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From Jason Rutherglen <jason.rutherg...@gmail.com>
Subject Re: Distributed search capability
Date Fri, 10 Jun 2011 17:51:44 GMT
Out of curiosity, how is DF handled with the new automaton [regex] queries?

On Fri, Jun 10, 2011 at 10:48 AM, Andrzej Bialecki <ab@getopt.org> wrote:
> On 6/10/11 6:27 PM, Michael McCandless wrote:
>>
>> I'm actually working on something like this, basically a utility
>> method to merge N TopDocs into 1.  I want to do this for grouping as
>> well to make it easy to do grouping across shards.
>
> Mike,
>
> The straightforward merge that is used in Solr suffers from incomparable
> scores (due to the lack of global IDF). See my slides from the Buzzwords.
> Since we can handle global IDF in local searchers more easily that in Solr
> then we can reuse that DfCache trick from MultiSearcher.
>
>
> --
> Best regards,
> Andrzej Bialecki     <><
>  ___. ___ ___ ___ _ _   __________________________________
> [__ || __|__/|__||\/|  Information Retrieval, Semantic Web
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>
>
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