[NeurIPS'20] Self-supervised Co-Training for Video Representation Learning. Tengda Han, Weidi Xie, Andrew Zisserman.

Last update: Jan 02, 2023

Related tags

Deep Learning CoCLR

Overview

CoCLR: Self-supervised Co-Training for Video Representation Learning

This repository contains the implementation of:

InfoNCE (MoCo on videos)
UberNCE (supervised contrastive learning on videos)
CoCLR

Link:

[Project Page] [PDF] [Arxiv]

News

[2021.01.29] Upload both RGB and optical flow dataset for UCF101 (links).
[2021.01.11] Update our paper for NeurIPS2020 final version: corrected InfoNCE-RGB-linearProbe baseline result in Table1 from 52.3% (pretrained for 800 epochs, unnessary and unfair) to 46.8% (pretrained for 500 epochs, fair comparison). Thanks @liuhualin333 for pointing out.
[2020.12.08] Update instructions.
[2020.11.17] Upload pretrained weights for UCF101 experiments.
[2020.10.30] Update "draft" dataloader files, CoCLR code, evaluation code as requested by some researchers. Will check and add detailed instructions later.

Pretrain Instruction

InfoNCE pretrain on UCF101-RGB

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_nce.py --net s3d --model infonce --moco-k 2048 \
--dataset ucf101-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 300 --schedule 250 280 -j 16

InfoNCE pretrain on UCF101-Flow

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_nce.py --net s3d --model infonce --moco-k 2048 \
--dataset ucf101-f-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 300 --schedule 250 280 -j 16

CoCLR pretrain on UCF101 for one cycle

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_coclr.py --net s3d --topk 5 --moco-k 2048 \
--dataset ucf101-2stream-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 100 --schedule 80 --name_prefix Cycle1-FlowMining_ -j 8 \
--pretrain {rgb_infoNCE_checkpoint.pth.tar} {flow_infoNCE_checkpoint.pth.tar}

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_coclr.py --net s3d --topk 5 --moco-k 2048 --reverse \
--dataset ucf101-2stream-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 100 --schedule 80 --name_prefix Cycle1-RGBMining_ -j 8 \
--pretrain {flow_infoNCE_checkpoint.pth.tar} {rgb_cycle1_checkpoint.pth.tar}

InfoNCE pretrain on K400-RGB

CUDA_VISIBLE_DEVICES=0,1,2,3 python -m torch.distributed.launch \
--nproc_per_node=4 main_infonce.py --net s3d --model infonce --moco-k 16384 \
--dataset k400-2clip --lr 1e-3 --seq_len 32 --ds 1 --batch_size 32 \
--epochs 300 --schedule 250 280 -j 16

InfoNCE pretrain on K400-Flow

CUDA_VISIBLE_DEVICES=0,1,2,3 python -m torch.distributed.launch \
--nproc_per_node=4 teco_fb_main.py --net s3d --model infonce --moco-k 16384 \
--dataset k400-f-2clip --lr 1e-3 --seq_len 32 --ds 1 --batch_size 32 \
--epochs 300 --schedule 250 280 -j 16

CoCLR pretrain on K400 for one cycle

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_coclr.py --net s3d --topk 5 --moco-k 16384 \
--dataset k400-2stream-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 50 --schedule 40 --name_prefix Cycle1-FlowMining_ -j 8 \
--pretrain {rgb_infoNCE_checkpoint.pth.tar} {flow_infoNCE_checkpoint.pth.tar}

CUDA_VISIBLE_DEVICES=0,1 python -m torch.distributed.launch \
--nproc_per_node=2 main_coclr.py --net s3d --topk 5 --moco-k 16384 --reverse \
--dataset k400-2stream-2clip --seq_len 32 --ds 1 --batch_size 32 \
--epochs 50 --schedule 40 --name_prefix Cycle1-RGBMining_ -j 8 \
--pretrain {flow_infoNCE_checkpoint.pth.tar} {rgb_cycle1_checkpoint.pth.tar}

Finetune Instruction

cd eval/ e.g. finetune UCF101-rgb:

CUDA_VISIBLE_DEVICES=0,1 python main_classifier.py --net s3d --dataset ucf101 \
--seq_len 32 --ds 1 --batch_size 32 --train_what ft --epochs 500 --schedule 400 450 \
--pretrain {selected_rgb_pretrained_checkpoint.pth.tar}

then run the test with 10-crop (test-time augmentation is helpful, 10-crop gives better result than center-crop):

CUDA_VISIBLE_DEVICES=0,1 python main_classifier.py --net s3d --dataset ucf101 \
--seq_len 32 --ds 1 --batch_size 32 --train_what ft --epochs 500 --schedule 400 450 \
--test {selected_rgb_finetuned_checkpoint.pth.tar} --ten_crop

Nearest-neighbour Retrieval Instruction

cd eval/ e.g. nn-retrieval for UCF101-rgb

CUDA_VISIBLE_DEVICES=0 python main_classifier.py --net s3d --dataset ucf101 \
--seq_len 32 --ds 1 --test {selected_rgb_pretrained_checkpoint.pth.tar} --retrieval

Linear-probe Instruction

cd eval/

from extracted feature

The code support two methods on linear-probe, either feed the data end-to-end and freeze the backbone, or train linear layer on extracted features. Both methods give similar best results in our experiments.

e.g. on extracted features (after run NN-retrieval command above, features will be saved in os.path.dirname(checkpoint))

CUDA_VISIBLE_DEVICES=0 python feature_linear_probe.py --dataset ucf101 \
--test {feature_dirname} --final_bn --lr 1.0 --wd 1e-3

Note that the default setting should give an alright performance, maybe 1-2% lower than our paper's figure. For different datasets, lr and wd need to be tuned from lr: 0.1 to 1.0; wd: 1e-4 to 1e-1.

load data and freeze backbone

alternatively, feed data end-to-end and freeze the backbone.

CUDA_VISIBLE_DEVICES=0,1 python main_classifier.py --net s3d --dataset ucf101 \
--seq_len 32 --ds 1 --batch_size 32 --train_what last --epochs 100 --schedule 60 80 \
--optim sgd --lr 1e-1 --wd 1e-3 --final_bn --pretrain {selected_rgb_pretrained_checkpoint.pth.tar}

Similarly, lr and wd need to be tuned for different datasets for best performance.

Dataset

RGB for UCF101: [download-from-server] [download-from-gdrive] (tar file, 29GB, packed with lmdb)
TVL1 optical flow for UCF101: [download-from-server] [download-from-gdrive] (tar file, 20.5GB, packed with lmdb)
Note: I created these lmdb files with msgpack==0.6.2, when load them with msgpack>=1.0.0, you can do msgpack.loads(raw_data, raw=True)(issue#32)

Result

Finetune entire network for action classification on UCF101:

Pretrained Weights

Our models:

UCF101-RGB-CoCLR: [download] [[email protected]=51.8 on UCF101-RGB]
UCF101-Flow-CoCLR: [download] [[email protected]=48.4 on UCF101-Flow]

Baseline models:

UCF101-RGB-InfoNCE: [download] [[email protected]=33.1 on UCF101-RGB]
UCF101-Flow-InfoNCE: [download] [[email protected]=45.2 on UCF101-Flow]

Kinetics400-pretrained models：

K400-RGB-CoCLR: [download] [[email protected]=45.6, [email protected]=87.89 on UCF101-RGB]
K400-Flow-CoCLR: [download] [[email protected]=44.4, [email protected]=85.27 on UCF101-Flow]
Two-stream result by average the class probability: 0.8789 + 0.8527 => 0.9061

[NeurIPS'20] Self-supervised Co-Training for Video Representation Learning. Tengda Han, Weidi Xie, Andrew Zisserman.

Related tags

Overview

CoCLR: Self-supervised Co-Training for Video Representation Learning

Link:

News

Pretrain Instruction

Finetune Instruction

Nearest-neighbour Retrieval Instruction

Linear-probe Instruction

from extracted feature

load data and freeze backbone

Dataset

Result

Pretrained Weights

Owner

Tengda Han

[ACL 20] Probing Linguistic Features of Sentence-level Representations in Neural Relation Extraction

"Learning Free Gait Transition for Quadruped Robots vis Phase-Guided Controller"

Code for the Shortformer model, from the paper by Ofir Press, Noah A. Smith and Mike Lewis.

Re-implementation of the vector capsule with dynamic routing

Technical Analysis library in pandas for backtesting algotrading and quantitative analysis

UmlsBERT: Clinical Domain Knowledge Augmentation of Contextual Embeddings Using the Unified Medical Language System Metathesaurus

JAX + dataclasses

Text to Image Generation with Semantic-Spatial Aware GAN

Official Repsoitory for "Activate or Not: Learning Customized Activation." [CVPR 2021]

lightweight python wrapper for vowpal wabbit

Official implementation of the paper "Steganographer Detection via a Similarity Accumulation Graph Convolutional Network"

A user-friendly research and development tool built to standardize RL competency assessment for custom agents and environments.

Code to produce syntactic representations that can be used to study syntax processing in the human brain

This is a repository for a No-Code object detection inference API using the OpenVINO. It's supported on both Windows and Linux Operating systems.

Python implementation of Bayesian optimization over permutation spaces.

Shitty gaze mouse controller

LegoDNN: a block-grained scaling tool for mobile vision systems

Finetuner allows one to tune the weights of any deep neural network for better embeddings on search tasks

Code and hyperparameters for the paper "Generative Adversarial Networks"

Pytorch implementation of Generative Models as Distributions of Functions 🌿