Leonardo Lesmo

Also published as: L. Lesmo


2013

pdf bib
Dependency and Constituency in Translation Shift Analysis
Manuela Sanguinetti | Cristina Bosco | Leonardo Lesmo
Proceedings of the Second International Conference on Dependency Linguistics (DepLing 2013)

2012

pdf bib
The Parallel-TUT: a multilingual and multiformat treebank
Cristina Bosco | Manuela Sanguinetti | Leonardo Lesmo
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

The paper introduces an ongoing project for the development of a parallel treebank for Italian, English and French, i.e. Parallel--TUT, or simply ParTUT. For the development of this resource, both the dependency and constituency-based formats of the Italian Turin University Treebank (TUT) have been applied to a preliminary dataset, which includes the whole text of the Universal Declaration of Human Rights, and sentences from the JRC-Acquis Multilingual Parallel Corpus and the Creative Commons licence. The focus of the project is mainly on the quality of the annotation and the investigation of some issues related to the alignment of data that can be allowed by the TUT formats, also taking into account the availability of conversion tools for display data in standard ways, such as Tiger--XML and CoNLL formats. It is, in fact, our belief that increasing the portability of our treebank could give us the opportunity to access resources and tools provided by other research groups, especially at this stage of the project, where no particular tool -- compatible with the TUT format -- is available in order to tackle the alignment problems.

2011

pdf bib
An Ontology Based Architecture for Translation
Leonardo Lesmo | Alessandro Mazzei | Daniele P. Radicioni
Proceedings of the Ninth International Conference on Computational Semantics (IWCS 2011)

2010

pdf bib
Comparing the Influence of Different Treebank Annotations on Dependency Parsing
Cristina Bosco | Simonetta Montemagni | Alessandro Mazzei | Vincenzo Lombardo | Felice Dell’Orletta | Alessandro Lenci | Leonardo Lesmo | Giuseppe Attardi | Maria Simi | Alberto Lavelli | Johan Hall | Jens Nilsson | Joakim Nivre
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

As the interest of the NLP community grows to develop several treebanks also for languages other than English, we observe efforts towards evaluating the impact of different annotation strategies used to represent particular languages or with reference to particular tasks. This paper contributes to the debate on the influence of resources used for the training and development on the performance of parsing systems. It presents a comparative analysis of the results achieved by three different dependency parsers developed and tested with respect to two treebanks for the Italian language, namely TUT and ISST--TANL, which differ significantly at the level of both corpus composition and adopted dependency representations.

2008

pdf bib
Comparing Italian parsers on a common Treebank: the EVALITA experience
Cristina Bosco | Alessandro Mazzei | Vincenzo Lombardo | Giuseppe Attardi | Anna Corazza | Alberto Lavelli | Leonardo Lesmo | Giorgio Satta | Maria Simi
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)

The EVALITA 2007 Parsing Task has been the first contest among parsing systems for Italian. It is the first attempt to compare the approaches and the results of the existing parsing systems specific for this language using a common treebank annotated using both a dependency and a constituency-based format. The development data set for this parsing competition was taken from the Turin University Treebank, which is annotated both in dependency and constituency format. The evaluation metrics were those standardly applied in CoNLL and PARSEVAL. The results of the parsing results are very promising and higher than the state-of-the-art for dependency parsing of Italian. An analysis of such results is provided, which takes into account other experiences in treebank-driven parsing for Italian and for other Romance languages (in particular, the CoNLL X & 2007 shared tasks for dependency parsing). It focuses on the characteristics of data sets, i.e. type of annotation and size, parsing paradigms and approaches applied also to languages other than Italian.

2007

pdf bib
Multilingual Ontological Analysis of European Directives
Gianmaria Ajani | Guido Boella | Leonardo Lesmo | Alessandro Mazzei | Piercarlo Rossi
Proceedings of the 45th Annual Meeting of the Association for Computational Linguistics Companion Volume Proceedings of the Demo and Poster Sessions

2006

pdf bib
Towards a redundancy elimination algorithm for underspecified descriptions
Leonardo Lesmo | Livio Robaldo | Jelle Gerbrandy
Proceedings of the Fifth International Workshop on Inference in Computational Semantics (ICoS-5)

pdf bib
A Development Tool For Multilingual Ontology-based Conceptual
G. Ajani | G. Boella | L. Lesmo | M. Martin | A Mazzei | P. Rossi
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

This paper introduces a number theoretical and practical issues related to the “Syllabus”. Syllabusis a multi-lingua ontology based tool, designed to improve the applications of the European Directives in the various European countries.

pdf bib
From Natural Language to Databases via Ontologies
Leonardo Lesmo | Livio Robaldo
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

This paper describes an approach to Natural Language access to databases based on ontologies. Their role is to make the central part of the translation process independent both of the specific language and of the particular database schema. The input sentence is parsed and the parse tree is semantically annotated via references to the ontology describing the application. This first step is, of course, language dependent: the parsing process depends on the syntax of the language and the annotation depends on the meaning of words, expressed as links between words and concepts in the ontology. Then, the annotated tree is used to produce an “ontological query”, i.e. a query expressed in terms of paths on the ontology. This second step is entirely language- and DB-independent. Finally, the ontological query is translated into a standard SQL query, on the basis of a concept-to-DB mapping, specifying how each concept and relation is mapped onto the database.

2002

pdf bib
Transformed Subcategorization Frames in Chunk Parsing
Leonardo Lesmo | Vincenzo Lombardo
Proceedings of the Third International Conference on Language Resources and Evaluation (LREC’02)

2000

pdf bib
Automatic Assignment of Grammatical Relations
Leonardo Lesmo | Vincenzo Lombardo
Proceedings of the Second International Conference on Language Resources and Evaluation (LREC’00)

pdf bib
Building a Treebank for Italian: a Data-driven Annotation Schema
Cristina Bosco | Vincenzo Lombardo | Daniela Vassallo | Leonardo Lesmo
Proceedings of the Second International Conference on Language Resources and Evaluation (LREC’00)

pdf bib
Social Goals in Conversational Cooperation
Guido Boella | Rossana Damiano | Leonardo Lesmo
1st SIGdial Workshop on Discourse and Dialogue

1998

pdf bib
Formal aspects and parsing issues of dependency theory
Vincenzo Lombardo | Leonardo Lesmo
COLING 1998 Volume 2: The 17th International Conference on Computational Linguistics

pdf bib
Formal Aspects and Parsing Issues of Dependency Theory
Vincenzo Lombardo | Leonardo Lesmo
36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2

pdf bib
Integration of syntactic and lexical information in a hierarchical dependency grammar
Cristina Barbero | Leonardo Lesmo | Vincenzo Lombardo
Processing of Dependency-Based Grammars

1996

pdf bib
An Earley-type recognizer for dependency grammar
Vincenzo Lombardo | Leonardo Lesmo
COLING 1996 Volume 2: The 16th International Conference on Computational Linguistics

1995

pdf bib
A Practical Dependency Parser
Vincenzo Lombardo | Leonardo Lesmo
Proceedings of the Fourth International Workshop on Parsing Technologies

The working assumption is that cognitive modeling of NLP and engineering solutions to free text parsing can converge to optimal parsing. The claim of the paper is that the methodology to achieve such a result is to develop a concrete environment with a flexible parser, that allows the testing of various psycholinguistic strategies on real texts. In this paper we outline a flexible parser based on a dependency grammar.

1992

pdf bib
The Assignment of Grammatical Relations in Natural Language Processing
Leonardo Lesmo | Vincenzo Lombardo
COLING 1992 Volume 4: The 14th International Conference on Computational Linguistics

1988

pdf bib
Interpretation of Noun Phrases in Intensional Contexts
Leonardo Lesmo | Paolo Terenziani
Coling Budapest 1988 Volume 1: International Conference on Computational Linguistics

1986

pdf bib
A Logical Formalism for the Representation of Determiners
Barbara Di Eugenio | Leonardo Lesmo | Paolo Pogliano | Pietro Torasso | Francesco Urbano
Coling 1986 Volume 1: The 11th International Conference on Computational Linguistics

1985

pdf bib
Analysis of Conjunctions in a Rule-Based Parser
Leonardo Lesmo | Pietro Torasso
23rd Annual Meeting of the Association for Computational Linguistics

1984

pdf bib
Interpreting Syntactically Ill-Formed Sentences
Leonardo Lesmo | Pietro Torasso
10th International Conference on Computational Linguistics and 22nd Annual Meeting of the Association for Computational Linguistics

1983

pdf bib
A Flexible Natural Language Parser Based on a Two-Level Representation of Syntax
Leonardo Lesmo | Pietro Torasso
First Conference of the European Chapter of the Association for Computational Linguistics