The continuous development of wireless networks and mobile devices has motivated an
intense research in mobile data services. Some of these services provide the user with …

Web users and content are increasingly being geopositioned, and increased focus is being
given to serving local content in response to web queries. This development calls for spatial …

In location-based services, users with location-aware mobile devices are able to make
queries about their surroundings anywhere and at any time. While this ubiquitous computing …

Web search is ubiquitous in our daily lives. Caching has been extensively used to reduce
the computation time of the search engine and reduce the network traffic beyond a proxy …

Location-based spatial queries (LBSQs) refer to spatial queries whose answers rely on the
location of the inquirer. Efficient processing of LBSQs is of critical importance with the ever …

Recent advances in low-power sensing devices coupled with the widespread availability of
wireless ad-hoc networks have fueled the development of sensor networks. These are …

The rapid advance of wireless and portable computing technology has brought a lot of
research interests and momentum to the area of mobile computing. One of the research …

BABOONS (BlAck BOx Optimization of Natural language data Summaries) optimizes text
data summaries for an arbitrary, user-defined utility function. Primarily, it targets scenarios in …

Database systems have been driving dynamic websites since the early 1990s; nowadays,
even seemingly static websites employ a database back-end for personalization and …

We present a spatial index called the TIP-tree, for efficient, uniform, location-based access to
digital library collections that are external sources to a context-aware mobile system. Using a …