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<Paper uid="M93-1021">
  <Title>UNISYS : Description of the CBAS System Used for MUC- 5</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
INTRODUCTION
</SectionTitle>
    <Paragraph position="0"> This paper describes CBAS, a data extraction system with rule-based reasoning modules .' The CBAS architecture depicted in Figure 1 emphasizes the use of multiple processors to detect significant primitive facts which are then processed by reasoning modules implemented as collections of forward-chaining rules to infer additional information . A guiding principle behind the architecture is to rely as much as possible o n initial processors with relatively simple internal structure in order to insure greater robustness . However , the model does allow for the use of sophisticated initial processors, processors which embody linguisti c analysis techniques . This emphasis on collections of multiple preprocessors which provide sets of primitiv e facts to be reasoned about is reminiscent of the standard architecture proposed for multisensor data fusio n systems (where preprocessor = sensor) [5] .</Paragraph>
  </Section>
class="xml-element"></Paper>