نتایج جستجو برای: روش svdd

تعداد نتایج: 369703  

Journal: :Journal of neural engineering 2010
Manu Nandan Sachin S Talathi Stephen Myers William L Ditto Pramod P Khargonekar Paul R Carney

We compare the performance of three support vector machine (SVM) types: weighted SVM, one-class SVM and support vector data description (SVDD) for the application of seizure detection in an animal model of chronic epilepsy. Large EEG datasets (273 h and 91 h respectively, with a sampling rate of 1 kHz) from two groups of rats with chronic epilepsy were used in this study. For each of these EEG ...

Journal: :EURASIP J. Adv. Sig. Proc. 2011
Takahiro Ogawa Miki Haseyama

An adaptive single image superresolution (SR) method using a support vector data description (SVDD) is presented. The proposed method represents the prior on high-resolution (HR) images by hyperspheres of the SVDD obtained from training examples and reconstructs HR images from low-resolution (LR) observations based on the following schemes. First, in order to perform accurate reconstruction of ...

Journal: :Mathematics 2022

Deep neural network-based autoencoders can effectively extract high-level abstract features with outstanding generalization performance but suffer from sparsity of extracted features, insufficient robustness, greedy training each layer, and a lack global optimization. In this study, the broad learning system (BLS) is improved to obtain new model for data reconstruction. Support Vector Domain De...

Journal: :Pattern Recognition 2017
Hong-Jie Xing Xizhao Wang

In this paper, a novel selective ensemble strategy for support vector data description (SVDD) using the Renyi entropy based diversity measure is proposed to deal with the problem of one-class classification. In order to obtain compact classification boundary, the radius of ensemble is defined as the inner product of the vector of combination weights and the vector of the radii of SVDDs. To make...

2016
Chunxiang Wang Dongfang Xu Yongqing Wang

Object detecting and tracking is an important technique used in diverse applications of machine vision, and has made great progress with the prevalence of artificial intelligence technology, among which the detecting and tracking moving object under dynamic scenes is more challenging for high requirements on real-time performance and reliability. Essentially analyzing, object detecting and trac...

Journal: :DEStech Transactions on Computer Science and Engineering 2019

Journal: :Pattern Recognition 2013
Chang-Dong Wang Jian-Huang Lai

Support Vector Domain Description (SVDD) is an effective method for describing a set of objects. As a basic tool, several application-oriented extensions have been developed, such as support vector clustering (SVC), SVDD-based k-Means (SVDDk-Means) and support vector based algorithm for clustering data streams (SVStream). Despite its significant success, one inherent drawback is that the descri...

Journal: :IEEE Access 2021

Poor model generalization, missing or false alarms, and heavy dependence on expert's experience are some of the major problems which exist in traditional incipient fault detection (IFD) methods. An IFD rolling bearing application method based combination improved ? 1 trend filtering (L1TF) suppo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی برق و کامپیوتر 1391

پروتکل aodv به عنوان یکی از معروفترین پروتکل های مسیریابی شبکه های بی سیم اقتضایی (manet) در مقابل شماری از حمله ها و سوءرفتارها آسیب پذیر می باشد. در این رساله یک سیستم تشخیص حمله با رویکرد تشخیص ناهنجاری (ads) در manet با پروتکل مسیریابی aodv پیشنهاد می شود. در طرح پیشنهادی 1) خصیصه های لازم برای توصیف رفتار پروتکل aodv با رویکردی مبتنی بر رهگیری مرحله به مرحله ی ویژگی ها و رفتار پروتکل تعریف...

Journal: :Computers, materials & continua 2021

These days, imbalanced datasets, denoted throughout the paper by ID, (a dataset that contains some (usually two) classes where one considerably smaller number of samples than other(s)) emerge in many real world problems (like health care systems or disease diagnosis systems, anomaly detection, fraud stream based malware detection and so on) these datasets cause under-training minority class(es)...

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