How to do OR search in Nutch?

[Kannan Sundaramoorthy <ka...@cognizant.com>]

Hi,
When searching for two terms using OR operator (or with just space
between two terms), nutch returns the results as if the terms were
united by AND, i.e. does not search for each term separately. Nutch just
looks for documents where both terms are present. 
Does "OR" search require change in any configuration file? Any
help/guidance will be of great help tom me.

Thanks,
Kannan


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Re: [Nutch-dev] Re: How to do OR search in Nutch?

[Hasan Diwan <ha...@gmail.com>]

> On Apr 12, 2005 1:30 AM, Doug Cutting <cu...@nutch.org> wrote:
> >
> > OR is not yet supported by Nutch's query parser.

It seems that this should be a pretty easy thing to support. Run both
queries individually, add them to a java.util.Set and convert it back
to results.

-- 
Cheers,
Hasan Diwan <ha...@gmail.com>

Re: How to do OR search in Nutch?

[Andy Liu <an...@gmail.com>]

You would need to make a custom query filter plugin.  You'll want to
look at the query-basic plugin as an example of how it constructs a
Lucene query from a Nutch query.

On Apr 12, 2005 12:34 AM, zhang jin <pr...@gmail.com> wrote:
> If I want to support Or.How I should do?
> Thanks very much!
> 
> On Apr 12, 2005 1:30 AM, Doug Cutting <cu...@nutch.org> wrote:
> >
> > Kannan Sundaramoorthy wrote:
> > > When searching for two terms using OR operator (or with just space
> > > between two terms), nutch returns the results as if the terms were
> > > united by AND, i.e. does not search for each term separately. Nutch just
> > > looks for documents where both terms are present.
> > > Does "OR" search require change in any configuration file? Any
> > > help/guidance will be of great help tom me.
> >
> > OR is not yet supported by Nutch's query parser.
> >
> > Doug
> >
> 
>

Re: How to do OR search in Nutch?

[zhang jin <pr...@gmail.com>]

If I want to support Or.How I should do?
Thanks very much!

On Apr 12, 2005 1:30 AM, Doug Cutting <cu...@nutch.org> wrote:
> 
> Kannan Sundaramoorthy wrote:
> > When searching for two terms using OR operator (or with just space
> > between two terms), nutch returns the results as if the terms were
> > united by AND, i.e. does not search for each term separately. Nutch just
> > looks for documents where both terms are present.
> > Does "OR" search require change in any configuration file? Any
> > help/guidance will be of great help tom me.
> 
> OR is not yet supported by Nutch's query parser.
> 
> Doug
>

Re: How to do OR search in Nutch?

[Doug Cutting <cu...@nutch.org>]

Kannan Sundaramoorthy wrote:
> When searching for two terms using OR operator (or with just space
> between two terms), nutch returns the results as if the terms were
> united by AND, i.e. does not search for each term separately. Nutch just
> looks for documents where both terms are present. 
> Does "OR" search require change in any configuration file? Any
> help/guidance will be of great help tom me.

OR is not yet supported by Nutch's query parser.

Doug