Inconsistent behavior when use Solr boosting

Question

I'm using Sitecore 9.3 and Solr 8.1.1, I have this simple query

q=itemName_t:(*test*)^80&fl=itemName_t,_templateID,score&fq=_indexname:(custom_index)&wt=xml

And these are the results:

• item1 , templateID : template1ID, score : 80
• item2 , templateID : template1ID, score : 80
• item3 , templateID : template2ID, score : 80
• item4 , templateID : template2ID, score : 80
• item5 , tempalteID : tempalte3ID, score : 80

The results are mix of multiple templates, I wanted to boost only two templates types which are template1 and template2, So I wrote this query:

q=(_template:(**template1ID**)^60 OR _template:(**template2ID**)^60) AND itemName_t:(*test*)^80&fl=itemName_t,_templateID,score&fq=_indexname:(custom_index)&wt=xml

The results became like this:

• item3 , templateID : template2ID, score : 215
• item4 , templateID : template2ID, score : 215
• item1 , templateID : template1ID, score : 90
• item2 , templateID : template1ID, score : 90
• item5 , tempalteID : tempalte3ID, score : 80

Although I boosted the two templates with the same value, template2 was boosted more higher than template1.

I enabled the solr explanation, but couldn't understand it.

Answer 1

The above query seems to be correct and the results also come as expected. Also would like to highlight that score is calculated not only based on the template only.

As I can see there are other parameters as well combined in boosting query, I would suggest having a look at the score formula on each result.

Please take solr debugger chrome extension - to get score. Hope this will help.