Classification on proximity data with LP-machines
Classification on proximity data with LP-machines
复制标题
使用 LP 机器对邻近数据进行分类
DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
R. C. Williamson
中科院分区:
文献类型:
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作者:
T. Graepel;R. Herbrich;B. Scholkopf;Alex Smola;P. Bartlett;K. Müller;K. Obermayer;R. C. Williamson
We provide a new linear program to deal with classification of data in the case of data given in terms of pairwise proximities. This allows to avoid the problems inherent in using feature spaces with indefinite metric in support vector machines, since the notion of a margin is purely needed in input space where the classification actually occurs. Moreover in our approach we can enforce sparsity in the proximity representation by sacrificing training error. This turns out to be favorable for proximity data. Similar to /spl nu/-SV methods, the only parameter needed in the algorithm is the (asymptotical) number of data points being classified with a margin. Finally, the algorithm is successfully compared with /spl nu/-SV learning in proximity space and K-nearest-neighbors on real world data from neuroscience and molecular biology.