REVERSING F-STRUCTURE REWRITING FOR GENERATION FROM MEANING REPRESENTATIONS

We describe the design of an LFG-based generation system tha t provides a framework for empirical studies on the choice among gramma tical paraphrases (i.e. syntactic alternations), as an effect of inte rac ing soft constraints. To be able to study the relevant variation, we exte nd he XLE generation architecture so it no longer departs from standard f-s tructures, but from a more abstract level of (meaning) representation. This rep res ntation is constructed by means of XFR term-rewrite rules. We discuss the d esign of the meaning representation in the light of the surface realisat ion task. In particular, we address the problem of obtaining a transfer grammar that reverses meaning construction, taking into account the generation p erformance.

[1]  Jonas Kuhn.  Generation and Parsing in Optimality Theoretic Syntax Issues in the Formalization of OT-LFG , 2007 .

[2]  Stefan Riezler,et al.  Grammatical Machine Translation , 2006, NAACL.

[3]  Mark Johnson,et al.  Learning OT constraint rankings using a maximum entropy model , 2003 .

[4]  Jürgen Wedekind,et al.  Semantic-driven Generation with LFG- and PATR-style Grammars , 1999, Comput. Linguistics.

[5]  Yvette Graham,et al.  Deep Syntax in Statistical Machine Translation , 2011 .

[6]  Josef van Genabith,et al.  Finding Common Ground: Towards a Surface Realisation Shared Task , 2010, INLG.

[7]  Leo Wanner,et al.  Broad Coverage Multilingual Deep Sentence Generation with a Stochastic Multi-Level Realizer , 2010, COLING.

[8]  Martin C. Emele,et al.  Semantic-based Transfer , 1996, COLING.

[9]  J. Bresnan,et al.  Predicting syntax: Processing dative constructions in American and Australian varieties of English , 2010 .

[10]  Sina Zarrieß,et al.  Developing German Semantics on the basis of Parallel LFG Grammars , 2009 .

[11]  Erik Velldal,et al.  Empirical Realization Ranking , 2009 .

[12]  Aoife Cahill,et al.  Stochastic Realisation Ranking for a Free Word Order Language , 2007, ENLG.

[13]  Jeroen van de Weijer,et al.  Optimality theory : phonology, syntax, and acquisition , 2000 .

[14]  Aoife Cahill,et al.  Incorporating Information Status into Generation Ranking , 2009, ACL/IJCNLP.

[15]  R. Harald Baayen,et al.  Predicting the dative alternation , 2007 .

[16]  Mark Johnson,et al.  Parsing the Wall Street Journal using a Lexical-Functional Grammar and Discriminative Estimation Techniques , 2002, ACL.

[17]  Faithfulness Violations and Bidirectional Optimization , 2000 .

[18]  Wolfgang Wahlster,et al.  Verbmobil: Foundations of Speech-to-Speech Translation , 2000, Artificial Intelligence.

[19]  Stefan Riezler,et al.  EXPLOITING F-STRUCTURE INPUT FOR SENTENCE CONDENSATION , 2004 .

[20]  Jonas Kuhn,et al.  Optimality-Theoretic Syntax: A Declarative Approach , 2003 .

[21]  Gerhard Jäger,et al.  Maximum Entropy Models and Stochastic Optimality Theory , 2003 .

[22]  Geoffrey Sampson,et al.  The Oxford Handbook of Computational Linguistics , 2003, Lit. Linguistic Comput..

[23]  Ronald M. Kaplan,et al.  LFG Generation Produces Context-free Languages , 2000, COLING.

[24]  Aoife Cahill.  Correlating Human and Automatic Evaluation of a German Surface Realiser , 2009, ACL/IJCNLP.