this study was carried out on 1330 infants, from one to 24 months old, suffering from diarrhoea and moderate to severe dehydration who were hospitalized in bahrami childrens' hospital over a period of eleven months. fifteen percent of them had signs of shock and 36% had marasmus. nine percent of treated children required readmission to hospital within 24 hours of discharge and 8% were hospitali...

The Streaming Slot Filler (SSF) task in TREC Knowledge Base Acceleration track involves detecting changes to slot values (relations) over time. To handle this task, the system needs to extract relations to identify slot-filler values and detect novel values. Being the first attempt at KBA, the biggest challenge that we faced was the scale of the data. We present the approach used by University ...

The Knowledge Base Discovery Tool (KBDT) is a suite of tools and components to improve the indexing of and search for documents. KBDT extracts and displays content from documents and builds knowledge indexes based on meaning, rather than keywords. KBDT uses the indexes to perform more intelligent searches. It also includes visualization technology to display relevant results using multi-media, ...

Given two versions of a knowledge base (KB), independently modified, we investigated the problem of incorporating changes made to one KB version into the other. We have implemented a system that will perform such a reintegration, autonomously, using predetermined user preferences. This effort has lead to a greater insight into the version reintegration problem and has highlighted those areas wh...

We present syntactic characterizations of propositional update operators based in the PMA approach Winslett, 1988a, Winslett, 1988b]), and develop algorithms for computing the updated database on the basis of this characterization. Unlike any other previous work in this area, the methods presented here do not require direct manipulation or explicit storage of complete models of the database. Th...

We describe a knowledge server that permits Web users to retrieve and add knowledge in a shared knowledge base. The following features distinguish WebKB-2 from other ontology servers or KBMSs: (i) the ontology is large (at present, 69,000 categories and 87,800 links mostly coming from WordNet) and extendible at any time by any user, (ii) asynchronous cooperation between users is supported and e...

This chapter uses key concepts in the knowledge management literature to analyse the procedures and practices used by a project management team to identify, create, store, disseminate, and apply knowledge management systems for successful project completion. This project allowed a long established participant to develop on-line delivery capabilities in Portuguese higher education. The case stud...

Building a large-scale knowledge base of engineering common sense is indispensable for the development of intelligent CAD systems. At The University of Tokyo, we have started a project to build a knowledge base of physical features in the domain of mechanical design. A physical feature is a qualitative representation of a physical phenomenon and related attributes. The physical feature database...

In this paper an ontology-based knowledge acquisition tool is presented. This work is focused on the incremental development of ontologies and aims to help with the creation and maintenance of knowledge-based systems. The tool uses the version concept to implement the evolution of the ontologies. IKAT facilitates the development of ontologies through versions propagating automatically changes t...