With the advances in remote sensing, various machine learning techniques could be applied to study variable relationships. Although prediction models obtained using machine learning techniques has proven to be suitable for predictions, they do not explicitly provide means for determining input-output variable relevance. We investigated the issue of relevance assignment for multiple machine learning models applied to remote sensing variables in the context of terrestrial hydrology. The relevance is defined as the influence of an input variable with respect to predicting the output result. We introduce a methodology for assigning relevance using various machine learning methods. The learning methods we use include regression tree, support vector machine, and K-nearest neighbor. We derive the relevance computation scheme for each learning method and propose a method for fusing relevance assignment results from multiple learning techniques by averaging and voting mechanism. All methods are evaluated in terms of relevance accuracy estimation with synthetic and measured data.
Relevance assignment and fusion of multiple learning methods applied to remote sensing image analysis
2006-01-01
164177 byte
Conference paper
Electronic Resource
English
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