scholarly journals Deep Features for Training Support Vector Machines

2021 ◽  
Vol 7 (9) ◽  
pp. 177
Author(s):  
Loris Nanni ◽  
Stefano Ghidoni ◽  
Sheryl Brahnam
Keyword(s):  
Computer Vision ◽  
Support Vector Machines ◽  
Vision System ◽  
Image Data ◽  
Support Vector ◽  
Data Sets ◽  
Data Set ◽  
Training Support ◽  
Reduction Techniques ◽  
Vector Machines

Features play a crucial role in computer vision. Initially designed to detect salient elements by means of handcrafted algorithms, features now are often learned using different layers in convolutional neural networks (CNNs). This paper develops a generic computer vision system based on features extracted from trained CNNs. Multiple learned features are combined into a single structure to work on different image classification tasks. The proposed system was derived by testing several approaches for extracting features from the inner layers of CNNs and using them as inputs to support vector machines that are then combined by sum rule. Several dimensionality reduction techniques were tested for reducing the high dimensionality of the inner layers so that they can work with SVMs. The empirically derived generic vision system based on applying a discrete cosine transform (DCT) separately to each channel is shown to significantly boost the performance of standard CNNs across a large and diverse collection of image data sets. In addition, an ensemble of different topologies taking the same DCT approach and combined with global mean thresholding pooling obtained state-of-the-art results on a benchmark image virus data set.

Text and metadata extraction from scanned Arabic documents using support vector machines

2020 ◽  
pp. 016555152096125
Author(s):  
Wenda Qin ◽  
Randa Elanwar ◽  
Margrit Betke
Keyword(s):  
Support Vector Machines ◽  
State Of The Art ◽  
Support Vector ◽  
Data Sets ◽  
Layout Analysis ◽  
Data Set ◽  
Metadata Extraction ◽  
Vector Machines ◽  
Text Information ◽  
Multiple Support Vector Machines

Text information in scanned documents becomes accessible only when extracted and interpreted by a text recognizer. For a recognizer to work successfully, it must have detailed location information about the regions of the document images that it is asked to analyse. It will need focus on page regions with text skipping non-text regions that include illustrations or photographs. However, text recognizers do not work as logical analyzers. Logical layout analysis automatically determines the function of a document text region, that is, it labels each region as a title, paragraph, or caption, and so on, and thus is an essential part of a document understanding system. In the past, rule-based algorithms have been used to conduct logical layout analysis, using limited size data sets. We here instead focus on supervised learning methods for logical layout analysis. We describe LABA, a system based on multiple support vector machines to perform logical Layout Analysis of scanned Books pages in Arabic. The system detects the function of a text region based on the analysis of various images features and a voting mechanism. For a baseline comparison, we implemented an older but state-of-the-art neural network method. We evaluated LABA using a data set of scanned pages from illustrated Arabic books and obtained high recall and precision values. We also found that the F-measure of LABA is higher for five of the tested six classes compared to the state-of-the-art method.

scholarly journals Generalized Support Vector Machines (GSVMs) model for real-world time series forecasting

2021 ◽  
Author(s):  
Mehrnaz Ahmadi ◽  
Mehdi Khashei
Keyword(s):  
Support Vector Machine ◽  
Support Vector Machines ◽  
Real World ◽  
Support Vector ◽  
Data Sets ◽  
Fuzzy Support Vector Machine ◽  
Data Set ◽  
Proposed Model ◽  
Vector Machines ◽  
Forecasting Performance

Abstract Support vector machines (SVMs) are one of the most popular and widely-used approaches in modeling. Various kinds of SVM models have been developed in the literature of prediction and classification in order to cover different purposes. Fuzzy and crisp support vector machines are a well-known branch of modeling approaches that frequently applied for certain and uncertain modeling, respectively. However, each of these models can only be efficiently used in its specified domain and cannot yield appropriate and accurate results if the opposite situations have occurred. While the real-world systems and data sets often contain both certain and uncertain patterns that are complicatedly mixed together and need to be simultaneously modeled. In this paper, a generalized support vector machine (GSVM) is proposed that can simultaneously benefit the unique advantages of certain and uncertain versions of the traditional support vector machines in their own specialized categories. In the proposed model, the underlying data set is first categorized into two classes of certain and uncertain patterns. Then, certain patterns are modeled by a support vector machine, and uncertain patterns are modeled by a fuzzy support vector machine. After that, the function of the relationship, as well as the relative importance of each component, are estimated by another support vector machine, and subsequently, the final forecasts of the proposed model are calculated. Empirical results of wind speed forecasting indicate that the proposed method not only can achieve more accurate results than support vector machines (SVMs) and fuzzy support vector machines (FSVMs) but also can yield better forecasting performance than traditional fuzzy and nonfuzzy single models and traditional preprocessing-based hybrid models of SVMs.

A compact neural network for training support vector machines

2012 ◽  
Vol 86 ◽  
pp. 193-198 ◽  
Author(s):  
Yun Yang ◽  
Qiaochu He ◽  
Xiaolin Hu
Keyword(s):  
Neural Network ◽  
Support Vector Machines ◽  
Support Vector ◽  
Training Support ◽  
Vector Machines

Genetic algorithm based on support vector machines for computer vision syndrome classification in health personnel

2018 ◽  
Vol 32 (5) ◽  
pp. 1239-1248 ◽  
Author(s):  
Eva María Artime Ríos ◽  
Ana Suárez Sánchez ◽  
Fernando Sánchez Lasheras ◽  
María del Mar Seguí Crespo
Keyword(s):  
Genetic Algorithm ◽  
Computer Vision ◽  
Support Vector Machines ◽  
Health Personnel ◽  
Support Vector ◽  
Computer Vision Syndrome ◽  
Vector Machines ◽  
Syndrome Classification
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