Constant Database (cdb) Internals
Constant Database, known as cdb, is an elegant data structure proposed by D. J. Bernstein. It is suitable for looking up static data which is associated with arbitrary byte sequences (usually strings). Although DJB already explained this in his cdb page, it is not easy to implement this because his document lacks some important information such as the number of each subtable. Here I tried to illus
Robin Hood Hashing should be your default Hash Table implementation
A Random Walk Through Geek-Space Brain dumps and other ramblings from Sebastian Sylvan Robin Hood Hashing should be your default Hash Table implementation 8/May 2013 There’s a neat variation on open-addressing based hash tables called Robin Hood hashing. This technique isn’t very well-known, but it makes a huge practical difference because it both improves performance and space utilization compare
Ultimate Sets and Maps for Java, Part I
Highly Scalable BlogArticles on Big Data, NoSQL, and Highly Scalable Software Engineering Some time ago our team had been requested to develop several Java components for structured information retrieval. After the initial research, we concluded that standard approaches like inverted indexes are not well applicable to our problem because of specific business requirements. As a result we faced a ne
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Cloud9: A MapReduce Library for Hadoop » Efficient frequency distributions and feature vectors
よくわかるHopscotch hashing
