search for: pfordelta

...ersonal information. I'm a master student from Peking University, Beijing, China. My research area is search engine and web mining, and I've been focusing on compression algorithms of posting lists in search engines since last February. I have proposed a novel decoding algorithm called SIMD-PFORDelta, which exploit SIMD instructions in PFORDelta. It is fast and can achieve good compression ratio. Recently, I also did some experiments to test the state-of-the-art and proposed encoding algorithms of posting lists. We used our own search engine called PARADISE and the datasets are GOV2(25 million...