Range Queries
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Genome-wide identification, characterisation and expression profiling of the ubiquitin-proteasome genes in Biomphalaria glabrata
BACKGROUND Biomphalaria glabrata is the major species used for the study of schistosomiasis-related parasite-host relationships, and understanding its gene regulation may aid in this endeavor. The ubiquitin-proteasome system (UPS) performs post-translational regulation in order to maintain cellular protein homeostasis and is related to several mechanisms, i
Mem. Inst. Oswaldo Cruz. Publicado em: 03/06/2019
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2. Optimizing similarity queries in metric spaces meeting user\ s expectation / Otimização de operações de busca por similaridade em espaços métricos
The complexity of data stored in large databases has increased at very fast paces. Hence, operations more elaborated than traditional queries are essential in order to extract all required information from the database. Therefore, the interest of the database community in similarity search has increased significantly. Two of the well-known types of similarit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2012
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3. Windowing queries: algorithms and data structures. / Consultas de segmentos em janelas: algoritmos e estruturas de dados
In this work we study problems about point and segment query in rectangular windows whose edges are parallel to the axis. Given a set of segments (or points) in the plane. In a first phase these segments are organized in data structures such that queries for segments in windows are done more efficiently. In the second phase windows are given online. The data
Publicado em: 2009
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4. Economia solidária e aprendizagem dialógica : práticas de participação e autogestão e necessidade de uma outra EJA
In this research we seek to investigate the development practice done by Unesp Development Center among settled people of Grupo Viverde de Agroecologia in order to form a community venture (EES). The development process has been done since January 2008, at Terra Nossa Settlement, located between the cities of Bauru and Pederneiras, state of Sao Paulo. It is
Publicado em: 2009
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5. Avaliação da qualidade de funções de similaridade no contexto de consultas por abrangência / Quality evaluation of similarity functions for range queries
Em sistemas reais, os dados armazenados tipicamente apresentam inconsistências causadas por erros de gra a, abreviações, caracteres trocados, entre outros. Isto faz com que diferentes representações do mesmo objeto do mundo real sejam registrados como elementos distintos, causando um problema no momento de consultar os dados. Portanto, o problema invest
Publicado em: 2008
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6. âA Context-based Name Resolution Approach for Semantic Schema Integrationâ
The Semantic Web envisages providing a broad range of services from various application domains on the Web. These services often work in a collaborative way and are based on decision-making tasks, which are performed better if they are able to take into account all the relevant information available. This scenario has given rise to technical developments in
Publicado em: 2008
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7. DBM-Tree: trading height-balancing for performance in metric access methods
Metric Access Methods (MAM) are employed to accelerate the processing of similarity queries, such as the range and the k-nearest neighbor queries. Current methods, such as the Slim-tree and the M-tree, improve the query performance minimizing the number of disk accesses, keeping a constant height of the structures stored on disks (height-balanced trees). How
Journal of the Brazilian Computer Society. Publicado em: 2006-04
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8. Operadores binários para consulta de similaridade em banco de dados multimídia / Binary operators in multimidia data base
The present databases managers are not adequated for complex data manipulation and among them we point out the multimedia data that to speed up the query use the equality operation on the index structure. Equality operations are not much used in operations that involve complex data sence the presence of two elements extremely equal is rare. An operator class
Publicado em: 2006
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9. Indexing complex data in Generic Metric Domains. / Indexação de dados em domínios métricos generalizáveis
The DBMS were developed to manipulate data in numeric domains and short strings, not considering the manipulation of complex data, like multimidia data. The operators em data domain which requests for the total order property have no use to handle complex data. An operator class that fit well to handle this type of data are the similarity operators: range qu
Publicado em: 2005
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10. Efficient algorithms to execute complex similarity queries in RDBMS
Search operations in large sets of complex objects usually rely on similarity-based criteria, due to the lack of other general properties that could be used to compare the objects, such as the total order relationship, or even the equality relationship between pairs of objects, commonly used with data in numeric or short texts domains. Therefore, similarity
Journal of the Brazilian Computer Society. Publicado em: 2004-04
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11. Visualizing the organization and behavior of metric access methods: Applications in similarity queries / "Visualizando a organização e o comportamento de estruturas métricas: aplicações em consultas por similaridade"
The use of computers by an increasing variety of applications led the Database Management Systems (DBMS) to be used to store a wide range of complex data types, such as images, sounds, DNA chains, etc. Queries based on the total order relationship and/or equality can not be applied or have a limited range of applications when performed over these datasets. I
Publicado em: 2004
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12. AnÃlise da InfluÃncia do Fator DistribuiÃÃo Espacial dos Dados no Desempenho de MÃtodos de Acesso Multidimensionais
Um mÃtodo de acesso multidimensional (MAM) à uma estrutura de indexaÃÃo voltada ao suporte de objetos espaciais, especialmente de retÃngulos. O principal objetivo de um MAM à propiciar uma rÃpida obtenÃÃo dos objetos espaciais que satisfazem um certo relacionamento topolÃgico, mÃtrico ou direcional. Neste sentido, o espaÃo indexado à organizado
Publicado em: 2002