QueryParser and stopwords

2004-01-20 Thread Morus Walter
Hi, I'm currently trying to get rid of query parser problems with stopwords (depending on the query, there are ArrayIndexOutOfBoundsExceptions, e.g. for stop AND nonstop where stop is a stopword and nonstop not). While this isn't hard to fix (I'll enter a bug and patch in bugzilla), there's one

Query Term Questions

2004-01-20 Thread Terry Steichen
1) Is there a way to set the query boost factor depending not on the presence of a term, but on the presence of two specific terms? For example, I may want to boost the relevance of a document that contains both iraq and clerics, but not boost the relevance of documents that contain only one

Re: mergeFactor and maxMergeDocs

2004-01-20 Thread Doug Cutting
Chong, Herb wrote: what effect and what recommendations are valid for Lucene 1.3? Same as always: use the defaults and call optimize() only when you know you won't be changing the index for a while. If you have lots of RAM, increasing minMergeDocs may increase indexing speed, but raising it too

Re: IndexReader.document(int i)

2004-01-20 Thread Doug Cutting
Nicolas Maisonneuve wrote: i would like to know in the IndexReader.document(int i) what is this number i ? if the the first document is the oldest document indexed and the last the youngest ? (so we can sort by date easyly) ? Yes, documents with lower numbers were indexed earlier. As

Re: Ordening documents

2004-01-20 Thread Doug Cutting
Yes, this is correct. Peter Keegan wrote: So they are sorted by reverse document number. Is this the 'external' document number (the one that is adjusted for the segment's base)? If so, then this means that documents with equal score are returned in the order in which they were added to the

Re: Gettting all index fields of an index

2004-01-20 Thread Doug Cutting
Try calling IndexReader.getFieldNames(). Karl Koch wrote: How can I get a list of all fields in an index from which I know only the directory string? Karl - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands,

RE: mergeFactor and maxMergeDocs

2004-01-20 Thread Chong, Herb
my job is to measure and benchmark for capacity planning purposes. that means knowing how much room i have to work with on the tuning knobs. Herb... -Original Message- From: Doug Cutting [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 20, 2004 12:18 PM To: Lucene Users List Subject:

Re: setMaxClauseCount ??

2004-01-20 Thread Doug Cutting
setMaxClauseCount determines the maximum number of clauses, which is not your problem here. Your problem is with required clauses. There may only be a total of 31 required (or prohibited) clauses in a single BooleanQuery. If you need more, then create more BooleanQueries and combine them

Re: difference in javadoc and faq similarity expression

2004-01-20 Thread Doug Cutting
Nicolas Maisonneuve wrote: in the Similarity Javadoc score(q,d) =Sum [tf(t in d) * idf(t) * getBoost(t.field in d) * lengthNorm(t.field in d) * coord(q,d) * queryNorm(q) ] in the FAQ score_d = sum_t(tf_q * idf_t / norm_q * tf_d * idf_t / norm_d_t * boost_t) * coord_q_d In FAQ | In Javadoc 1 /

Exception thrown from IndexFiles..help!

2004-01-20 Thread othman el moulat
Hi guys! i just downloaded the lucene software and start the tutorial simple = demo... i tried to execute the IndexFiles.java on a NetBeans envirement on = Windowx xp platform... i replaced args[0] with the path: C:\\lucene-1.2\\src but i have the = following exception: caught

Lucene search result no stable

2004-01-20 Thread Ardor Wei
Hi, experts, Our application pulls data out of DB and write as lucene document every 5 minutes. We use a loop to keep updating document. But we only use 1 writing thread and always closes IndexWriter once we finish writing. Unfortunately, we always got IOException and FileNotFoundException ( I