Crowdsourcing is a process of acquisition, integration, and analysis of big and
heterogeneous data generated by a diversity of sources in urban spaces, such as sensors …

Detecting events from web resources has attracted increasing research interests in recent
years. Our focus in this paper is to detect events from photos on Flickr, an Internet image …

As pervasive computing meets social networks, there is a fast growing research field called
pervasive social computing. Applications in this area exploit the richness of information …

Lately there exist increasing demands for online abnormality monitoring over trajectory
streams, which are obtained from moving object tracking devices. This problem is …

An emergency event is an unexceptional event that exceeds the capacity of normal
resources and organization to cope and a situation that poses an immediate risk to health …

With the rapidly increasing popularity of social media sites (eg, Flickr, YouTube, and
Facebook), it is convenient for users to share their own comments on many social events …

Social networks represent a sophisticated tool for accessing the preferences and properties
of individuals and groups. Thus, they potentially allow up-to-date, richly annotated …

This paper is concerned with the problem of browsing social annotations. Today, a lot of
services (eg, Del. icio. us, Filckr) have been provided for helping users to manage and share …

This paper is concerned with the problem of mining competitors from the Web automatically.
Nowadays the fierce competition in the market necessitates every company not only to know …

An urban emergency event requires an immediate reaction or assistance for an emergency
situation. With the popularity of the World Wide Web, the internet is becoming a major …