RE: Use the lucene for searching in the Semantic Web.

Hi! (1) I'm working on a similar problem, but based on MPEG-7 Semantic Description Graphs. I've already a prototype for pakth based matching within Lucene integrated in my sf project Caliph Emir (http://caliph-emir.sf.net). I've already adapted the approach to an ontology, which had to be

RE: :intersection of two hits objects:

Thanks for your valuable suggestions to me.. I am very much glad to you for this response. Now I understood where I am going wrong so I will try use the first solution given by you Thanks Ravi Kumar Jaladanki -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On

Re: :intersection of two hits objects:

On Jan 19, 2006, at 2:57 AM, Ravi wrote: Can u please tell me how to use this query in loop because he can refine the search n number of time so how to maintain all the queries in QueryFilter and use of them , Please help me I need very urgent. If you're continually refining queries, I

Re: Use the lucene for searching in the Semantic Web.

For some semweb + full-text searching real-world examples, also look to the SIMILE project - http://simile.mit.edu/ They have integrated Lucene into PiggyBank and Longwell. Erik On Jan 18, 2006, at 9:30 PM, xing jiang wrote: Hi, I have done some surveys about the information

Re: Use the lucene for searching in the Semantic Web.

Hi Mathias, Can you give more details? Is your application for text + ontology, or ontology only? regards jiang xing On 1/19/06, Mathias Lux [EMAIL PROTECTED] wrote: Hi! (1) I'm working on a similar problem, but based on MPEG-7 Semantic Description Graphs. I've already a prototype for

Lucene Logo? (high resolution)

Hello, I've created an Semantic Desktop application using Lucene. For a presentation I'd like to create a poster. Unfortunately I haven't found any high resolution version (or vector graphic) of the Lucene logo. At http://svn.apache.org/repos/asf/lucene/java/trunk/docs/images/ only a few

AW: Use the lucene for searching in the Semantic Web.

Its for both, onto + contents (Word, Pdf, PPT, all time the same candidates). The main disadvantage of this approach is that main nodes in the ontology have to be defined. Imagine following use case: An ontology describes a companies content and knowledge management system. Persons,

Re: Use the lucene for searching in the Semantic Web.

Hi, I am not sure whether my understanding is correct. In your application, A concept document first should be defined as a class in the ontology? Then, each document is an instance of this class. It uses its contents as its features. Also, the related concepts will be added into the feature

AW: Use the lucene for searching in the Semantic Web.

-Ursprüngliche Nachricht- Von: xing jiang [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 19. Jänner 2006 13:11 An: java-user@lucene.apache.org Betreff: Re: Use the lucene for searching in the Semantic Web. Hi, I am not sure whether my understanding is correct. In your

Re: Use the lucene for searching in the Semantic Web.

On 1/19/06, Mathias Lux [EMAIL PROTECTED] wrote: -Ursprüngliche Nachricht- Von: xing jiang [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 19. Jänner 2006 13:11 An: java-user@lucene.apache.org Betreff: Re: Use the lucene for searching in the Semantic Web. Hi, I am not

Limiting hits?

Hi, I am currently looking for a way to limit the amount of Hits which are returned by a Query. What I am doing is following: Searcher s = ...; Query q = QueryParser.parse(..., ..., new StandardAnalyzer()); searcher.search(query); We have approximately 10 million products in our Index and of

AW: Use the lucene for searching in the Semantic Web.

Actually, my problem is that, for instance, for a document d, Its feature vector may be keywords and concepts. I don't know how to weight the two items. Right now, i used a stupid method, given a document d, i can obtain a rank D based on keyword method. Also, it is annotated with a

Re: Use the lucene for searching in the Semantic Web.

On 1/19/06, Mathias Lux [EMAIL PROTECTED] wrote: Actually, my problem is that, for instance, for a document d, Its feature vector may be keywords and concepts. I don't know how to weight the two items. Right now, i used a stupid method, given a document d, i can obtain a rank D

non-standard query

I've the following problem: I've a big number of documents indexed. Suppose that the search query contains 20 terms. It is necessary to find all documents which contains at least 5 terms from search query. Is it possible to implement? If yes, what problems may arise during the solving of

What's the differents between QueryParser and Query

Hi all! I've a question about the lucene search method. What is the different between a search with the class lucene.queryParser.QueryParser and the class lucene.search.Query and their subclasses? For example: With the WildcardQuery I can search for * at the beginning of a term, but not with

Re: non-standard query

Check out minNrShouldMatch in BooleanQuery in the latest lucene version (1.9 dev version in subversion). -Yonik On 1/19/06, Anton Potehin [EMAIL PROTECTED] wrote: Suppose that the search query contains 20 terms. It is necessary to find all documents which contains at least 5 terms from search

AW: Use the lucene for searching in the Semantic Web.

Hi, Actually, my problem is that, for instance, for a document d, Its feature vector may be keywords and concepts. What do you exactly mean by features vector? You are referring to the predicate - object pairs, connected to one subject node, don't you? I don't know how to weight the two items.

Analyzer

Hi, Is there a way to get the unstemmed term out of the lucene index, or do I have to change the analyzer, to save the original term and the stemmed one? Thank, Klaus - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional

Re: Analyzer

Yonik, You're right, it's unecessary unless you want to search on both (so index both), as you said in your other message SL Yonik Seeley a écrit : On 1/19/06, Stéphane Lagraulet [EMAIL PROTECTED] wrote: Hi, You'd better use 2 fields, one analysed and not stored, and the other one only

Re: Use the lucene for searching in the Semantic Web.

On 1/20/06, Klaus [EMAIL PROTECTED] wrote: Hi, Actually, my problem is that, for instance, for a document d, Its feature vector may be keywords and concepts. What do you exactly mean by features vector? You are referring to the predicate - object pairs, connected to one subject node, don't

data size limitation?

hey, is there a max amount of data (in gigabytes) where lucene's performance starts to deteriorate i tested with about 2 giga on two instances (2 ram dirs using the parallelmultisearcher) and performance was great, however i think i will need to support about 10-15 times as

RE: data size limitation?

Lucene is aimed for ~10M document indexes on single CPU, Anyway I tried till 20 GB and believe me lucene holds pretty good. Manish Chowdhary [EMAIL PROTECTED] -Original Message- From: z shalev [mailto:[EMAIL PROTECTED] Sent: Thursday, January 19, 2006 10:52 PM To:

Re: Limiting hits?

I'm certain how the Hits class works, but I've never used Lucene with RMI before. I suppose of one does it incorrectly, every hit could end up going across the network (definitely not what you want). Are you using RemoteSearchable on the server side? -Yonik On 1/19/06, Daniel Pfeifer [EMAIL

Re: What's the differents between QueryParser and Query

On Jan 19, 2006, at 10:01 AM, [EMAIL PROTECTED] wrote: I've a question about the lucene search method. What is the different between a search with the class lucene.queryParser.QueryParser and the class lucene.search.Query and their subclasses? QueryParser is a Query factory. It takes a

Re: information theory based expanded query term boosting

what articles you have read? i work in automatic query expansion and automatic thesaurus generation, and i use lucene for my tests, but, by now, i don't have excellent results. In a few days i will have results based in this method: Concept Based Query Expansion (1993) Yonggang Qiu Department

languages files

Hi, I begin working with lucene and need few explanations to do what i want, thanks for your helpful answers. I have to add lucene into a java application and I have two targets: - To enable search throw different types of files, like MS Word, PDF or Excel files. I read that each type of

Re: information theory based expanded query term boosting

Hi Jose, There are several papers on that topic. But the one which particularly interested me was An information-theoretic approach to automatic query expansion Claudio Carpineto, Renato de Mori, Giovanni Romano, Brigitte Bigi ACM Transactions on Information Systems (TOIS)

notification of active IndexSearchers when index is modified?

I've got a daemon process which keeps an IndexSearcher open on an index and responds to query requests by sending back document identifiers. I've also got other processes updating the index by re-indexing existing documents, deleting obsolete documents, and adding new documents. Is there any way

Re: notification of active IndexSearchers when index is modified?

Bill Janssen wrote: I've got a daemon process which keeps an IndexSearcher open on an index and responds to query requests by sending back document identifiers. I've also got other processes updating the index by re-indexing existing documents, deleting obsolete documents, and adding new

Re: notification of active IndexSearchers when index is modified?

Bill, I don´t know of any automatic method to get notified of index changes. One option is that the process that updates the index send a signal to the search deamon. Or, the search deamon may have a thread that periodically checks for new indexes (I think of two possible checks: check the

Storing large text or binary source documents in the index and memory usage

I would like to store large source documents (10MB) in the index in their original form, i.e. as text for text documents or as byte[] for binary documents. I have no difficulty adding the source document as a field to the Lucene index document, but when I write the index document to the index I

Re: Why we use Lucene for Database search like Oracle / Sybase ?

Thanks for the nice summary. Couple of other things that comes to my mind are: 1. Not columns are indexed in a database; searching on a non-indexed field would be very expensive. 2. Some dbs do support free form indexes but it is an offline index. Good thing is that regular sql can be used to

Re: Lucene Logo? (high resolution)

Hi Dough, that's exactly what I'm looking for! Thanks very much, Daniel Doug Cutting wrote: Daniel Rabus wrote: I've created an Semantic Desktop application using Lucene. For a presentation I'd like to create a poster. Unfortunately I haven't found any high resolution version (or vector