A Hierarchical Infinite Generalized Dirichlet Mixture Model with Feature Selection

2014 ◽  
pp. 1-10 ◽  
Author(s):  
Wentao Fan ◽  
Hassen Sallay ◽  
Nizar Bouguila ◽  
Sami Bourouis
Keyword(s):  
Feature Selection ◽  
Mixture Model ◽  
Dirichlet Mixture ◽  
Generalized Dirichlet

scholarly journals Discriminative Learning Approach Based on Flexible Mixture Model for Medical Data Categorization and Recognition

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2450
Author(s):  
Fahd Alharithi ◽  
Ahmed Almulihi ◽  
Sami Bourouis ◽  
Roobaea Alroobaea ◽  
Nizar Bouguila
Keyword(s):  
Mixture Model ◽  
Hybrid Approach ◽  
Medical Data ◽  
Support Vector ◽  
Discriminative Learning ◽  
Learning Approach ◽  
X Rays ◽  
Intrinsic Nature ◽  
Discriminative Models ◽  
Dirichlet Mixture

In this paper, we propose a novel hybrid discriminative learning approach based on shifted-scaled Dirichlet mixture model (SSDMM) and Support Vector Machines (SVMs) to address some challenging problems of medical data categorization and recognition. The main goal is to capture accurately the intrinsic nature of biomedical images by considering the desirable properties of both generative and discriminative models. To achieve this objective, we propose to derive new data-based SVM kernels generated from the developed mixture model SSDMM. The proposed approach includes the following steps: the extraction of robust local descriptors, the learning of the developed mixture model via the expectation–maximization (EM) algorithm, and finally the building of three SVM kernels for data categorization and classification. The potential of the implemented framework is illustrated through two challenging problems that concern the categorization of retinal images into normal or diabetic cases and the recognition of lung diseases in chest X-rays (CXR) images. The obtained results demonstrate the merits of our hybrid approach as compared to other methods.

Finite multi-dimensional generalized Gamma Mixture Model Learning for feature selection

2021 ◽  
pp. 147-173
Author(s):  
Basim Alghabashi ◽  
Mohamed Al Mashrgy ◽  
Muhammad Azam ◽  
Nizar Bouguila
Keyword(s):  
Feature Selection ◽  
Mixture Model ◽  
Model Learning ◽  
Generalized Gamma
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