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결과 내 검색 동의어 포함
결과 내 검색 동의어 포함

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초록보기

Nowadays, online or mobile social network services (SNS) are very popular and widely spread in our society and daily lives to instantly share, disseminate, and search information. In particular, SNS such as YouTube, Flickr, Facebook, and Amazon allow users to upload billions of images or videos and also provide a number of multimedia information to users. Information retrieval in multimedia-rich SNS is very useful but challenging task. Content-based media retrieval (CBMR) is the process of obtaining the relevant image or video objects for a given query from a collection of information sources. However, CBMR suffers from the dimensionality curse due to inherent high dimensionality features of media data. This paper investigates the effectiveness of the kernel trick in CBMR, specifically, the kernel principal component analysis (KPCA) for dimensionality reduction. KPCA is a nonlinear extension of linear principal component analysis (LPCA) to discovering nonlinear embeddings using the kernel trick. The fundamental idea of KPCA is mapping the input data into a highdimensional feature space through a nonlinear kernel function and then computing the principal components on that mapped space. This paper investigates the potential of KPCA in CBMR for feature extraction or dimensionality reduction. Using the Gaussian kernel in our experiments, we compute the principal components of an image dataset in the transformed space and then we use them as new feature dimensions for the image dataset. Moreover, KPCA can be applied to other many domains including CBMR, where LPCA has been used to extract features and where the nonlinear extension would be effective. Our results from extensive experiments demonstrate that the potential of KPCA is very encouraging compared with LPCA in CBMR.

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Range segmentation of dynamic offloading (RSDO) algorithm by correlation for edge computing Jieun Kang, Svetlana Kim, Jae-Ho Kim, Nak-Myoung Sung, Yong-Ik Yoon p. 905-917

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Joint detection method for non-orthogonal multiple access system based on linear precoding and serial interference cancellation Jianpo Li, Qiwei Wang p. 933-946

Research on water edge extraction in islands from GF-2 remote sensing image based on GA method Yan Bian, Yusheng Gong, Guopeng Ma, Ting Duan p. 947-959

(The) needs analysis of software safety education program for common competency area Ji-Woon Kang, Sung-Ryong Do p. 960-971

SAT-analyser traceability management tool support for DevOps Iresha Rubasinghe, Dulani Meedeniya, Indika Perera p. 972-988

Implementation of search engine to minimize traffic using blockchain-based web usage history management system Sunghyun Yu, Cheolmin Yeom, Yoojae Won p. 989-1003

(A) noisy infrared and visible light image fusion algorithm Yu Shen, Keyun Xiang, Xiaopeng Chen, Cheng Liu p. 1004-1019

(The) kernel trick for content-based media retrieval in online social networks Guang-Ho Cha p. 1020-1033

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권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
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