[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: xml search engine?
> There are so many ways this could work out. Any opinions? I'm really no visioner nor technology guru, but I thought to write this encouraged by your call for opinions. Here's mine. >There is a problem I see for xml search engines. How are they going to >cope with all the various DTD's? I'm not entirely sure search engines have to cope with them. I have no idea whatsoever of the current solutions, but I think you could specify some simple form of search like (don't care about my mangled and extended examples): company a: //drug_component/text()=~!benometr.*sinytodi! > Will we have lots of small search engines searching for > information in all reinforced_concrete_supplier.dtd xml files it can > find and another for all medicine.dtd info? Will there be a few > standard elements in most DTD's to comply to some emerging behaviour > of all search engines? Hopefully not, while I can see that small search engines might be more customizable for tricky tasks or automation. Since you raised drug business as an issue, I think it won't take too much time nor too long before some DrugRepositoriesAreUs.com will make proposition for common tags to be used (probably superset of most widely used). And then they'll present Schema with equivclasses for DTDs not conforming with their solution. So some other person hunting for same information could write company b: //drug_components/chemical/*[@longname.contains(|sinytodi|)] Equivclasses would then map company B's XML chemical childs's longname attribute to be comparable just like company A's drug_component text content. So both queries A and B will show same (about same) result set. My guess is that engines have to have interface for DTD producers or registers to feed and update schemas. And if it's not possible to develop enough powerful xpath and schema, one can write some XSL to transform company B's document to specialized form designed for good and easy searching. I don't believe we'll see consensus on these issues any time soon. And even my short examples show it quite clearly that those queries are well beyond average user. So I could imagine good use for wizard-technology, which then generates queries behind the scenes. No one writes SQL to current search machines either, while that might provide interesting possibilities. For some particular, very common search, like finding all drugs containing some particular chemical, one could just present textbox where user can write chemical names. I guess producing simple yet powerful user interfaces for avarage users will be interesting and hard thing to do. As long as XML-searching is considered to give advanced features over pure text based HTML-indexes nobody will be disappointed. They will have some blue moments who think XML-searchers will turn present engines to the incarnation of net oracle replying correct answer backed up with source document list for every question raised. - Aleksi the future is under construction -----Original Message----- From: Reinout van Rees [mailto:rr@c...] Sent: den 29 mars 2000 11:43 To: xml-dev@x... Subject: xml search engine? On Tue, 28 Mar 2000, Jean Marc VANEL wrote: > I know the Xyleme project at www.inria.fr that is starting to > develop an XML-aware Web search engine. I couldn't find it on their website, do you have a pointer to information? This is *very* interesting! > But it is clear that such products would be of the uttermost > importance to XML architectures, because of the flexibility that it > provides: no need to register services and data, the XML search > engine finds them anyway. There is a problem I see for xml search engines. How are they going to cope with all the various DTD's? They ARE going to cope, but what will be the result? Will we have lots of small search engines searching for information in all reinforced_concrete_supplier.dtd xml files it can find and another for all medicine.dtd info? Will there be a few standard elements in most DTD's to comply to some emerging behaviour of all search engines? There are so many ways this could work out. Any opinions? greetings, Reinout -- Reinout van Rees => R.vanRees@c... +31-15-278-5456 "There's good and evil in all of us. It's up to you alone which to follow" - Geoff Mann *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ *************************************************************************** *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ ***************************************************************************
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