> i want to implements pagination like google search result page in my
> project.We use lucene3.3.Here are 2 issue:
> 1.How can i get the number of matched documents
TopDocs.totalHits
> 2.What is the best practice for lucene search results pagination
http://wiki.apache.org/lucene-java/Lu
thanks.Ian.
The number of the results matched the query is the return value: TopDocs
search(Query query, int n) ,the n arg pass to the method means that lucene just
search the top n results.But i want to get the matched number that is the whole
index returned not the n i pass into the TopDocs
You can use SOLR.
On Wed, Sep 21, 2011 at 1:37 PM, Ian Lea wrote:
>> i want to implements pagination like google search result page in my
>> project.We use lucene3.3.Here are 2 issue:
>> 1.How can i get the number of matched documents
>
> TopDocs.totalHits
>
>> 2.What is the best practice
That is impossible.We just use lucene in my project at the monent.Maybe in the
future we change to solr.anyway thanks for your advice
2011-09-21
janwen | China
website : http://www.qianpin.com/
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The n in search(Query query, int n) specifies the number of hits
(docs) you want returned. There is no point in lucene accumulating
10,000 if you only want 10 for the first page.
TopDocs.totalHits tells you the total number of hits for the query.
If you actually want all the hits, see the thread
Google results page will show these info:About 439,000,000 results (0.21
seconds)
so i think any application will show the total matched results to the
user.Lucene need to think about implement this function?haha
thanks Ian. I will search the mail archive.
2011-09-21
janwen | China
website
totalHits = searcher.search( query,searcher.maxDoc()).scoreDocs.length
Dear List,
for multi term expressions I'd like to add higher rank if the matches are
closer to each other. For example for the search term "like eating" the
string "i like eating" comes before "I like some eating".
Is this possible?
Thanks in advance,
Ákos Tajti
at the documentation page http://lucene.apache.org/java/3_4_0/ there's no
link in contrib towards
http://lucene.apache.org/java/3_4_0/api/contrib-facet/index.html
You're right Mihai. I noticed that only after the release and fixed it
yesterday. The link will still be missing from the release page though ...
unless someone knows how to change it now.
Shai
On Wed, Sep 21, 2011 at 2:54 PM, Mihai Caraman wrote:
> at the documentation page http://lucene.apache
Àkos,
have a look at SpanNearQuery. This is what you want.
If you own the 2nd Edition of Lucene in Action have a look at their
examples. It illustrates how to combine them with the classical queries.
Regards,
Em
Am 21.09.2011 13:46, schrieb Akos Tajti:
> Dear List,
>
> for multi term expression
Thanks, I will check SpanNearQuery!
Regards,
Ákos
On Wed, Sep 21, 2011 at 2:20 PM, Em wrote:
> Àkos,
>
> have a look at SpanNearQuery. This is what you want.
> If you own the 2nd Edition of Lucene in Action have a look at their
> examples. It illustrates how to combine them with the classica
PhraseQuery suffices for the stated requirement of boosting when query terms
are closer. A common technique is to incorporate a PhraseQuery with a large
slop factor of the query terms into the query automatically, which implicitly
boosts matching documents when the query terms are closer. A Sp
Hi,
I need some insight into the how the document matching actually happens
and how score is generated.
The basic need driving this desire is to search on multiple fields using
boolean queries, and computing similarity score, for each field for each
hit document so as to device a method to smar
Hello gurus,
Cutting to the chase, I index this: CategoryPath(lvl1,lvl2,lvl3)
I want to group things as deep as lvl3.
Which should be more eficient:
*search for categoryPath(lvl1) to get lvl2 results:
search lvl2 number of times for categoryPath(lvl1,lvl2) to get lvl3 results*
?
or
*search drilldo
Hi
The problem I would like to solve is determining the lucene score of a word in
_a particular_ given document. The 2 candidates i have been trying are
- QueryWrapperFilter
- BooleanQuery
Both are to restrict search within a search space. But according to Doug
Cutting QueryWrapperFilter opti
How is the "title" field indexed? Seems likely it is analyzed in
which case a TermQuery won't match because "list of newspapers in New
York" would be analyzed into terms "list", "newspapers", "new", "york"
assuming things were lowercased, stop words removed etc.
Maybe you need your "word" as Term
Hi Erik,
could you explain why PhraseQuery performs better than SpanNearQuery?
Some time has passed since I read about it, however I think it was
exactly the other way round.
Thanks!
Em
Am 21.09.2011 15:56, schrieb Erik Hatcher:
> PhraseQuery suffices for the stated requirement of boosting whe
SpanNearQuery does more work than PhraseQuery - it keeps track of all matching
spans, whereas PhraseQuery does not. Whether the performance difference will
be relevant depends on your environment and data - so it may not be a big deal
at all.
Erik
On Sep 21, 2011, at 10:44 , Em wrote
Thanks, Erik.
If PhraseQuery does not keep track of all matching spans, how does it do
its work (in comparison to SpanNearQuery)?
Regards,
Em
Am 21.09.2011 19:52, schrieb Erik Hatcher:
> SpanNearQuery does more work than PhraseQuery - it keeps track of all
> matching spans, whereas PhraseQuery d
Thanks for the hints Guys. I implemented the SpanNearQuery approach because we
might need the matching spans information.
Regards,
Ákos
On 2011.09.21., at 20:08, Em wrote:
> Thanks, Erik.
> If PhraseQuery does not keep track of all matching spans, how does it do
> its work (in comparison to
Can you please clarify the question? What do you mean "up to lvl3"?
Let me try with an example: if you index two documents, one with category
[l1, l2, l3] and one with [l1, l2], and you ask to count "l1", you will get
2. If you ask to count [l1, l2, l3] you will get 1, as only one document is
asso
Hi Ian
I am not analyzing the title
Field titleField = new Field("title", article.getTitle(),Field.Store.YES,
Field.Index.NOT_ANALYZED);
Do you think booleanquery is the right approach for solving the problem
(finding lucene score of a word or a phrase in _a_ particular document)?
thanks for
2011/9/21 Shai Erera
> What do you mean "up to lvl3"?
>
"as *deep *as lvl3" :P
In this example, let's look at these lvls as a tree(like n-ary tree) with
root in a unique value at(the top) lvl 1
..one with category [l1, l2, l3] and one with [l1, l2],
All documents have the same depth (of categor
Hi Mihai,
what about having an extra field per level?
doc1: [day:monday], [hour:11pm], [minute:22], [second:00], [year:2011],
[month:October], [calendar day:11]...
This way you do not need to hack and you can easily extend your format
if you want to add new dimensions in future.
I did not work
SpanNearQuery is a different kind of beast than PhraseQuery... it matches when
it's nested SpanQuery's are in proximity. So it is like multiple PhraseQuery's
and checking proximities of those with one another... or proximity with any
other type of SpanQuery.
On Sep 21, 2011, at 11:08 , Em wro
I'm updating my lucene code from 3.0 to 3.4. There's a change in the MLT
interface I'm confused about. I used the MLT.like(InputStream) method. It now
appears I should change to the MLT.like(InputStreamReader, fieldname) method.
Easy enough to create an InputStreamReader from an InputStream.
On Wed, Sep 21, 2011 at 5:17 PM, Scott Smith wrote:
> I'm updating my lucene code from 3.0 to 3.4. There's a change in the MLT
> interface I'm confused about. I used the MLT.like(InputStream) method. It
> now appears I should change to the MLT.like(InputStreamReader, fieldname)
> method. Ea
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