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<Paper uid="N04-3006">
  <Title>Open Text Semantic Parsing Using FrameNet and WordNet</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> The goal of the semantic parser is to analyze the semantic structure of a natural language sentence. Similar in spirit with the syntactic parser - whose goal is to parse a valid natural language sentence into a parse tree indicating how the sentence can be syntactically decomposed into smaller syntactic constituents - the purpose of the semantic parser is to analyze the structure of sentence meaning. Sentence meaning is composed by entities and interactions between entities, where entities are assigned semantic roles, and can be further modified by other modifiers. The meaning of a sentence is decomposed into smaller semantic units connected by various semantic relations by the principle of compositionality, and the parser represents the semantic structure including semantic units as well as semantic relations, connecting them into a formal format.</Paragraph>
    <Paragraph position="1"> One major problem faced by many natural language understanding applications that rely on syntactic analysis of text, is the fact that similar syntactic patterns may introduce different semantic interpretations. Likewise, similar meanings can be syntactically realized in many different ways.</Paragraph>
    <Paragraph position="2"> The semantic parser attempts to solve this problem, and produces a syntax-independent representation of sentence meaning, so that semantic constituents can be accessed and processed in a more meaningful and flexible way, avoiding the sometimes rigid interpretations produced by a syntactic analyzer. For instance, the sentences I boil water and water boils contain a similar relation between water and boil, even though they have different syntactic structures.</Paragraph>
    <Paragraph position="3"> In this paper, we describe the main components of the semantic parser, and illustrate the basic procedures involved in parsing semantically open text. Our semantic parser departs from current approaches in statistics-based annotations of semantic structures. Instead, we are using publicly available lexical resources (FrameNet and WordNet) as a starting point to derive rules for a rule-based semantic parser.</Paragraph>
  </Section>
class="xml-element"></Paper>