• Journal of Korea Multimedia Society
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• v.11 no.11
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• pp.1601-1614
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• 2008

The number of web service users has been increased rapidly as existing services are changed into the web-based internet applications. Therefore, it is necessary for us to use web log pre-processing technique to detect attacks on diverse web service transactions and it is also possible to extract web mining information. However, existing mechanisms did not provide efficient pre-processing procedures for a huge volume of web log data. In this paper, we proposed both a field based parsing and a high-speed log indexing mechanism based on the suggested B-tree Index Vector structure for performance enhancement. In experiments, the proposed mechanism provides an efficient web log pre-processing and search functions with a session classification. Therefore it is useful to enhance web attack detection function.

• Journal of Korea Society of Industrial Information Systems
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• v.10 no.3
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• pp.15-20
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• 2005

Since the invention of Web, it became part of our daily life replacing the routine information search and effecting many activities which otherwise could have been done off-line without it. It was a natural evolution of the web technology, which had started out as a simple test based pattern matching, to be based on the optimized match process for its multi-media Web environment, like still images, music and movies that we are to face today. In this paper, we proposed and implemented the model which the multimedia resources can be efficiently shared in semantic web. After converting multimedia resource information(metadata) into RDF, for efficient management, the model separate and allotment actual multimedia resource and corresponding metadata changed to RDF to each server. The proposed model could be applied in all multimedia resources. For easy explanation and implementation, however, we applied it to the digital photograph in example.

• Journal of Korea Society of Digital Industry and Information Management
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• v.4 no.1
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• pp.65-68
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• 2008

In this paper, a web-based 3D virtual reality (VR) pavillion of Korean Traditional Music was implemented. The VR pavillion is used for the virtual demonstration and experience of Korean Traditional Music, which provides the information as well as multimedia experience on eight instruments to users through internet. It provides eight web-pages and one an audio-visual classroom on the instruments.

• Journal of Korea Multimedia Society
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• v.15 no.9
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• pp.1165-1173
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• 2012

One of the most popular technologies in Web2.0 is tagging, and it widely applies to Web content as well as multimedia data such as image and video. Web users have expected that tags by themselves would be reused in information search and maximize the search efficiency, but wrong tag by irresponsible Web users really has brought forth a incorrect search results. In past papers, we have gathered various information resources and tags scattered in Web, mapped one tag onto other tags, and clustered these tags according to the corelation between them. A 3-tag based search algorithm which use the clustered tags of past papers, is proposed in this paper. For performance evaluation of the proposed algorithm, our algorithm is compared with image search result of Flickr, typical tag based site, and is evaluated in accuracy and recall factor.

• Journal of Korea Multimedia Society
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• v.3 no.6
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• pp.661-673
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• 2000

In this paper, we propose a Web-based HW/SW Codesign Environment with Distributed Architecture (WebCEDA), then design and implement SpecCharts Specification Environment(ScSE) for specifying systems in WebCEDA. WebCEDA has 3-tier client/server architecture than can remedy disadvantages of existing codesign tools, such as platform dependency, difficulty of extension, absence of collaboraton environment. ScSE includes web interface, SpecCharts editor, HW/SW codesin application sever and SpecCharts translator. To verify the operation of ScSE, we specify several example system using SpecCharts editor, then translate it to VHDL using SpecCharts translator and simulate the translated VHDL codes on synopsys. As the results, we know that ScSE has correct operations, also obtain the following advantages, the reduction in system complexity and the natural abstract design.

• Journal of Multimedia Information System
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• v.4 no.4
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• pp.171-178
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• 2017

Data mashup is a web technology that combines information from multiple sources into a single web application. Mashup applications create a new horizon for new services, like environmental monitoring. Environmental monitoring is a serious tool for the state and private organizations, which are located in regions with environmental hazards and seek to gain insights to detect hazards and locate them clearly. These organizations utilize a data mashup to merge datasets from different Internet of multimedia things (IoMT) context-based services in order to leverage its data analytics performance and the accuracy of the predictions. However, mashup different datasets from multiple sources is a privacy hazard as it might reveal citizens specific behaviors in different regions. The ability to preserve privacy in mashuped datasets and at the same time provide accurate insights becomes a key success for the spread of mashup services. In this paper, we present our efforts to build a fog-based middleware for private data mashup (FMPM) to serve a centralized environmental monitoring service. The proposed middleware is equipped with concealment mechanisms to preserve the privacy of the merged datasets from multiple IoMT networks involved in the mashup application. Also, these mechanisms preserve the aggregates in the dataset to maximize the usability of information to attain accurate analytical results. We also provide a scenario for IoMT-enabled data mashup service and experimentation results.

• The Journal of Society for e-Business Studies
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• v.20 no.3
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• pp.79-87
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• 2015

With recent emergence of Web 2.0 technology, many services are encouraging the user participation. Then, many approaches dealing with multimedia contents focused on the personalized information provisioning. The proposed approach analyzes the user requirements and previous methodology for personalized information provisioning. Furthermore, we propose the user participation based multimedia services with collaborative tagging.

• Annual Conference of KIPS
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• 2001.04a
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• pp.119-122
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• 2001

본 논문에서 제안한 MPEG-4 기반 대화형 MOD 서버 시스템은 데이터 공유 네트워크(DSN)를 이용한 클러스터링 서버 구조를 채택하여 클러스터링과 가상서버시스템, 데이터 공유 네트워크 기법을 적용한 복합적 구조를 가진 서버시스템을 설계 구현하였다. 본 논문이 제안한 서버 시스템은 확장이 용이하고, 각 서버 노드가 이상이 발생할 경우 타 서버에 영향을 주지 않는 독립성이 확보돼 안정성이 향상되었다. 그러나 DSN 에서 사용되는 NFS나 Samba 등은 보안에 취약하며, 네트워크 전송에 따른 오버헤드의 보완이 필요하다.

• Journal of Korea Multimedia Society
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• v.17 no.3
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• pp.353-363
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• 2014

Cloud computing is an internet-based technology, providing services to the virtualized IT environment, and allowing users to add or remove resources of hardware or software at their discretion. Since Cloud computing can construct virtually integrated environments out of multiple local computing environments, various information services can be provided by it. In addition, state organizations also strive to build the cloud computing environments due to the benefits of reduced costs to introduce the system and of reduced time to build and provide the IT services. This study suggests a web-based cloud computing system for the computing environments, to be applied for the Korean National Health and Nutrition Examination Survey (KNHANES) by the Ministry of Health and Welfare, Republic of Korea.

• Journal of Korea Multimedia Society
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• v.11 no.2
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• pp.129-142
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• 2008

With the rapid increase of Web Service sites, one emerging problem is how to find the most appropriate Services from the massive number of similar Web Services. A matchmaker is an agent system, which find the best Service providers for the given queries. In this paper, we propose a matchmaker for the distributed visual media retrieval framework, called HERMES, and describe how to rank the resulting Services based on the QoS elements related with visual media Services. To show the usefulness and correctness of the proposed schemes, some experimental results are also shown.