[Zope3-Users] TextIndexNG ranking questions
Hi, I'm currently using TextIndexNG-3.2.0 as well as other zc.catalog indexes in a Zope-3.3.1 application. Indexing several fields as well as external files seems OK, but now I'm facing a few interrogations about searching and ranking : 1. I've created TXNG indexes with a term_frequencies storage and ranking enabled = OK 2. I'm now using hurry.query package to run queries on a set of catalogs ; it's generally OK but my main question are : - how can I use TXNG ranking feature when running a single query against several indexes (actually I have to run queries against several ValueIndex indexes, matching workflow status and publication date, and one or two TextIndexNG indexes -- one for title and another one for content) ? How can I be sure that my results order is matching ranking ?? - does a ranking query generate a numeric value which could be used to display to users the relevance of found results ? Thanks for any help, Thierry Florac -- Chef de projet intranet/internet Office National des Forêts - Département Informatique 2, Avenue de Saint-Mandé 75570 PARIS Cedex 12 Mél : [EMAIL PROTECTED] Tél. : +33 01.40.19.59.64 Fax. : +33 01.40.19.59.85 ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] TextIndexNG ranking questions
--On 15. April 2008 12:51:15 +0200 Thierry Florac [EMAIL PROTECTED] wrote: Hi, I'm currently using TextIndexNG-3.2.0 as well as other zc.catalog indexes in a Zope-3.3.1 application. Indexing several fields as well as external files seems OK, but now I'm facing a few interrogations about searching and ranking : 1. I've created TXNG indexes with a term_frequencies storage and ranking enabled = OK 2. I'm now using hurry.query package to run queries on a set of catalogs ; it's generally OK but my main question are : - how can I use TXNG ranking feature when running a single query against several indexes (actually I have to run queries against several ValueIndex indexes, matching workflow status and publication date, and one or two TextIndexNG indexes -- one for title and another one for content) ? How can I be sure that my results order is matching ranking ?? Using the ranking of TextIndexNG makes basially only sense when you perform a query against the index alone - not in combination with queries against other fields. Andreas pgphuyLLaK9AY.pgp Description: PGP signature ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] TextIndexNG ranking questions
Le mardi 15 avril 2008 à 13:18 +0200, Andreas Jung a écrit : Using the ranking of TextIndexNG makes basially only sense when you perform a query against the index alone - not in combination with queries against other fields. Yes, that's what I thought... :-( So is there an easy way to intersect the results of several distinct queries, so that the results order provided by TextIndexNG and following ranking is kept ?? Thanks, Thierry Florac -- Chef de projet intranet/internet Office National des Forêts - Département Informatique 2, Avenue de Saint-Mandé 75570 PARIS Cedex 12 Mél : [EMAIL PROTECTED] Tél. : +33 01.40.19.59.64 Fax. : +33 01.40.19.59.85 ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] TextIndexNG ranking questions
--On 15. April 2008 13:46:09 +0200 Thierry Florac [EMAIL PROTECTED] wrote: Le mardi 15 avril 2008 à 13:18 +0200, Andreas Jung a écrit : Using the ranking of TextIndexNG makes basially only sense when you perform a query against the index alone - not in combination with queries against other fields. Yes, that's what I thought... :-( So is there an easy way to intersect the results of several distinct queries, so that the results order provided by TextIndexNG and following ranking is kept ?? Intersection is likely possible. However I don't know about the implementation of hurry.catalog or the other related Zope 3 components. Performing two queries and intersecting the results (e.g. given by paths, UIDs or whatever) is basically supported through the various BTree types or Zope or by Python's set module.. Andreas pgp9qefjusFhX.pgp Description: PGP signature ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] TextIndexNG ranking questions
Le mardi 15 avril 2008 à 14:03 +0200, Andreas Jung a écrit : Intersection is likely possible. However I don't know about the implementation of hurry.catalog or the other related Zope 3 components. Performing two queries and intersecting the results (e.g. given by paths, UIDs or whatever) is basically supported through the various BTree types or Zope or by Python's set module.. Intersecting is possible, but BTrees and sets dont support ordering... So I suppose that I have to convert search results to lists and to merge/intersect them manually... Or, given a set (containing final results set intersection) and a list (containing TextIndexNG results, ordered by ranking), is it possible to EFFICIENTLY get items of the set in the order in which they are stored in the list ?? Thanks, Thierry Florac -- Chef de projet intranet/internet Office National des Forêts - Département Informatique 2, Avenue de Saint-Mandé 75570 PARIS Cedex 12 Mél : [EMAIL PROTECTED] Tél. : +33 01.40.19.59.64 Fax. : +33 01.40.19.59.85 ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
