نتایج جستجو برای: logistic regression lr

تعداد نتایج: 337462  

2011
Mehdi Soufifar Marcel Kockmann Lukás Burget Oldrich Plchot Ondrej Glembek Torbjørn Svendsen

This paper addresses a novel technique for representation and processing of n-gram counts in phonotactic language recognition (LRE): subspace multinomial modelling represents the vectors of n-gram counts by low dimensional vectors of coordinates in total variability subspace, called iVector. Two techniques for iVector scoring are tested: support vector machines (SVM), and logistic regression (L...

Journal: :Pattern Recognition Letters 2006
Dirk Borghys Yann Yvinec Christiaan Perneel Aleksandra Pizurica Wilfried Philips

This paper describes a new method for a feature-based supervised classification of multi-channel SAR data. Classic feature selection and classification methods are inadequate due to the diverse statistical distributions of the input features. A method based on logistic regression (LR) and multinomial logistic regression (MNLR) for separating different classes is therefore proposed. Both methods...

2016
Futao Guo Lianjun Zhang Sen Jin Mulualem Tigabu Zhangwen Su Wenhui Wang

Frequent and intense anthropogenic fires present meaningful challenges to forest management in the boreal forest of China. Understanding the underlying drivers of human-caused fire occurrence is crucial for making effective and scientifically-based forest fire management plans. In this study, we applied logistic regression (LR) and Random Forests (RF) to identify important biophysical and anthr...

2016
Jamie A. Dean Kee H. Wong Hiram Gay Liam C. Welsh Ann-Britt Jones Ulrike Schick Jung Hun Oh Aditya Apte Kate L. Newbold Shreerang A. Bhide Kevin J. Harrington Joseph O. Deasy Christopher M. Nutting Sarah L. Gulliford

PURPOSE Current normal tissue complication probability modeling using logistic regression suffers from bias and high uncertainty in the presence of highly correlated radiation therapy (RT) dose data. This hinders robust estimates of dose-response associations and, hence, optimal normal tissue-sparing strategies from being elucidated. Using functional data analysis (FDA) to reduce the dimensiona...

2011
ZAFAR MAHMOOD NADIM AKHTAR

The study is designed to identify the basic causes of unemployment among the educated segments in Peshawar Division of Pakistan. A sample having 442 individuals belongs to Peshawar Division and having least first degree (graduation degree) or capable of any professional/technical job whether they are employed or unemployed. This paper is an attempt to determine important factors effecting unemp...

Journal: :Entropy 2017
Verónica Barroso-García Gonzalo C. Gutiérrez-Tobal Leila Kheirandish-Gozal Daniel Álvarez Fernando Vaquerizo-Villar Andrea Crespo Félix del Campo David Gozal Roberto Hornero

The aim of this paper is to evaluate the evolution of irregularity and variability of airflow (AF) signals as sleep apnoea-hypopnoea syndrome (SAHS) severity increases in children. We analyzed 501 AF recordings from children 6.2 ± 3.4 years old. The respiratory rate variability (RRV) signal, which is obtained from AF, was also estimated. The proposed methodology consisted of three phases: (i) e...

2014
Taner Tunç

Logistic regression LR is a conventional statistical technique used for data classification problem. Logistic regression is a model-based method, and it uses nonlinear model structure. Another technique used for classification is feedforward artificial neural networks. Feedforward artificial neural network is a data-based method which can model nonlinear models through its activation function. ...

Journal: :Chemical research in toxicology 2007
Yi Li Yufeng J Tseng Dahua Pan Jianzhong Liu Petra S Kern G Frank Gerberick Anton J Hopfinger

Currently, the only validated methods to identify skin sensitization effects are in vivo models, such as the local lymph node assay (LLNA) and guinea pig studies. There is a tremendous need, in particular due to novel legislation, to develop animal alternatives, for eaxample, quantitative structure-activity relationship (QSAR) models. Here, QSAR models for skin sensitization using LLNA data hav...

2010
Alexander Stojadinovic John Eberhardt Trevor S Brown Jason S Hawksworth Frederick Gage Douglas K Tadaki Jonathan A Forsberg Thomas A Davis Benjamin K Potter James R Dunne E A Elster

BACKGROUND Graphical probabilistic models have the ability to provide insights as to how clinical factors are conditionally related. These models can be used to help us understand factors influencing health care outcomes and resource utilization, and to estimate morbidity and clinical outcomes in trauma patient populations. STUDY DESIGN Thirty-two combat casualties with severe extremity injur...

2006
Dirk Borghys Michal Shimoni Christiaan Perneel

Urban areas are among the most dynamic regions on earth, continuously and rapidly changing. For monitoring these changes, remote sensing has proven over the years to be a reliable source. Current airborne hyperspectral systems with spatial resolution of a few meters, combined with very high spectral resolution, facilitate the urban scene analysis by allowing to distinguish small details in the ...

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