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SIGIR
2010
ACM

Has portfolio theory got any principles?

11 years 3 days ago
Has portfolio theory got any principles?
Recently, Portfolio Theory (PT) has been proposed for Information Retrieval. However, under non-trivial conditions PT violates the original Probability Ranking Principle (PRP). In this poster, we shall explore whether PT upholds a different ranking principle based on Quantum Theory, i.e. the Quantum Probability Ranking Principle (QPRP), and examine the relationship between this new model and the new ranking principle. We make a significant contribution to the theoretical development of PT and show that under certain circumstances PT upholds the QPRP, and thus guarantees an optimal ranking according to the QPRP. A practical implication of this finding is that the parameters of PT can be automatically estimated via the QPRP, instead of resorting to extensive parameter tuning. Categories and Subject Descriptors: H.3.3 Information Storage and Retrieval - Retrieval Models General Terms: Theory, Experimentation
Guido Zuccon, Leif Azzopardi, Keith van Rijsbergen
Added 06 Dec 2010
Updated 06 Dec 2010
Type Conference
Year 2010
Where SIGIR
Authors Guido Zuccon, Leif Azzopardi, Keith van Rijsbergen
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