• Journal of the Korean Institute of Intelligent Systems
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• v.13 no.5
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• pp.526-529
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• 2003

Recommender systems or collaborative filtering are methods to identify potentially interesting or valuable items to a particular user Under the assumption that people with similar interest tend to like the similar types of items, these methods use a database on the preference of a set of users and predict the rating on the items that the user has not rated. Usually the preference of a particular user is liable to vary with time and this temporal variation may cause an inaccurate identification and prediction. In this paper we propose a method to adapt the temporal variation of the user preference in order to improve the predictive performance of a collaborative filtering algorithm. To be more specific, the correlation weight of the GroupLens system which is a general formulation of statistical collaborative filtering algorithm is modified to reflect only recent similarity between two user. The proposed method is evaluated for EachMovie dataset and shows much better prediction results compared with GrouPLens system.

• Journal of Korea Port Economic Association
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• v.30 no.1
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• pp.57-71
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• 2014

Information which port provide to users including shipping companies is essential information for their business performance. Thus, information service of several services which port provide to shipping company is also very important port-logistics service. However, despite of this importance, there have been little research related to port-logistics information service. The aim of this study is to analyze the satisfaction of information service for port logistics. To achieve this objective, evaluation criteria consisting of 16 items based on the previous research was established. And satisfaction index that can effectively show the current level of information service for port logistics was developed. The results of analysis showed that satisfaction index of information service provided by Busan port was 61.90. And from the data analysis, it was revealed that current level of information service in whole area was less than 63 points. It was implied that improvement for overall port-logistics information service was needed. Finally, from the follow-up research, it was found that information service provided by Busan port have weakness in the aspects of unification of information and celerity of information.

• Bulletin of Food Technology
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• v.16 no.3
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• pp.19-72
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• 2003

고도의 정보사회가 될 것으로 예견되는 21세기 전 세계는 창의적이고 원천적인 과학기술을 지속적으로 창출하면서 선진적 우위확보를 위해 치열한 경쟁을 벌이고 있다. 우리나라도 지금까지 이룩한 경제성장을 발판으로 이제부터는 더욱 생산적이고 독창적인 세계 일류 지식과 과학기술을 창출해 내야 할 위치에 있다. 세계적으로 새로운 지식은 대부분 학술지와 도서를 통해 발표되고 있으며, 미국의 과학정보기구인 ISI(Institute for Scientific Information)는 세계의 우수 학술지를 평가하여 그 중에서 가장 영향력이 높은 3~4%의 학술지를 SCI(Science Citation Index), SSIC(Social Science Citation Index), AHCI(Arts and Humanities Citation Index)로 전별하여 발표하고 있음은 잘 알려진 바와 같다. 우리 학계에서도 수 년 전부터 연구업적 등의 평가에 이들 분류를 적극 활용하고 있으며, 개개의 연구자들도 연구성과를 SCI 등에 등재된 학술지에 발표하기 위한 노력을 배가하고 있는 실정이다. 그러나 안타까운 것은 우리나라에서 발간되는 학술지 중 과학기술 분야 단 5종만이 SCI에 등재되어 있을 뿐이어서 우리의 학문이 세계적으로 교류되고 인정받는데 상대적으로 불리한 위치에 있다는 사실이다. 국내 학술지가 이들Index에 등재될 경우 우리의 연구성과가 보다 빠르고 쉽게 국제적으로 소개.인정되며, 이는 우리의 과학기술 수준을 한 단계 높이는데 첩경이 될 것이라는 점은 의심의 여지가 없다. 과학기술 평가과정은 측정 가능한 연구투자와 연구결과 현상으로 간주할 수 있는데, 일반적으로 연구투자는 연구투자에 필요한 모든 요소들이 실체적이며 평가하는 데에 있어서 인력, 재정 자원, 장비, 재료, 건물 등과 같이 구체적이고 경험을 요구하지 않기 때문에 그 모든 연구결과보다 평가하기가 용이하나 과학기술의 연구결과는 연구 과정을 통해 보다 비실체적이고 양적으로 측정하기 어려운 지식으로 구성되어 있어 평가하는데 어려움이 뒤따른다. 과학기술 연구결과를 양적이나 질적으로 측정하는데 있어 일반적으로 이용되는 시스템은 없으나 국가의 과학기술 수준은 보통 그 나라 과학기술 활동의 연구결과를 과학기술 생산성이나 연구결과물 즉 논문 등의 출판을 통한 배포나 인용분석 등에 기초한 양적 평가지표를 이용해 측정하는 서지적 방법에 의해 평가되고 있다.연구활동 결과로 발표된 연구논문은 새로운 연구논문의 자료로 인용되게 되는데, 일반적으로 인용이 많이 된 논문일수록 질적인 가치가 높다고 하므로 논문의 발표량과 인용된 횟수는 연구활동을 평가하는 척도로 활용점에 따라 과학기술분야 논문의 국가별, 기관별, 분야별 논문수와 피인용도는 과학기술 수준 평가의 척도가 될 수 있으며 이러한 평가는 과학기술 정책 수립 및 투자, 연구활동에 대한 평가 등의 중요한 자료로 활용될 수 있다. 과학기술분야 전반에 걸친 SCI 기반의 NSI, NCR 데이터베이스를 분석하여 우리나라 과학기술분야의 수준을 평가할 수 있는 지표를 산출하여 우리나라의 과학기술 수준을 정확히 파악하고, 세계 추세를 분석하여 앞으로 나아갈 정책방향을 설정하는데 도움이 되도록 하며, 국내 기관별, 분야별 분석을 통하여 과학기술 수준을 평가할 수 있는 객관적인 자료를 제공함과 동시에 국내 연구 인력간의 건전한 경쟁을 유도하여 과학기술 발전에 기여하고자 한다.

• Journal of the Korean Institute of Landscape Architecture
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• v.43 no.3
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• pp.27-42
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• 2015

This study reviews the current status of the Korean landscape resources survey and foreign cases in order to determine the meaning and importance of it. Several cases are compared based on the evaluation method, the evaluation criteria and the application plan. Twelve domestic cases of landscape resources survey are reviewed to understand the current status and limitations of the Korean status, and 5 foreign cases to determine the implications for the Korean system. As the result of the analysis, some implications are drawn for domestic landscape resource system. First of all, it is suggested to establish more objective criteria to evaluate and select landscape resources. Various values of landscape resources should be included into the criteria and more people, as well as experts, should participate to reflect local conditions. Secondly, the management for the landscape resources must be implemented continuously. It is important to introduce a periodic reassessment system and to construct and manage a database of the landscape resources. Lastly, the landscape resource system should be integrated into other programs such as an environmental impact assessment and landscape planning. For a better landscape resource management system and efficient evaluation, resources should be comprehensively managed including various landscape types. It is essential to establish supporting policies and legislation. This research covered only the current status of the landscape resource survey and reviewed a limited number of foreign cases. Despite these limitations, it is meaningful for showing the importance of landscape resource management and to suggest some future tasks for better landscape resources management.

• Spatial Information Research
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• v.9 no.2
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• pp.239-261
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• 2001

A large suite of official statistical data sets has been compiled for geographical units under the national directives, and it is the quantitative regional analysis procedures that could add values to them. This paper reports our attempts at prototyping a statistical GIS which is capable of serving over the Web a variety of regional analysis routines as well as value-added statistics and maps. A pilot database of some major statistical data was ingested for the city of Seoul. The baseline subset of regional analysis methods of practical usage was selected and accommodated into the business logic of the target system, which ranges from descriptive statistics, regional structure/inequality measures, spatial ANOVA, spatial (auto) correlation to regression and residual analysis. The leading-edge information technologies including the application server were adopted in the system design and implementation so that the database, analysis modules and analytic mapping components may cooperate seamlessly behind the Web front-end. The prototyped system supports tables, maps, and files of downloadable format for input and output of the analyses. One of the most salient features of out proposed system is that both the database and analysis modules are extensible via the bi-directional interface for end users; The system provides users with operators and parsers for algebraic formulae such that the stored statistical variables may be transformed and combined into the newly-derived set of variables. This functionality eventually leads to on-the-fly fabrication of user-defined regional analysis algorithms. The stored dataset may also be temporarily augmented by user-uploaded dataset; The extension of this form, in essence, results in a virtual database which awaits for users commands as usual. An initial evaluation of the proposed system confirms that the issues involving the usage and dissemination of information can be addressed with success.

• Journal of the Korean Data and Information Science Society
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• v.24 no.3
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• pp.411-425
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• 2013

The importance and necessity of the credit loan are increasing over time. Also, it is a natural consequence that the increase of the risk for borrower increases the risk of non-performing loan. Thus, we need to predict accurately in order to prevent the loss of a credit loan company. Our final goal is to build reliable and accurate prediction model, so we proceed the following steps: At first, we can get an appropriate sample by using several resampling methods. Second, we can consider variety models and tools to fit our resampling data. Finally, in order to find the best model for our real data, various models were compared and assessed.

• The KIPS Transactions:PartD
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• v.16D no.6
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• pp.845-850
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• 2009

Use of XML data has been increased with growth of Web 2.0 environment. XML is recognized its advantages by using based technology of RSS or ATOM for transferring information from blogs and news feed. Bitmap clustering is a method to keep index in main memory based on Relational DBMS, and which performed better than the other XML indexing methods during the evaluation. Existing method generates too many clusters, and it causes deterioration of result of searching quality. This paper proposes k-Bitmap clustering method that can generate user defined k clusters to solve above-mentioned problem. The proposed method also keeps additional inverted index for searching excluded terms from representative bits of k-Bitmap. We performed evaluation and the result shows that the users can control the number of clusters. Also our method has high recall value in single term search, and it guarantees the searching result includes all related documents for its query with keeping two indices.

• Annual Conference on Human and Language Technology
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• 1999.10e
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• pp.257-264
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• 1999

자연언어 처리에 있어 문장의 성분 구조를 파악하는 통사적 해석에서는 애매성 있는 결과가 많이 생성된다. 한국어의 경우 어순 등의 통사적 특성뿐 아니라 상황과 의미, 문맥이 문장의 분석에 더 중요한 역할을 하기 때문에 문맥 자유 문법에 의한 접근 방법만으로는 중의적 구조의 해결이 어렵다. 이는 또한 의미 분석시 애매성을 증가시키는 원인이 된다. 이러한 통사적, 의미적 중의성 해결을 위해 용언 중심의 하위범주화 사전을 구축하였다. 본 논문에서는 용언에 따라 제한될 수 있는 하위범주 패턴을 정의하고 패턴에 따라 하위범주 사전을 구축하였다. 하위범주화 사전에는 명사의 시소러스와 정합하여 보어를 선택 제한(Selectional Restriction)할 수 있도록 용언과 명사와의 의미적 연어 관계에 따라 의미마커를 부여했다. 말뭉치를 통해 수집된 용언 12,000여개를 대상으로 25,000여개의 하위범주 패턴을 구축하였고 이렇게 구축한 하위범주화 사전이 120,000여 명사에 대한 의미를 갖고 있는 계층 시소러스 의미 사전과 연동하도록 하였다. 또한 논문에서 구현된 하위범주화 사전이 구문과 어휘의 중의성을 어느 정도 해소하는지 확인하기 위해 반자동적으로 의미 태깅(Sense Tagging)된 2만여 문장의 말뭉치를 통해 검증 작업을 수행하고, 의존관계와 어휘의 의미를 포함하고 있는 말뭉치에 하위범주 패턴이 어느정도 정합되는지를 분석하여, 하위범주 패턴과 말뭉치의 의존관계만 일치하는 경우와 어휘의 의미까지 일치하는 경우에 대해 평가한다. 이 과정에서 하위범주 패턴에 대한 빈도 정보나, 연어 정보를 수집하여 데이터베이스에 포함시키고, 각 의미역과 용언의 통계적 공기 정보 등을 추출하는 방법도 제시하고자 한다.을 입증하였다.적응에 문제점을 가지기도 하였다. 본 연구에서는 그 동안 계속되어 온 한글과 한잔의 사용에 관한 논쟁을 언어심리학적인 연구 방법을 통해 조사하였다. 즉, 글을 읽는 속도, 글의 의미를 얼마나 정확하게 이해했는지, 어느 것이 더 기억에 오래 남는지를 측정하여 어느 쪽의 입장이 옮은 지를 판단하는 것이다. 실험 결과는 문장을 읽는 시간에서는 한글 전용문인 경우에 월등히 빨랐다. 그러나. 내용에 대한 기억 검사에서는 국한 혼용 조건에서 더 우수하였다. 반면에, 이해력 검사에서는 천장 효과(Ceiling effect)로 두 조건간에 차이가 없었다. 따라서, 본 실험 결과에 따르면, 글의 읽기 속도가 중요한 문서에서는 한글 전용이 좋은 반면에 글의 내용 기억이 강조되는 경우에는 한자를 혼용하는 것이 더 효율적이다.이 높은 활성을 보였다. 7. 이상을 종합하여 볼 때 고구마 끝순에는 페놀화합물이 다량 함유되어 있어 높은 항산화 활성을 가지며, 아질산염소거능 및 ACE저해활성과 같은 생리적 효과도 높아 기능성 채소로 이용하기에 충분한 가치가 있다고 판단된다.등의 관련 질환의 예방, 치료용 의약품 개발과 기능성 식품에 효과적으로 이용될 수 있음을 시사한다.tall fescue 23%, Kentucky bluegrass 6%, perennial ryegrass 8%) 및 white clover 23%를 유지하였다. 이상의 결과를 종합할 때, 초종과 파종비율에 따른 혼파초지의 건물수량과 사료가치의 차이를 확인할 수 있었으며, 레드 클로버 + 혼파 초지가 건물수량과 사료가치를 높이는데 효과적이었다.\ell}$ 이었으며 , yeast extract 첨가(添加)하여 배양시(培養時)는 yeast extract

• Journal of the Korean Society for Library and Information Science
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• v.52 no.1
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• pp.259-283
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• 2018

This research aims at understanding the differences between expert and general users' perceptions regarding publication preferences for Korean classics collations and translations in order to formulate future directions for these materials. For this purpose, an overview of changes in publishing in general as well as current status of collation/translation of Korean classics in particular are being identified. An online questionnaire was carried out in order to collect data regarding perceptions and preferences of expert users and general users of Korean classics. The results are based on the analyses of more than 1,000 responses. The analyses show that electronic books will not completely replace printed books and publishing both electronic and printed books in tandem for the time being is most preferable in order to satisfy varying user needs. Statistical analysis shows differences in terms of use value, value from possession, and readability of electronic and printed books in the two groups of users. However, as for the value of preservation by relevant institutions, there was a statistical difference between two groups towards printed books unlike their electronic equivalents. The research shows strong preference towards printed forms of classics collations and translations for the purpose of scholarly research and translation. Actual usage statistics reveal much heavy use of online database of classics translations compared to the use of available electronic books. For future publishing decisions for classics collations and translations will need to take into consideration of their special characteristics and symbolic nature. Proper representation of these materials into electronic format would require a standardized platform that enable various uses in different environments.

• Therapeutic Science for Rehabilitation
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• v.9 no.4
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• pp.83-93
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• 2020

Objective : This study was designed to analyze the concepts of current use and meaningful activity in the elderly and provide basic data on establishing concept of participation in meaningful activity and clinical applications. Methods : Using RISS, Google Scholar, Published and DBpia databases, the literature published in the journal was collected from January 2010 to July 2019. The main search term used was "meaningful activity" and 10 of the 182 papers were finally selected for analysis. Based on the qualitative level assessment study by Arbesman, Scheer and Lieberman (2008), the selected paper were classified as Level I to Level V. Results : Five out of 10 studies were published within the last 5 years, indicating that meaningful activity-related studies have been conducted recently. Through prior studies, the concept of meaningful activities was summarized as those that enable individuals to realize their values, achieve their goals and experience positive emotions in their daily lives. Conclusion : The concepts and direction of assessment tools derived from this study will be the basis for the study of 'meaningful activity participation' as a solution to the aging society's elderly problems in the future.