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KDD
2010
ACM
218views Data Mining» more  KDD 2010»
15 years 10 months ago
Online multiscale dynamic topic models
We propose an online topic model for sequentially analyzing the time evolution of topics in document collections. Topics naturally evolve with multiple timescales. For example, so...
Tomoharu Iwata, Takeshi Yamada, Yasushi Sakurai, N...
FAW
2009
Springer
118views Algorithms» more  FAW 2009»
15 years 10 months ago
Space-Query-Time Tradeoff for Computing the Visibility Polygon
Abstract. Computing the visibility polygon, VP, of a point in a polygonal scene, is a classical problem that has been studied extensively. In this paper, we consider the problem of...
Mostafa Nouri, Mohammad Ghodsi
ICIP
2007
IEEE
15 years 10 months ago
Finding Optimal Integral Sampling Lattices for a given Frequency Support in Multidimensions
The search for alias-free sampling lattices for a given frequency support, in particular those lattices achieving minimum sampling densities, is a fundamental issue in various app...
Yue M. Lu, Minh N. Do
3DPVT
2004
IEEE
151views Visualization» more  3DPVT 2004»
15 years 10 months ago
Entire Model Acquisition System using Handheld 3D Digitizer
In this paper, a real-time, handheld 3D model acquisition system consisting of a laser projector, a video camera and a turntable is described. The user projects a stripe of light ...
Hiroshi Kawasaki, Ryo Furukawa
ACIVS
2006
Springer
15 years 10 months ago
Constrained Region-Growing and Edge Enhancement Towards Automated Semantic Video Object Segmentation
Most existing object segmentation algorithms suffer from a so-called under-segmentation problem, where parts of the segmented object are missing and holes often occur inside the ob...
L. Gao, J. Jiang, S. Y. Yang
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