Lexicon and Lexical Rules in HPSG

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Lexicon and Lexical Rules in HPSG

• Evgenia Ivanova
• eivanova_at_sfs.uni-tuebingen.de
• February 7, 2007

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Outline

• 2 types of lexical generalizations
• Basic Lexicon and its status
• Extending the Lexicon
• with MLR
• with DLR
• Open Questions
• References

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Lexical Generalizations

• Horizontal Generalizations
• Vertical Generalizations

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Horizontal Generalizations

• Lexical rules
• If there is a grammatical word described by D
  then the corresponding words E are also
  grammatical

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Horizontal Generalizations
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Lexical Generalizations

• Horizontal Generalizations
• Vertical Generalizations

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Vertical Generalizations

• Lexical principles
• If a word is described by D, then it is also
  described by E

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Vertical Generalizations

• Complex vs type antecedents

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Vertical Generalizations

• Complex vs type antecedents

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Vertical Generalizations

• Complex vs type antecedents

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Vertical Generalizations

• Complex vs type antecedents

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Outline

• 2 types of lexical generalizations
• Basic Lexicon and its status
• Extending the Lexicon
• with MLR
• with DLR
• Open Questions
• References

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Basic Lexicon

• Lexicon external to the theory
• Lexicon internal to the theory

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Basic Lexicon - Lexicon external to the theory

• Extra set of descriptions of word objects
• G ltS, T, Lgt

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Basic Lexicon - Lexicon internal to the theory

• Ordinary implicational constraint on word objects
• Word Principle
• word ?D1 V D2 VV Dn

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Outline

• 2 types of lexical generalizations
• Basic Lexicon and its status
• Extending the Lexicon
• with MLR
• with DLR
• Open Questions
• References

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Extending the Lexicon

• MLR Meta-Level Lexical Rules (lexical entries)
• DLR Description-Level Level Rules (word objects)

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Extending the Lexicon with MLR

• R r1,rn (binary relations)
• B ß1 ß n (base lexical entries)
• L (full set of lexical
  entries)
• BltL
• for all ? in L and r in R such that r(?,f)
  in L

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Extending the Lexicon with DLR

• Binary relations between word objects
• Integration of lexical rules at the same level as
  the other grammatical constraints

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Extending the Lexicon with DLR

• Change the Signature

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Extending the Lexicon with DLR
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Extending the Lexicon with DLR
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Outline

• 2 types of lexical generalizations
• Basic Lexicon and its status
• Extending the Lexicon
• with MLR
• with DLR
• Open Questions
• References

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Open Questions

• Distinguishing between lexical and structural
  information
• Status of the input of the lexical rule
• Phantom lexical entries

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References

• Meurers, 2000 Lexical Generalizations in the
  Syntax of German Non-Finite Constructions.Phil.
  Dissertation, Eberhard-Karls-Universität Tübingen
  p.103-135