SemNum

1. SemNum semantic numbers on the web The PHOAF Prototype for Integrated ENUM and FOAF Queries • The PHOAF prototype allows three different input parameters to start a query: • Start ENUM DNS NAPTR query with given phone number – the result is a list of URIs and services of the queried phone number’s owner • Start FOAF RDF file lookup with given web URL – the result is the exact location of a foaf.rdf file • Start FOAF RDF file parsing with given location of foaf.rdf file – the result is data available from the foaf.rdf file VoIP Called Party Information Phonebook Contact Network • Application example utilising the PHOAF prototype during VoIP call set-up returning information on called party based on data found in ENUM and FOAF, respectively. • PHOAF application spicing up a standard personal phonebook (directory) typically found in mobile phones or personal digital assistants by means of additional information available in ENUM and FOAF. Trust in ENUM and FOAF • Contact Details • Kurt Reichinger[reiching@dbai.tuwien.ac.at] • Robert Baumgartner[baumgart@dbai.tuwien.ac.at] • Gerd Reichinger[gerd.reichinger@brz.gv.at] • SemNum Project Website • http://www.dbai.tuwien.ac.at/proj/semnum • Vienna University of Technology • Computer Science Department • Institute of Information Systems • Database and Artificial Intelligence (DBAI) Group URI from ENUM URI from FOAF • Introduction of trust level rating for data available both in ENUM and FOAF. • ENUM data qualifies for trust considerations as it is used for all-day communication with the opportunity of short-term data up- date. „Match?“ True False Trust Level  Trust Level 