Events - September 2014

Wednesday, September 24, 2014 2:30 PM EDT

DB Seminar - Real-Time On-line Analytical Processing (OLAP) On Multi-Core and Cloud Architectures

Part of the Data Systems Seminar Series (2014-2015)

Speaker: Frank Dehne, Carleton University
Friday, September 19, 2014 10:45 AM EDT

Cheriton Symposium

Speakers:
  • David Cheriton, Stanford University, 10:45am
    "HICAMP Bitmap: Space-efficient updatable bitmap index for in-memory databases"
  • Ihab Ilyas, University of Waterloo, 3:00pm
    "Data Cleaning from Theory to Practice"
  • M. Tamer Özsu, University of Waterloo, 3:45pm "Web Data Management in the RDF Age"
Monday, September 15, 2014 2:30 PM EDT

DB Meeting - Application of Definability to Query Answering over Knowledge Bases (MMath Thesis Presentation)

Speaker: Taras Kinash
Abstract: Answering object queries (i.e. instance retrieval) is a central task in ontology based data access (OBDA). Performing this task involves reasoning with respect to a knowledge base K (i.e. ontology) over some description logic (DL) dialect L. As the expressive power of L grows, so does the complexity of reasoning with respect to K. Therefore, eliminating the need to reason with respect to a knowledge base K is desirable.

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