- Computing and Information Systems - Research Publications
Computing and Information Systems - Research Publications
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ItemThe use of online social networking for higher education from an activity theory perspectiveHamid, S ; Waycott, J ; Kurnia, S ; Chang, S (National Taiwan University, 2010-12-01)
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ItemLocal network Voronoi diagramsNutanong, S ; Tanin, E ; Ali, ME ; Kulik, L (ACM, 2010)Continuous queries in road networks have gained significant research interests due to advances in GIS and mobile computing. Consider the following scenario: "A driver uses a networked GPS navigator to monitor five nearest gas stations in a road network." The main challenge of processing such a moving query is how to efficiently monitor network distances of the k nearest and possible resultant objects. To enable result monitoring in real-time, researchers have devised techniques which utilize precomputed distances and results, e.g., the network Voronoi diagram (NVD). However, the main drawback of preprocessing is that it requires access to all data objects and network nodes, which means that it is not suitable for large datasets in many real life situations. The best existing method to monitor kNN results without precomputation relies on executions of snapshot queries at network nodes encountered by the query point. This method results in repetitive distance evaluation over the same or similar sets of nodes. In this paper, we propose a method called the local network Voronoi diagram (LNVD) to compute query answers for a small area around the query point. As a result, our method requires neither precomputation nor distance evaluation at every intersection. According to our extensive analysis and experimental results, our method significantly outperforms the best existing method in terms of data access and computation costs.
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ItemShared artefacts as participatory Babel fishPedell, S ; Vetere, F ; Howard, S ; Miller, T ; Sterling, L (ACM, 2010-12-01)
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ItemEnabling strategic transformations with enterprise systems: Beyond operational efficiency research-in-progressBhattacharya, PJ ; Scheepers, R ; Seddon, PB (AISel, 2010-12-01)
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ItemWord sense disambiguation for event trigger word detectionMartinez, D ; Baldwin, T (ACM, 2010-12-01)
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ItemPrivacy preserving group nearest neighbor queriesHashem, T ; Kulik, L ; Zhang, R (ACM, 2010-05-19)
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ItemA Composite Task Meta-model as a Reference ModelGoschnick, S ; Sonenberg, L ; Balbo, S ; Forbrig, P ; Paterno, F ; Pejtersen, AM (SPRINGER-VERLAG BERLIN, 2010)
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ItemEP-based robust weighting scheme for fuzzy SVMSZhang, S ; Ramamohanarao, K ; Bezdek, JC (Australian Computer Society, 2010-12-01)
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ItemThe impact of strategy and maturity on business analytics and firm performance: A review and research agendaShanks, G ; Sharma, R ; Seddon, P ; Reynolds, P (Association for Information Systems, 2010-12-01)
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ItemThe role of relationships in the adoption of Interorganisational Information Systems (IOS)Ali, M ; Kurnia, S ; Shanks, G (Association for Information Systems, 2010-12-01)