Lucene

[Jae Joo <ja...@gmail.com>]

Hi,

Does Lucene have the function to return top 5 most frequency keywords in
the article?

Thanks,

Jae

Re: Fieldable and Document class.

[Erick Erickson <er...@gmail.com>]

There is no "update in place" functionality in Lucene. You can use
IndexModifier
which (under the covers) does a delete/add.

How dynamic is "pretty dynamic"? updating one doc/hour? Updating
1,000 docs a second?

Best
Erick

On 10/16/07, Durga.Tirunagari@sun.com <Du...@sun.com> wrote:
>
>         HI Folks,
>
>         How to address the a change in the name of the file (or) the
>     location of a file that was indexed.?. Is re-indexing this file the
>     only way out ?.
>     Since most of our files, we are planning on indexing are pretty
> dynamic.
>
>     Thank you
>     _Durga
>
>
>
>

Fieldable and Document class.

[Du...@Sun.COM]

	HI Folks,

        How to address the a change in the name of the file (or) the
    location of a file that was indexed.?. Is re-indexing this file the
    only way out ?.
    Since most of our files, we are planning on indexing are pretty dynamic.

    Thank you
    _Durga

Re: Lucene

[Grant Ingersoll <gs...@apache.org>]

Yes, with a little bit of work, as there is nothing out of the box  
for it.

If you store term vectors (or re-analyze the document) you can use  
the sample code from my ApacheCon 2005 talk (http://www.cnlp.org/ 
apachecon2005/, which also covers how to use TermVectors) OR you can  
try implementing the new TermVectorMapper functionality in the trunk  
version of Lucene.

Cheers,
Grant

On Oct 16, 2007, at 4:14 PM, Jae Joo wrote:

> Hi,
>
> Does Lucene have the function to return top 5 most frequency  
> keywords in
> the article?
>
> Thanks,
>
> Jae

--------------------------
Grant Ingersoll
http://lucene.grantingersoll.com

Lucene Boot Camp Training:
ApacheCon Atlanta, Nov. 12, 2007.  Sign up now!  http:// 
www.apachecon.com

Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ



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