SCRATCH demo on Wiki dataset.

Paper : SCRATCH: A Scalable Discrete Matrix Factorization Hashing for Cross-Modal Retrieval
Author : Chuan-Xiang Li, Zhen-Duo Chen, Peng-Fei Zhang, Xin Luo, Liqiang Nie, Wei Zhang, Xin-Shun Xu
Published in ACM MM 2018
Contact : [email protected]

This is a simplified demo for the ACM MM 2018 paper, including:
train.m: function to compute the hash code and hash function of training data.
evaluate.m : function to evaluate the performance of hashing method.
mAP.m : function to compute the mAP of hashing method.
Kernelize.m: function to transform the original features to kernel features.
Main_Wiki.m: example script to run the code on the Wiki dataset.