Semantic Webは情報検索をどう変えるか?

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Transcription:

E-mail: htsuda@jp.fujitsu.com URL: http://www.net.intap.or.jp/intap/s-web/

2 1990 1995 2000 ICOT EDR?. Quixote (DOOD) Telescript (mobile Agent) (Web) Web XML Web SemWeb

3 Semantic Web RDF RDF, Semantic Web : RSS, ODP, TAP, KM Semantic Web :, Trust, Agent, Semantic Web Mining

4 Semantic Web Web T.Berners-Lee Web (1998-) : W3C ), DARPA DAML (2000-) : EU-IST, : : WWW2002, W3C track

5 Web ( ) Web 3.2 (98.4) 8 (99.7) 10 (00.1) 21 (00.7) 40? (01 ) XML, 50% HTML DAML XML (by Mury Burke, SWMU2, 2001.11 http://www.daml.org/meetings/2001/11/swmu2/) 0% 2000 2005 2010

6 Web OWL, DAML+OIL(W3C ) RDF Schema (RDF Vocabulary Description Language) (W3C ) RDF model & syntax (1999.2 W3C ) (WWW2002, W3C track http://www.w3.org/) RDF = Resource Description Framework

7 DublinCore MIReG, e-gmf, AGSL, CDF RSS0.9 RSS1.0 SGML XML RDF RDFS DAML OWL DAML+OIL DARPA DAML-S OIL EU-IST On-To-Knowledge TopicMap XTM

RDF (Resource Description Framework) 8 XML, N3 cf. XML W3C DTD OASIS RDF (URI ) cf. HTML Meta, PICS cf. ODP, RSS, PICS

9 RDF (model) (,, ) : URI(Uniform Resource Identifier) cf. TopicMap (bag, seq) http://www. intap.or.jp/s-web/intro.html Dublin Core creator (dc:creator) http://purl.org/dc/elements/1.1/creator shimizu@intap.or.jp E-mail age 55

10 RDF (syntax) XML URL / <rdf:rdf> <rdf:description about= http://www.intap.or.jp/s-web/ > <dc:creator> </dc:creator> </rdf:description> </rdf:rdf> <dc:creator> <rdf:description about= http://ww.intap.or.jp/id/1716/ > <v:name> </v:name> <v:email>shimizu@intap</v:email> </rdf:description> </dc:creator> or <dc:creator rdf:resource= http://ww.intap.or.jp/id/1716/ v:name= v:email=shimizu@intap/>

11 RDF N3 http://www.w3.org/2000/10/swap/primer.html <#pat> <#child> <#al>. (Al Pat ) <#pat> has <#child> <#al>. <#al> is <#child> of <#pat>. <#pat> <#child> <#al>, <#chaz>, <#mo>; <#age> 24 ; <#eyecolor> blue. <> <http://purl.org/dc/elements/1.1/creator>. namespace @prefix dc: <http://purl.org/ec/elements/1.1/>. <> dc:creator. creator

12 RDF (RDFS) RDF Vocabulary Description Language (range, domain) creator Work rdfs:range rdfs:subpropertyof rdfs:subclassof author rdfs:range Document rdfs:domain Person RDFS rdfs:type rdfs:type rdfs:type RDF http://intap.or.jp/s-web/ author

13 OWL OIL: EU, IST On-To-Knowledge (-2001) DAML (DARPA Agent Markup Language) 2000- DAML-ONT DAML+OIL OWL (Ontology Web Language) 2002.7 W3C DAML+OIL (OWL-Full) OWL-DL (Description Logic), OWL-Light (category, catalogue)

14 OWL RDFS ( ) : exhaustive enumeration, intersection, union, complement equivalentclass, disjointwith equivalentproperty, inverseof : TransitiveProperty : SymmetricProperty cardinality: mincardinality, maxcardinality (Individual) sameindividualas, diferentfrom, Alldifferent

15 SemanticWeb TopicMap Topic Map (XTM=XML Topic Map) 1991 SGML, 2000 ISO, TopicMaps.org OASIS : EAI(Enterprise Application Integration) e-commerce, KM Semantic Web XTM : RDF+RDFS+OWL : SGML, XML URI subject indicator/subject address cf. L. M. Garshol, "Topic maps, RDF, DAML, OIL -- A Comparison", http://www.ontopia.net/topicmaps/materials/tmrdfoildaml.html

Semantic Web 16 INTAP Web [Web ] SFC), : W3C NEC,,, NTT,,, Web [AI ] AI ) : Ontology. AI NII) : AI ), : XML XML Semantic Web WG [XML ] ) :, XML )

17 Semantic Web vs. Search Engin Optimizer Web AI The Semantic Web W3C KM Web XML Topic Map EAI e-learning, DAM, DRM

18 Semantic Web Adobe XMP extensible Metadata Platform : PDF RDF RSS : (Web ) 2003/2/16 Google Pyra Labs (blogger.com ) W3C/Stanford TAP RSS Open Directory Project / Dublin Core, e-learning

19 Semantic Web 80 (?) 40 (?) 10-20 Web : 8 3.2 ( ) 98 99 2000 01 02 HTML HTML ( ), ( ) ( )

20 : : ( librarian ) Web etc. etc. Semantic Web

21 : AND : Google ( )

22 ( ) = = = = = 30 =bag of words

23 2 Date= 2002-10-23 DOW=Wed Close= Wed Close= Sat,Sun Open= Mon,Wed Close= 1st Wed, 3rd Wed Open, Close OpenDate= 2002-11-1 ( ) 1,3 2002/11/1 =bag of words

24 POINT= ( 140.50, 35.44) Address= Address_Kyoto= Address= 3 Address= 8 ( ) : 3-5-6 : =bag of words

Dublin Core ( ) 25 ( ) 15 : (Dublin Core Metadata Element Set DCMES) Title, Creator, Subject, Description, Publisher, Contributor, Date, Type, Format, Identifier, Source, Language, Relation, Coverage, Rights 1995 15 DCMI (Dublin Core Metadata Initiative) http://dublincore.org/

26 / DCMES ( ) e-gms (e-government Metadata Standard) EU MIReG (Managing Information Resources for e-government) OIO-metadata (Offentlig Information Online) IPSMS ( ) AGLS (Australian Government Locator Service) NZGLS (New Zealand GLS) ( ) GILS (Government Information Locator Service) cf.

27 DC(Dublin Core), RSS, MPEG7 MIReG, e-gms, AGLS, e-gov E-learning LOM(Learning Object Metadata), SCORM, LIP XMLNews, NewsML, TV Anytime, ARIB,. MusicBrainz, G-XML, JMP, PICS P3P cidf (Content ID Forum),.. RDF RDF

: 28 VS HTML ontology ) ( ) : (, AI )

29 Semantic Web 1. RSS (RDF Site Summary) 2. ODP (Open Directory Project) 3. TAP (Stanford ) 4. KM

( 1) RSS(RDF Site Summary / Rich Site Summary) http://web.resource.org/rss/1.0/spec ( ) URI,, (syndication ) http://rss-jp.net/x/ Weblog RSS : ( ), one source, multi use, ( ) 30 RSS

31 ( 2) Open Directory Project ODP: 8000 Yahoo Web Netscape, Google ( ) http://dmoz.org/ ODP RDF URL URL (dc:title, dc:description) Web RDF princeton Wordnet RDF RDF cf. A. Eberheart, Survey of RDF data on the Web, 2002 http://www.i-u.de/schools/eberhart/

32 ( 3) TAP (Stanford ) Semantic Web http://tap.stanford.edu/ Stanford KSL + IBM (Guha) + W3C TAP-KB : Music, Movie, Author, Sports,. ODP Cyc: = TAP-KB: Cyc, UpperOntology Yo-Yo-Ma TAPache: RDF GetData TAP Semantic Search (Activity Based Search): (Google)

33 TAP KB (Semantic Search) Miller Eric Miller http://tap.stanford.edu/w3c.html

34 TAP ABS (Activity Based Search) Yo-Yo-Ma : TAP-KB ( ) http://tap.stanford.edu/tap/ss.html

35 TAP-KB W3C http://www.w3.org/2002/talks/www2002-w3ct-swdemo-em/ Query XHTML ( ) RDB HTML RDF (XSLT) RDB schema RDF (dbview) TAP-KB (RDF) Semantic Search - - (WG,, )

36 ( 4) KM Swill Life 2000-2002 EU-IST, On-To-Knowledge OIL DB Haystack (MIT) RDF http://http://haystack.lcs.mit.edu/ Know Who ( ) etc., Semantic Web WorkWare++, 2003

37 (,,, ) (= ) (= ) (= ) RDF*/XML

38 ( * ) Know Who (, ) ( /News/Web ) -XML - (text mining) (, )

39 Know Who= + :: XML XML

40 Semantic Web : : (DAM) (DRM) EAI (Enterprise Application Integration) KM, : P2P Web (B2B) Semantic Web Services, Semantic Web enables Web Services (SWWS) e-learning LOM Web RDF

41 1. Semantic Web 2. (Semantic) Web 3. 4. Semantic Web

42 [Topic] SW cf. Web UDDI Dublin Core Metadata Harvesting (OAI) Web DAML Crawler HTTP (Web Side Story, 2001.9) = 85000 Push (smart pull) : RSS Weblog RDFWeb (http://rdfweb.org/ Web ring

[Topic] Web HTML META? META Internet: Tim Berners-Lee Trust RDF? Web PKI Google PageRank, PGP mail (Key Free Trust, http://www.w3.org/2002/03/key-free-trust.html) 43

[Topic] SW Telescript(by J. White, General Magic place,1995) cf., Telescript ASCII, 1996 ( :-) ( ) 44 Agent

45 ( ) Semantic Web +Web Services (Proof) Trust cf. Telescript

46 [Topic] Semantic Web etc. etc. (POS, ) Text (mail,, ) rule,, etc. Ontology? Web Web Semantic Web Semantic Web

Web / 47 Web Web, Web, 2002 Web ( URL) Web mining /

48 ( )toto ( ) Web 1 ( 1 )

Web...... NEC. NEC nec.co.jp. www.nec.co.jp............ 49 nec.co.jp URL

50 http://www.panahome.co.jp ( ) PANAHOME http://www.rkb.inf.ne.jp RKB RKB RKB RKB ( ) RKB (TBS ) RKB (1278KHZ) Web Semantic Web

51 Semantic Web RDF, RSS (OWL) Semantic Web ( ) RDF DB Query ODB / Web

SemWeb 52 3/7 NEDO 3/10,11 J. Hendler http://www.ei.sanken.osaka-u.ac.jp/ss/ 3/12 SWAFT (SEMANTIC WEB FOUNDATIONS AND APPLICATION TECHNOLOGIES), http://www-kasm.nii.ac.jp/swfat/ 3/25-27 ( ) : Web Web *3,

53 URL W3C http://www.w3.org/2001/sw/ DAML http://www.daml.org/ Dublin Core Metadata Initiative http://dublincore.org/ INTAP Web : http://www.net.intap.or.jp/intap/s-web/ ( ) Web Web Kanzaki http://www.kanzaki.com/docs/sw/