This repository contains the MATLAB implementation of the following paper:

Hashing with Mutual Information,
Fatih Cakir*, Kun He*, Sarah Adel Bargal, and Stan Sclaroff. TPAMI 2019 (PDF, arXiv)

If you use this code in your research, please cite:

@inproceedings{Cakir_deep_mihash,
  author    = {Fatih Cakir and Kun He and Sarah Adel Bargal and Stan Sclaroff},
  title     = {Hashing with Mutual Information},
  booktitle = {IEEE Transactions on Pattern Analysis and Machine Intelligence},
  year      = {2019},
}

⚠️ The hbmp branch contains the implementation of the following paper:

Hashing with Binary Matrix Pursuit,
Fatih Cakir, Kun He, and Stan Sclaroff. ECCV 2018 (conference page, arXiv)

If you use this code in your research, please cite:

@InProceedings{Cakir_2018_ECCV,
author = {Cakir, Fatih and He, Kun and Sclaroff, Stan},
title = {Hashing with Binary Matrix Pursuit},
booktitle = {The European Conference on Computer Vision (ECCV)},
year = {2018}
}

• Install or symlink MatConvNet at ./matconvnet (for training CNNs)
• Install or symlink VLFeat at ./vlfeat
• Download necessary datasets to ./cachedir/data/ Note: Large file ~35GB
• Download necessary model files to ./cachedir/models/
• Create ./cachedir/results/ folder to hold experimental data
• In the root folder, run startup.m

⚠️ Follow the setup instructions for HBMP in the hbmp branch.

• The main functions for experimenting are demo_imagenet.m (for the ImageNet100 benchmark) and demo_AP.m (for other benchmarks such as CIFAR-10 and NUSWIDE).
• The main arguments can be found in get_opts.m.
• Below are examples commands to replicate some of the results in the paper. Please refer to Section 5 of the paper and get_opts.m for experimental setting and parameter details. A MATLAB diary will be saved to the corresponding experimental folder.
  • CIFAR-1 32 bits:
    • demo_AP('cifar',32,'vggf','split',1,'nbins',32,'sigmf', [1 0],'lr', 1e-3,'lrstep',50,'epoch',100,'obj','mi','testInterval',10, 'batchSize', 256, 'metrics', 'AP')
    • Diary. Achieves 0.78-0.79 mAP at 100 epochs.
  • CIFAR-2 32 bits:
    • demo_AP('cifar',32,'vggf','split',2,'nbins',12,'sigmf', [30 0],'lr', 2e-3,'lrstep',50,'epoch',100,'obj','mi','testInterval',10, 'batchSize', 256, 'metrics', 'AP')
    • Diary. Achieves 0.93-0.94 mAP at 100 epochs.
  • NUSWIDE-1 32 bits :
    • demo_AP('nus',32,'vggf_ft','split',1, 'nbins',16,'sigmf', [1 0],'lr', 0.05,'lrstep',50, 'epoch',120,'obj','mi','testInterval',10, 'batchSize', 250, 'metrics', {'AP','AP@5000', 'AP@50000'})
    • Diary. Achieves 0.82-0.83 mAP@5K at 120 epochs.
  • NUSWIDE-2 32 bits :
    • demo_AP('nus',32,'vggf_ft','split',2, 'nbins',16,'sigmf', [1 0],'lr', 0.01,'lrstep',50, 'epoch',100,'obj','mi','testInterval',5, 'batchSize', 250, 'metrics', {'AP','AP@5000', 'AP@50000'})
    • Diary. Achieves 0.81-0.82 mAP@50K at 100 epochs.
  • ImageNet100 48 bits:
    • demo_imagenet(48, 'alexnet_ft', 'split', 1 , 'nbins', 16, 'lr', 0.1, 'lrdecay', 0.05, 'lrmult', 0.01, 'lrstep', 100, 'nbins', 16, 'sigmf', [10 0], 'testInterval', 25, 'metrics', {'AP', 'AP@1000'}, 'epoch', 125)
    • Diary. Achieves 0.68-0.69 mAP@1K at 125 epochs.

MIT License, see LICENSE

For questions and comments, feel free to contact: [email protected]

• This implementation extends MIHash, and is specifically designed for deep learning experiments. Special thanks to Kun and Sarah.