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Bayesian nonparametric extraction of hidden contexts from pervasive honest signals

conference contribution
posted on 2014-01-01, 00:00 authored by Cong Thuong Nguyen
Hidden patterns and contexts play an important part in intelligent pervasive systems. Most of the existing works have focused on simple forms of contexts derived directly from raw signals. High-level constructs and patterns have been largely neglected or remained under-explored in pervasive computing, mainly due to the growing complexity over time and the lack of efficient principal methods to extract them. Traditional parametric modeling approaches from machine learning find it difficult to discover new, unseen patterns and contexts arising from continuous growth of data streams due to its practice of training-then-prediction paradigm. In this work, we propose to apply Bayesian nonparametric models as a systematic and rigorous paradigm to continuously learn hidden patterns and contexts from raw social signals to provide basic building blocks for context-aware applications. Bayesian nonparametric models allow the model complexity to grow with data, fitting naturally to several problems encountered in pervasive computing. Under this framework, we use nonparametric prior distributions to model the data generative process, which helps towards learning the number of latent patterns automatically, adapting to changes in data and discovering never-seen-before patterns, contexts and activities. The proposed methods are agnostic to data types, however our work shall demonstrate to two types of signals: accelerometer activity data and Bluetooth proximal data. © 2014 IEEE.

History

Event

Pervasive Computing and Communications. IEEE Conference (2014 : Budapest, Hungary)

Pagination

168 - 170

Publisher

IEEE

Location

Budapest, Hungary

Place of publication

Piscataway, N.J.

Start date

2014-03-24

End date

2014-03-28

Language

eng

Publication classification

E2 Full written paper - non-refereed / Abstract reviewed; E Conference publication

Copyright notice

2014, IEEE

Editor/Contributor(s)

[Unknown]

Title of proceedings

PERCOM WORKSHOPS 2014 : Proceedings of the 2014 IEEE International Conference on Pervasive Computing and Communication Workshops

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