Please use this identifier to cite or link to this item: https://doi.org/10.1007/978-3-642-30973-1_9
Title: A mean-variance based index for dynamic context data lookup
Authors: Sen, S.
Pung, H.K. 
Keywords: Context data management
Context Lookup
Context-awareness
Dynamic data
Issue Date: 2012
Source: Sen, S.,Pung, H.K. (2012). A mean-variance based index for dynamic context data lookup. Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering 104 LNICST : 101-112. ScholarBank@NUS Repository. https://doi.org/10.1007/978-3-642-30973-1_9
Abstract: primary functionality of context aware applications is the retrieval of different types of context data from various context sources and adapting their behavior accordingly. In order to facilitate context aware application development, a context aware middleware must provide an effective context data management and lookup strategy. The use of a traditional index for indexing dynamic context data is not feasible due to the high update overhead. In this paper, we propose a context data indexing mechanism that utilizes the statistical properties of data viz. the mean and variance to cluster similar data values together and minimizes the need for frequent index updates. Experimental results indicate that the performance of the proposed index structure is satisfactory with respect to the query response time and query accuracy together with a low maintenance overhead. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.
Source Title: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/41266
ISBN: 9783642309724
ISSN: 18678211
DOI: 10.1007/978-3-642-30973-1_9
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