Learn More
With an increasing number of rich embedded sensors, like accelerometer and GPS, smartphone becomes a pervasive people-centric sensing platform for inferring user's daily activities and social contexts. Alternatively, wireless sensor network offers a comprehensive platform for capturing the surrounding environmental information using mobile sensing nodes,(More)
In several applications, data objects move on pre-defined spatial networks such as road segments, railways , and invisible air routes. Many of these objects exhibit similarity with respect to their traversed paths, and therefore two objects can be correlated based on their motion similarity. Useful information can be retrieved from these correlations and(More)
In several applications, data objects are assumed to move on predefined spatial networks such as road segments, railways, and invisible air routes. Moving objects may exhibit similarity with respect to their traversed paths, and therefore two objects can be correlated based on their path similarity. In this paper, we study similarity search for moving(More)
In contrast to regular queries that are evaluated only once, a continuous query remains active over a period of time and has to be continuously evaluated to provide up to date answers. We propose a method for continuous range query processing for different types of queries, characterized by mobility of objects and/or queries which all follow paths in an(More)
In contrast to regular queries that are evaluated only once, a continuous query remains active over a period of time and has to be continuously evaluated to provide up to date results. We propose a method for continuous range query processing for different types of queries, characterized by mobility of objects and/or queries which follow paths in an(More)
SUMMARY Development of geographic information systems for mobile and hand held computer devices requires significantly modified approach in comparison to development of more traditional GISs. Main issues to be addressed are efficient handling of limited memory and processing power, appropriate management and presentation of information on highly restricted(More)
Geographic Information Systems (GISs) have become an essential tool for efficient handling of our natural and artificial environment. The most important activities in a GIS are querying and spatial analysis of georeferenced data providing decision making and problem solving support. Traditional database query languages and tools are inappropriate for GIS(More)
In this paper we address the problem of processing continuous range queries on mobile objects. In contrast to regular queries that are evaluated once, a continuous query remains active over period of time and has to be continuously evaluated during this time to provide up to date answers. The continuous range query processing we base on the mobile object(More)