5. Experimental Setup
We used one open source information retrieval
library (Apache Lucene 2.3.2) and two open source
relational database management systems with full-text search capabilities (PostgreSQL 8.3.1 and MySQL Server 5.0) for retrieval experiments. We would like to
add more relational databases to our experiments but other popular relational database vendors such as IBM DB2, Microsoft SQL Server, and Oracle do not permit
disclosure results of any program benchmark tests without their prior consent.