In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
Abstract. The need for location-based services has motivated an important research effort in the efficient processing of location-dependent queries. Most of the existing approaches...
Traditionally, database management systems (DBMSs) have been associated with high-cost, high-quality functionalities. That is, powerful capabilities are provided, but only in respo...
- The issue of privacy becomes more and more important. On the other hand, online collaboration among different parties is almost unavoidable. How to allow collaboration while prot...
Pierre K. Y. Lai, Siu-Ming Yiu, K. P. Chow, C. F. ...
A database system contains base data items which record and model a physical, real world environment. For better decision support, base data items are summarized and correlated to...