moonshotter at gmail
Jul 14, 2005, 8:51 AM
Post #4 of 4
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hi, munavalli,
for the (1), (2), (3), it seems only proximity could solve this
problem. and for (4), lucene has consider it with coordinate time of
a document.
in my idea, you are partially right for Proximarity search, since
proximity consider the sequence of terms at the same time.
On 7/14/05, Rajesh Munavalli <rajeshm [at] dessci> wrote:
> What if my intention was to find all three words in a document not
> necessarily in one sentence? Here is my goal
>
> (1) All three words appearing together should be given Rank 1
> (2) Three words appearing somewhere in the sentence given Rank 2
> (3) Documents containing words in different sentences should be given
> Rank 3
> (4) Documents missing one or more of query terms should be given Rank 4
>
> Correct me if I am wrong... Proximity search is concerned about query
> terms appearing closer to one another within a certain distance in the
> document.
>
> Thanks,
>
> Rajesh Munavalli
>
> -----Original Message-----
> From: Chen Wei Zhu [mailto:moonshotter [at] gmail]
> Sent: Thursday, July 14, 2005 10:40 AM
> To: general [at] lucene
> Subject: Re: n-gram and multiword query
>
> i remember lucene doesn't do anything for proximity.
>
> On 7/14/05, Rajesh Munavalli <rajeshm [at] dessci> wrote:
> > Consider a document with the following contents " Levenshtein distance
>
> > is named after the Russian scientist Vladimir Levenshtein and is also
> > called edit distance"
> >
> > Possible bi-grams are (after removing the stop words in the beginning
> > and end) "Levenshtein distance", "named after", "Russian scientist",
> > "scientist Vladimir", "Vladimir Levenshtein" called edit", "edit
> > distance"
> >
> > If my query term is "Vladimir levenshtein distance", how does Lucene
> > compute the similarity to the indexed terms? Are query terms appearing
>
> > together given more importance? How does it account for gaps (caused
> > by stop word removal) while matching multiword query?
> >
> > thanks,
> >
> > Rajesh Munavalli
> >
> >
>
>
> --
> Thanks!
> yours, WeiZhu Chen
>
--
Thanks!
yours, WeiZhu Chen
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