This repository contains code and pre-trained models for our NAACL-2022 paper MCSE: Multimodal Contrastive Learning of Sentence Embeddings. If you find this reposity useful, please consider citing our paper.

Contact: Miaoran Zhang (mzhang@lsv.uni-saarland.de)

Note: flickr indicates that models are trained on wiki+flickr, and coco indicates that models are trained on wiki+coco.

• Python 3.9.5
• Pytorch 1.7.1
• Install other packages:

pip install -r requirements.txt

Please organize the data directory as following:

REPO ROOT
|
|--data    
|  |--wiki1m_for_simcse.txt  
|  |--flickr_random_captions.txt    
|  |--flickr_resnet.hdf5    
|  |--coco_random_captions.txt    
|  |--coco_resnet.hdf5  

Wiki1M

wget https://huggingface.co/datasets/princeton-nlp/datasets-for-simcse/resolve/main/wiki1m_for_simcse.txt

Flickr30k & MS-COCO
You can either download the preprocessed data we used:
(annotation sources: flickr30k-entities and coco).

• flickr_random_captions.txt
• flickr_resnet.hdf5
• coco_random_captions.txt
• coco_resnet.hdf5

Or preprocess the data by yourself (take Flickr30k as an example):

1. Download the flickr30k-entities.
2. Request access to the flickr-images from here. Note that the use of the images much abide by the Flickr Terms of Use.
3. Run script:

   unzip ${path_to_flickr-entities}/annotations.zip
   
   python preprocess/prepare_flickr.py \
       --flickr_entities_dir ${path_to_flickr-entities}  \  
       --flickr_images_dir ${path_to_flickr-images} \
       --output_dir data/
       --batch_size 32
   

1. Prepare the senteval datasets for evaluation:

   cd SentEval/data/downstream/
   bash download_dataset.sh
   

2. Run scripts:

   # For example:  (more examples are given in scripts/.)
   sh scripts/run_wiki_flickr.sh

   Note: In the paper we run experiments with 5 seeds (0,1,2,3,4). You can find the detailed parameter settings in Appendix.

• The extremely clear and well organized codebase: SimCSE
• SentEval toolkit