Hi Nick, For implementing Boolean OR queries, you will have to write your own plugin. Look at the code of query-basic and query-site for example code of how to write a new query plugin.
Look at the javadocs of org.apache.lucene.search.BooleanQuery for details. By making a query as non-required, you will get an OR behavior. [The API for adding a new query term is add(Query query, boolean required, boolean prohibited). So you will specify 'false' for required]. For your second question, you might want to start by looking at this email: http://mail-archives.apache.org/mod_mbox/jakarta-lucene-dev/200309-incomplete.mbox/[EMAIL PROTECTED] Regards, Praveen. On 7/11/05, Nick Rowlands <[EMAIL PROTECTED]> wrote: > Hi > > I am at the start of my uni dissertation on interactive query expansion. At > the mo I am using an Ajax framework and Wordnet to suggest alternative or > additional search terms based on the user's original query. The webpage is > updated as the user types. I now which to integrate my system into a search > engine and Nutch seems suitable. I have successfully completed the whole-web > crawl tutorial. I have two questions: > > 1. I wish to formulate a boolean query using the OR operator to search on > all of the alternative search terms Wordnet has suggested. I have found no > documentation neither in the Wiki or in the mailing list archive. Are > boolean queries possible in Nutch? > > 2. How do I extract all index terms from nutch, and possibly their tf/idf > score too? I inted to use this information to have a function similar to > Google Suggest, in that as you type, suggested terms will appear based on > terms actually in the index. I would want to put the terms and their > associated score into a database like postgresql. > > Any pointers would be much appreciated! > > Regards, > Nick. > >
