A model for representing and evaluating flexible Location-Based Spatial Queries (LBSQ) is
proposed. In a LBSQ the selection condition is generally a constraint on the distance of the …

There exists an increasing usage rate of location-based information from mobile devices,
which requires new query processing strategies. One such strategy is a continuous region …

The subject of this thesis is the intelligent caching of top-k queries in an environment with
high latency and low throughput. In such an environment, caching can be used to reduce …

A Location-based Service has to protect user's location and query information to alleviate
privacy concerns. Several location and query privacy preserving approaches, based on the …

Many emerging applications of location-based services continuously monitor a set of moving
objects and answer queries pertaining to their locations. Query processing in such services …

In many scenarios, particularly in military and emergency response operations, mobile
nodes that are in close proximity to each other exhibit a high degree of data affinity. For …

In this paper, we propose the Area Code Tree for nearest neighbour searching. It is a trie-
type structure that stores points of interest (POIs) that are represented in area code format …

Problem statement: Cooperative caching, which allows sharing and coordination of cached
data among clients, is a potential technique to improve the data access performance and …

Efficient utilization of resources is one of the reasons of popularity of semantic cache. The
authors presented detailed survey with comprehensive criteria for efficient query processing …

With the rapid adoption of mobile devices and location based services (LBS), applications
provide with nearby information like recommending sightseeing resort are becoming more …