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AHDIT: Ad Hoc Data Interoperability Tool

AHDIT: Ad Hoc Data Interoperability Tool. Dr. Bruce A. Scharlau Dept. of Computing Science University of Aberdeen scharlau@csd.abdn.ac.uk. Outline. The Problem Potential Solution XML, XML Schema & RDF AHDIT Development Future Development Conclusion. The Problem. Sept 11 2001

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AHDIT: Ad Hoc Data Interoperability Tool

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  1. AHDIT: Ad Hoc Data Interoperability Tool Dr. Bruce A. Scharlau Dept. of Computing Science University of Aberdeen scharlau@csd.abdn.ac.uk Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  2. Outline • The Problem • Potential Solution • XML, XML Schema & RDF • AHDIT Development • Future Development • Conclusion Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  3. The Problem Sept 11 2001 Exchange data on: Suspects Victims Potential Victims Philippines France NYPD Washington DC UK 50 Other States How can so many different organisations exchange information? Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  4. Current Practice Word Doc Word Doc • Exchange MS Word documents: • 1. Enter data into own system • 2. Export report to other party • 3. Recipient then enters data into own system • Potential for error as data re-entered • Requires more clerical staff • Creates a bottleneck at the start of investigations. • The problem occurs when common data procedures and agreements are not already present between the parties involved. Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  5. Current State of Affairs • Organisations have problems communicating internally as evidenced by knowledge management applications • problems finding experts in organisations • problems sharing information in organisations • Organisations communicate externally even less well • Governments implementing interoperability progammes • Some governments setting standards for XML use with XML Schema. • UK & US working towards standard XML policies Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  6. Potential Solution • Semantic Web offers solution • Give meaning to and extending the WWW • Machine processable, not human readable • Built upon structured collections of data and inference rules • Use of XML and related languages • AHDIT builds upon the Semantic Web: • use structured data of the XML and XML Schema to create RDF models that can be compared • work with standard practices of organisations Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  7. Semantic Web Layers • AHDIT works with XML, XML Schema and RDF, RDF Schema layers • XML & XMLS are being deployed by governments today • AHDIT lifts this to next level of RDF & RDFS Source: Tim Berners Lee http://www.w3.org/2000/Talks/1206-xml2k-tbl/slide10-0.html Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  8. XML- Extensible Markup Language • W3C Standard of human readable text • Provides structured content - still need to know what citizen means <egif:CitizenNameStructure> <egif:CitizenNameTitle>Mr</egif:CitizenNameTitle> <egif:CitizenNameForename>Jonathan </egif:CitizenNameForename> <egif:CitizenNameSurname>Doe </egif:CitizenNameSurname> <egif:CitizenNameRequestedName>Jon </egif:CitizenNameRequestedName> </egif:CitizenNameStructure> Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  9. XML Schema • The XML Schema file (xsd) defines whether an XML document is valid or not. • The XML file could also be labelled as an instance of an XSD file. <xsd:complexType name="CitizenNameStructure"> <xsd:sequence> <xsd:element name="CitizenNameTitle" type="egif:CitizenNameTitleType" minOccurs="0" maxOccurs="unbounded"/> <xsd:element name="CitizenNameForename" type="egif:CitizenNameForenameType" minOccurs="0" maxOccurs="unbounded"/> <xsd:element name="CitizenNameSurname" type="egif:CitizenNameSurnameType"/> ... </xsd:sequence></xsd:complexType> Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  10. RDF- Resource Definition Framework • Aimed at providing information about meta-data for WWW resources. • AHDIT builds this up from the XML Schema using Jena … <rdf:Description rdf:about='citizen'> <NS0:CitizenNameSurname rdf:resource='#CitizenNameSurname'/> …<NS0:CitizenName rdf:resource='#CitizenName'/> </rdf:Description> </rdf:Description> <rdf:Description rdf:about='http://www.w3.org/2000/01/rdf-schema#Class'> <NS0:CitizenNameSurname>:CitizenNameSurnameType </NS0:CitizenNameSurname> …</rdf:Description> …<rdf:Description rdf:about='#CitizenNameSurname'> <rdfs:label>CitizenNameSurname</rdfs:label> … </rdf:Description> … Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  11. AHDIT Development The Goal: Direct application to application communication State A State B Application Application Export report Import or type report Email or post report We want to move from the email route to the direct route Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  12. Phase 1 Solution • Mixed Method : • export report • send to second party • convert to XML • run through AHDIT • import modified report DB 1 App 1 App 2 DB 2 Export report Import report State A State B Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  13. AHDIT Phase 1 Solution • Application takes in two XSD files, and the new XML file to be integrated • User determines what is changed in ‘RDF not B’ to create ‘Modified State A XML’ file. State B RDF State B XSD AHDIT Modified State A XML State A XSD RDF not B State A XML State A data ready For import into State B data State A RDF Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  14. Future Development • Phase 1 - parse and compare the documents • Phase 2 - establish community methods • local server with knowledge of partner organisations • maps to convert to their data structures stored • Phase 3 - develop agent facilities to automate methods • Aim towards less human intervention • Security needs to be incorporated • Ontology tools to manage knowledge and the data • Language tools to manage diverse users and contente • German vs, French, vs English issues, etc • Communication method between parties • Possibly RPC or SOAP for the first two phases • Probably need agent communication languages for phase 3 Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  15. Possible Phase 3 Solution App 3 AHDIT AHDIT DB 3 XML XML A 2 DB 1 App 1 App 2 DB 2 Negotiate A 1 AHDIT - create app to integrate data into current systems - would need search, find and bind procedures State A State B Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

  16. Summary • Organisations need to exchange information • Current methods are laborious, repetitious, and error prone • Movement towards XML & XML Schema • Today methods and concepts are available to allow for ad hoc interoperability between applications and organisations Dr. Bruce A. Scharlau, AHDIT, ES2002 E-Business Workshop

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