A speech about Boosting. Presenter: Roberto Valenti. The Paper*. *R.Schapire. The boosting approach to Machine Learning An Overview, 2001. I want YOU… . …TO UNDERSTAND. Overview. Introduction Adaboost How Does it work? Why does it work? Demo Extensions Performance & Applications
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Presenter: Roberto Valenti
*R.Schapire. The boosting approach to Machine Learning An Overview, 2001
“An effective method of producing an accurate prediction rule from inaccurate rules”
How does it work?
Base Learner Job:
Why does it work?
e =1/2 - gt
RE(p||q)=p ln(p/q)+(1-p) ln((1-p)/(1-q))
Performance and Applications
Error Rates on Text categorization
Reuters newswire articles
AP newswire headlines
Six Class Text Classification (TREC)
Spoken Language Classification
“How may I help you”
(don’t be mean)