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From Stanislaw Osinski <stanislaw.osin...@carrotsearch.com>
Subject Re: Clustering results limit?
Date Thu, 22 Jul 2010 08:15:57 GMT
Hi,

 I am attempting to cluster a query. It kinda works, but where my
> (regular) query returns 500 results the cluster only shows 1-10 hits for
> each cluster (5 clusters). Never more than 10 docs and I know its not
> right. What could be happening here? It should be showing dozens of
> documents per cluster.
>

Just to clarify -- how many documents do you see in the response (<result
name="response" /> section)? Clustering is performed on the search results
(in real time), so if you request 10 results, clustering will apply only to
those 10 results. To get a larger number of clusters you'd need to request
more results, e.g. 50, 100, 200 etc. Obviously, the trade-off here is that
it will take longer to fetch the documents from the index, clustering time
will also increase. For some guidance on choosing the clustering algorithm,
you can take a look at the following section of Carrot2 manual:
http://download.carrot2.org/stable/manual/#section.advanced-topics.fine-tuning.choosing-algorithm
.

Cheers,

Staszek

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