Developing the quantum probability ranking principle

Guido Zuccon, Leif Azzopardi

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)
9 Downloads (Pure)


In this work, we summarise the development of a ranking principle based on quantum probability theory, called the Quantum Probability Ranking Principle (QPRP), and we also provide an overview of the initial experiments performed employing the QPRP. The main difference between the QPRP and the classic Probability Ranking Principle, is that the QPRP implicitly captures the dependencies be- tween documents by means of "quantum interference". Subsequently, the optimal ranking of documents is not based solely on documents' probability of relevance but also on the interference with the previously ranked documents. Our research shows that the application of quantum theory to problems within information retrieval can lead to consistently better retrieval effectiveness, while still being simple, elegant and tractable. Copyright owned by the authors.

Original languageEnglish
Pages (from-to)21-22
Number of pages2
JournalCEUR Workshop Proceedings
Publication statusPublished - 1 Jan 2010
Event1st Italian Information Retrieval Workshop, IIR 2010 - Padua, Italy
Duration: 27 Jan 201028 Jan 2010


  • quantum probability theory
  • Quantum Probability Ranking Principle (QPRP)


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