RE: Boost more recent document

2011-12-01 Thread Zhang, Lisheng
-Original Message- From: Simon Willnauer [mailto:simon.willna...@googlemail.com] Sent: Thursday, December 01, 2011 11:34 AM To: Zhang, Lisheng Cc: java-user@lucene.apache.org Subject: Re: Boost more recent document On Thu, Dec 1, 2011 at 8:30 PM, Zhang, Lisheng wrote: > Hi Simon, > >

Re: Boost more recent document

2011-12-01 Thread Simon Willnauer
; > -Original Message- > From: Simon Willnauer [mailto:simon.willna...@googlemail.com] > Sent: Thursday, December 01, 2011 11:21 AM > To: Zhang, Lisheng > Cc: java-user@lucene.apache.org > Subject: Re: Boost more recent document > > > On Thu, Dec 1, 2011 at 7:36 AM,

RE: Boost more recent document

2011-12-01 Thread Zhang, Lisheng
: Boost more recent document On Thu, Dec 1, 2011 at 7:36 AM, Zhang, Lisheng wrote: > Hi Simon, > > Sorry I found that I cannot use payload for this purpose because payload > can be accessed only through term positions but we did not use timestamp > for query. Ideally it would be

Re: Boost more recent document

2011-12-01 Thread Simon Willnauer
helps, please point out if you see wrong > in above statements? > > Best regards, Lisheng > > -Original Message- > From: Zhang, Lisheng [mailto:lisheng.zh...@broadvision.com] > Sent: Wednesday, November 30, 2011 1:40 PM > To: java-user@lucene.apache.org; simon.willna...@

RE: Boost more recent document

2011-11-30 Thread Zhang, Lisheng
apache.org; simon.willna...@gmail.com Subject: RE: Boost more recent document Hi, Thanks for the very interesting idea! Currently we use lucene 2.3.2 and we just use default merge policy (at any time we have a few segments and after some accumulation small segments are merged into big ones). I need to do

RE: Boost more recent document

2011-11-30 Thread Zhang, Lisheng
: Wednesday, November 30, 2011 1:02 PM To: java-user@lucene.apache.org Subject: Re: Boost more recent document If you use LogMergePolicy ie. do merges in order you could use the absolute docID as a relative age value. Smaller docIDs mean younger documents. Maybe this works for you? simon On Wed, Nov 30

Re: Boost more recent document

2011-11-30 Thread Simon Willnauer
esday, November 30, 2011 11:40 AM > To: java-user@lucene.apache.org > Subject: Re: Boost more recent document > > > On Wed, Nov 30, 2011 at 6:59 PM, Zhang, Lisheng > wrote: >> Hi, >> >> We need to boost document which is more recent (each doc has time stamp &

RE: Boost more recent document

2011-11-30 Thread Zhang, Lisheng
...@googlemail.com] Sent: Wednesday, November 30, 2011 11:40 AM To: java-user@lucene.apache.org Subject: Re: Boost more recent document On Wed, Nov 30, 2011 at 6:59 PM, Zhang, Lisheng wrote: > Hi, > > We need to boost document which is more recent (each doc has time stamp > attribute). I

Re: Boost more recent document

2011-11-30 Thread Simon Willnauer
On Wed, Nov 30, 2011 at 6:59 PM, Zhang, Lisheng wrote: > Hi, > > We need to boost document which is more recent (each doc has time stamp > attribute). It seems that > we cannot use doc boost at index time because it will be condensed into one > byte (cannot differentiate > 365 days), so we may u

Boost more recent document

2011-11-30 Thread Zhang, Lisheng
Hi, We need to boost document which is more recent (each doc has time stamp attribute). It seems that we cannot use doc boost at index time because it will be condensed into one byte (cannot differentiate 365 days), so we may use payload (save time stamp as payload) to boost at search time.