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Dissertation/ Thesis

Técnicas de projeção para identificação de grupos e comparação de dados multidimensionais usando diferentes medidas de similaridade

Autor: Paulo Joia Filho

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

Técnicas de projeção desempenham papel importante na análise e exploração de dados multidimensionais, já que permitem visualizar informações muitas vezes ocultas na alta dimensão. Esta tese explora o potencial destas técnicas para resolver

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/55/55134/tde-29032016-143247/

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Uncovering Representative Groups in Multidimensional Projections

Autor: Luis Gustavo Nonato, Fabiano Petronetto, Paulo Joia

Publikováno v: Computer Graphics Forum. 34:281-290

Multidimensional projection-based visualization methods typically rely on clustering and attribute selection mechanisms to enable visual analysis of multidimensional data. Clustering is often employed to group similar instances according to their dis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f105b94ec3070008ecca7977cb955b12
https://doi.org/10.1111/cgf.12640

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Projection techniques for group identification and multidimensional data comparison by using different similarity measures

Autor: Paulo Joia, Luis Gustavo Nonato

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa9f846cb1d8dff1ad41dcd65a7eef0f
https://doi.org/10.5753/ctd.2016.9143

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Local Affine Multidimensional Projection

Autor: José Alberto Cuminato, Fernando V. Paulovich, Paulo Joia, Luis Gustavo Nonato, Danilo Barbosa Coimbra

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
ResearcherID

Multidimensional projection techniques have experienced many improvements lately, mainly regarding computational times and accuracy. However, existing methods do not yet provide flexible enough mechanisms for visualization-oriented fully interactive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85739d3ba665d2e579073529623d3f03
https://doi.org/10.1109/tvcg.2011.220

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Spectral image segmentation using image decomposition and inner product-based metric

Autor: Wallace Casaca, Paulo Joia, Luis Gustavo Nonato, Afonso Paiva, Erick Gomez-Nieto

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Image segmentation is an indispensable tool in computer vision applications, such as recognition, detection and tracking. In this work, we introduce a novel user-assisted image segmentation technique which combines image decomposition, inner product-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::054a4b0a8ab06ca9575e8470960143fd

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iLAMP: Exploring high-dimensional spacing through backward multidimensional projection

Autor: Luis Gustavo Nonato, Emilio Vital Brazil, Joel Daniels, Mario Costa Sousa, Elisa Portes dos Santos Amorim, Paulo Joia

Publikováno v: IEEE VAST

Ever improving computing power and technological advances are greatly augmenting data collection and scientific observation. This has directly contributed to increased data complexity and dimensionality, motivating research of exploration techniques

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::211e6bdb95531501d49f25723f7a53c2
https://doi.org/10.1109/vast.2012.6400489

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Class-specific metrics for multidimensional data projection applied to CBIR

Autor: Luis Gustavo Nonato, Wallace Casaca, Afonso Paiva, João Batista Ferreira Neto, Erick Gomez-Nieto, Paulo Joia, Glenda Michele Botelho

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Content-based image retrieval is still a challenging issue due to the inherent complexity of images and choice of the most discriminant descriptors. Recent developments in the field have introduced multidimensional projections to burst accuracy in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e511ca53b0bb877ab332bd2236d91b5

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Projection-Based Image Retrieval Using Class-Specific Metrics

Autor: Paulo Joia, Luis Gustavo Nonato, Afonso Paiva, Erick Gomez Nieto, João do Espirito Santo Batista Neto, Glenda Michele Botelho

Publikováno v: SIBGRAPI

Content-based image classification/retrieval based on image descriptors has become an essential component in most database systems. However, most existing systems do not provide mechanisms that enable interactive multi-objective queries, hampering th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c9d6b60abab41eac8d78da0a3e3f8f6
https://doi.org/10.1109/sibgrapi.2011.27

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