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Yu Zhang

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categorical-data

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3	Features that correspond to rare events: how rare is “too rare” to be informative?
2	Is there any advantage of using MEMM instead of CRF for named-entity recognition?
2	How to obtain the inverse of a matrix while solving an equation?
2	About the derivation of group Lasso
1	Difference between semi-supervised learning and prediction?

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3 categorical-data	2 lasso
3 rare-events	2 regularization
3 feature-selection	2 convolution
3 many-categories	2 matrix
2 machine-learning × 3	2 matrix-decomposition

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