نتایج جستجو برای: class support vector machine

تعداد نتایج: 1381753  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد 1376

in this thesis our aim is to construct vector field in r3 for which the corresponding one-dimensional maps have certain discontinuities. two kinds of vector fields are considered, the first the lorenz vector field, and the second originally introced here. the latter have chaotic behavior and motivate a class of one-parameter families of maps which have positive lyapunov exponents for an open in...

Journal: :Expert Systems With Applications 2022

The twin support vector machine and its extensions have made great achievements in dealing with binary classification problems. However, it suffers from difficulties effective solution of multi-classification fast model selection. This work devotes to the regularization parameter tuning algorithm for multi-class machine. Specifically, a novel sample data set partition strategy is first adopted,...

Journal: :سنجش از دور و gis ایران 0
محسن حسن زاده شاهراجی دانشگاه خواجه نصیرالدین طوسی علی محمد زاده دانشگاه خواجه نصیرالدین طوسی

in the last two decade the use of aerial laser scanner (als) or lidar (light detection and ranging) sensor in geomatics engineering and surveying application has augmented significantly . the main reason of the mentioned phenomenon is the reliability and accuracy of the data obtained by lidar sensors. the output of lidar is unclassified 3d point cloud. classification of the lidar point clouds i...

Journal: :journal of advances in computer research 2015
maziar kazemi muhammad yousefnezhad saber nourian

classification ensemble, which uses the weighed polling of outputs, is the art of combining a set of basic classifiers for generating high-performance, robust and more stable results. this study aims to improve the results of identifying the persian handwritten letters using error correcting output coding (ecoc) ensemble method. furthermore, the feature selection is used to reduce the costs of ...

Journal: :journal of chemical health risks 0
alireza jalali department of chemistry, college of basic sciences, shahrood branch, islamic azad university, shahrood, iran mehdi nekoei department of chemistry, college of basic sciences, shahrood branch, islamic azad university, shahrood, iran majid mohammadhosseini department of chemistry, college of basic sciences, shahrood branch, islamic azad university, shahrood, iran

a robust and reliable quantitative structure-property relationship (qspr) study was established to forecast the melting points (mps)  of a diverse and long set including 250 drug-like compounds. based on the calculated descriptors by dragon software package, to detect homogeneities and to split the whole dataset into training and test sets, a principal component analysis (pca) approach was used...

2012
Hany Alashwal Safaai Deris Razib M. Othman

Predicting protein-protein interactions represent a key step in understanding proteins functions. This is due to the fact that proteins usually work in context of other proteins and rarely function alone. Machine learning techniques have been applied to predict protein-protein interactions. However, most of these techniques address this problem as a binary classification problem. Although it is...

2005
Zhonghui Hu Rupo Yin Yuangui Li Xiaoming Xu

How to extend standard support vector machines to solve multi-class classification problem and yield the outputs in the frame of Dempster-Shafer theory is useful. The multi-class probability support vector machine is proposed, firstly. The Dempster-Shafer theory based multi-class support vector machine is designed by constructing probability support vector machines for binary classification usi...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
hesam torabi dashti ali masoudi-nejad

structural repetitive subsequences are most important portion of biological sequences, which play crucial roles on corresponding sequence’s fold and functionality. biggest class of the repetitive subsequences is “transposable elements” which has its own sub-classes upon contexts’ structures. many researches have been performed to criticality determine the structure and function of repetitive su...

2010
Tobias Glasmachers

Steinwart was the first to prove universal consistency of support vector machine classification. His proof analyzed the ‘standard’ support vector machine classifier, which is restricted to binary classification problems. In contrast, recent analysis has resulted in the common belief that several extensions of SVM classification to more than two classes are inconsistent. Countering this belief, ...

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