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Exploring the space of coding matrix classifiers for hierarchical multiclass text categorization
Published on Nov 04, 20112871 Views
One of the ways of approaching a multiclass classification problem is to transform it into several two-class (binary) classification problems. An ensemble of binary classifiers is trained for these ta
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Chapter list
Exploring the Space of Coding Matrix Classifiers for Hierarchical Multiclass Text Categorization00:00
Introduction00:21
Coding Matrices02:05
Exploring the Space of Coding Matrices05:55
Performance as a function of m09:23
Distribution of matrix scores - 114:10
Distribution of matrix scores - 215:59
Fitting a beta distribution - 116:19
Fitting a beta distribution - 217:22
Matrix score vs. row/column separation - 118:09
Matrix score vs. row/column separation - 220:05
Binary classifier performance vs. Ensemble performance21:27
Conclusions23:13