UML class diagram and sequence diagram?

Hi, Is there someone who has developed the UML class diagram of Lucene? I’m also looking for the sequence diagram for search package! These diagrams will really help me to understand the architecture of Lucene. Best regards, Timad - A

comparing two IR systems and statistical tests

Hi, Based on two (or more) results list (in TREC formats), how can we compare two IR systems using statistical tests? Could someone show me how to do that? Examples and tutorial links are welcome… Thank you, Timad - Appel audio GRA