Bootstrapped Discovery and Ranking of Relevant Services and Information in Context-aware Systems
Journal Title: EAI Endorsed Transactions on Context-aware Systems and Applications - Year 2015, Vol 2, Issue 5
Abstract
A context-aware system uses context to provide relevant information and services to the user, where relevancy depends on the user’s situation. This relevant information could include a wide range of heterogeneous content. Many existing context-aware systems determine this information based on pre-defined ontologies or rules. In addition, they rely on users’ context history to filter it. Moreover, they often provide domain-specific information. Such systems are not applicable to a large and varied set of user situations and information needs, and may suffer from cold start for new users. In this paper, we address these limitations and propose a novel, general and flexible approach for bootstrapped discovery and ranking of heterogeneous relevant services and information in context-aware systems. We design and implement four variations of a base algorithm that ranks candidate relevant services, and the information to be retrieved from them, based on the semantic relatedness between the information provided by the services and the user’s situation description. We conduct a live deployment with 14 subjects to evaluate the efficacy of our algorithms. We demonstrate that they have strong positive correlation with human supplied relevance rankings and can be used as an effective means to discover and rank relevant services and information. We also show that our approach is applicable to a wide set of users’ situations and to new users without requiring any user interaction history.
Authors and Affiliations
Preeti Bhargava, James Lampton, Ashok Agrawala
Keywords
Related Articles
- EP ID EP45761
- DOI http://dx.doi.org/10.4108/eai.22-7-2015.2260179
- Views 275
- Downloads 0
A 802.22b protocol for inter/intra WRAN communication
In this paper we focus on cognitive 802.22b Wireless Regional Area Networks (WRANs). In particular a protocol, named inter intra-resource sharing algorithm (2I-RSA), is presented to address the problem of self coexistenc...
Context-Aware Mobility in Internet of Thing: A Survey
The rapid growth in Internet of Thing (IoT) yields big data that require management, computing, authentication, and analysis. In the first step of IoT, the static things are connected together such as: sensors, cameras,...
Managing flexible care with a context aware system for ageing-in-place
This paper describes the Care4Balance (C4B) system for better facilitating communication and task coordination between formal and informal caregivers, and older adults as care receivers. Field-tests with older adults (n=...
Query Optimization in Object Oriented Databases Based on SD-Tree and n-ary Tree
In this paper, we suggest a new technique to create index helping to query almost identical similarities with keywords in case there is no correct match found. It is based on a SD-Tree and a n-ary Tree helping to query r...
Chronological states of viewer’s intentions using hidden Markov models and features of eye movement
To determine the possibility of predicting viewer’s internal states using the hidden Markov model, several features of eye movements were introduced to the model. Performance was measured using the data from a set of eye...