For bridging the gap between information retrieval (IR) and databases (DB), this article focuses on the logical view. We claim that IR should adopt three major concepts from DB, namely inference, vague predicates and expressive query languages. By regarding IR as uncertain inference, probabilistic versions of relational algebra and Datalog yield very powerful inference mechanisms for IR as well...

This paper describes the VideoSTAR experimental database system that is being designed to support video applications in sharing and reusing video data and meta data VideoSTAR provides four di erent repositories for media les virtual documents video structures and video annotations user indexes It also provides a generic video data model relating data in the di erent repositories to each other a...

PROGRESS IN GENETIC engineering, X-ray crystallography and Nuclear Magnetic Resonance (NMR) spectroscopy, and the advent of cheap and powerful computers, have brought about an exponential growth of data on macromolecular three-dimensional structures. Although the number of protein structures known today (approximately 3500) is still well below that of protein sequences (over 50 000), its growth...

In encrypted databases, sensitive data is protected from an untrusted server by encrypting columns using partially homomorphic encryption schemes, and storing encryption keys in a trusted client. However, encrypting columns and protecting encryption keys does not ensure confidentiality sensitive data can leak during query processing due to information flows through the trusted client. In this p...

Web information coupling refers to an association of topically related web documents. This coupling is initiated explicitly by a user in a web warehouse specially designed for web information. Web information coupling provides the means to derive additional, useful information from the WWW. In this paper, we discuss and show how two web operators, i.e., global web coupling and local web couplin...

Welcome to the special issue on " Information mining from multimedia databases. " The main focus of this issue is on information mining techniques for the extraction and interpretation of semantic contents in multimedia databases. The advances in multimedia production technologies have resulted in a rapid proliferation of various forms of media data types on the Internet. Given these high volum...

Copyright © 2003, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. ABSTRACT While incomplete information is endemic to real-world data, current multidimensional data models are not engineered to manage incomplete information in base data, derived data, and dimensions. This chapter presents several strategies for ma...