Relevance Score in db.FTSearch

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject: Relevance Score in db.FTSearch

Feedback Type: Problem

Product Area: Domino Designer on Eclipse (DDE)

Technical Area: Application Development

Platform: Windows

Release: 8.5.2

Reproducible: Always

Hi,

Can someone please help me understand how the relevance scores are calculated by db.FTSearch method. I need to understand the logic behind scores calculation.

As per my information, it depends on no. of occurences and Termweight or Proximity assigned in query and created date of the document, but not the exact logic behind it.

Search Method Used: database.FTSearch(query,0,8,8192);

Query used is: var query = '([Form=FormTemplate]) AND ((FIELD Frm_Title CONTAINS *'+@Trim(viewScope.query)+'* AND (TERMWEIGHT 500 '+viewScope.query+' OR TERMWEIGHT 430 *'+@Trim(viewScope.query)+'*)) OR (TERMWEIGHT 15 '+viewScope.query+' OR TERMWEIGHT 5 *'+@Trim(viewScope.query)+'*))'

I have been able to extract the relevance scores and for similar scores the documents are ordered based on created date. Recently created documents at the top.

I am using above query to search in Frm_Title field first and then in complete document, therefore tried assigning different weights. It works with correct order of the documents upto 90%, but still 10% documents are not in corrected order based on there relevant scores calculated by lotus notes.

So, I need to understand 2 things:

1. How the relevance scores are calculated?
2. Is there any way to improve above mentioned query so that it works for all the documents.

Any sort of help will be great, as I am stucked into this since a long now.

Regards,
Yashu

Feedback number WEBB8KTABX created by ~Jennifer Cishipiplopetsi on 08/17/2011

Status: Open
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