• 한국멀티미디어학회논문지
• /
• 제7권2호
• /
• pp.145-155
• /
• 2004

인터넷 쇼핑몰을 구성하는 관리자 입장에서는 사용자 중심의 편리한 검색 기능과 시스템 중심의 빠른 검색 기능을 가지는 것이 매우 중요하다. 전자는 사용자의 다양한 요구를 만족시킬 수 있는 최적화된 입력 매개 변수를 찾아내는 것이며, 후자는 속성이 다른 다양한 입력 변수들을 효과적으로 정규화 하여 빠른 검색 해를 찾아내는 것이다. 본 연구에서는 기본적으로 사용자의 다양한 요구를 최대한 반영하기 위해 다중 속성을 가진 검색 기능은 물론 보다 빠른 검색 기능을 가지기 위한 데이터베이스 최적화 구성에 초점을 두고 있다. 이를 위해 인터넷 쇼핑몰의 검색 특성을 반영할 수 있는 연관 규칙의 척도인 지지도와 신뢰도를 고려한 수정된 연관 알고리즘을 제시하며, 빠른 검색 기능을 가지기 위한 모델관리 시스템을 제안한다. 수행된 시뮬레이션 결과에 의하면 고객의 검색 트랜잭션 수가 증가할수록 전체 평균 검색 시간은 상대적으로 줄어든다.

• International Journal of Computer Science & Network Security
• /
• 제22권6호
• /
• pp.212-222
• /
• 2022

There has been a rapid increase in the use of cloud email services. As a result, email encryption has become more commonplace as concerns about cloud privacy and security grow. Nevertheless, this increase in usage is creating the challenge of how to effectively be searching and filtering the encrypted emails. They are popular technologies of solving the issue of the encrypted emails searching through searchable public key encryption. However, the problem of encrypted email filtering remains to be solved. As a new approach to finding and filtering encrypted emails in the cloud, we propose a ciphertext-based encrypted policy attribute-based encryption scheme and keyword search procedure based on hidden policy ciphertext. This feature allows the user of searching using some encrypted emails keywords in the cloud as well as allowing the emails filter-based server toward filter the content of the encrypted emails, similar to the traditional email keyword filtering service. By utilizing composite order bilinear groups, a hidden policy system has been successfully demonstrated to be secure by our dual system encryption process. Proposed system can be used with other scenarios such as searching and filtering files as an applicable method.

• 사물인터넷융복합논문지
• /
• 제1권1호
• /
• pp.11-19
• /
• 2015

The mobile and ubiquitous environment is experiencing a rapid development of information and communications technology as it provides an ever increasing flow of information. Particularly, GIS is now widely applied in daily life due to its high accuracy and functionality. GIS information is utilized through the tiling method, which divides and manages large-scale map information. The tiling method manages map information and additional information to allow overlay, so as to facilitate quick access to tiled data. Unlike past studies, this paper proposes a new architecture and algorithms for tile searching and indexing management to optimize map information and additional information for GIS mobile applications. Since this involves the processing of large-scale information and continuous information changes, information is clustered for rapid processing. In addition, data size is minimized to overcome the constrained performance associated with mobile devices. Our system has been implemented in actual services, leading to a twofold increase in performance in terms of processing speed and mobile bandwidth.

• 한국멀티미디어학회논문지
• /
• 제18권8호
• /
• pp.925-934
• /
• 2015

The frequency of natural disasters because of global warming is gradually increasing, risks of flooding due to typhoon and torrential rain have also increased. Among these causes, the roads are flooded by suddenly torrential rain, and then vehicle and personal injury are happening. In this respect, because of the possibility that immersion of a road may occur in a second, it is necessary to study the rapid data collection and quick response system. Our research proposes a big data analysis system based on the collected information and a variety of system information collection methods for searching flooded road areas by torrential rains. The data related flooded roads are utilized the SNS data, meteorological data and the road link data, etc. And the big data analysis system is implemented the distributed processing system based on the Hadoop platform.

• 한국인터넷방송통신학회논문지
• /
• 제19권6호
• /
• pp.29-33
• /
• 2019

최근 비디오 콘텐츠의 손쉬운 제작 및 통신 기술의 급격한 발전으로 IPTV의 수요가 지속적으로 증가하고 있다. 한편, IPTV 채널의 수가 급격히 증가하면서 사용자의 채널 탐색에 많은 시간이 소요되고 있다. 본 논문은 컴퓨터 시스템의 메모리 관리 기술들을 활용하여 IPTV 채널 탐색 지연을 줄이는 방안을 논의하고 그 효용성을 분석한다. 구체적으로는 메모리 관리 기술로 널리 활용되어 온 메모리 교체 기법과 사전인출 기법, 그리고 캐슁 기법 등을 IPTV 채널 탐색 문제에 매핑하여 메모리 관리 기술이 어떻게 채널 탐색 인터페이스에 활용될 수 있는지를 소개하고 그에 따른 성능 개선 효과에 대해 논의한다.

• 한국의류학회지
• /
• 제31권8호
• /
• pp.1310-1320
• /
• 2007

This study investigated the differences in the importance of store characteristics depending on on-line clothing store type and consumer age. The questionnaires were given to female residents in the ages between 20-39 in Seoul and Kyung-gi province during October 2006. The results were summarized as follows: 1. By analyzing the differences in importances of on-line store characteristics factors it was found that buying process service factor and product searching system factor were important in on-line general merchandise store. and buying process service factor and product factor(all the factors, such as store credit, product, screen-displayed design, searching and approaching system, customer management service) were important in on-line specialty store. 2. By analyzing the differences in importances of on-line store characteristics depending on the store type, buying process system such as refund policy, shipping, high-speed payment and rapid searching, screen-displayed design system, approaching and searching system were more important in on-line general merchandise store when comparing to specialty store. It also showed that the consumer considered the reputation of the store and its image more important in on-line general merchandise store. 3. By analyzing the differences in of on-line clothing store importance depending on age, in the case of on-line general merchandise store, it showed that people in their thirties regarded buying process service factor more important than twenties, and when it came to the product and searching system, it was vice versa. Twenties had a tendency to consider the aspect of product important and, relatively, thirties regarded searching and approaching system factor important. in the case of specialty store. It was found that women in their twenties had a tendency to consider product factor more important.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1996년도 춘계학술대회 논문집
• /
• pp.597-601
• /
• 1996

Nowadays, the STL format, industrial standard data, which approximates three dimensional CAD model to triangular facets, is used for RP(Rapid Prototyping) system. Because most RP machine is accpted to only two dimensional line segments, but some STL translators are sometimes poorly implemented. The error verifying process is as follows. 1) Remove facets with two or more vertices equal to each other. 2) Fix overlapping error such as more than three facets adjacent to an edge. 3) Fill holes in the mesh by using Delaunay triangulation method. 4) Repair wrong direction and value of normal vectors. This paper is concerned with searching the mentioned errors in advance and modifying them.

• 한국지능시스템학회:학술대회논문집
• /
• 한국퍼지및지능시스템학회 2001년도 추계학술대회 학술발표 논문집
• /
• pp.51-55
• /
• 2001

With the rapid growth of the World Wide Web and electronic information services, information is becoming available on-Line at an incredible rate. One result is the oft-decried information overload. No one has time to read everything, yet we often have to make critical decisions based on what we are able to assimilate. The technology of automatic text summarization is becoming indispensable for dealing with this problem. Text summarization is the process of distilling the most important information from a source to produce an abridged version for a particular user or task. Information retrieval(IR) is the task of searching a set of documents for some query-relevant documents. On the other hand, text summarization is considered to be the task of searching a document, a set of sentences, for some topic-relevant sentences. In this paper, we show that document information, that is more reliable and suitable for query, using document length normalization of which is gained through information retrieval . Experimental results of this system in newspaper articles show that document length normalization method superior to other methods use query itself.

• 산업경영시스템학회지
• /
• 제25권1호
• /
• pp.35-41
• /
• 2002

XML(eXtensible Markup Language) based electronic catalog is very useful for searching target information because of its structural and contents based searching support capability. And XML document editing is easier than HTML because of XML document is divided by structure, contents and presentation. This paper is to present a prototype of XML based Electronic Catalog Management System(ECMS) whose system consists of data input, output and manipulation system for inserting, updating, editing and deletion. A proposed system could resolved the problems at virtual intermediary shopping mall invloved in the difficulty of interoperability when customer try to compare similar products at mixed shopping mall and reduced web service costs at independent shopping mall by using XML format. The proposed ECMS offers rapid response capability for product data change of electronic catalog and easy and friendly interoperability among similar products.

• 정보관리연구
• /
• 제27권1호
• /
• pp.1-39
• /
• 1996

본 연구는 EconRef이라는 통합 OPAC의 구현에 관한 것으로서, 이 모델은 참고사서의 효율적인 업무처리를 가능하게 해주고, 이용자에게 조직적이고 신속한 정보서비스를 제공하는 것이다. 통합 OPAC은 REGIS와 The Book House와 같은 실제의 시스템을 기초로 하여 KPWin++를 이용하여 구현하였다. KPWin++는 전문가시스템 쉘로서 하이퍼텍스트와 전문가시스템이 결합되어 있다. 이 통합 OPAC 시스템은 6개의 모듈로 참고봉사 전문가시스템 ; 문헌정보원, 전문가정보원, 통계정보원 ; OPAC ; 외부데이터베이스 ; 이용자안내 등으로 구성되었다. 시스템의 평가는 EconRef 시스템과 초급사서 및 고급사서를 비교하였고, 하이퍼텍스트와 전문가시스템이 결합된 OPAC인 REGIS 시스템과 비교하였다. 비교결과 EconRef 시스템은 고급사서와 유사한 반면 초급사서 보다는 우수한 것으로 나타났다.