16 documents found, page 1 of 2
Translating Natural Language Questions into CIDOC-CRM SPARQL Queries to Access ...
Varagnolo, Davide; Melo, Dora; Pimenta Rodrigues, IreneTo explore information on the semantic web, SPARQL queries or DL-queries are suitable tools. However, users interested in exploring the content of such knowledge bases often find it challenging to employ formal query languages, as this requires familiarity with the target domain’s representation model. To address these challenges, a question-answering system that automatically translates natural language questi...
Partial DRS, an Intermediate Representation, to Generate SPARQL Queries from NL...
Varagnolo, Davide; Melo, DoraThis paper presents a tool to build an intermediate representation, Partial DRS, a Language-Independent Partial Discourse Representation Structure (DRS), that can be used to generate SPARQL queries from Natural Language (NL) Questions. The Partial DRS builder consists of two main steps: creating a Universal Dependencies (UD) parse and transforming the UD parse using a set of rules into a graph with discourse re...
A Tool to Explore the Population of a CIDOC-CRM Ontology
Varagnolo, Davide; Melo, Dora; Pimenta Rodrigues, IreneThis paper presents a visualising tool to explore the population of an Ontology, obtained through the processes of automatic migration and text information extraction. It was developed in the context of EPISA project, a R&D project that aims to represent the Portuguese National Archives records information in CIDOC-CRM, an ontology developed for museums. The tool allows the migration process developers to visua...
A strategy for archives metadata representation on CIDOC-CRM and knowledge disc...
Melo, Dora; Pimenta Rodrigues, Irene; Varagnolo, DavideThis paper presents a strategy for the semantic migration of Portuguese National Archives records into CIDOC-CRM standard, an ontology developed for museums, within the context of the EPISA project. The approach to automatically populate the CIDOC-CRM is based on Mapping Description Rules to semantically translate the archives descriptive information into CIDOC-CRM representation. The compliance of the CIDOC-CR...
Desigualdades socioeconómicas e geográficas na doença crónica e multimorbilidad...
Melo, DoraTrabalho Final do Curso de Especialização em Administração Hospitalar; RESUMO - Enquadramento: A saúde, para além de uma questão de justiça social, é um direito humano e um bem fundamental reconhecido na Constituição da República Portuguesa, devendo o Estado assegurar a equidade no acesso aos cuidados de saúde. A Lei de Bases da Saúde defende que a condição económica e a localização não devem ser discriminadora...
Semantic Web Search Through Natural Language Dialogues
Melo, Dora; Rodrigues, Irene Pimento; Nogueira, Vitor BeiresThe Semantic Web as a knowledge base gives to the Question Answering systems the capabilities needed to go well beyond the usual word matching in the documents and find a more accurate answer, without needing the user intervention to interpret the documents returned. In this chapter, the authors introduce a Dialogue Manager that, throughout the analysis of the question and the type of expected answer, provides ...
Using a Dialogue Manager to Improve Semantic Web Search
Melo, Dora; Rodrigues, Irene Pimenta; Nogueira, Vitor BeiresQuestion Answering systems that resort to the Semantic Web as a knowledge base can go well beyond the usual matching words in documents and, preferably, find a precise answer, without requiring user help to interpret the documents returned. In this paper, the authors introduce a Dialogue Manager that, through the analysis of the question and the type of expected answer, provides accurate answers to the question...
Using a dialogue manager to improve search in the semantic web
Melo, Dora; Rodrigues, Irene Pimenta; Nogueira, Vitor BeiresQuestion-Answering systems that resort to the Semantic Web as a knowledge base can go well beyond the usual matching words in documents and, preferably, find a precise answer, without requiring user help to interpret the documents returned. In this paper, we introduce a Dialogue Manager that by analysing the question and the type of expected answer, provides accurate answers to questions posed in Natural Langua...
A Review on Cooperative Question-Answering Systems
Melo, Dora; Pimenta Rodrigues, Irene; Beires Nogueira, VitorThe Question-Answering (QA) systems fall in the study area of Information Retrieval (IR) and Natural Language Processing (NLP). Given a set of documents, a QA system tries to obtain the correct answer to the questions posed in Natural Language (NL). Normally, the QA systems comprise three main components: question classification, information retrieval and answer extraction. Question classification plays a major...
Puzzle Out the Semantic Web Search
Melo, Dora; Rodrigues, Irene Pimenta; Nogueira, VitorIn this paper we propose a Cooperative Question Answering System that takes as input natural language queries and is able to return a cooperative answer based on semantic web resources, more specifically DBpedia represented in OWL/RDF as knowledge base and WordNet to build similar questions. Our system resorts to ontologies not only for reasoning but also to find answers and is independent of prior knowledge of...