Ranking relations using analogies in biological and information networks

Details Ranking relations using analogies in biological and information networks Ranking relations using analogies in biological and information networks

2009-12-28

arxiv.org/abs/0912.5193v2

Annals of Applied Statistics 2010, Vol. 4, No. 2, 615-644

Statistics

Methodology

Published in at http://dx.doi.org/10.1214/09-AOAS321 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Ins

Scientific paper

10.1214/09-AOAS321

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 $\mathbf{S}=\{A^{(1)}:B^{(1)},A^{(2)}:B^{(2)},...,A^{(N)}:B ^{(N)}\}$, measures how well other pairs $A:B$ fit in with the set $\mathbf{S}$. Our work addresses the following question: is the relation between objects $A$ and $B$ analogous to those relations found in $\mathbf{S}$? 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.

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