• Title/Summary/Keyword: 선호적 연결 분석

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An Exploratory Study of Filtering Preference on Restaurant Menus using Social Network Analysis (사회연결망 분석을 통한 요식업 메뉴의 상관관계 및 선호도 분석에 관한 연구)

  • Kong, Hyun-Chur;Yu, So-Young
    • Proceedings of the Korean Society for Information Management Conference
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    • 2014.08a
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    • pp.21-24
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    • 2014
  • 정보통신 기술의 발달로 기존의 방식으로는 처리할 수 없는 빅 데이터가 발생한다. 이러한 빅 데이터는 활용가치가 높지만 기존과는 다른 처리방식과 분석방법이 요구된다. 본 연구는 마케팅 분야에서의 빅 데이터 활용에 대해 알아보고자 하였으며 특정 요식업메뉴를 대상으로 빅 데이터를 수집하고 사회연결망 분석을 통하여 빅 데이터의 효율적인 활용과 분석을 시도하였다. 사회연결망 분석에 쓰이는 대표적 지수인 중심성 지수들로서 본 연구에 맞춰 분석하는 과정을 거치고 한걸음 나아가 분석 결과를 활용해 보면서 마케팅 분야에서의 활용가치를 확인해 보았다.

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A Study on Recent Research Trend in Management of Technology Using Keywords Network Analysis (키워드 네트워크 분석을 통해 살펴본 기술경영의 최근 연구동향)

  • Kho, Jaechang;Cho, Kuentae;Cho, Yoonho
    • Journal of Intelligence and Information Systems
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    • v.19 no.2
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    • pp.101-123
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    • 2013
  • Recently due to the advancements of science and information technology, the socio-economic business areas are changing from the industrial economy to a knowledge economy. Furthermore, companies need to do creation of new value through continuous innovation, development of core competencies and technologies, and technological convergence. Therefore, the identification of major trends in technology research and the interdisciplinary knowledge-based prediction of integrated technologies and promising techniques are required for firms to gain and sustain competitive advantage and future growth engines. The aim of this paper is to understand the recent research trend in management of technology (MOT) and to foresee promising technologies with deep knowledge for both technology and business. Furthermore, this study intends to give a clear way to find new technical value for constant innovation and to capture core technology and technology convergence. Bibliometrics is a metrical analysis to understand literature's characteristics. Traditional bibliometrics has its limitation not to understand relationship between trend in technology management and technology itself, since it focuses on quantitative indices such as quotation frequency. To overcome this issue, the network focused bibliometrics has been used instead of traditional one. The network focused bibliometrics mainly uses "Co-citation" and "Co-word" analysis. In this study, a keywords network analysis, one of social network analysis, is performed to analyze recent research trend in MOT. For the analysis, we collected keywords from research papers published in international journals related MOT between 2002 and 2011, constructed a keyword network, and then conducted the keywords network analysis. Over the past 40 years, the studies in social network have attempted to understand the social interactions through the network structure represented by connection patterns. In other words, social network analysis has been used to explain the structures and behaviors of various social formations such as teams, organizations, and industries. In general, the social network analysis uses data as a form of matrix. In our context, the matrix depicts the relations between rows as papers and columns as keywords, where the relations are represented as binary. Even though there are no direct relations between papers who have been published, the relations between papers can be derived artificially as in the paper-keyword matrix, in which each cell has 1 for including or 0 for not including. For example, a keywords network can be configured in a way to connect the papers which have included one or more same keywords. After constructing a keywords network, we analyzed frequency of keywords, structural characteristics of keywords network, preferential attachment and growth of new keywords, component, and centrality. The results of this study are as follows. First, a paper has 4.574 keywords on the average. 90% of keywords were used three or less times for past 10 years and about 75% of keywords appeared only one time. Second, the keyword network in MOT is a small world network and a scale free network in which a small number of keywords have a tendency to become a monopoly. Third, the gap between the rich (with more edges) and the poor (with fewer edges) in the network is getting bigger as time goes on. Fourth, most of newly entering keywords become poor nodes within about 2~3 years. Finally, keywords with high degree centrality, betweenness centrality, and closeness centrality are "Innovation," "R&D," "Patent," "Forecast," "Technology transfer," "Technology," and "SME". The results of analysis will help researchers identify major trends in MOT research and then seek a new research topic. We hope that the result of the analysis will help researchers of MOT identify major trends in technology research, and utilize as useful reference information when they seek consilience with other fields of study and select a new research topic.

Recrystallization Topology : a Scale-free Power-law Network (재결정 위상 : 척도 없는 거듭제곱 법칙 망)

  • Park, Jae-Hyun
    • Journal of KIISE:Information Networking
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    • v.37 no.3
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    • pp.167-174
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    • 2010
  • Recently the distributed topology control algorithm for constructing the Recrystallization Topology in the unstructured peer-to-peer network was proposed. In this paper, we prove that such a hierarchical topology is a scale-free power-law network. We present a model of a construction process of the distributed protocol, and analyze it based on a mean-field approximation and the continuum theory, so that we show that the constructed Recrystallization Topology is a scale-free network. In the proposed model, all nodes are born with some initial attractiveness and the system incorporates the rewiring of some links at every time step. Some old links are removed with the anti-preferential probability, and some new links are added with preferential probability. In other words, according to the distributed algorithm, each node makes connections to the more-preferential nodes having higher hit-ratio than other nodes, while it disconnects the anti-preferential nodes having lesser hit-ratio. This gives a realistic description of the local processes forming the recrystallization topology in unstructured peer-to-peer network. We calculate analytically the degree distribution. The analytic result indicates that the constructed network is a scale-free network, of which the scaling exponent is 3.

A Study on the Satisfactions of Tourism Information DB Services in HiTEL (HiTEL의 관광정보 DB서비스 정보만족도에 관한 연구)

  • 박희석
    • The Journal of Information Technology and Database
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    • v.1 no.2
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    • pp.71-102
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    • 1994
  • 현대는 고도 정보화사회(information society)로서 DB의 가치는 점점 증가하고 전반적인 DB 서비스는 일반적으로 많이 발전하여 우수한 정보 서비스가 제공되고 있다. 그러나 관광정보 DB서비스의 가치는 아직까지 거의 인식되지 않고 있는 실정이다. 따라서 본 연구에서는 초보단계에 있는 관광정보 DB서비스의 만족도를 측정함으로써 국내 관광정보 DB서비스의 수준을 파악하고 관광정보제공자에게 개선해야 될 문제점을 제시하고자 한다. 그러므로 관광정보 DB서비스의 개념을 정립하고 관광정보 DB서비스의 현황을 고찰하고자 Bailey와 Pearson의 연구에서 제시한 39가지 요인 중에서 관광정보 DB서비스와 관련된 요인을 추출하고 의미를 재정의하여 HiTEL의 이용자를 대상으로 첫째, 정보서비스의 메뉴별 선호도 둘째, 관광정보 DB서비스의 만족도 셋째, 관광정보 DB서비스의 각 메뉴별 선호도와 만족도 넷째, 이용자 특성별로 각 메뉴의 선호도를 비교분석 다섯째, 관광정보 DB서비스의 만족요인을 분석하였다. 관광정보 DB서비스의 전반적인 만족도는 평균치(4.0)보다 저조한 3.85로서 저조하게 나타나고 있다. 즉, 관광정보의 이해도(4.55)는 평균보다 다소 좋은 반면, 다른 관광정보의 만족도는 평균치 보다 저조하다. 특히 관광정보의 연결사정(3.68)과 관광정보의 제공속도(3.44)가 아주 낮게 나타났다. 한편 HiTEL이 제공하는 관광정보 DB서비스의 각 메뉴 중에서 가장 자주 이용되는 메뉴는 알림나라(40.2%)이며, 아시아나항공(22.5%), 농협일렉트로뱅크(13.7%), 대한항공(9.8%), 위너스 OK서비스(6.9%), MEET/매경SCOUT(6.9%)의 순으로 관광정보는 전반적으로 골고루 이용되고 있다. 또한, 메뉴별 관광정보 DB서비스의 만족도가 평균만족도보다 낮은 것은 알림나라(3.48), 농협일렉트로뱅크(3.84), 대한항공(3.90), 위너스OK서비스(3.95)로 나타났다. 그리고 각 메뉴별 이용자의 계층별 선호도는 첫째, 남성은 알림나라(40%), 아시아나 항공(23.16%), 농협일렉트로뱅크(12.63%)를 많이 이용하나, 여성은 알림나라(42.86%), 농협일렉트로뱅크(28.57%)를 주로 선호하는 것으로 나타났다. 둘째, 연령별 선호도는 나이가 많을수록 단순 관광안내정보인 알림나라, 농협일렉트로뱅크보다는 보다 항공관련 정보를 더욱 선호하는 것으로 나타났다. 셋째, 직업별 선호도는 학생과 사무직에 종사하는 사람이 가장 많은 메뉴를 이용하며, 전문직, 관리직, 기술직은 대체적으로 항공관련정보를 더 선호하는 것으로 분석되었다. 넷째, 학력별 선호도는 고학력자일수록 많은 메뉴를 이용하고 있으며, 다섯째, 가입시기별 선호도는 가입한 시간이 길어짐에 따라 항공관련정보를 선호하는 것으로 나타났다.

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Statistical methods for modelling functional neuro-connectivity (뇌기능 연결성 모델링을 위한 통계적 방법)

  • Kim, Sung-Ho;Park, Chang-Hyun
    • The Korean Journal of Applied Statistics
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    • v.29 no.6
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    • pp.1129-1145
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    • 2016
  • Functional neuro-connectivity is one of the main issues in brain science in the sense that it is closely related to neurodynamics in the brain. In the paper, we choose fMRI as a main form of response data to brain activity due to its high resolution. We review methods for analyzing functional neuro-connectivity assuming that measurements are made on physiological responses to neuron activation. This means that we deal with a state-space and measurement model, where the state-space model is assumed to represent neurodynamics. Analysis methods and their interpretation should vary subject to what was measured. We included analysis results of real fMRI data by applying a high-dimensional autoregressive model, which indicated that different neurodynamics were required for solving different types of geometric problems.

Networked Structure and Message Types of Newspaper Advertisements about Universities in Daegu and Gyeongbuk provinces in Korea: A Social Network Analysis (사회연결망 분석을 활용한 대학의 신문광고 게재 구조와 메시지 유형: 대구·경북 지역을 중심으로)

  • Song, Hwa-Young;Kim, Jae-Hun;Park, Han-Woo
    • The Journal of the Korea Contents Association
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    • v.21 no.6
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    • pp.197-206
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    • 2021
  • This study examined the networked structure and message types of newspapers advertisements in which universities have put in Daegu and Gyeongbuk provinces in Korea. Data were collected from July to September in 2020. As a result, universities preferred newspapers located in Daegu and Pohang areas. Next, universities have emphasized their cooperations with industries, basic competency capacities, and specialization programs in the advertising messages. When analyzing the findings in terms of university level, key words related to mid- to long-term development plans often appeared in the four-year schools. On the other hand, two or three-year universities frequently used an appeal that emphasized tangible performances. The findings showed the way in which the direction of university newspaper advertisements have been set in line with the rapidly changing environment.

A Study on Recent Research Trend in New Product Development Using Keyword Network Analysis (키워드 네트워크 분석을 이용한 NPD 연구의 진화 및 연구동향)

  • Pyun, JeBum;Jeong, EuiBeom
    • Journal of Korea Society of Industrial Information Systems
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    • v.23 no.5
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    • pp.119-134
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    • 2018
  • Today, many firms face the environment of high uncertainty and severe competition due to the rapid technology development and the diverse needs of customers. In the business environment, one of the most important ways to gain sustainable competitive advantage and future growth engine is related to NPD (New Product Development), which is a very important issue for practice and academia. Thus, this study intends to provide new values to practitioners and researchers related to NPD by analyzing current research trends and future trends in NPD field. For this, we bibliometrically analyzed keyword networks which consist of keywords that were already published in the eminent journals from Scopus database to generate insights that have not been captured in the previous reviews on the topic. As a result, we could understand the extant research streams in NPD field, and suggest the changes of specific research topics based on the connected relationships among keywords over the time. In addition, we also foresaw the general future research trends in NPD field based on the keywords according to preferential attachment processes. Through this study, it was confirmed that NPD keyword network is a small world network that follows the distribution of power law and the growth of network is formed by link formation by keyword preferential attachment. In addition, through component analysis and centrality analysis, keywords such as Innovation, New product innovation, Risk management, Concurrent engineering, Research and development, and Product life cycle management are highly centralized in NPD keyword network. On the other hand, as a result of examining the change of preferential attachment of keywords over the time, we suggested the required new research direction including i) NPD collaboration with suppliers, ii) NPD considering market uncertainty, iii) NPD considering convergence with the other academic areas like technology management and knowledge management, iv) NPD from SME(Small and medium enterprises) perspective. The results of this study can be used to determine the research trends of NPD and the new research themes for interdisciplinary studies with other disciplines.

Analysis of Learners' Preferences for Computer Solving Methods (학습자의 컴퓨터 문제해결 선호방법 분석)

  • Park, Sunju
    • Journal of The Korean Association of Information Education
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    • v.22 no.1
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    • pp.113-122
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    • 2018
  • Collaboration and assistance among peer learners are essential factors for successful learning outcomes. However it is important to investigate students' preferences for computer problem solving methods and interrelationships, since students tend to solve problems more and more by themselves. This is because of the importance of giving appropriate instructions to students. In this context, this paper shows the analysis of the preferred methods and interrelationships of studnets' preferences upon encountering difficulties during computer usage by collecting data from 231 students in K national university of education. As a result, the result shows that students tend to solve problems without asking as they have higher abilities in computer usage, which was also shown to increase along with their grade levels. Furthermore, it showed that students who have family members and relatives, and who are using the internet are more satisfied with their problem solving. Lastly, it is possible to grasp the computer problem solving network within the department by using social network analysis, so it can be used as reference data for selecting the peer learners, which will help to operate the customized computer education practice.

Comparative Study about Interview Surveys on Water Resources Development and Management in Sustainability's context in Korea (지속가능성 맥락에서 국내 수자원 개발과 관리에 관한 설문조사들에 대한 비교 연구)

  • Kang, Min-Goo;Park, Seung-Woo;Kim, Hak-Kwan
    • Proceedings of the Korea Water Resources Association Conference
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    • 2008.05a
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    • pp.1515-1519
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    • 2008
  • 유역, 수계, 지역, 국가 등과 같은 거대 시스템은 사회 및 경제 시스템, 자연 시스템, 생태 시스템 등으로 구성이 되어 있으며, 이들은 상호작용과 피드백을 하면서 복잡하게 연결되어 있다. 이러한 시스템은 기후, 구성 부시스템, 사회적 선호도, 패러다임 등의 변화에 따라 변한다. 특히, 사회적 선호도나 패러다임과 같은 가치 시스템의 변화는 수자원 이용과 관리에 영향을 미치기 때문에 다양한 방법으로 수요자의 요구를 파악해야 하며, 이를 수자원 계획과 운영에 반영해야 한다. 따라서 수요자와 전문가들의 의견을 주기적으로 조사하여 수자원 상태를 평가하고 문제점을 파악하여 향후 발전 방향을 수립할 필요가 있다. 본 연구에서는 국내에서 실시된 수자원 개발과 관리와 관련된 설문조사 결과를 수집하여 이들을 비교 분석하였다. 이 분석에서는 지속가능성을 맥락으로 하여 설문대상과 설문시기의 변화에 따른 수자원 개발과 관리와 관련된 의견들의 차이를 분석하였으며, 설문조사 결과들을 종합하여 향후 국내 수자원 관리와 개발 방향을 제시하였다.

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A Study on the Characteristics of Human Resources Required in Electronics Company (미래 융합기술사회에서 전자기업의 인재상 분석)

  • Lim, Jung-Yeon
    • Journal of Internet of Things and Convergence
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    • v.3 no.2
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    • pp.33-39
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    • 2017
  • The purpose of this study is to analyze the characteristics of talents required in electronic companies in the 4th industrial revolution. we conducted a network analysis on the key talent of the companies presented in over 100 job announcements to companies in the electronics industry. The results of the study are as follows. First, electronic companies showed the most favored creative talents, preferring collaborative talent and challenging talent. Second, looking at the core definitions of talent, change, response, problem solving, performance creation, communication, challenge, professionalism, enthusiasm, development, aggressiveness and spontaneity were used. In other words, key keywords emerging from the 4th industrial revolution were being used continuously. Third, in the Centrality analysis, talented people who emphasize humanity also appeared. Based on the study, it suggested that manpower training of the 4th Industrial Revolution.