Mohammed Eunus Ali

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Cloud computing has revolutionized the way computing and software services are delivered to the clients on demand. It offers users the ability to connect to computing resources and access IT managed services with a previously unknown level of ease. Due to this greater level of flexibility, the cloud has become the breeding ground of a new generation of(More)
A group of friends located at their working places may want to plan a trip to visit a shopping center, have dinner at a restaurant, watch a movie at a theater, and then finally return to their homes with the minimum total trip distance. For a group of spatially dispersed users a group trip planning (GTP) query returns points of interests (POIs) of different(More)
User privacy in location-based services (LBSs) has become an important research area. We introduce a new direction to protect user privacy that evaluates LBSs with crowdsourced data and computation and eliminates the role of a location-based service provider. We focus on the group nearest neighbor (GNN) query that allows a group to meet at their nearest(More)
The advancement of mobile technologies and the proliferation of map-based applications have enabled a user to access a wide variety of services that range from information queries to navigation systems. Due to the popularity of map-based applications among the users, the service provider often requires to answer a large number of simultaneous queries. Thus,(More)
With recent advances in mobile computing technologies, mobile devices can now render 3D objects realistically. Many users of these devices such as tourists, mixed-reality gamers, and rescue officers, need real-time retrieval of 3D objects over a wireless network. Due to bandwidth and latency restrictions in mobile settings, efficient continuous retrieval of(More)
With recent advances in mobile computing technologies, mobile devices can render 3D objects realistically. Users of these devices such as tourists, mixed-reality gamers, and rescue officers, often need real-time retrieval of 3D objects over wireless networks. Due to bandwidth and latency restrictions in mobile settings, efficient continuous retrieval of 3D(More)
Article history: Received 9 November 2010 Received in revised form 4 February 2012 Accepted 6 February 2012 Available online 21 February 2012 A large spectrum of applications such as location based services and environmental monitoring demand efficient query processing on uncertain databases. In this paper, we propose the probabilistic Voronoi diagram (PVD)(More)
Phase 4: Hierarchical Clustering on Probability Graph  Similarity measure: puv values from 3 rd phase  Linkage Criterion: UPGMA Phase 3: Computing the Probabilities  Given an interaction graph, GI(V, E, W), and a group interaction graph, GGI(V, Eˊ, Wˊ), we construct a probability graph GP(V, EUEˊ, P), where each weight puv ε P represents probability(More)
Many real-world problems, such as placement of surveillance cameras and pricing of hotel rooms with a view, require the ability to determine the visibility of a given target object from different locations. Advances in large-scale 3D modeling (e.g., 3D virtual cities) provide us with data that can be used to solve these problems with high accuracy. In this(More)