نتایج جستجو برای: M5 decision tree

تعداد نتایج: 498492  

Thermal pasteurization is known as the most common method in food processing. In this study, the effectiveness of come up time on inactivation of heat resistance isoform of polyphenol oxidase (PPO), as a pasteurization index, was investigated during heating of the quince puree in a water bath at 60 to 90 . M5 decision tree, a novel statistical method, was applied to understand the simple relati...

1998
YONG WANG IAN H. WITTEN

Model trees, which are a type of decision tree with linear regression functions at the leaves, form the basis of a recent successful technique for predicting continuous numeric values. They can be applied to classiication problems by employing a standard method of transforming a classiication problem into a problem of function approximation. Surprisingly, using this simple transformation the mo...

Journal: :پژوهش های جغرافیای طبیعی 0
محمدتقی ستاری استادیار گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز علی رضازاده جودی دانشجوی کارشناسی ارشد عمران آب، دانشگاه آزاد اسلامی، واحد مراغه فرناز نهرین دانشجوی کارشناسی ارشد سازه‎های آبی، دانشکدۀ کشاورزی، دانشگاه تبریز

introduction rainfall is considered as one of the most important factures in water cycle. prediction of monthly rainfall is important for many purposes such as estimating torrent, drought, run-off, sediment, irrigation programming and also management of drainage basins. rainfall prediction in each area is mediated by punctual data measured as humidity, temperature, wind speed and etc. as iran i...

2004
Dimitri P. Solomatine Yunpeng Xue

The applicability and performance of the so-called M5 model tree machine learning technique is investigated in a flood forecasting problem for the upper reach of the Huai River in China. In one of configurations this technique is compared to multilayer perceptron artificial neural network (ANN). It is shown that model trees, being analogous to piecewise linear functions, have certain advantages...

ژورنال: علوم آب و خاک 2017

In recent years and in many countries, overusing groundwater resources had been higher than their annual feeding amount. This issue caused drop in the groundwater levels, followed by drying wells, qanats and springs. In this study, given the importance of Neyshabur plain in supplying agricultural, industrial and drinkable water of the area, lazy algorithms of KNN, KSTAR and LWL and M5 tree mode...

2004
DIMITRI P. SOLOMATINE

M5 is a method developed by Quinlan [10] for inducing trees of linear regression models (model trees). The paper addresses the flexibility and optimality in M5 model tree by proposing two new algorithms, namely M5flex and M5opt. M5flex algorithm brings in domain knowledge by enabling the user to choose split attributes and split values for important nodes in a model tree so that the resulting m...

This work reports the results of four ensemble approaches with the M5 model tree as the base regression model to anticipate Sodium Adsorption Ratio (SAR). Ensemble methods that combine the output of multiple regression models have been found to be more accurate than any of the individual models making up the ensemble. In this study additive boosting, bagging, rotation forest and random subspace...

Journal: :iranian red crescent medical journal 0
mehdi birjandi department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran seyyed mohammad taghi ayatollahi department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran; department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7132349330, fax: +98-7132349330 saeedeh pourahmad department of biostatistics, school of medicine, shiraz university of medical sciences, shiraz, ir iran ali reza safarpour gastroenterohepatology research center, shiraz university of medical sciences, shiraz, ir iran

background non-alcoholic fatty liver disease (nafld) is the most common form of liver disease in many parts of the world. objectives the aim of the present study was to identify the most important factors influencing nafld using a classification tree (ct) to predict the probability of nafld. patients and methods this cross-sectional study was conducted in kavar, a town in the south of fars prov...

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