Imperial College London

Professor Yiannis Demiris

Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor of Human-Centred Robotics, Head of ISN
 
 
 
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Contact

 

+44 (0)20 7594 6300y.demiris Website

 
 
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Location

 

1014Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chatzis:2012,
author = {Chatzis, SP and Demiris, Y},
journal = {Expert Systems with Applications},
pages = {7235--7246},
title = {A Sparse Nonparametric Hierarchical Bayesian Approach Towards Inductive Transfer for Preference Modeling},
url = {http://www.iis.ee.ic.ac.uk/yiannis},
volume = {39},
year = {2012}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - In this paper, we present a novel methodology for preference learning based on the concept of inductive transfer. Specifically, we introduce a nonparametric hierarchical Bayesian multitask learning approach, based on the notion that human subjects may cluster together forming groups of individuals with similar preference rationale (but not identical preferences). Our approach is facilitated by the utilization of a Dirichlet process prior, which allows for the automatic inference of the most appropriate number of subject groups (clusters), as well as the employment of the automatic relevance determination (ARD) mechanism, giving rise to a sparse nature for our model, which significantly enhances its computational efficiency. We explore the efficacy of our novel approach by applying it to both a synthetic experiment and a real-world music recommendation application. As we show, our approach offers a significant enhancement in the effectiveness of knowledge transfer in statistical preference learning applications, being capable of correctly inferring the actual number of human subject groups in a modeled dataset, and limiting knowledge transfer only to subjects belonging to the same group (wherein knowledge transferability is more likely).
AU - Chatzis,SP
AU - Demiris,Y
EP - 7246
PY - 2012///
SP - 7235
TI - A Sparse Nonparametric Hierarchical Bayesian Approach Towards Inductive Transfer for Preference Modeling
T2 - Expert Systems with Applications
UR - http://www.iis.ee.ic.ac.uk/yiannis
VL - 39
ER -