Campus Event Calendar
Event Entry
What and Who
On Information Retrieval Models and DB+IR
Thomas Roelleke
Queen Mary University, London, UK
Colloquium Lecture
AG 1, AG 2, AG 3, AG 4, AG 5, SWS
AG Audience
English
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Date, Time and Location
Tuesday, 31 October 2006
16:00
90 Minutes
E1 4
024
Saarbrücken
Abstract
Information Retrieval (IR) models come in two main forms:
vector-based and probabilistic. Each form is an expressive framework in
which many models can be expressed. What is the common ground, and how are
models related? I will report on results how to express major IR concepts
(term frequencies, IR models, authorities, evaluation) in a general matrix
framework (Roelleke/etal:IPM:2006), and how to relate probabilistic models
(binary independent retrieval, language modelling, Poisson) in a parallel
derivation where event spaces and background models are explicit
(Roelleke/Wang:SIGIR:2006).
We investigated the underlying general concepts since we wish to support
the high-level engineering of customised IR models in our DB+IR framework
HySpirit, a probabilistic deductive DB+IR system (Fuhr/Roelleke:TOIS:1997,
Fuhr/etal:SIGIR:1998, Roelleke/etal:TREC:2005, www.apriorie.co.uk), and I
will demonstrate some HySpirit features.
vector-based and probabilistic. Each form is an expressive framework in
which many models can be expressed. What is the common ground, and how are
models related? I will report on results how to express major IR concepts
(term frequencies, IR models, authorities, evaluation) in a general matrix
framework (Roelleke/etal:IPM:2006), and how to relate probabilistic models
(binary independent retrieval, language modelling, Poisson) in a parallel
derivation where event spaces and background models are explicit
(Roelleke/Wang:SIGIR:2006).
We investigated the underlying general concepts since we wish to support
the high-level engineering of customised IR models in our DB+IR framework
HySpirit, a probabilistic deductive DB+IR system (Fuhr/Roelleke:TOIS:1997,
Fuhr/etal:SIGIR:1998, Roelleke/etal:TREC:2005, www.apriorie.co.uk), and I
will demonstrate some HySpirit features.
Contact
Gerhard Weikum
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Petra Schaaf, 10/25/2006 12:05
Petra Schaaf, 10/24/2006 14:15 -- Created document.
Petra Schaaf, 10/24/2006 14:15 -- Created document.