[Ltg] LTG Seminar [Luiz Pizzato, 2008-08-04, E6A 202, 11am]

[Ilya Anisimoff]

LTG Seminar
 - see: http://www.clt.mq.edu.au/Events/Seminars.html

 Monday, 4th August, 2008, 11am
 Macquarie University, E6A, Room 202
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Title: Indexing on Semantic Roles for Question Answering, and The Tupi Framework
Speaker: Luiz Pizzato

My talk on the CLT meeting this week consist of two parts. The first
is a dry run of the presentation of the paper entitled "Indexing on
Semantic Roles for Question Answering" to be published at the
Information Retrieval for Question Answering (IR4QA) workshop at
Coling 2008 (abstract below). In the second part of the meeting I will
present the newly named Tupi Framework for Information Retrieval (IR).
Following the description of the framework, I will present the
implementation of an IR system that uses the framework. The name of
the system is still undefined, so I might run a quick discussion on
possible names and suggestions.

Abstract of the paper "Indexing on Semantic Roles for Question Answering":
Semantic Role Labelling (SRL) has been used successfully in several
stages of automated Question Answering (QA) systems but its inherent
slow procedures make it difficult to use at the indexing stage of the
document retrieval component. In this paper we confirm the intuition
that SRL at indexing stage improves the performance of QA and propose
a simplified technique named the Question Prediction Language Model
(QPLM), which provides similar information with a much lower cost. The
methods were tested on four different QA systems and the results
suggest that QPLM can be used as a good compromise between speed and
accuracy.