• 제목/요약/키워드: IT통계정보시스템

검색결과 555건 처리시간 0.031초

Design of On-line Insurance Sales Support Systems Using Case-Based Reasoning (사례기반추론을 이용한 온라인보험 판매지원시스템의 설계)

  • Kim, Jin-Wan;Ok, Seok-Jae
    • The Journal of the Korea Contents Association
    • /
    • 제10권8호
    • /
    • pp.349-359
    • /
    • 2010
  • The purpose of this study is to design the On-line Insurance Sales Support System using Case-Based Reasoning(CBR). In on-line insurance subscription process, this system provides the personalized insurance payment cases and insurance statistics for customers to entice an insurance subscription. By measuring, specifically, similarities between the user profile and insurance payment cases, it suggests the best insurance payment case which has the highest similarity and reflects the latest in the insurance payment cases. In addition, it serves the insurance statistical information that matches with the attributes of the finally-selected case. These functions can be useful in on-line insurance sales.

Improvement on Similarity Calculation in Collaborative Filtering Recommendation using Demographic Information (인구 통계 정보를 이용한 협업 여과 추천의 유사도 개선 기법)

  • 이용준;이세훈;왕창종
    • Journal of KIISE:Computing Practices and Letters
    • /
    • 제9권5호
    • /
    • pp.521-529
    • /
    • 2003
  • In this paper we present an improved method by using demographic information for overcoming the similarity miss-calculation from the sparsity problem in collaborative filtering recommendation systems. The similarity between a pair of users is only determined by the ratings given to co-rated items, so items that have not been rated by both users are ignored. To solve this problem, we add virtual neighbor's rating using demographic information of neighbors for improving prediction accuracy. It is one kind of extentions of traditional collaborative filtering methods using the peason correlation coefficient. We used the Grouplens movie rating data in experiment and we have compared the proposed method with the collaborative filtering methods by the mean absolute error and receive operating characteristic values. The results show that the proposed method is more efficient than the collaborative filtering methods using the pearson correlation coefficient about 9% in MAE and 13% in sensitivity of ROC.

A Study on Railload System applied on Internet Environment (인터넷 상에서 활용되는 철송 시스템에 관한 연구)

  • Kang, E.S.;Cho, G.S.;Lee, K.S.;Ahn, K.R.;Chung, J.W.
    • 한국IT서비스학회:학술대회논문집
    • /
    • 한국IT서비스학회 2003년도 춘계학술대회
    • /
    • pp.395-398
    • /
    • 2003
  • 인터넷이 활성화 됨에 따라 공간이나 시간적 제약이 감소하였다. 인식 부족과 사용자 환경에 의해 미진하였던 철도 물류 정보 시스템도 웹을 기반으로 서비스 체제를 변경함으로 인해 효율적이고 편리한 서비스를 제공할 수 있었다. 제안한 시스템은 기존 XML로 처리되는 데이터 뿐만 아니라 철도를 통해 운송되는 화물(컨테이너 등)에 대한 추적 정보를 제공하거나 화물 운송에 대한 실적 및 정산 정보를 알 수 있다. 또한 철도를 통해 운송된 화물에 대한 통계 자료나 화차에 대한 운송 현황 자료 등을 추출하여 물동량 파악이나 철송 업무에 활용할 수 있다.

  • PDF

The Effects of Fitness Between Centralization of IT Activities and Organizational Strategy on Information System Performance. (정보기술 활동의 집중화와 조직 전략간의 적합도가 정보시스템 성과에 미치는 영향에 관한 연구)

  • 한경일
    • The Journal of Information Technology
    • /
    • 제2권1호
    • /
    • pp.131-147
    • /
    • 1999
  • According to literature review, fitness between IT activities and organizational strategy enhances performance. Theoretical research says that centralized company in IT activities is appropriate to cost-leadership strategy and decentralized company in IT activities is appropriate to differentiation strategy. But there are very few empirical research. The purpose of this study is to attest whether fitness between IT activities and organizational strategy enhances the information system performance. But the results of this field study were not consistent with literature that fitness of two independent variables enhance performance. So we should take other contingency variables such as organizational structure, culture etc. into consideration to investigate relationship between IT activities and strategy.

  • PDF

Korean Part-of-Speech Tagging System Using Resolution Rules for Individual Ambiguous Word (어절별 중의성 해소 규칙을 이용한 혼합형 한국어 품사 태깅 시스템)

  • Park, Hee-Geun;Ahn, Young-Min;Seo, Young-Hoon
    • Journal of KIISE:Computing Practices and Letters
    • /
    • 제13권6호
    • /
    • pp.427-431
    • /
    • 2007
  • In this paper we describe a Korean part-of-speech tagging approach using resolution rules for individual ambiguous word and statistical information. Our tagging approach resolves lexical ambiguities by common rules, rules for individual ambiguous word, and statistical approach. Common rules are ones for idioms and phrases of common use including phrases composed of main and auxiliary verbs. We built resolution rules for each word which has several distinct morphological analysis results to enhance tagging accuracy. Each rule may have morphemes, morphological tags, and/or word senses of not only an ambiguous word itself but also words around it. Statistical approach based on HMM is then applied for ambiguous words which are not resolved by rules. Experiment shows that the part-of-speech tagging approach has high accuracy and broad coverage.

Infotainment System for Building a Smart Port (스마트 항만 구축을 위한 인포테인먼트 시스템)

  • Min-Jung Kwak;Ye-Eun Park; In-Kwon Kim
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 한국정보처리학회 2023년도 추계학술발표대회
    • /
    • pp.1090-1091
    • /
    • 2023
  • 최근 자동차와 항공 산업에서는 승객들의 편의에 맞추어 엔터테인먼트 서비스를 선보이고 있다. 선행 연구에 따르면, 이동 시간대 스마트폰으로 프로그램을 이용하는 동기로는 '오락용'(19.8%), '소통용(SNS)'(18.8%), '정보용'(15.0%), '게임용'(6.8%)로 전체의 60.4 %를 차지한다. 이는 콘텐츠와 커뮤니티 이용 및 정보탐색 등으로 이동 중 지루한 시간을 해소한다는 유의미한 통계를 보여준다. 해상 분야에서도 정보와 오락 기능을 결합해 편리한 항해를 지원할 필요가 있다고 사료된다. 본 논문은 인터넷 통신이 어려운 선박에서도 무선 통신망을 이용하여 미디어 콘텐츠 및 커뮤니티 활성화뿐만 아니라 안전사고 발생 시 신속하고 정확한 정보 전달 등을 목표로 삼는 선박 인포테인먼트 시스템을 제안하고자 한다.

On a bivariate step-stress life test (두 개의 부품으로 구성된 시스템의 단계적 충격생명검사에 관한 연구)

  • 이석훈;박래현;박희창
    • The Korean Journal of Applied Statistics
    • /
    • 제5권2호
    • /
    • pp.193-209
    • /
    • 1992
  • We consider a Step Life Testing which is deviced for a two-component serial system with the considerably long life time. In the modelling stage we discuss the bivariate exponential distribution suggested by Block and Basu as the bivariate survival function for the two-component system, and develope the cumulative exposure model introduced by Nelson so that it can be used under the bivariate function. We consider inference on the component life time when the components are at work in the system by combining the information from system life test and that from the component tests carried out separately under the controlled environment. In data analysis, maximum likelihood estimators are discussed with the initial value obtained by an weighted least square method. Finally we discuss the optimal time for changing the stress in the simple step stress life testing.

  • PDF

A Study on the Quality Improvement Plan through Analysis of Information System Audit Examples (정보시스템 감리사례 분석을 통한 품질 향상 방안에 관한 연구)

  • Lee, Don-Hee;Jung, Hong-Sup;Lee, Ki-Young;Han, Ki-Joon
    • Journal of the Korea Society of Computer and Information
    • /
    • 제17권10호
    • /
    • pp.203-216
    • /
    • 2012
  • For the successful operation of the current organization, the importance of the information system is further increasing, and audit for the information system construction is also spreading according to the mandatory of information system audit. However our country's information system audit still does not deal with various risks and the improvement plan of it is desperately needed since bad practices are often happened while performing audit for the various information system projects. Therefore, this paper proposed improved review items for the quality improvement of information system construction by analysing data of information system audit projects and risk occurrence projects that are performed by the domestic large SI company during four years. In addition, this paper verified the effectiveness of the improved review items proposed in this paper by applying them to actual information system project examples.

Contingent valuation method implemented by R: Case study - measuring value of information (R을 활용한 조건부 가치 측정법: 정보 가치 측정 사례 연구)

  • Jung, Byung-Joon;Pak, Ro-Jin
    • Journal of the Korean Data and Information Science Society
    • /
    • 제22권6호
    • /
    • pp.1041-1051
    • /
    • 2011
  • The development of information technology provides us with more useful information but it arose to protect such information from inappropriate users. In the course of analyzing and managing the risks associated with information, it should be needed to accurately measure the value of information. We try to consider the contingent valuation method for this purpose. The contingent valuation method which is used to assess the value of public goods or nonmarket goods makes an statistical estimation for the willingness-to-pay. We show with an example how we can estimate the value of information by calculating the amount we are willing to pay the value of information that exists on the information system. Calculation is carried out by using R.

Korean Part-of-Speech Tagging using Disambiguation Rules for Ambiguous Word and Statistical Information (어휘별 중의성 제거 규칙과 통계 정보를 이용한 한국어 품사 태깅)

  • Ahn, Kwang-Mo;Han, Kyou-Youl;Seo, Young-Hoon
    • The Journal of the Korea Contents Association
    • /
    • 제9권2호
    • /
    • pp.18-26
    • /
    • 2009
  • A hybrid part-of-speech tagging approaches may be robust, easily extendable, and accurate because they can have the advantages of both statistical approach and rule-based approach. But conventional hybrid part-of-speech tagging systems hardly resolve some morphological ambiguities which can't be resolved by statistical information. It is because the coverage of rules is narrow. So, we define disambiguation rules for individual ambiguous word based on syntax and semantics of surround words. We select words from which the top 50% of ambiguities are occurred in Sejong corpus and build 1,814 rules for them. The accuracy of our hybrid part-of-speech tagging system using those rules is 98.28%.