Recent advances in sensor and mobile devices have enabled an unprecedented increase
in the availability and collection of urban trajectory data, thus increasing the demand for …

In the past decade, positioning system-enabled devices such as smartphones have become
most prevalent. This functionality brings the increasing popularity of location-based services …

Reverse k nearest neighbor (RkNN) queries have a broad application base such as
decision support, profile-based marketing, and resource allocation. Previous work on RkNN …

GPS enables mobile devices to continuously provide new opportunities to improve our daily
lives. For example, the data collected in applications created by Uber or Public Transport …

Given a set of users, a set of facilities and a query facility q, a reverse k nearest neighbors (R
k NN) query returns every user u for which the query is one of its k closest facilities. R k NN …

Abstract The Internet of Things (IoT) has developed rapidly in recent years where significant
numbers of devices have been connected to the network and this will increase over the …

Modern navigation systems do not only provide shortest paths but also some alternative
paths to provide more options to the users. This paper is the first to study the problem of …

Effective querying of data in the road networks is an important problem in the Internet of
vehicles. Aggregate nearest neighbor queries can return the objects that minimizes an …

Route planning over dynamic road networks is an increasingly fundamental problem of
modern transportation systems for human society, especially in the field of Intelligent Supply …

As a major type of continuous spatial queries, the moving spatial keyword queries have
been studied extensively. Most existing studies focus on retrieving single objects, each of …