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» Constrained Inverse Volume Rendering for Planetary Nebulae
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VIS
2004
IEEE
124views Visualization» more  VIS 2004»
14 years 5 months ago
Constrained Inverse Volume Rendering for Planetary Nebulae
Determining the three-dimensional structure of distant astronomical objects is a challenging task, given that terrestrial observations provide only one viewpoint. For this task, b...
Charles D. Hansen, Gordon L. Kindlmann, Marcus A. ...
ADC
2009
Springer
113views Database» more  ADC 2009»
13 years 11 months ago
Ranking-Constrained Keyword Sequence Extraction from Web Documents
Given a large volume of Web documents, we consider problem of finding the shortest keyword sequences for each of the documents such that a keyword sequence can be rendered to a g...
Ding-Yi Chen, Xue Li, Jing Liu, Xia Chen