Owen Rambow

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Owen Rambow

• 6 Minutes

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Interests

• Theory
• Syntax its representation and computation (TAG),
  and its relation to discourse, prosody, semantics
  
• Technologies/Resources
• Generation sentence planning realization
• Dependency parsing
• Dependency corpora
• Applications
• Generation applications (reports)
• Machine translation
• Dialog systems
• Summarization

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Thesis (1994)

• Formal representation for German syntax
• Issue combination of fixed and free word-order
• Solution use description of trees, not trees (as
  in TAG)
• Current syntax interests Tagalog, Arabic

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Generation Sentence Planning

• Work with Lyn Walker
• Issue choosing syntactic constructions to
  achieve communicative goals in dialog systems
• Idea use machine learning on preference-ranked
  options
• Ongoing multimedia/speech output (with Noémie)
• Open issue individual preferences
• Summarization?

5
Generation Realization

• Joint work with Srinivas Bangalore, John Chen
• Use of declarative TAG grammar (hand-written or
  extracted)
• Approach stochastic choice on trees using
  arborescent linear language models
• Open issues factoring of syntactic/lexical
  choice

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Dependency Parsing

• Joint work with Alexis Nasr, Srinivas Bangalore,
  John Chen
• Idea transform TAG trees into FSMs/FSTs
• Parse yields dependency tree
• Parse FSMs CKY-style
• Or, compose FSTs to a single large FST
• Open issues supertagging, probabilistic model,
  domain adaptation

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Corpora

• PropBank (Penn project) annotation of PTB with
  predicate-argument structures
• Verb-specific arg roles, lexicon
• Project mapping PropBank to other, more
  semantic forms of annotation (VerbNet, LCS,
  Prague)