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Incorporating prior knowledge into learning by dividing training data |
Baoliang LU1,2( ), Xiaolin WANG1, Masao UTIYAMA3 |
1. Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. MOE-Microsoft Key Lab for Intelligent Computing and Intelligent Systems, Shanghai Jiao Tong University, Shanghai 200240, China; 3. National Institute of Information and Communications Technology (NICT), Kyoto 619-0288, Japan |
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Abstract In most large-scale real-world pattern classification problems, there is always some explicit information besides given training data, namely prior knowledge, with which the training data are organized. In this paper, we proposed a framework for incorporating this kind of prior knowledge into the training of min-max modular (M3) classifier to improve learning performance. In order to evaluate the proposed method, we perform experiments on a large-scale Japanese patent classification problem and consider two kinds of prior knowledge included in patent documents: patent’s publishing date and the hierarchical structure of patent classification system. In the experiments, traditional support vector machine (SVM) and M3-SVM without prior knowledge are adopted as baseline classifiers. Experimental results demonstrate that the proposed method is superior to the baseline classifiers in terms of training cost and generalization accuracy. Moreover,M3-SVM with prior knowledge is found to be much more robust than traditional support vector machine to noisy dated patent samples, which is crucial for incremental learning.
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Keywords
prior knowledge
patent classification
support vector machine
min-max modular network
task decomposition
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Corresponding Author(s):
LU Baoliang,Email:bllu@sjtu.edu.cn, mutiyama@nict.go.jp
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Issue Date: 05 March 2009
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