نتایج جستجو برای: adaboost

تعداد نتایج: 2456  

2004

This paper proposes a learning scheme based still image super-resolution reconstruction algorithm. Superresolution reconstruction is proposed as a binary classification problem and can be solved by conditional class probability estimation. Assuming the probability takes the form of additive logistic regression function, AdaBoost algorithm is used to predict the probability. Experiments on face ...

Journal: :The Journal of the Korea institute of electronic communication sciences 2013

Journal: :Journal of Broadcast Engineering 2014

2009
Zhi-Hua Zhou Yang Yu

1.

Journal: :CoRR 2015
Louis Fortier-Dubois François Laviolette Mario Marchand Louis-Emile Robitaille Jean-Francis Roy

We first present a general risk bound for ensembles that depends on the Lp norm of the weighted combination of voters which can be selected from a continuous set. We then propose a boosting method, called QuadBoost, which is strongly supported by the general risk bound and has very simple rules for assigning the voters’ weights. Moreover, QuadBoost exhibits a rate of decrease of its empirical e...

Journal: :Neurocomputing 2010
Vanessa Gómez-Verdejo Jerónimo Arenas-García Aníbal R. Figueiras-Vidal

Real Adaboost ensembles with weighted emphasis (RA-we) on erroneous and critical (near the classification boundary) samples have recently been proposed, leading to improved performance when an adequate combination of these terms is selected. However, finding the optimal emphasis adjustment is not an easy task. In this paper, we propose to make a fusion of the outputs of RA-we ensembles trained ...

2008
Ludwig Lausser Friedhelm Schwenker Günther Palm

This paper introduces a visual zebra crossing detector based on the Viola-Jones approach. The basic properties of this cascaded classifier and the use of integral images are explained. Additional preand postprocessing for this task are introduced and evaluated.

2017
Paul K. Edwards Dina Duhon Suhail Shergill

Adaboost is a machine learning algorithm that builds a series of small decision trees, adapting each tree to predict difficult cases missed by the previous trees and combining all trees into a single model. We will discuss the AdaBoost methodology and introduce the extension called Real AdaBoost. Real AdaBoost comes from a strong academic pedigree: its authors are pioneers of machine learning a...

2011
Jerome Friedman Trevor Hastie Saharon Rosset Robert Tibshirani Ji Zhu

We congratulate the authors for their interesting papers on boosting and related topics. Jiang deals with the asymptotic consistency of Adaboost. Lugosi and Vayatis study the convex optimization of loss functions associated with boosting. Zhang studies the loss functions themselves. Their results imply that boosting-like methods can reasonably be expected to converge to Bayes classifiers under ...

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