Based on zerocash. We are using snark and other cryptographic primitives to design blockchain with various data access permissions.
Based on Mikolov et al.'s work: word2vec. I investigate context-based techniques and adapt word2vec to account for expanded contexts. Experiments on similarity benchmarks show significant improve-ments for rare words.
Work on Order Reveal Encryption and Function Reveal Encryption. We designed some IND-OCPA schemes for high dimensional Order Reveal Encryption and Hamming distance Reveal Encryption.
Work on find the lower bound and upper bound of find the global sink of Unique Sink Orientations of Cubes. We only have some failure attempts. This is a quite hard open problem.
Work on designing compression algorithm on bitmap indexes of traffic data archive. I propose a new algorithm, which can be applied on more scenarios and achieves a good performance in both theoretical and implementation. A first-authored paper: BAH: A Bitmap Index Compression Algorithm for Fast Data Retrieval is to be submitted to LCN2016
Chenxing Li — Tsinghua University