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Introduction

This repository includes the code for paper Context-aware zero-shot recognition.

The code is highly based on Detectron.pytorch. Thanks for the effort from original author.

Requirement

  • Pytorch 1.0
  • Python 2 and python 3
  • torchtext
  • nltk
  • pycocotools

Preparation

Download dataset

bash data/vg/download.sh

Convert from bansal train test split.

(In python 2)
python lib/datasets/vg/convert_from_bansal.py

Build necessary libs

cd lib
bash make.sh
cd ..

Download pretrained imagenet-model

python tools/download_imagenet_weights.py

To reproduce numbers in the paper

Download pretrained model from link.

run scripts in scripts/reproduce

Training

Train without unseen category annotations

bash scripts/train.sh

In this case, --cfg defines the general training test configuration, like roi align size, backbone bone etc.

--auto_resume enables it to resume from the latest snapshot, this has to be used with --id together.

--set overrides the items in the configuration files. Here we manually set NUM_CLASSES BASE_LR and MODEL.TAGGING.

--id allow us to identify where we save our model much easier.

iter_reason_new.yaml is borrowed from xinlei's iterative reasoning paper.

Train with word embedding as last layer

bash scripts/train_we.sh

This append MODEL.WORD_EMBEDDING_REGU True in '--set'.

Normally, the last fc layer of fast rcnn head is 2048x601, where here this layer is replaced by two linear layer 2048x300 and 300x601. The weight of 300x601 layer is the word embedding of all the classes.

Train with relation inference model.

bash train_rel.sh (bash train_we_rel.sh)

Test in region classification setting

Test with WE

bash scripts/test/we_infer.sh
bash scripts/test/we_noinfer.sh

Test with conse

bash scripts/test/conse_infer.sh
bash scripts/test/conse_noinfer.sh

Test with gcn

Download zsl-pth-gcn to ./externals.

(In python 2)
python lib/zsl-gcn/convert_gcn.py --weight_folder ./Outputs/rel_ft/ft_gt_relt_geo_sc
bash scripts/test/gcn_infer.sh
bash scripts/test/gcn_noinfer.sh

Test with sync

(In python 2)
python lib/zsl-gcn/convert_sync.py --weight_folder ./Outputs/iter_reason_new/irn_vg_gt_sc_step --dataset vgbansal --to_weight Outputs/rel_ft/ft_gt_relt_geo_sc_step/ckpt/model_final.pth

Test in detection setting:

Get edgebox proposals

cd ./external/edges
get_proposals.m
python to_raw_proposals.py
cd ../../data/vg/bansal/
python generate_proposals.py

or download from link, and put it under ./data/vg/bansal

Test

bash scripts/test/detection_gcn.sh
bash scripts/test/detection_sync.sh

About

Official code for paper Context-aware Zero-shot Recognition (https://arxiv.org/abs/1904.09320 to appear at AAAI2020)

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