Now showing items 1-6 of 6
A scalable re-ranking method for content-based image retrieval
(Information Sciences, 2014-05-01) [Artigo]
Content-based Image Retrieval (CBIR) systems consider only a pairwise analysis, i.e., they measure the similarity between pairs of images, ignoring the rich information encoded in the relations among several images. However, ...
On the effects of each term of the geopotential perturbation along the time I: Quasi-circular orbits
(Advances In Space Research, 2014-09-15) [Artigo]
This paper provides a useful new method to determine minimum and maximum range of values for the degree and order of the geopotential coefficients required for simulations of orbits of satellites around the Earth. The ...
Unsupervised manifold learning using Reciprocal kNN Graphs in image re-ranking and rank aggregation tasks
(Image And Vision Computing, 2014-02-01) [Artigo]
In this paper, we present an unsupervised distance learning approach for improving the effectiveness of image retrieval tasks. We propose a Reciprocal kNN Graph algorithm that considers the relationships among ranked lists ...
Rank Aggregation for Pattern Classifier Selection in Remote Sensing Images
(Ieee Journal Of Selected Topics In Applied Earth Observations And Remote Sensing, 2014-04-01) [Artigo]
In the past few years, segmentation and classification techniques have become a cornerstone of many successful remote sensing algorithms aiming at delineating geographic target objects. One common strategy relies on using ...
Epidemiological Models of Directly Transmitted Diseases: An Approach via Fuzzy Sets Theory
(International Journal Of Uncertainty Fuzziness And Knowledge-based Systems, 2014-10-01) [Artigo]
In this article, we consider environmental and demographic fuzziness when the varying uncertainties are modelled by Fuzzy Set Theory. In the first case the uncertainties are considered in the parameters of the model, ...
Can Drag Force Suppress Fermi Acceleration in a Bouncer Model?
(Mathematical Problems in Engineering, 2009-01-01) [Artigo]
Some dynamical properties for a bouncer model-a classical particle of mass m falling in the presence of a constant gravitational field g and hitting elastically a periodically moving wall-in the presence of drag force that ...