Elisabet Comelles

Also published as: E. Comelles


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VERTa: a Linguistically-motivated Metric at the WMT15 Metrics Task
Elisabet Comelles | Jordi Atserias
Proceedings of the Tenth Workshop on Statistical Machine Translation


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VERTa participation in the WMT14 Metrics Task
Elisabet Comelles | Jordi Atserias
Proceedings of the Ninth Workshop on Statistical Machine Translation

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VERTa: Facing a Multilingual Experience of a Linguistically-based MT Evaluation
Elisabet Comelles | Jordi Atserias | Victoria Arranz | Irene Castellón | Jordi Sesé
Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)

There are several MT metrics used to evaluate translation into Spanish, although most of them use partial or little linguistic information. In this paper we present the multilingual capability of VERTa, an automatic MT metric that combines linguistic information at lexical, morphological, syntactic and semantic level. In the experiments conducted we aim at identifying those linguistic features that prove the most effective to evaluate adequacy in Spanish segments. This linguistic information is tested both as independent modules (to observe what each type of feature provides) and in a combinatory fastion (where different kinds of information interact with each other). This allows us to extract the optimal combination. In addition we compare these linguistic features to those used in previous versions of VERTa aimed at evaluating adequacy for English segments. Finally, experiments show that VERTa can be easily adapted to other languages than English and that its collaborative approach correlates better with human judgements on adequacy than other well-known metrics.


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VERTa: Linguistic features in MT evaluation
Elisabet Comelles | Jordi Atserias | Victoria Arranz | Irene Castellón
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

In the last decades, a wide range of automatic metrics that use linguistic knowledge has been developed. Some of them are based on lexical information, such as METEOR; others rely on the use of syntax, either using constituent or dependency analysis; and others use semantic information, such as Named Entities and semantic roles. All these metrics work at a specific linguistic level, but some researchers have tried to combine linguistic information, either by combining several metrics following a machine-learning approach or focusing on the combination of a wide variety of metrics in a simple and straightforward way. However, little research has been conducted on how to combine linguistic features from a linguistic point of view. In this paper we present VERTa, a metric which aims at using and combining a wide variety of linguistic features at lexical, morphological, syntactic and semantic level. We provide a description of the metric and report some preliminary experiments which will help us to discuss the use and combination of certain linguistic features in order to improve the metric performance


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Document-Level Automatic MT Evaluation based on Discourse Representations
Elisabet Comelles | Jesús Giménez | Lluís Màrquez | Irene Castellón | Victoria Arranz
Proceedings of the Joint Fifth Workshop on Statistical Machine Translation and MetricsMATR


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FreeLing 1.3: Syntactic and semantic services in an open-source NLP library
J. Atserias | B. Casas | E. Comelles | M. González | L. Padró | M. Padró
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)

This paper describes version 1.3 of the FreeLing suite of NLP tools. FreeLing was first released in February 2004 providing morphological analysis and PoS tagging for Catalan, Spanish, and English. From then on, the package has been improved and enlarged to cover more languages (i.e. Italian and Galician) and offer more services: Named entity recognition and classification, chunking, dependency parsing, and WordNet based semantic annotation. FreeLing is not conceived as end-user oriented tool, but as library on top of which powerful NLP applications can be developed. Nevertheless, sample interface programs are provided, which can be straightforwardly used as fast, flexible, and efficient corpus processing tools. A remarkable feature of FreeLing is that it is distributed under a free-software LGPL license, thus enabling any developer to adapt the package to his needs in order to get the most suitable behaviour for the application being developed.


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The FAME Speech-to-Speech Translation System for Catalan, English, and Spanish
Victoria Arranz | Elisabet Comelles | David Farwell
Proceedings of Machine Translation Summit X: Papers

This paper describes the evaluation of the FAME interlingua-based speech-to-speech translation system for Catalan, English and Spanish. This system is an extension of the already existing NESPOLE! that translates between English, French, German and Italian. This article begins with a brief introduction followed by a description of the system architecture and the components of the translation module including the Speech Recognizer, the analysis chain, the generation chain and the Speech Synthesizer. Then we explain the interlingua formalism used, called Interchange Format (IF). We show the results obtained from the evaluation of the system and we describe the three types of evaluation done. We also compare the results of our system with those obtained by a stochastic translator which has been independently developed over the course of the FAME project. Finally, we conclude with future work.


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A speech-to-speech translation system for Catalan, Spanish, and English
Victoria Arranz | Elisabet Comelles | David Farwell | Climent Nadeu | Jaume Padrell | Albert Febrer | Dorcas Alexander | Kay Peterson
Proceedings of the 6th Conference of the Association for Machine Translation in the Americas: Technical Papers

In this paper we describe the FAME interlingual speech-to- speech translation System for Spanish, Catalan and English which is intended to assist users in the reservation of a hotel room when calling or visiting abroad. The System has been developed as an extension of the existing NESPOLE! translation system [4] which translates between English, German, Italian and French. After a brief introduction we describe the Spanish and Catalan System components including speech recognition, transcription to IF mapping, IF to text generation and speech synthesis. We also present a task-oriented evaluation method used to inform about system development and some preliminary results.