| Texto completo | |
| Autor(es): |
Paulovich, Fernando V.
;
Oliveira, Maria Cristina F.
;
Minghim, Rosane
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | 2009 XXII BRAZILIAN SYMPOSIUM ON COMPUTER GRAPHICS AND IMAGE PROCESSING (SIBGRAPI 2009); v. N/A, p. 2-pg., 2007-01-01. |
| Resumo | |
Multidimensional projections map data points, defined in a high-dimensional data space, into a 1D, 2D or 3D representation space. Such a mapping may be typically achieved with dimensional reduction, clustering, or force directed point placement. Projections can be displayed and navigated by data analysts by means of visual representations, which may vary from points on a plane to graphs, surfaces or volumes. Typically, projections strive to preserve distance relationships amongst data points, as defined in the original space. Information loss is inevitable and the projection approach defines the extent to which the distance preserving goal is attained. We introduce PEx - the Projection Explorer - a visualization tool for mapping and exploration of high-dimensional data via projections. A set of examples - on both structured (table) and unstructured (text) data - illustrate how projection based visualizations, coupled with appropriate exploration tools, offer a flexible set-up for multidimensional data exploration. The projections in PEx handle relatively large data sets at a computational cost adequate to user interaction. (AU) | |
| Processo FAPESP: | 04/01756-2 - Haim Levkowitz | University Massachusetts - Estados Unidos |
| Beneficiário: | Maria Cristina Ferreira de Oliveira |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Internacional |
| Processo FAPESP: | 04/09888-5 - Infovis2: um repositório de técnicas de visualização de informação e mineração visual de dados |
| Beneficiário: | Rosane Minghim |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 03/02815-0 - Estruturas de dados topologicas e geracao de malhas em dominios definidos a partir de amostras. |
| Beneficiário: | Luis Gustavo Nonato |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 04/07866-4 - Tecnicas geometricas para analise visual de dados: integrando mineracao e visualizacoes. |
| Beneficiário: | Fernando Vieira Paulovich |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |