Friendship Prediction using Semi-supervised Learning of Latent Features in Smartphone Usage Data

Yuka Ikebe, Masaji Katagiri, Haruo Takemura

2012

Abstract

This paper describes a semi-supervised learning method that uses smartphone usage data to identify friendship in the one-class setting. The method is based on the assumption that friends share some interests and their smartphone usage reflects this. The authors combine a supervised link prediction method with matrix factorization which incorporates latent features acquired from the application usage and Internet access. The latent features are optimized jointly with the process of link prediction. Moreover, the method employs the sigmoidal function to estimate user affinities from the polarized latent user features. To validate the method, fifty university students volunteered to have their smartphone usage monitored for 6 months. The results of this empirical study show that the proposal offers higher friendship prediction accuracy than state-of-the-art link prediction methods.

Paper Citation

in Harvard Style

Ikebe Y., Katagiri M. and Takemura H. (2012). Friendship Prediction using Semi-supervised Learning of Latent Features in Smartphone Usage Data . In Proceedings of the International Conference on Knowledge Discovery and Information Retrieval - Volume 1: KDIR, (IC3K 2012) ISBN 978-989-8565-29-7, pages 199-205. DOI: 10.5220/0004133201990205

in Bibtex Style

@conference{kdir12,
author={Yuka Ikebe and Masaji Katagiri and Haruo Takemura},
title={Friendship Prediction using Semi-supervised Learning of Latent Features in Smartphone Usage Data},
booktitle={Proceedings of the International Conference on Knowledge Discovery and Information Retrieval - Volume 1: KDIR, (IC3K 2012)},
year={2012},
pages={199-205},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004133201990205},
isbn={978-989-8565-29-7},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Knowledge Discovery and Information Retrieval - Volume 1: KDIR, (IC3K 2012)
TI - Friendship Prediction using Semi-supervised Learning of Latent Features in Smartphone Usage Data
SN - 978-989-8565-29-7
AU - Ikebe Y.
AU - Katagiri M.
AU - Takemura H.
PY - 2012
SP - 199
EP - 205
DO - 10.5220/0004133201990205