The availability of mobile device ecologies enables new types of ad-hoc co-located decision-
making and sensemaking practices in which people find, collect, discuss, and share …

Motivated by many practical applications in logistics and mobility-as-a-service, we study the
top-k optimal sequenced routes (KOSR) querying on large, general graphs where the edge …

Route search and planning have been playing an important role in spatial data
management and location-based social services. In this light, we conduct a survey on …

Nowadays, people like to travel to alleviate the stress and depression they experience in
their busy lives, and if they can do so at a low cost, it will be even more beneficial to them. A …

Privacy has become a major concern for the users of location-based services (LBSs) and
researchers have focused on protecting user privacy for different location-based queries. In …

The optimal sequenced route (OSR) query, as a popular problem in route planning for smart
cities, searches for a minimum-distance route passing through several POIs in a specific …

In this paper, we introduce the concept of" dynamic groups" for Group Trip Planning (GTP)
queries and propose a novel query type Dynamic Group Trip Planning (DGTP) queries. The …

Recently, location-based social networks, that involve both social and spatial information,
have received much attention in many real-world applications such as location-based …

Computing Multi-source Shortest Path query with Assembly points () is a fundamental graph
problem. The problem locates a set of assembly points to minimize the overall distance for …

In recent years, ridesharing has become a popular model that enables users to share their
rides with others. In this article, we introduce a novel ridesharing service, an Activity-aware …