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Analyzed about 1 year ago. based on code collected about 1 year ago.

Project Summary


Similarity search is required in many areas. For example, music matching and binary program matching require a similarity search engine. Nowadays, it is common to hear news of projects like "photosynth" that heavily rely on similarity search. OBSearch is a similarity search engine that can help you to create an interesting and new application!


Single-computer or distributed mode. (1)

Designed to handle efficiently heavy objects (trees, graphs).

Code generation for each primitive datatype (byte, short, int, long, float, double) for maximum performance. The API is compact and easy to understand. Stability and scalability: OBSearch's secondary storage backend is Oracle's Berkeley DB. An extensive test suite makes sure that data integrity is preserved.

Cutting edge: We strive to put together the latest algorithms the scientific community has to offer. For example, we use the K-means++ algorithm in one of our indexes.

OBSearch can live on top of any B-Tree (or anything that allows range queries for one dimension). For example, Amazon's cloud service SimpleDB http://www.amazon.com/gp/browse.html?node=342335011 OBSearch's homepage is: http://obsearch.berlios.de/

This project started as part of Google Summer of Code 2007. The mentoring organization was Portland State University.


Available indexes:


Extended Pyramid Technique P+Tree D-Index (with rho=0) K-nn graph (1) The first version 0.7-GSOC supports distributed access by JXTA. Right now, we are evaluating the distributed technology we will employ in the future.

Mailing lists: Announce: http://groups.google.com/group/obsearch-announce Users: http://groups.google.com/group/obsearch-users Dev: http://groups.google.com/group/obsearch-developers


distance distributed grid inequality java jxta kmeans m-tree p2p pptree pyramid search similarity smap triangular

In a Nutshell, obsearch...

This Project has No vulnerabilities Reported Against it

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5 Other

30 Day Summary

Apr 10 2016 — May 10 2016

12 Month Summary

May 10 2015 — May 10 2016


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