1 / 25

Understanding Lexical Generalizations in HPSG

Explore types of lexical generalizations, the status of the Basic Lexicon, and extending lexicons with MLR and DLR. Dive into open questions and references for further understanding.

kcarrie
Download Presentation

Understanding Lexical Generalizations in HPSG

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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]

More Related