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Lexicon and Lexical Rules in HPSG

Lexicon and Lexical Rules in HPSG. Evgenia Ivanova eivanova@sfs.uni-tuebingen.de February 7, 2007. Outline. 2 types of lexical generalizations Basic Lexicon and its status Extending the Lexicon with MLR with DLR Open Questions References. Lexical Generalizations.

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Lexicon and Lexical Rules in HPSG

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  1. Lexicon and Lexical Rules in HPSG Evgenia Ivanova eivanova@sfs.uni-tuebingen.de February 7, 2007

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

  3. Lexical Generalizations • Horizontal Generalizations • Vertical Generalizations

  4. Horizontal Generalizations • Lexical rules • If there is a grammatical word described by D then the corresponding words E’ are also grammatical

  5. Horizontal Generalizations

  6. Lexical Generalizations • Horizontal Generalizations • Vertical Generalizations

  7. Vertical Generalizations • Lexical principles • If a word is described by D, then it is also described by E

  8. Vertical Generalizations Complex vs type antecedents

  9. Vertical Generalizations • Complex vs type antecedents

  10. Vertical Generalizations • Complex vs type antecedents

  11. Vertical Generalizations • Complex vs type antecedents

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

  13. Basic Lexicon • Lexicon external to the theory • Lexicon internal to the theory

  14. Basic Lexicon - Lexicon external to the theory • Extra set of descriptions of word objects • G = <Σ, Θ, L>

  15. Basic Lexicon - Lexicon internal to the theory • Ordinary implicational constraint on word objects • Word Principle wordD1 V D2 V…V Dn

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

  17. Extending the Lexicon • MLR – Meta-Level Lexical Rules (lexical entries) • DLR – Description-Level Level Rules (word objects)

  18. Extending the Lexicon with MLR • R = {r1,…rn} (binary relations) • B = {β1…βn} (base lexical entries) • L: (full set of lexical entries) B<L for all λin L and r in R such that r(λ,φ) in L

  19. Extending the Lexicon with DLR • Binary relations between word objects • Integration of lexical rules at the same level as the other grammatical constraints

  20. Extending the Lexicon with DLR • Change the Signature

  21. Extending the Lexicon with DLR

  22. Extending the Lexicon with DLR

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

  24. Open Questions • Distinguishing between lexical and structural information • Status of the input of the lexical rule • “Phantom” lexical entries

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

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