• The KIPS Transactions:PartA
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• v.10A no.2
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• pp.93-100
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• 2003

With the advent of distributed computing and Web service technologies, lots of users have been requiring services that can conveniently obtain and/or support well-assembled information based on Web. For this reason, we are to construct Automatic Linking Support Systems for generating Web-based integrated information and supporting retrieval information according to user's various requirements. Our system organization is based on client/server system. A server environment consisted of automatic linking engine that can provide lexical analyzing, query processing and integrated document generating functions, and databases that are made of dictionaries, image and URL contents. Also, client environments consisted of Web editor that can generate integrated documents and Web helper that can retrieve them via automatic linking engine and databases. For client's user-friendly interfaces, web editor and helper programs can directly execute by down leading from a server without setup them before inside clients. For reducing server's overheads, Parts of server's executing modules are distributed to clients on which they can be executing. As an implementation of our system, we use the JDK 1.3, SWING for user interfaces like Web editor and helper, RMI mechanism for interaction between clients and a server, and SQL server 7.0 for database development, respectively. Finally, we showed the access procedures of automatic document linking engine and databases from Web editor or Web helper, and results appearing on their screens.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.4
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• pp.379-387
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• 2018

In order to make the IoT ecosystem more usable and friendly to general users, the interaction between the users and platforms/devices and its UX must be improved. In this study, a web-based rule engine system to help users intuitively interact with the various devices and services in IoE (Internet of Everything) platform is proposed. The proposed system consists of web interfaces and UI components for creating and managing rule-based scenarios using sensors, actuators, and external services in an intuitive way. Also, a rule management module for automatically translating the rules from the web interface into Nools rule engine compatible ones is proposed. Finally, we show the usability and feasibility of the proposed system by demonstration of rule-based use cases of IoT devices and external services.

• Journal of KIISE:Databases
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• v.33 no.7
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• pp.708-714
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• 2006

The World Wide Web has become an entrenched global medium for storing and searching information. Most people begin at a Web search engine to find information, but the user's pertinent search results are often greatly diluted by irrelevant data or sometimes appear on target but still mislead the user in an unwanted direction. One of the intentional, sometimes vicious manipulations of Web databases is Web spamming as Google bombing that is based on the PageRank algorithm, one of the most famous Web structuring techniques. In this paper, we regard the Web as a directed labeled graph that Web pages represent nodes and the corresponding hyperlinks edges. In the present work, we define the label of an edge as having a link context and a similarity measure between link context and the target page. With this similarity, we can modify the transition matrix of the PageRank algorithm. A motivating example is investigated in terms of the Singular Value Decomposition with which our algorithm can outperform to filter the Web spamming pages effectively.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.8
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• pp.1187-1193
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• 2002

There are POP3(Post Office Progocol 3) and IMAP4(Internet Message Access Protocol 4) for E-Mail service of wire Internet For mobile e-mail service that use wireless Internet, must use exclusive use mobile e-mail server in the case of POP3 e-mail or flow e-mail conversion and because e-mail is kept in sever side with remote file server in case of IMAP4 mail that is used by Web-Mail, utilization of mobile e-mail service is difficult by mobile client who there is no IMAP4 rules. This thesis embodying e-mail extraction engine for mobile that do to design markup language converter of XML base, and use Web-Mail of recently been generalizing IMAP4 base in mobile, presented mobile e-mail service method to do so that can use Web-Mail that is based on IMAP4 as well as POP3 mail service in mobile environment.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.260-265
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• 2000

사용자 질의를 통한 검색엔진의 도움 없이 웹 데이터베이스의 개념을 도입하여, 웹을 직접 검색할 수 있는 웹 질의 엔진(Web Query Engine)을 제안한다. 특히 사용자가 자신이 원하는 질의를 할 수 있도록 기존의 질의 언어와 유사한 웹 질의 언어를 설계하고, 설계되어진 질의 언어를 사용하여 인덱스 서버에 정보의 요청 없이 네트워크 구조와 위상 기반의 질의를 할 수 있도록 하는 웹 질의 엔진을 설계 및 구현을 하였다.

• The KIPS Transactions:PartB
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• v.12B no.1 s.97
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• pp.91-100
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• 2005

It has been proposed diverse methods to use web information efficiently as the size of information is increasing. Most of search systems use a keyword-based method that mostly relies on syntactic information. They cannot utilize semantic information of documents and thus they could generate to users. To solve shortcoming in searching documents, a technique using the Semantic Web is suggested. A semantic web can find relevant information to users by employing metadata which are represented using standard ontologies. Each document is annotated with a metadata which can be reasoned by agents. In this paper, we propose a search system using semantic web technologies. Our semantic search system analyzes semantically questions that user input, and get resolution information that user want. To improve efficiency and accuracy of semantic search systems, this paper proposes DQL(DAML Query Language) engine that employs inference engine to execute reasoning and DQL converter that changes keyword form question of the user to DQL.

• Journal of Korea Multimedia Society
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• v.4 no.5
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• pp.377-389
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• 2001

It has a tendency to build Workflow Systems based on the web with the spread of web environment. The important function in Workflow Systems are to automatize job flow according to the predefined regulations, procedures or conditions. Hence, there needs to consider excluding passive jobs, supporting GUI and a migratory information processing for information flow. Distributed Workflow System for workflow of a distributed service system should perform transfer control and Fault-Tolerance between tasks based on process logic, and real time processing. However, the existing mail systems being used are just for transmission and it doesn't fit to automatize job flow. To solve the matter, there needs a Distributed Workflow Engine to design workflow and automatize its control. In this paper, we design a web browser with graphic interface using web mail, a browser creating a script code for a procedural performance. Also, we design a Process-engine has a Preprocessor which tolerates process scheduler for task transaction or server node's faults on distributed environment. The proposed system enhances the reliability and usability of a system reduces the cost rather than a workflow system based on database, for they execute as proxy for a server's fault or suers' absence.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.1
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• pp.100-104
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• 2010

In the past decade, various search engines have been developed to retrieve web pages that web surfers want to find from world wide web. In search engines, one of the most important functions is to evaluate and rank web pages for a given web surfer query. The prior algorithms using hyperlink information like PageRank incur the problem of 'topic drift'. To solve the problem, relevance propagation models have been proposed. However, these models suffer from serious performance degradation, and thus cannot be employed in real search engines. In this paper, we propose a new ranking algorithm that alleviates the topic drift problem and also provides efficient performance. Through a variety of experiments, we verify the superiority of the proposed algorithm over prior ones.

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.4
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• pp.483-488
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• 2015

This paper implements a long-term monitoring system (LMS) for ship's engine performance analysis (SEPA) based on the web, for the purpose of the communication speed and engine maintenance. This system is composed of a simulator, monitoring module with a multi channel A/D converter, monitoring computer, network attached storage (NAS), RS485 serial and wireless internet communication system. The existing products monitor the information transmitted from pressure sensors installed in the upper parts of each of engines in the local or web computer, but have a delay in the communication speed and errors in long-term monitoring due to the large volume of sampling pressure data. To improve these problems, the monitoring computer saves the sampling pressure data received from the pressure sensors in NAS, monitors the long-term sampling data generated by the sectional down sampling method on a local computer, and transmits them to the web for long-term monitoring. Because this method has one tenth of the original sampling data, it will use memory with small capacity, save communication cost, monitor the long-term sampling data for 30 days, and as a result, make a great contribution to engine maintenance.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.06a
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• pp.186-186
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• 2010

최근 들어, 2차원/3차원의 랩 또는 항공/위성 영상의 공간정보를 웹 상에서 서비스 하고 이러한 공간정보에 다양한 정보들을 융 복합하여 사용자들에게 보다 높은 수준의 정보를 제공하기 위한 기술개발에 대한 관심이 급증하고 있다. 예를들어, Microsoft사의 경우는 사용자 참여형(Participatory) 센서 웹 환경을 구축하기 위하여 SenseWeb 관련 기술 개발 및 시범 프로젝트를 수행하고 있는데, SenseWeb 시스템에서는 전 세계에 존재하는 모든 센서들을 연계하여 웹 상에서 사용자들에게 제공할 수 있도록 하는 것을 목표로 하고 있다. 최근에는, 이러한 SenseWeb 시스템을 이용하여 센싱정보와 Bing Map의 공간정보를 융합하여 사용자에게 서비스를 제공할 수 있는 SensorMap 시스템이 개발되었는데, 이러한 SensorWeb/SensorMap 시스템을 기반으로 다양한 시범 프로젝트들이 진행되어 오고 있다. Google사의 경우는 기존에 서비스 되고 Google Eearth/Map을 기반으로 실시간 센싱정보를 연계하여 제공하는 서비스와 다양한 사용자들의 정보들을 테이블 형태로 연계 및 융합하여 제공하기 위한 Google Fusion Tables 서비스를 제공하고 있다. Oracle사의 경우는 센싱정보를 포함하여 실시간으로 끊임없이 변화하는 정보들에 대하여 이벤트 처리, 패턴 분석, 그리고 상황인식 등의 서비스를 제공할 수 있는 CEP(Complex Event Processing) 제품을 선보이고 있다. Nokia사의 경우는 기존의 고정 센서노드들 이외에 모든 모바일 폰을 이동이 가능한 센서노드로 가정하고 이러한 모바일 센서노드들로부터 교통정보를 포함하는 다양한 센싱정보를 수집하고 분석하여 공간정보 기반으로 서비스하기 위한 기술 개발을 꾸준히 추진해 오고 있다. 본 발표에서는 이러한 공간정보와 센싱정보 또는 기타 사용자 정보와의 융 복합서비스를 가능하게 하는 핵심기술들에 대하여 소개하고자 한다. 첫째로 다양한 공간정보와 센싱정보의 융 복합 및 분석 서비스를 제공할 수 있는 u-GIS 융합 엔진에 대하여 설명하고자 한다. u-GIS 융합 엔진에서는 구체적으로 최근 이슈가 되고 있는 다양한 센싱정보의 효율적 수집, 분석, 관리를 위한 GeoSensor 데이터 저장/관리 기술과 센싱정보-공간정보의 실시간 융합 분석 기술에 대해서 소개를 하고자 한다. 둘째로, 이러한 공간정보, 센싱정보 그리고 기타 사용자 정보들을 웹 상에서 효율적으로 매쉬업하여 2차원 및 3차원으로 사용자에게 제공하기 위한 맞춤형 국토정보 제공 기술에 대하여 설명하고자 한다. 여기서는 공간정보 센싱정보 그리고 기타 사용자 정보와의 연계를 위한 매쉬업 엔진 기술 그리고 실시간 3차원 공간정보 제공 기술 등에 대하여 소개를 하고자 한다. 끝으로, 영상 기반의 효율적인 공간정보 구축을 위한 멀티센서 데이터 처리 기술에 대하여 간략히 소개를 하고, 앞에서 설명된 핵심기술들 이외에도 향후 추가로 요구되는 기술개발 내용에 대하여 간략히 설명을 하고자 한다.