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From Erik Hatcher <e...@ehatchersolutions.com>
Subject Re: Term Collection Frequency?
Date Wed, 04 Aug 2004 15:34:40 GMT
On Aug 4, 2004, at 8:25 AM, ABDOU Samir wrote:
> What about the frequency of any given term in the whole collection!?

IndexReader.docFreq(Term t)

> Calculate this at runtime may affect considerably performance!

It's computed during indexing!  :)

	Erik


>
> Thanks,
>
>
> -----Message d'origine-----
> De : Erik Hatcher [mailto:erik@ehatchersolutions.com]
> Envoyé : mercredi, 4. août 2004 12:25
> À : Lucene Developers List
> Objet : Re: Term Collection Frequency?
>
> The new term vector feature will give you this exact information for a
> particular document or field.
>
> 	Erik
>
>
> On Aug 4, 2004, at 3:59 AM, ABDOU Samir wrote:
>
>> Hi,
>>
>> In order to implement a new search model within Lucene 
>> (probabilistic),
>> I need a collection frequency of each term (the number of occurrences
>> of
>> a term within a collection). So, what would be the best way to
>> implement
>> this?
>>
>> Any suggestions, ideas... are welcome.
>>
>> Thanks,
>>
>>
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