko.

Required libraries

Install Theano, Blocks Stable 0.2, Fuel Stable 0.2

Refer to the Blocks installation instructions for details but use tag v0.2 instead. Something along:

pip install git+git://github.com/mila-udem/[email protected]
pip install git+git://github.com/mila-udem/[email protected]

Fuel comes with Blocks, but you need to download and convert the datasets. Refer to the Fuel documentation. One might need to rename the converted files.

fuel-download mnist
fuel-convert mnist --dtype float32
fuel-download cifar10
fuel-convert cifar10

Alternatively, one can use the environment.yml file that is provided in this repo to create an conda environment.

First install anaconda from https://www.continuum.io/downloads. Then,
conda env create -f environment.yml
source activate ladder
The environment should be good to go!

Models in the paper

The following commands train the models with seed 1. The reported numbers in the paper are averages over several random seeds. These commands use all the training samples for training (--unlabeled-samples 60000) and none are used for validation. This results in a lot of NaNs being printed during the trainining, since the validation statistics are not available. If you want to observe the validation error and costs during the training, use --unlabeled-samples 50000.

MNIST all labels

# Full
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 1000,1,0.01,0.01,0.01,0.01,0.01 --labeled-samples 60000 --unlabeled-samples 60000 --seed 1 -- mnist_all_full
# Bottom
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 2000,0,0,0,0,0,0 --labeled-samples 60000 --unlabeled-samples 60000 --seed 1 -- mnist_all_bottom
# Gamma model
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-gauss --denoising-cost-x 0,0,0,0,0,0,2 --labeled-samples 60000 --unlabeled-samples 60000 --seed 1 -- mnist_all_gamma
# Supervised baseline
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-0 --denoising-cost-x 0,0,0,0,0,0,0 --labeled-samples 60000 --unlabeled-samples 60000 --f-local-noise-std 0.5 --seed 1 -- mnist_all_baseline

MNIST 100 labels

# Full
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 1000,10,0.1,0.1,0.1,0.1,0.1 --labeled-samples 100 --unlabeled-samples 60000 --seed 1 -- mnist_100_full
# Bottom-only
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 5000,0,0,0,0,0,0 --labeled-samples 100 --unlabeled-samples 60000 --seed 1 -- mnist_100_bottom
# Gamma
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-gauss --denoising-cost-x 0,0,0,0,0,0,0.5 --labeled-samples 100 --unlabeled-samples 60000 --seed 1 -- mnist_100_gamma
# Supervised baseline
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-0 --denoising-cost-x 0,0,0,0,0,0,0 --labeled-samples 100 --unlabeled-samples 60000 --f-local-noise-std 0.5 --seed 1 -- mnist_100_baseline

MNIST 1000 labels

# Full
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 2000,20,0.1,0.1,0.1,0.1,0.1 --f-local-noise-std 0.2 --labeled-samples 1000 --unlabeled-samples 60000 --seed 1 -- mnist_1000_full
# Bottom-only
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 2000,0,0,0,0,0,0 --labeled-samples 1000 --unlabeled-samples 60000 --seed 1 -- mnist_1000_bottom
# Gamma model
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-gauss --denoising-cost-x 0,0,0,0,0,0,10 --labeled-samples 1000 --unlabeled-samples 60000 --seed 1 -- mnist_1000_gamma
# Supervised baseline
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec 0-0-0-0-0-0-0 --denoising-cost-x 0,0,0,0,0,0,0 --labeled-samples 1000 --unlabeled-samples 60000 --f-local-noise-std 0.5 --seed 1 -- mnist_1000_baseline

MNIST 50 labels

# Full model
run.py train --encoder-layers 1000-500-250-250-250-10 --decoder-spec gauss --denoising-cost-x 2000,20,0.1,0.1,0.1,0.1,0.1 --labeled-samples 50 --unlabeled-samples 60000 --seed 1 -- mnist_50_full

MNIST convolutional models

# Conv-FC
run.py train --encoder-layers convv:1000:26:1:1-convv:500:1:1:1-convv:250:1:1:1-convv:250:1:1:1-convv:250:1:1:1-convv:10:1:1:1-globalmeanpool:0 --decoder-spec gauss --denoising-cost-x 1000,10,0.1,0.1,0.1,0.1,0.1,0.1 --labeled-samples 100 --unlabeled-samples 60000 --seed 1 -- mnist_100_conv_fc
# Conv-Small, Gamma
run.py train --encoder-layers convf:32:5:1:1-maxpool:2:2-convv:64:3:1:1-convf:64:3:1:1-maxpool:2:2-convv:128:3:1:1-convv:10:1:1:1-globalmeanpool:6:6-fc:10 --decoder-spec 0-0-0-0-0-0-0-0-0-gauss --denoising-cost-x 0,0,0,0,0,0,0,0,0,1 --labeled-samples 100 --unlabeled-samples 60000 --seed 1  -- mnist_100_conv_gamma
# Conv-Small, supervised baseline. Overfits easily, so keep training short.
run.py train --encoder-layers convf:32:5:1:1-maxpool:2:2-convv:64:3:1:1-convf:64:3:1:1-maxpool:2:2-convv:128:3:1:1-convv:10:1:1:1-globalmeanpool:6:6-fc:10 --decoder-spec 0-0-0-0-0-0-0-0-0-0 --denoising-cost-x 0,0,0,0,0,0,0,0,0,0 --num-epochs 20 --lrate-decay 0.5 --f-local-noise-std 0.45 --labeled-samples 100 --unlabeled-samples 60000 --seed 1 -- mnist_100_conv_baseline

CIFAR models

# Conv-Large, Gamma
./run.py train --encoder-layers convv:96:3:1:1-convf:96:3:1:1-convf:96:3:1:1-maxpool:2:2-convv:192:3:1:1-convf:192:3:1:1-convv:192:3:1:1-maxpool:2:2-convv:192:3:1:1-convv:192:1:1:1-convv:10:1:1:1-globalmeanpool:0 --decoder-spec 0-0-0-0-0-0-0-0-0-0-0-0-gauss --dataset cifar10 --act leakyrelu --denoising-cost-x 0,0,0,0,0,0,0,0,0,0,0,0,4.0 --num-epochs 70 --lrate-decay 0.86 --seed 1 --whiten-zca 3072 --contrast-norm 55 --top-c False --labeled-samples 4000 --unlabeled-samples 50000 -- cifar_4k_gamma
# Conv-Large, supervised baseline. Overfits easily, so keep training short.
./run.py train --encoder-layers convv:96:3:1:1-convf:96:3:1:1-convf:96:3:1:1-maxpool:2:2-convv:192:3:1:1-convf:192:3:1:1-convv:192:3:1:1-maxpool:2:2-convv:192:3:1:1-convv:192:1:1:1-convv:10:1:1:1-globalmeanpool:0 --decoder-spec 0-0-0-0-0-0-0-0-0-0-0-0-0 --dataset cifar10 --act leakyrelu --denoising-cost-x 0,0,0,0,0,0,0,0,0,0,0,0,0 --num-epochs 20 --lrate-decay 0.5 --seed 1 --whiten-zca 3072 --contrast-norm 55 --top-c False --labeled-samples 4000 --unlabeled-samples 50000 -- cifar_4k_baseline

Evaluating models with testset

After training a model, you can infer the results on a test set by performing the evaluate command. An example use after training a model:

./run.py evaluate results/mnist_all_bottom0

Ladder network is a deep learning algorithm that combines supervised and unsupervised learning

Related tags

Overview

Required libraries

Install Theano, Blocks Stable 0.2, Fuel Stable 0.2

Alternatively, one can use the environment.yml file that is provided in this repo to create an conda environment.

Models in the paper

MNIST all labels

MNIST 100 labels

MNIST 1000 labels

MNIST 50 labels

MNIST convolutional models

CIFAR models

Evaluating models with testset

Owner

Curious AI

Flappy Bird clone in Python using Pyglet

To be easier to create backup files for the game StoneShard

Python game engine for 2D multiplayer online games.

SuperChess is a GUI application for playing chess.

source codes for my(small indie game developer) games

A Pygame application which generates mazes using randomized DFS (Depth-First-Search)

Finding a method to objectively quantify skill expression in games, using reinforcement learning

My first Minecraft CPU. Created in collaboration with Peer Carnes as a final project in CS 281: Architecture and Assembly at the University of Puget Sound

linorobot2 is a ROS2 port of the linorobot package

Use different orders of N-gram model to play Hangman game.

An easy to use game engine/framework for python.

Adventure-Game - Adventure Game which is created using Python

Un semplice Snake game , come negli anni 90!

Simple Game created using Python & PyGame, as my Beginner Python Project!

An open source Python library for the Snake retro game.

Quiz game made entirely with python and pygame for school work

An open-world game made in Python.

A popular children's game developed in Python.

Racers-API - a game where you have to go around racing with your car, earning money

WORDLE Helper and Solver