18-classification2

18-classification2 - Classification II CS273 Data and...

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Classification II CS273 Data and Knowledge Bases CS273 - Data and Knowledge Bases Xif Y Xifeng Yan Computer Science University of California at Santa Barbara
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Department of Computer Science Announcements Readings: Christopher J. C. Burges, 1998. A tutorial on support t hi f tt iti D t Mi i d vector machines for pattern recognition. Data Mining and Knowledge Discovery , 2 (2), 121–167. Data and Knowledge Bases | University of California at Santa Barbara 2
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Department of Computer Science Classification: A Mathematical Mapping Classification: predicts categorical class labels E.g., Personal homepage classification x = (x 1 , x 2 , x 3 , …), y i = +1 or 1 x 1 : # of a word “homepage” x 2 : # of a word “welcome” Mathematically x X = n , y Y = {+1, 1} X , y Y { 1, 1} We want to find a function f: X Y Data and Knowledge Bases | University of California at Santa Barbara 3
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