Re: Re: Many keywords problem

2012-05-08 Thread 周洲
Let me leave,3q~ 2012/5/8 Li Li > But this only get (term1 or term2 or term3. ). you can't > implement (term1 or term2 ...) and (term3 or term4) by this method. > maybe you should writer your own Scorer to deal with this kind of queries. > > On Tue, May 8, 2012 at 9:44 PM, Li Li wrote: > >

Re: Re: Many keywords problem

2012-05-08 Thread Li Li
But this only get (term1 or term2 or term3. ). you can't implement (term1 or term2 ...) and (term3 or term4) by this method. maybe you should writer your own Scorer to deal with this kind of queries. On Tue, May 8, 2012 at 9:44 PM, Li Li wrote: > disjunction query is much slower than conjuct

Re: Re: Many keywords problem

2012-05-08 Thread Li Li
disjunction query is much slower than conjuction query. That's why many search engine use conjuction as default. by the way, you say you have 5,000,000 documents. how many documents match your query? do you need sort by relevant score or just want to match and don't care sort? if you don't care sor

Re:Re: Many keywords problem

2012-05-08 Thread 齐保元
Thanks for you reply,firstly. So many or query is to monitor the term.One scene is that:if i want to know cities of a province and events that happens, I may instantiate the query like "(California or NewYork or SanFransico or SomePlace) and (Pollution or Criminal ... or Alcohol)".

Re: Many keywords problem

2012-05-08 Thread Li Li
a disjunction (or) query of so many terms is indeed slow. can u describe your real problem? why you should the disjunction results of so many terms? On Sun, May 6, 2012 at 9:57 PM, qibaoy...@126.com wrote: > Hi, >       I met a problem about how to search many keywords  in about 5,000,000 > do

Many keywords problem

2012-05-07 Thread qibaoy...@126.com
Hi, I met a problem about how to search many keywords in about 5,000,000 documents.For example the query may be like "(a1 or a2 or a3 a200) and (b1 or b2 or b3 or b4 . b400)",I found it will take vey long time(40seconds) to get the the answer in only one field(Title field),and JV