نتایج جستجو برای: روشهای دادهکاوی svm

تعداد نتایج: 44367  

2011
Jair Cervantes Asdrúbal López Chau Farid García Adrián Trueba

In this paper we present a new algorithm to speed up the training time of Support Vector Machines (SVM). SVM has some important properties like solid mathematical background and a better generalization capability than other machines like for example neural networks. On the other hand, the major drawback of SVM occurs in its training phase, which is computationally expensive and highly dependent...

2011
Vikramaditya Jakkula

In this tutorial we present a brief introduction to SVM, and we discuss about SVM from published papers, workshop materials & material collected from books and material available online on the World Wide Web. In the beginning we try to define SVM and try to talk as why SVM, with a brief overview of statistical learning theory. The mathematical formulation of SVM is presented, and theory for the...

2005
Thanh-Nghi Do François Poulet

We present a new support vector machine (SVM) algorithm and graphical methods for mining very large datasets. We develop the active selection of training data points that can significantly reduce the training set in the SVM classification. We summarize the massive datasets into interval data. We adapt the RBF kernel used by the SVM algorithm to deal with this interval data. We only keep the dat...

2004
Author

We present a new support vector machine (SVM) algorithm and graphical methods for mining very large datasets. We develop the active selection of training data points that can significantly reduce the training set in the SVM classification. We summarize the massive datasets into interval data. We adapt the RBF kernel used by the SVM algorithm to deal with this interval data. We only keep the dat...

2007
Chen Liao Shutao Li

In this paper, we propose a support vector machine (SVM) ensemble classification method. Firstly, dataset is preprocessed by Wilcoxon rank sum test to filter irrelevant genes. Then one SVM is trained using the training set, and is tested by the training set itself to get prediction results. Those samples with error prediction result or low confidence are selected to train the second SVM, and al...

Journal: :IJBIDM 2005
Jiaqi Wang Xindong Wu Chengqi Zhang

Support vector machines (SVM) have been applied to build classifiers, which can help users make well-informed business decisions. Despite their high generalisation accuracy, the response time of SVM classifiers is still a concern when applied into real-time business intelligence systems, such as stock market surveillance and network intrusion detection. This paper speeds up the response of SVM ...

ژورنال: :نشریه علمی-پژوهشی مهندسی معدن 2015
حمید گرانیان سید حسن طباطبایی هوشنگ اسدی هارونی آرمان محمدی

محدوده اکتشافی داشکسن از دو کانسار ساری گونای و آق­داغ تشکیل شده است. کانسار طلای اپی ترمال ساری گونای با ذخیره 120 میلیون تن با عیار متوسط 2 گرم بر تن مهم­ترین کانسار طلای ایران در کلاس جهانی است. با استفاده از داده های ژئوشیمیایی محیط خاکی و به کمک دو روش طبقه بندی آنالیز تمایز (lda و qda) و ماشین بردار پشتیبان (c-svm و nu-svm) وضعیت کانی زایی طلا در این کانسار مدل سازی شده است. پارامتر شاخص ...

2016
Rengan Xu Dounia Khaldi Abid M. Malik Barbara Chapman

GPUs have been successfully applied in scientific computing in the last decade. Many machine learning algorithms have also used GPUs to accelerate their computations. This includes the Support Vector Machine (SVM) which is a classical machine learning algorithm that has been successfully used in many applications such as text classification and image recognition. There have been many open-sourc...

2013
Jörg Stork Ricardo Ramos Patrick Koch Wolfgang Konen

Support Vector Machines (SVM) are strong classifiers, but large data sets might lead to prohibitively long computation times and high memory requirements. SVM ensembles, where each single SVM sees only a fraction of the data, can be an approach to overcome this barrier. In continuation of related work in this field we construct SVM ensembles with Bagging and Boosting. As a new idea we analyze S...

Journal: :Expert Syst. Appl. 2008
Shih-Wei Lin Kuo-Ching Ying Shih-Chieh Chen Zne-Jung Lee

Support vector machine (SVM) is a popular pattern classification method with many diverse applications. Kernel parameter setting in the SVM training procedure, along with the feature selection, significantly influences the classification accuracy. This study simultaneously determines the parameter values while discovering a subset of features, without reducing SVM classification accuracy. A par...

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