Phithakkitnukoon, Santi and Dantu, Ram
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|DOI (Digital Object Identifier) Link:||http://dx.doi.org/doi:10.1108/17427371011084266|
|Google Scholar:||Look up in Google Scholar|
Purpose – Mobile computing research has been focused on developing technologies for handheld devices such as mobile phones, notebook computers, and mobile IP. Today, emphasis is increasing on context-aware computing, which aims to build the intelligence into mobile devices to sense and respond to the user’s context. The purpose of this paper is to present a context-aware mobile computing model (ContextAlert) that senses the user’s context and intelligently configures the mobile phone alert mode accordingly.
Design/methodology/approach – The paper proposes a three-step approach in designing the model based on the embedded sensor data (accelerometer, GPS antenna, and microphone) of a G1 Adriod phone. As adaptivity is essential for context-aware computing, within this model a new learning mechanism is presented to maintain a constant adaptivity rate for new learning while keeping the catastrophic forgetting problem minimal.
Findings – The model has been evaluated in many aspects using data collected from human subjects. The experiment results show that the proposed model performs well and yields a promising result. Originality/value – This paper is distinguished from other previous papers by: first, using multiple sensors embeded in the mobile phone, which is more realistic for detecting the user’s context than having various sensors attached to different parts of user’s body; second, by being a novel model that uses sensed contextual information to provide a service that better synchronizes the user’s daily life with a context-aware alert mode. With this service, the user can avoid the problems such as forgetting to switch to vibrate mode while in a meeting or a movie theater, and taking the risk of picking up a phone call while driving, and third, being an adaptive learning algorithm that maintains a constant adaptivity rate for new learning while keeping the catastrophic forgetting problem minimal.
|Item Type:||Journal Article|
|Copyright Holders:||2010 Emerald Group Publishing Limited|
|Funders:||National Science Foundation (NSF)|
|Keywords:||mobile communication systems; adaptive system theory|
|Academic Unit/Department:||Mathematics, Computing and Technology|
|Depositing User:||Santi Phithakkitnukoon|
|Date Deposited:||31 Oct 2012 11:04|
|Last Modified:||31 Oct 2012 18:01|
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