We present an implemented approach for domain-restricted question answering from
structured knowledge sources, based on robust semantic analysis in a hybrid NLP system …

In this paper, we present a Question Answering system based on redundancy and a
Passage Retrieval method that is specifically oriented to Question Answering. We suppose …

QRISTAL [9] is a question answering system making intensive use of natural language
processing both for indexing documents and extracting answers. It ranked first in the EQueR …

Abstract Information Extraction (IE) is a technology for localizing and classifying pieces of
relevant information in unstructured natural language texts and detecting relevant relations …

We describe basic concepts and software architectures for the integration of shallow and
deep (linguistics-based, semantics-oriented) natural language processing (NLP) …

In this paper we present a new method to improve the coverage of Passage Retrieval (PR)
systems when these systems are employed for the Question Answering (QA) tasks. The …

Question answering (QA) is probably one of the most challenging tasks in the field of natural
language processing. It requires search engines that are capable of extracting concise …

En los ltimos a os, la geograf a ha adquirido una importancia cada vez mayor en el
contexto de la recuperaci n de la informaci n (Information Retrieval, IR) y, en general, del …

A method of question answering from multilingual information sources is disclosed. The
present invention discloses a method, a computer system and a program product for …

In this paper we investigate the use of linguistic knowledge in passage retrieval as part of an
open-domain question answering system. We use annotation produced by a deep syntactic …