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Context-Inclusive Approach to Speed-up Function Evaluation for Statistical Queries : An Extended Abstract
Hong Kong, China December 18-December 22
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICDMW.2006.52Sixth IEEE International Conference o ...
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Vijay Gandhi, University of Minnesota
James M. Kang, University of Minnesota
Shashi Shekhar, University of Minnesota
Junchang Ju, Boston University
Eric D. Kolaczyk, Boston University
Sucharita Gopal, Boston University
Many statistical queries such as maximum likelihood estimation involve finding the best candidate model given a set of candidate models and a quality esti- mation function. This problem is common in impor- tant applications like land-use classification at multi- ple spatial resolutions from remote sensing raster data. Such a problem is computationally challenging due to the significant computation cost to evaluate the qual- ity estimation function for each candidate model. A recently proposed method of multiscale, multigranular classification has high computational overhead of func- tion evaluation for various candidate models indepen- dently before comparison. In contrast, we propose a context-inclusive approach that controls the computa- tional overhead based on the context, i.e. the value of the quality estimation function for the best candidate model so far. Experimental results using land-use clas- sification at multiple spatial resolutions from satellite imagery show that the proposed approach reduces the computational cost significantly while providing com- parable classification accuracy.
Citation:
Vijay Gandhi, James M. Kang, Shashi Shekhar, Junchang Ju, Eric D. Kolaczyk, Sucharita Gopal, "Context-Inclusive Approach to Speed-up Function Evaluation for Statistical Queries : An Extended Abstract," icdmw, pp.371-376, Sixth IEEE International Conference on Data Mining - Workshops (ICDMW'06), 2006
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