نتایج جستجو برای: random forest bagging and machine learning

تعداد نتایج: 17018830  

Journal: :Oral 2022

Treatment duration is one of the most important factors that patients consider when deciding whether to undergo orthodontic treatment or not. This study aimed build and compare machine learning (ML) models for prediction length identify affecting using ML approach. Records 518 who had successfully finished were used in this study. Seventy percent patient data training models, thirty testing the...

Due to the growth of the aging phenomenon, the use of intelligent systems technology to monitor daily activities, which leads to a reduction in the costs for health care of the elderly, has received much attention. Considering that each person's daily activities are related to his/her moods, thus, the relationship can be modeled using intelligent decision-making algorithms such as machine learn...

Journal: :Computers, materials & continua 2022

The paper reports three new ensembles of supervised learning predictors for managing medical insurance costs. open dataset is used data analysis methods development. usage artificial intelligence in the management financial risks will facilitate economic wear time and money protect patients’ health. Machine associated with many expectations, but its quality determined by choosing a good algorit...

ژورنال: علوم آب و خاک 2019

Land use/cover maps are the basic inputs for most of the environmental simulation models; hence, the accuracy of the maps derived from the classification of the satellite images reduces the uncertainty in modeling. The aim of this study was to assess the accuracy of the maps produced by machine learning based on classification methods (Random Forest and Support Vector Machine) and to compare th...

The goal of recommender system is to provide desired items for users. One of the main challenges affecting the performance of recommendation systems is the cold-start problem that is occurred as a result of lack of information about a user/item. In this article, first we will present an approach, uses social streams such as Twitter to create a behavioral profile, then user profiles are clusteri...

Journal: :CoRR 2017
Anthony J. Bagnall Gavin C. Cawley

We demonstrate that, for a range of state-of-the-art machine learning algorithms, the differences in generalisation performance obtained using default parameter settings and using parameters tuned via cross-validation can be similar in magnitude to the differences in performance observed between state-of-the-art and uncompetitive learning systems. This means that fair and rigorous evaluation of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان فارس - دانشکده ادبیات و علوم انسانی 1393

چکیده : هدف پژوهش حاضر، تعیین نقش واسطه‏ای اعتماد سازمانی در رابطه ی بین عدالت سازمانی و یادگیری سازمانی به روش تحلیل مسیر می‏باشد. برای این منظور با استفاده از روش نمونه گیری تصادفی ساده 1?0 نفر از کارکنان اداره ورزش و جوانان استان فارس انتخاب و به پرسشنامه های متشکل از ابعاد یادگیری سازمانی، عدالت سازمانی و اعتماد سازمانی پاسخ دادند. نتایج پژوهش به طور کلی نشان داد که رابطه ی عدالت سازمان...

2004
Marko Robnik-Sikonja

Random forests are one of the most successful ensemble methods which exhibits performance on the level of boosting and support vector machines. The method is fast, robust to noise, does not overfit and offers possibilities for explanation and visualization of its output. We investigate some possibilities to increase strength or decrease correlation of individual trees in the forest. Using sever...

Journal: :Symmetry 2022

As cyber-attacks become remarkably sophisticated, effective Intrusion Detection Systems (IDSs) are needed to monitor computer resources and provide alerts regarding unusual or suspicious behavior. Despite using several machine learning (ML) data mining methods achieve high effectiveness, these systems have not proven ideal. Current intrusion detection algorithms suffer from dimensionality, redu...

Journal: :Strategic planning for energy and the environment 2022

This thesis takes the historical weather time series of Chongqing as experimental samples. Firstly, this uses wavelet transform to organize data, and then divides sample data into training test sets verify accuracy evaluation Naive Bayes Model. Secondly, Model is compared with currently used machine learning models such SVM, XGBoost, bagging, random forest. Finally, results show that has high s...

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