Marina Lloberes


2015

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Enhancing FreeLing Rule-Based Dependency Grammars with Subcategorization Frames
Marina Lloberes | Irene Castellón | Lluís Padró
Proceedings of the Third International Conference on Dependency Linguistics (Depling 2015)

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Suitability of ParTes Test Suite for Parsing Evaluation
Marina Lloberes | Irene Castellón | Lluís Padró
Proceedings of the 14th International Conference on Parsing Technologies

2010

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FreeLing 2.1: Five Years of Open-source Language Processing Tools
Lluís Padró | Miquel Collado | Samuel Reese | Marina Lloberes | Irene Castellón
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

FreeLing is an open-source multilingual language processing library providing a wide range of language analyzers for several languages. It offers text processing and language annotation facilities to natural language processing application developers, simplifying the task of building those applications. FreeLing is customizable and extensible. Developers can use the default linguistic resources (dictionaries, lexicons, grammars, etc.) directly, or extend them, adapt them to specific domains, or even develop new ones for specific languages. This paper overviews the recent history of this tool, summarizes the improvements and extensions incorporated in the latest version, and depicts the architecture of the library. Special focus is brought to the fact and consequences of the library being open-source: After five years and over 35,000 downloads, a growing user community has extended the initial threelanguages (English, Spanish and Catalan) to eight (adding Galician, Italian, Welsh, Portuguese, and Asturian), proving that the collaborative open model is a productive approach for the development of NLP tools and resources.

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Spanish FreeLing Dependency Grammar
Marina Lloberes | Irene Castellón | Lluís Padró
Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)

This paper presents the development of an open-source Spanish Dependency Grammar implemented in FreeLing environment. This grammar was designed as a resource for NLP applications that require a step further in natural language automatic analysis, as is the case of Spanish-to-Basque translation. The development of wide-coverage rule-based grammars using linguistic knowledge contributes to extend the existing Spanish deep parsers collection, which sometimes is limited. Spanish FreeLing Dependency Grammar, named EsTxala, provides deep and robust parse trees, solving attachments for any structure and assigning syntactic functions to dependencies. These steps are dealt with hand-written rules based on linguistic knowledge. As a result, FreeLing Dependency Parser gives a unique analysis as a dependency tree for each sentence analyzed. Since it is a resource open to the scientific community, exhaustive grammar evaluation is being done to determine its accuracy as well as strategies for its manteinance and improvement. In this paper, we show the results of an experimental evaluation carried out over EsTxala in order to test our evaluation methodology.