نتایج جستجو برای: classification and regression tree cart

تعداد نتایج: 16909168  

ژورنال: علوم آب و خاک 2013
علی‌رضا سفیانیان, , مصطفی ترکش اصفهانی, , مهناز اعرابی, ,

Physicochemical characteristics of soil, land cover/use and human activities have effects on heavy metals distribution. In this study, we applied Classification and Regression Tree model (CART) to predict the spatial distribution of zinc in surface soil of Hamadan province under Geographic Information System environment. Two approaches were used to build the model. In the first approach, 10% ...

Journal: :journal of the iranian chemical research 0
vali zare-shahabadi department of chemistry, mahshahr branch, islamic azad university, mahshahr, iran

the classification and regression trees (cart) possess the advantage of being able to handlelarge data sets and yield readily interpretable models. in spite to these advantages, they are alsorecognized as highly unstable classifiers with respect to minor perturbations in the training data.in the other words methods present high variance. fuzzy logic brings in an improvement in theseaspects due ...

2013
Zeinab rashidi Sayed mohsen hosseini

Aims: This study aimed at predicting bankruptcy based on two data mining techniques, i.e. logistic regression and classification and regression tree (CART). Study design: This was an applied, descriptiveanalytical, cross-sectional study. Place and Duration of Study: This research was carried out in Iran. Annual financial statements of companies in Tehran stock market (Iran) during 1999-2010 wer...

Journal: :IEICE Transactions 2008
Ji-Yeoun Lee Sangbae Jeong Hong-Shik Choi Minsoo Hahn

This work proposes new features to improve the pathological voice quality classification performance. They are the means, the variances, and the perturbations of the higher-order statistics (HOS) such as the skewness and the kurtosis. The HOS-based features show meaningful differences among normal, grade 1, grade 2, and grade 3 voices classified in the GRBAS scale. The jitter, the shimmer, the ...

2016
Aman Singh Babita Pandey

In India and across the globe, liver disease is a serious area of concern in medicine. Therefore, it becomes essential to use classification algorithms for assessing the disease in order to improve the efficiency of medical diagnosis which eventually leads to appropriate and timely treatment. The study accordingly implemented various classification algorithms including linear discriminant analy...

Journal: :Pattern Recognition 2012
Servane Gey

Non asymptotic risk bounds for Classification And Regression Trees (CART) classifiers are obtained in the binary supervised classification framework under a margin assumption on the joint distribution of the covariates and the labels. These risk bounds are derived conditionally on the construction of the maximal binary tree and allow to prove that the linear penalty used in the CART pruning alg...

2014
Sharon Koon Yaacov Petscher Barbara R. Foorman

Educators need to understand how students are identified as at risk for reading problems. This study found that the classification and regression tree (CART) model—a type of predictive modeling that presents results in an easy-to-interpret “tree” format—predicted poor performance on the reading comprehension subtest of the Stanford Achievement Test as accurately as the logistic regression model...

2009
Chee Wei Lee Yong Haur Tay Tunku Abdul Rahman

In this paper, we study the use of boosted weak classifiers selected with AdaBoost algorithm in object detection. Our work is motivated by the good performance of AdaBoost in selecting discriminative features and the effectiveness of Classification and Regression Tree (CART) compared with other classification methods. First, we study the cascaded structure of the boosted weak classifier detecto...

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