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Ontolog Series on "Database And Ontology" (Session-11) - Thu 18-Oct-2007

  • Invited Speakers: Dr. Zhe (Alan) Wu, a Principal Member of Technical Staff from Oracle's Database Semantic Technologies Group at their New England Development Center.
  • Title: "A Scalable RDBMS-Based Inference Engine for RDFS/OWL"

Conference Call Details

  • Date: Thursday, October 18, 2007
  • Start Time: 10:30am PDT / 1:30pm EDT / 6:30pm BST / 17:30 GMT/UTC
  • Expected Call Duration: 1.5~2.0 hours
  • Dial-in Number:
    • Direct call from from Skype: +990008275823120
    • When calling in from a phone, use Conference ID: "5823120#"
    • from a US telephone (US): +1-605-475-8590 (South Dakota, USA)
    • from Europe, call:
      • Belgium 070-35-9989
      • France 0826-100-277
      • Germany 01805-00-7649
      • Ireland 0818-270-034
      • Italy 0848-390-175
      • Switzerland 0848-560-195
      • UK 0870-738-0763
    • callers from other countries please dial into either one of the US or European numbers
  • Shared-screen support (VNC session) will be started 5 minutes before the call at: http://vnc2.cim3.net:5800/
    • view-only password: "ontolog"
    • if you plan to be logging into this shared-screen option (which the speaker may be navigating), and you are not familiar with the process, please try to call in 5 minutes before the start of the session so that we can work out the connection logistics. Help on this will generally not be available once the presentation starts.
    • people behind corporate firewalls may have difficulty accessing this. If that is the case, please download the slides below and running them locally. The speaker will prompt you to advance the slides during the talk.
  • Please note that this session will be recorded, and the audio archive is expected to be made available as open content to our community membership and the public at-large under our prevailing open IPR policy.

Attendees

Background

This is the 11th event of the "Database and Ontology series" of talks and discussions, during which this community will be exploring the landscape, issues and interactions between databases and ontologies.

This is a community-driven set of activities, and is probably long overdue. On 15-Aug-2006, Tatiana Malyuta (who just joined the community after participating at our 23-Jul-2006 face-to-face workshop at Stanford, brought up her request for the Ontolog Forum to delve into the subject of "Database and Ontologiy." An almost unprecedented flurry of online responses were received from the community. It was decided that we could systematically pursue the subject by mounting a mini-series on the matter at hand.

A planning meeting for what has started out as a mini-series took place on 31-Aug-2006. Matthew West was invited to champion the effort, and a "Program & Technical Advisory Team" was formed, comprising Matthew West (Lead), Adrian Walker, Atilla Elci, Chris Partridge, Leo Obrst, Peter P. Yim, Susie Stephens & TatianaMalyuta.

See also: DatabaseAndOntology (the 'project' homepage for this series)

The community is requested to contribute their thoughts by posting to [ontolog-forum] or to the DatabaseAndOntology wiki page (and/or its subpages). We hope to accumulate and synthesize the knowledge gathered and compile it into a written deliverable (a paper or even a handbook) that we could publish this collaboratively authored work to other relevant media and channels (like relevant conferences or the wikipedia.)

Agenda & Proceedings: "Database And Ontology" Series Session-11

  • Session Format: this is a virtual session conducted over an augmented conference call.
  • Agenda:
    • 1. Opening by the Session Co-Chair - Dr. Leo Obrst
    • 2. we'll go around with a self-introduction of participants (10~15 minutes) - All - we'll skip this if we have more than 20 participants (in which case, it will be best if members try to update their namesake pages on this wiki prior to the call so that everyone can get to know who's who more easily.)
    • 3. Introduction of the invited speaker - Dr. Melliyal Annamalai
    • 4. Invited Speaker Presentation (60~75 minutes) - Dr. Zhe (Alan) Wu
    • 5. Q & A and Open discussion by all participants (20~30 minutes)
    • 6. Summary / Conclusion / Announcements - Mr. Kurt Conrad (Ontolog co-convener) (~5 minutes)

Title: A Scalable RDBMS-Based Inference Engine for RDFS/OWL

Abstract (by AlanWu)

Inference engine is a key component of Semantic Web technologies. As Semantic Web technologies is gaining traction, OWL ontologies and RDF graphs are growing increasingly in size. Users and application developers of semantic web technologies therefore need an efficient and scalable inference engine that is not bound by main-memory size. Another critical requirement is that inferred knowledge together with the original knowledge base should be made available in a query-friendly format. Traditional RDBMS technology has proven to be a suitable platform for building such an inference engine. In this talk, we present an architecture for a scalable RDBMS-based inference engine, discuss expressivity vs. efficiency tradeoffs, explore an interesting separation of T-Box and A-Box reasoning, and finally show the inference engine performance using benchmark ontologies.

About the Invited Speaker

[picture of Dr. Zhe (Alan) Wu] ZheWu_2007a.jpg
Zhe (a.k.a Alan) Wu received his PhD degree in computer science from the University of Illinois at Urbana-Champaign in 2001. He received his B.E. degree from the Special Class for Gifted Young, University of Science & Technology of China in 1996. He is currently a Principal Member of Technical Staff working in New England Development Center, Oracle. As an Oracle representative, he served on UDDI standard

specification technical committee from Aug. 2003 to Sept. 2005. His work and research interests are in semantic web technologies, logical inferencing, database, web services, nonlinear optimization, computer security and computer networks.

Resources

  • Our speaker's prepared slides can be accessed by pointing your web browsers to one of the versions compatible with your system below:

http://ontolog.cim3.net/file/work/DatabaseAndOntology/2007-10-18_AlanWu/RDBMS-RDFS-OWL-InferenceEngine--AlanWu_20071018.pdf

http://ontolog.cim3.net/file/work/DatabaseAndOntology/2007-10-18_AlanWu/RDBMS-RDFS-OWL-InferenceEngine--AlanWu_20071018.ppt

http://ontolog.cim3.net/file/work/DatabaseAndOntology/2007-10-18_AlanWu/RDBMS-RDFS-OWL-InferenceEngine--AlanWu_20071018-alt.ppt

  • links to additional relevant resources:
    • ... 'add resources here ...

Questions, Answers & Discourse

  • Please mute your phone, by pressing "*2" on your phone keypad, when the talk is in progress. To un-mute, press "*3"
  • If you want to speak or have questions or remarks to make, please "raise your hand (virtually)" by pressing "11" on your phone keypad. You may speak when acknowledged by the speaker or the session moderator.
  • experimental: Try logging into the browser-based IM-chat session (especially if your connection and voice quality is not very good.)
    • point a separate browser tab (or window) to http://webconf.soaphub.org/conf/room and enter: Room="ontolog_20071018" and My Name="Your Own Name" (e.g. "JaneDoe")
    • or point your browser to: http://webconf.soaphub.org/conf/room/ontolog_20071018
      • instructions: once you've got access to the page, click on the "settings" button, and identify yourself (by modifying the Name field). You can indicate that you want to ask a question verbally by clicking on the "hand" button, and wait for the moderator to call on you; or, type and send your question into the chat window at the bottom of the screen.
    • For those who have further questions or remarks on the topic, please post them to the [ontolog-forum] so that everyone in the community can benefit from the discourse.
  • ... More Questions

Audio Recording of this Session

  • To download the audio recording of the session, click here
    • the playback of the audio files require the proper setup, and an MP3 compatible player on your computer.
  • Conference Date and Time: 18-Oct-2007 10:36am~11:48pm Pacific Standard Time
  • Duration of Recording: 1 Hour 07 Minutes
  • Recording File Size: 7.6 MB (in mp3 format)
  • Telephone Playback
    • Prior to the Expiration Date of 18-Nov-2007 0:00 AM PST, one can call-in and hear the telephone playback of the session.
    • Playback Dial-in Number: (long distance costs apply)
      • US: +1-605-475-8599
      • Belgium: +070 35 9990
      • France: +0826 100 279
      • Germany: +01805 00 7641
      • Ireland: +0818 270 036
      • Italy: +0848 390 177
      • Switzerland: +0848 560 197
      • UK: +0870 738 0768
      • Skype: +990008271111 (free computer-to-computer call)
      • non-Skype callers from other countries can dial into either the US or UK number for the playback (long distance costs apply)
      • Conference ID: 5823120#
      • Recording Reference Number: 122820#
    • suggestion:
      • its best that you listen to the session while having the slide presentation opened in front of you. You'll be prompted to advance slides by the speaker.



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