Mining User Generated Content

Preface

In recent years, we have witnessed the convergence of social networks, mo-

bile computing, and cloud computing. These trends have encouraged users to

carry out most of their social interactions online on social networks and on

the move. Through these social networks, users routinely comment on issues,

ask questions, provide answers, tweet or blog about their views, and conduct

online purchases. Through their mobile devices, they perform spontaneous

check-ins to their favorite venues, and readily share their photos and videos of

local situations, and so on. The content accumulated has evolved into a huge

unstructured source of timely knowledge ...