How is relevancy calculated in article search?

[kalyansonu5]

Hi All,

I wanted to understand, how is relevancy calculated in articles search (related search) from a HR case form. Sometimes the relevancy score shows very high, for ex: 1000+ points and sometimes it shows in 100's. I want to know how it is calculated. I understand that the match of Article short description, meta, and body plays a role here. But, want to understand the entire concept behind this.

Thanks in advance.

[mr_Bhaskar]

i have two questions on this 

1. Is the relevancy score precomputed and stored in a table/database, or is it calculated dynamically (on the fly)?

2. Which table or data source is being used to compute or store the relevancy scores based on the defined "guidelines"?
   
   Thanks,