نتایج جستجو برای: decision hyperplanes

تعداد نتایج: 350631  

1997
John Shawe-Taylor Nello Cristianini

Perceptron Decision Trees also known as Linear Machine DTs etc are analysed in order that data dependent Structural Risk Minimization can be applied Data dependent analysis is performed which indicates that choosing the maximal margin hyperplanes at the decision nodes will im prove the generalization The analysis uses a novel technique to bound the generalization error in terms of the margins a...

1999
Wlodzislaw Duch Rafal Adamczak

Multilayer Perceptrons (MLPs) use scalar products to compute weighted activation of neurons providing decision borders using combinations of soft hyperplanes. The weighted fun-in activation function corresponds to Euclidean distance functions used to compute similarities between input and weight vector. Replacing the fan-in activation function by non-Euclidean distance function offers a natural...

Journal: :iranian journal of optimization 2009
farhad hosseinzadeh lotfi f. rezaie balf a. taghavi

this paper investigates a procedure for identifying all efficient hyperplanes of production possibility set (pps). this procedure is based on a method which recommended by pekka j. korhonen[8]. he offered using of lexicographic parametric programming method for recognizing all efficient units in data envelopment analysis (dea). in this paper we can find efficient hyperplanes, via using the para...

A. Taghavi F. Rezaie Balf Farhad Hosseinzadeh Lotfi,

This paper investigates a procedure for identifying all efficient hyperplanes of production possibility set (PPS). This procedure is based on a method which recommended by Pekka J. Korhonen[8]. He offered using of lexicographic parametric programming method for recognizing all efficient units in data envelopment analysis (DEA). In this paper we can find efficient hyperplanes, via using the para...

Anchor DMUs are a new class in the general classification of Decision Making Units (DMUs) in Data Envelopment Analysis (DEA). An anchor DMU in DEA is an extreme-efficient DMU that defines the transition from the efficient frontier to the free-disposability part of the boundary of the Production Possibility Set (PPS). In this paper, the anchor points of the PPS of the CCR model are investigated....

H. Rajabi Mashhadi, S. A. Seyedin, S. H. Zahiri,

The concepts of robust classification and intelligently controlling the search process of genetic algorithm (GA) are introduced and integrated with a conventional genetic classifier for development of a new version of it, which is called Intelligent and Robust GA-classifier (IRGA-classifier). It can efficiently approximate the decision hyperplanes in the feature space. It is shown experime...

1999
Simon Tong Daphne Koller

Maximal margin classifiers are a core technology in modern machine learning. They have strong theoretical justifications and have shown empirical successes. We provide an alternative justification for maximal margin hyperplane classifiers by relating them to Bayes optimal classifiers that use Parzen windows estimations with Gaussian kernels. For any value of the smoothing parameter (the width o...

2002
Włodzisław Duch Krzysztof Gra̧bczewski

Most adaptive systems are homogenous, i.e. they are built from processing elements of the same type. MLP neu-ral networks and decision trees use nodes that partition the input space by hyperplanes. Other types of neural networks use nodes that provide spherical or ellipsoidal decision borders. This may not be the best inductive bias for a given data, frequently requiring large number of process...

Journal: :Proceedings of the American Mathematical Society 2001

M . Borzouei P . Zamani

This paper addresses issue of sensitivity of efficiency classification of variable returns to scale (VRS) technology for enhancing the credibility of data envelopment analysis (DEA) results in practical applications when an additional decision making unit (DMU) needs to be added to the set being considered. It also develops a structured approach to assisting practitioners in making an appropria...

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