نتایج جستجو برای: ensemble strategy

تعداد نتایج: 383926  

2016
Jianrong Yao Cheng Lian

With the rapid growth of internet finance, the credit assessing is becoming more and more important. An effective classification model will help financial institutions gain more profits and reduce the loss of bad debts. In this paper, we propose a new Support Vector Machine (SVM) based ensemble model (SVM-BRS) to address the issue of credit analysis. The model combines random subspace strategy ...

2017
Mao-Lin Shen Noel Keenlyside Frank Selten Wim Wiegerinck Gregory S. Duane

We construct an interactive ensemble of two different climate models to improve simulation of key aspects of tropical Pacific climate. Our so-called supermodel is based on two atmospheric general circulation models (AGCMs) coupled to a single ocean GCM, which is driven by a weighted average of the air-sea fluxes. Optimal weights are determined using a machine learning algorithm to minimize sea ...

2013
Mohammad Ali Bagheri Qigang Gao Sergio Escalera

The performance of different feature extraction and shape description methods in trademark image recognition systems have been studied by several researchers. However, the potential improvement in classification through feature fusion by ensemble-based methods has remained unattended. In this work, we evaluate the performance of an ensemble of three classifiers, each trained on different featur...

2015
Xutao Deng Samia N. Naccache Terry Ng Scot Federman Linlin Li Charles Y. Chiu Eric L. Delwart

Next-generation sequencing (NGS) approaches rapidly produce millions to billions of short reads, which allow pathogen detection and discovery in human clinical, animal and environmental samples. A major limitation of sequence homology-based identification for highly divergent microorganisms is the short length of reads generated by most highly parallel sequencing technologies. Short reads requi...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
F Marty Ytreberg Daniel M Zuckerman

There is a great need for improved statistical sampling in a range of physical, chemical, and biological systems. Even simulations based on correct algorithms suffer from statistical error, which can be substantial or even dominant when slow processes are involved. Further, in key biomolecular applications, such as the determination of protein structures from NMR data, non-Boltzmann-distributed...

2007
F. Marty Ytreberg Daniel M. Zuckerman

There is a great need for improved statistical sampling in a range of physical, chemical and biological systems. Even simulations based on correct algorithms suffer from statistical error, which can be substantial or even dominant when slow processes are involved. Further, in key biomolecular applications, such as the determination of protein structures from NMR data, non-Boltzmann-distributed ...

2016
Rory M. Donovan José Juan Tapia Devin P. Sullivan James R. Faeder Robert F. Murphy Markus Dittrich Daniel M. Zuckerman

The long-term goal of connecting scales in biological simulation can be facilitated by scale-agnostic methods. We demonstrate that the weighted ensemble (WE) strategy, initially developed for molecular simulations, applies effectively to spatially resolved cell-scale simulations. The WE approach runs an ensemble of parallel trajectories with assigned weights and uses a statistical resampling st...

Journal: :journal of advances in computer research 0
mohsen tavana department of computer engineering, mamasani branch, islamic azad university, mamasani, iran mohammad mohammadi department of computer engineering, mamasani branch, islamic azad university, mamasani, iran hamid parvin department of computer engineering, mamasani branch, islamic azad university, mamasani, iran young researchers and elite club, mamasani branch, islamic azad university, mamasani, iran

exploiting multimodal information like acceleration and heart rate is a promising method to achieve human action recognition. a semi-supervised action recognition approach aucc (action understanding with combinational classifier) using the diversity of base classifiers to create a high-quality ensemble for multimodal human action recognition is proposed in this paper. furthermore, both labeled ...

Journal: :Computer methods and programs in biomedicine 2017
Roberta B. Oliveira Aledir Silveira Pereira João Manuel R. S. Tavares

BACKGROUND AND OBJECTIVES The number of deaths worldwide due to melanoma has risen in recent times, in part because melanoma is the most aggressive type of skin cancer. Computational systems have been developed to assist dermatologists in early diagnosis of skin cancer, or even to monitor skin lesions. However, there still remains a challenge to improve classifiers for the diagnosis of such ski...

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