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Mostrando ítems 31-40 de 2078
On the Data Complexity of Consistent Query Answering
(Springer, 2015)
The framework of database repairs is a principled approach to managing inconsistency in databases. In particular, the consistent answers of a query on an inconsistent database provide sound semantics and the guarantee that ...
MWAND: A New Early Termination Algorithm for Fast and Efficient Query Evaluation
Nowadays, current information systems are so large and maintain huge amount of data. At every time, they process millions of documents and millions of queries. In order to choose the most important responses from this ...
Desenvolvimento de uma ferramenta baseada na linguagem Query by Example para criação e execução de consultas SQLDevelopment of a tool based on the Query by Example language for creating and executing SQL queries
(Universidade Federal de UberlândiaBrasilSistemas de Informação, 2018)
Consultas por similaridade com diversidade otimizadas pela técnica OMNI em sistemas gerenciadores de banco de dados relacionais
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de InformáticaEngenharia de ComputaçãoUTFPR, 2021-11-26)
The actual data bases has beyond convencional data like text and numbers, new datas known as complex data: images, audios, videos, etc. A current problem in this area are nding a relevant answear in a redundant data bases ...
Automatic Query expansion based on tag recommendation
(Universidade Federal de Minas GeraisUFMG, 2013-08-27)
Query expansion is the process of adding new terms to queries posed by users in an attempt to improve search results. This is especially useful when the original query is not able to unequivocally express the user information ...
Unsupervised Effectiveness Estimation for Image Retrieval Using Reciprocal Rank Information
(2015-10-30)
In this paper, we present an unsupervised approach for estimating the effectiveness of image retrieval results obtained for a given query. The proposed approach does not require any training procedure and the computational ...