This repository contains the implementation of the paper Instance-Level Meta Normalization presented at CVPR 2019.

The code is based on the PyTorch example for training ResNet on Imagenet and Train CIFAR10 with PyTorch.

0. Introduction
1. Requirements
2. Usage
3. Checkpoint
4. Citing

This paper presents a normalization mechanism called Instance-Level Meta Normalization (ILM-Norm) to address a learning-to-normalize problem. ILM-Norm learns to predict the normalization parameters via both the feature feed-forward and the gradient back-propagation paths. ILM-Norm provides a meta normalization mechanism and has several good properties. It can be easily plugged into existing instance-level normalization schemes such as Instance Normalization, Layer Normalization, or Group Normalization. ILM-Norm normalizes each instance individually and therefore maintains high performance even when small mini-batch is used. The experimental results show that ILM-Norm well adapts to different network architectures and tasks, and it consistently improves the performance of the original models.

This implementation is developed for

0. Python 3.6.5
1. PyTorch 1.0.1
2. CUDA 9.1

For compatibility to newer versions, please make a pull request.

There are two training files. One for CIFAR-10 and Cifar-100 train.py and the other for ImageNet imageNet.py.

The network can be simply trained with python train.py or with optional arguments for different hyperparameters:

python train.py --data [cifar-10/cifar-100 folder]

The network can be also simply infered with the following command:

python train.py --infer [checkpoint folder] --data [cifar-10/cifar-100 folder]

For ImageNet the folder containing the dataset needs to be supplied

python imageNet.py --data [imagenet folder]

You can also infer the network with the following command:

python imageNet.py --infer [checkpoint folder] --data [imagenet folder]

ilm+gn on imageNet: link

If you find this helps your research, please consider citing:

@conference{Jia2019,
title = {Instance-Level Meta Normalization},
author = {Songhao Jia and Ding-Jie Chen and Hwann-Tzong Chen},
year = {2019},
journal = {Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
}