The Answer Validation Exercise at the Cross Language Evaluation Forum is aimed at developing systems able to decide whether the answer of a Question Answering system is correct or not. We present here the exercise description, the changes in the evaluation methodology with respect to the first edition, and the results of this second edition (AVE 2007). The changes in the evaluation methodology ...

This paper reports on the performance of a new system for recognizing textual entailment. We present a brief overview of the CERES system and summarize its semantic alignment method for determining entailment. Then, we describe the experiments that were performed, both official and subsequently, against the RTE4 test dataset. We also report on comparison runs against the previous RTE3 developme...

A multidrug-resistant variant of the human HL-60 promyelocytic leukemia cell line (HL-60/MX2) has been isolated in vitro by subcultiiring these cells in progressively increasing concentrations of mitovaut rone. The MX2 cells are cross-resistant to etoposide, teniposide, bisantrene, dactinontycin, 4'-(9-acridinylamino)methanesulfon-m-anisididc, and the anthracyclines daunorubicin and doxorubicin...

A 15,500 molecular-weight fraction of a pyran copolymer, (MVE-2) was investigated for its therapeutic efficacy against artifical lung métastases of a weakly ¡mmunogenic sponta neous fibrosarcoma (NFSa), a relatively strongly immunogenic fibrosarcoma (FSa), a moderately immunogenic spontaneous mammary carcinoma (MCa-K), and a weakly immunogenic spontaneous mammary carcinoma (MDAH-MCa-4) syngen...

this study was motivated by three factors, which also contribute to its significance for today’s academic writing. first, research articles are the significant means of communication between the writers all over the world. second, persuasion and organization are crucial notions in academic writing where the authors have to consider the academic audiences and their needs.  third, some writers ar...

Uno de los problemas recurrentes de cualquier área de conocimiento es la organización y explicación de los términos que incluye en su campo de estudio. El reciente avance en el desarrollo de nuevas tecnologías para el trabajo terminológico ha aportado diversas herramientas para tratar de resolver este problema. Una de estas herramientas son los corpus de textos especializados en los cuales se p...

This paper presents an user–centred ontology– and entailment–based Question Answering system. A methodology is proposed in order to carry out the construction of the user knowledge database. This knowledge database allows us to fill the gap between natural language expressions and formal expressions such as database queries. The core of the system relies on an entailment engine capable of deduc...