Re: Understanding Performance of Function Query

[Sidharth Negi <si...@gmail.com>]

To those interested, I was able to disable coord factor by overriding it in
a new CustomSimilarity jar file. This can effectively sum the scores from
multiple edismax queries.
However, I'd be interested in any other methods which are able to do
not-just-direct-sums and can work on other logics for scores, eg. sqrt(q1)
+ sqrt(q2) + 0.6*q3.

On Wed, Apr 17, 2019 at 6:20 PM Sidharth Negi <si...@gmail.com>
wrote:

> This does indeed reduce the time. but doesn't quite do what I wanted. This
> approach penalizes the docs based on "coord" factor. In other words, for a
> doc with scores=5 on just one query (and nothing on others), the resulting
> score would now be 5/3 since only one clause matches.
>
> 1. I wonder why does the above query work at all? I can't find the above
> query syntax anywhere in any docs or books on Solr, can you point me to
> your source for this syntax?
>
> 2. Which parser is used to parse the larger query? No info about the
> parser used for the larger query is given from parsedQuery field. (using
> debug=true)
>
> 3. What if I did not want to sum (the scores of q1, q2, q3) but rather
> wanted to use their values in some other way (eg. sqrt(q1) + sqrt(q2) +
> 0.6*q3). Is there no way of cleanly implementing a flow of computations to
> be done on sub-query scores?
>
> On Tue, Apr 9, 2019 at 7:40 PM Erik Hatcher <er...@gmail.com>
> wrote:
>
>> maybe something like q=
>>
>>     ({!edismax .... v=$q1} OR {!edismax .... v=$q2} OR {!edismax ...
>> v=$q3})
>>
>>  and setting q1, q2, q3 as needed (or all to the same maybe with
>> different qf’s and such)
>>
>>       Erik
>>
>> > On Apr 9, 2019, at 09:12, sidharth228 <si...@gmail.com> wrote:
>> >
>> > I did infact use "bf" parameter for individual edismax queries.
>> >
>> > However, the reason I can't condense these edismax queries into a single
>> > edismax query is because each of them uses different fields in "qf".
>> >
>> > Basically what I'm trying to do is this: each of these edismax queries
>> (q1,
>> > q2, q3) has a logic, and scores docs using it. I am then trying to
>> combine
>> > the scores (to get an overall score) from these scores later by summing
>> > them.
>> >
>> > What options do I have of implementing this?
>> >
>> >
>> >
>> >
>> > --
>> > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
>>
>