PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Ranking Relations using Analogies in Biological and Information Networks
Ricardo Silva, Katherine Heller, Zoubin Ghahramani and Eduardo AIroldi
Annals of Applied Statistics 2010.

Abstract

Analogical reasoning depends fundamentally on the ability to learn and generalize about relations between objects. We develop an approach to relational learning which, given a set of pairs of objects S = {A1:B1, A2:B2, >..., AN:BN}, measures how well other pairs A:B fit in with the set S. Our work addresses the question: is the relation between objects A and B analogous to those relations found in S? Such questions are particularly relevant in information retrieval, where an investigator might want to search for analogous pairs of objects that match the query set of interest. There are many ways in which objects can be related, making the task of measuring analogies very challenging. Our approach combines a similarity measure on function spaces with Bayesian analysis to produce a ranking. It requires data containing features of the objects of interest and a link matrix specifying which relationships exist; no further attributes of such relationships are necessary. We illustrate the potential of our method on text analysis and information networks. An application on discovering functional interactions between pairs of proteins is discussed in detail, where we show that our approach can work in practice even if a small set of protein pairs is provided.

EPrint Type:Article
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Computational, Information-Theoretic Learning with Statistics
Learning/Statistics & Optimisation
ID Code:6743
Deposited By:Katherine Heller
Deposited On:08 March 2010