991 research outputs found
The ALVIS Format for Linguistically Annotated Documents
The paper describes the ALVIS annotation format designed for the indexing of
large collections of documents in topic-specific search engines. This paper is
exemplified on the biological domain and on MedLine abstracts, as developing a
specialized search engine for biologists is one of the ALVIS case studies. The
ALVIS principle for linguistic annotations is based on existing works and
standard propositions. We made the choice of stand-off annotations rather than
inserted mark-up. Annotations are encoded as XML elements which form the
linguistic subsection of the document record
Hierarchical Communication Diagrams
Formal modelling languages range from strictly textual ones like process algebra scripts to visual modelling languages based on hierarchical graphs like coloured Petri nets. Approaches equipped with visual modelling capabilities make developing process easier and help users to cope with more complex systems. Alvis is a modelling language that combines possibilities of formal models verification with flexibility and simplicity of practical programming languages. The paper deals with hierarchical communication diagrams - the visual layer of the Alvis modelling language. It provides all necessary information to model system structure with Alvis, to manipulate a model hierarchy and to understand a model semantics. All considered concepts are discussed using illustrative examples
Barnes Hospital Bulletin
https://digitalcommons.wustl.edu/bjc_barnes_bulletin/1139/thumbnail.jp
Barnes Hospital Bulletin
https://digitalcommons.wustl.edu/bjc_barnes_bulletin/1059/thumbnail.jp
Peer to Peer Information Retrieval: An Overview
Peer-to-peer technology is widely used for file sharing. In the past decade a number of prototype peer-to-peer information retrieval systems have been developed. Unfortunately, none of these have seen widespread real- world adoption and thus, in contrast with file sharing, information retrieval is still dominated by centralised solutions. In this paper we provide an overview of the key challenges for peer-to-peer information retrieval and the work done so far. We want to stimulate and inspire further research to overcome these challenges. This will open the door to the development and large-scale deployment of real-world peer-to-peer information retrieval systems that rival existing centralised client-server solutions in terms of scalability, performance, user satisfaction and freedom
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A computer system to perform structure comparison using TOPS representations of protein structure
We describe the design and implementation of a fast topology–based method
for protein structure comparison. The approach uses the TOPS topological representation
of protein structure, aligning two structures using a common discovered
pattern and generating measure of distance derived from an insert score. Heavy
use is made of a constraint-based pattern matching algorithm for TOPS diagrams
that we have designed and described elsewhere Gilbert et al. (1999). The comparison
system is maintained at the European Bioinformatics Institute and is available
over the Web via the at tops.ebi.ac.uk/tops. Users submit a structure description in
Protein Data Bank (PDB) format and can compare it with structures in the entire
PDB or a representative subset of protein domains, receiving the results by email
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