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<Paper uid="J84-1002">
  <Title>A Formal Basis for Performance Evaluation of Natural Language Understanding Systems</Title>
  <Section position="12" start_page="0" end_page="0" type="ackno">
    <SectionTitle>
Acknowledgements
</SectionTitle>
    <Paragraph position="0"> We are grateful to the anonymous referees for their useful criticism and suggestions.</Paragraph>
    <Paragraph position="1"> We would also like to acknowledge the appreciated support provided by CSELT Laboratories (Torino, Italy) with the experimentation of the PARNAX system. null</Paragraph>
  </Section>
class="xml-element"></Paper>