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Reply-To: solr-user@lucene.apache.org
Subject: Re: Trouble boosting a field
To: solr-user@lucene.apache.org
References: <1c6b49a6-7d77-e455-2e9b-c92522f94c26@extravision.com>
 <53934558-4442-4D64-BADA-E0C0FDF2FD7B@wunderwood.org>
 <e0dbf0c6-b644-9700-798b-6af94849dc59@extravision.com>
 <955CEC75-4D1E-40FD-8EBD-7804B962C86B@flax.co.uk>
From: Tom Chiverton <tc@extravision.com>
Message-ID: <24bb4c68-d1e0-3f64-8e3c-427342bcf5a3@extravision.com>
Date: Mon, 16 Jan 2017 09:47:43 +0000
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Ohh, that's handy ! But it needs Solr/ElasticSearch to be publicly 
accessible ?


On 14/01/17 09:23, Alan Woodward wrote:
> http://splainer.io/ <http://splainer.io/> from the gents at OpenSourceConnections is pretty good for this sort of thing, I find…
>
> Alan Woodward
> www.flax.co.uk
>
>
>> On 13 Jan 2017, at 16:35, Tom Chiverton <tc@extravision.com> wrote:
>>
>> Well, I've tried much larger values than 8, and it still doesn't seem to do the job ?
>>
>> For now, assume my users are searching for exact sub strings of a real title.
>>
>> Tom
>>
>>
>> On 13/01/17 16:22, Walter Underwood wrote:
>>> I use a boost of 8 for title with no boost on the content. Both Infoseek and Inktomi settled on the 8X boost, getting there with completely different methodologies.
>>>
>>> You might not want the title to completely trump the content. That causes some odd anomalies. If someone searches for “ice age 2”, do you really want every title with “2” to come before “ice age two”? Or a search for “steve jobs” to return every article with “job” or “jobs” in the title first?
>>>
>>> Also, use “edismax”, not “dismax”. Dismax was obsolete in Solr 3.x, five years ago.
>>>
>>> wunder
>>> Walter Underwood
>>> wunder@wunderwood.org
>>> http://observer.wunderwood.org/  (my blog)
>>>
>>>
>>>> On Jan 13, 2017, at 7:10 AM, Tom Chiverton <tc@extravision.com> wrote:
>>>>
>>>> I have a few hundred documents with title and content fields.
>>>>
>>>> I want a match in title to trump matches in content. If I search for "connected vehicle" then a news article that has that in the content shouldn't be ranked higher than the page with that in the title is essentially what I want.
>>>>
>>>> I have tried dismax with qf=title^2 as well as several other variants with the standard query parser (like q="title:"foo"^2 OR content:"foo") but documents without the search term in the title still come out before those with the term in the title when ordered by score.
>>>>
>>>> Is there something I am missing ?
>>>>
>>>>  From the docs, something like q=title:"connected vehicle"^2 OR content:"connected vehicle" should have worked ? Even using ^100 didn't help.
>>>>
>>>> I tried with the dismax parser using
>>>>
>>>>        "q": "Connected Vehicle",
>>>>        "defType": "dismax",
>>>>        "indent": "true",
>>>>        "qf": "title^2000 content",
>>>>        "pf": "pf=title^4000 content^2",
>>>>        "sort": "score desc",
>>>>        "wt": "json",
>>>>
>>>> but that was not better. if I remove content from pf/qf then documents seem to rank correctly.
>>>> Example query and results (content omitted) : http://pastebin.com/5EhrRJP8 <http://pastebin.com/5EhrRJP8> with managed-schema http://pastebin.com/mdraWQWE <http://pastebin.com/mdraWQWE>
>>>>
>>>> -- 
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>>>> Tom Chiverton
>>>> Lead Developer
>>>> <spacer.gif>
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