By Alexander J. Smola, Peter Bartlett, Bernhard Schölkopf, Dale Schuurmans

ISBN-10: 0262194481

ISBN-13: 9780262194488

The idea that of huge margins is a unifying precept for the research of many various methods to the category of information from examples, together with boosting, mathematical programming, neural networks, and aid vector machines. the truth that it's the margin, or self assurance point, of a classification--that is, a scale parameter--rather than a uncooked education errors that concerns has turn into a key software for facing classifiers. This ebook indicates how this concept applies to either the theoretical research and the layout of algorithms.The e-book offers an summary of contemporary advancements in huge margin classifiers, examines connections with different tools (e.g., Bayesian inference), and identifies strengths and weaknesses of the tactic, in addition to instructions for destiny learn. one of the participants are Manfred Opper, Vladimir Vapnik, and beauty Wahba.

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Edu/rvnuria/ Bernhard ScholkopJ Microsoft Research Limited St. microsoft·com/rvbsc/ Alea;ander J. au/rvsmola/ Recently, Jaakkola and Haussler proposed the so-called Fisher kernel to con­ struct discriminative kernel techniques by using generative models. We provide a regularization-theoretic analysis of this approach and extend the set of kernels to a class of natural kernels, all based on generative models with density p(xIO) like the original Fisher kernel. This allows us to incorporate distribution dependent smoothness criteria in a general way.

Over main result Bx B is CSI. 3. 1£ has the independent insertion property. d. induced by 1£ over pairs of sequences of symbols is CSI. Proof The proof is in two stages. It is shown first that any PHMM that satisfies condition 2 may be transformed into an equivalent PHMM in which all states in SAB have symmetric independent joint emission distributions. Next, it is shown that the probability of a realization may be factored so that sequences A and B are independent given the subsequence of states from SAB that occurs in the realization.

They also have proven to be competitive or superior to other learning algorithms in practical applications. In the following we will give references to such situations. 1 Boosting Experimental results show that boosting is able to improve the performance of classifiers significantly. Extensive studies on the UC Irvine dataset, carried out by Freund and Schapire [1996] and Quinlan [1996a] with tree classifiers show the performance of such methods. However, also other learning algorithms can benefit from boosting.

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Advances in Large-Margin Classifiers by Alexander J. Smola, Peter Bartlett, Bernhard Schölkopf, Dale Schuurmans


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