We view cooperating systems as being a set of systems that are distributed over a common communication network and that work towards solving a common task. This is achieved by coordinating and exchanging information and expertise. Such systems exclude conventional database systems since the knowledge these systems contain is buried within application code. In this paper, we overcome this proble...

In this paper, we present the design, implementation techniques, and initial performance evaluation of Gamma. Gamma is a new relational database machine that exploits dataflow query processing techniques. Gamma is a fully operational prototype consisting of 20 VAX 11/750 computers. The design of Gamma is based on what we learned from building our earlier multiprocessor database machine prototyp...

This paper presents a practical system for automated 3D road network reconstruction from aerial images using knowledge-based image analysis. The system integrates processing of color image data and information from digital spatial databases, extracts and fuses multiple object cues, takes into account context information, employs existing knowledge, rules and models, and treats each road subclas...

A new algorithm has been developed to compile a database of radiometric emission/scattering from different surfaces based on satellite observations obtained from heterogeneous areas that comprise those surfaces. An application is presented to compile a backscatter database of ice types during the freeze-up season in the Canadian Arctic using operational analysis of Radarsat-1 images from the Ca...

Assignment of 16S rRNA gene sequences to operational taxonomic units (OTUs) allows microbial ecologists to overcome the inconsistencies and biases within bacterial taxonomy and provides a strategy for clustering similar sequences that do not have representatives in a reference database. I have applied the Matthews correlation coefficient to assess the ability of 15 reference-independent and -de...

metabolomics studies provide useful information about health and disease status. metabolite based investigations on various cancers is a powerful approach to diagnosis, prognosis and therapy of cancer diseases. recently by using advanced analytical techniques such as nmr and ms and its hyphenation methods, global metabolic profiling of diseases has been possible. it is predictable that internat...

This paper presents a methodology to derive views over a relational database by applying a sequence of appropriately defined operations to the global schema. Such tailoring and composition process aims at offering personalized views over the database schema, so as to improve its ability to support the new needs of customers, support evolutionary software development, and fix existing legacy dat...

The concept of versioning was initially proposed for controlling design evolution on computer aided design and software engineering. On the context of database systems, versioning is applied for managing the evolution of different elements of the data. Modern database systems provide not only powerful data models but also complex query languages that have evolved to include several features fro...

In this paper, we describe the Citrusleaf real-time distributed database platform that is built using the core principles of traditional database consistency and reliability while also being fast and flexible enough for use in high-performance applications like real-time bidding. In fact, Citrusleaf is unique among NoSQL databases for its ability to provide immediate consistency and ACID while ...

Web portal software is relatively easy to set up and populate from the perspective of the end-user, but it leaves the back-end database devoid of subject domain semantics due to the requirement for a generic implementation. This approach seriously hampers effective search capabilities to retrieve relevant information. Ontology-based data access (OBDA) could, in theory, solve this problem throug...