• Journal of Korean Institute of Industrial Engineers
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• v.40 no.4
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• pp.375-381
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• 2014

Data mining is a process of discovering useful patterns or information from large amount of data. Decision tree is one of the data mining algorithms that can be used for both classification and prediction and has been widely used for various applications because of its flexibility and interpretability. Decision trees for classification generally generate a number of rules that belong to one of the predefined category and some rules may belong to the same category. In this case, it is necessary to determine the significance of each rule so as to provide the priority of the rule with users. The purpose of this paper is to propose a rule selection method in classification tree models that accommodate the umber of observation, accuracy, and effectiveness in each rule. Our experiments demonstrate that the proposed method produce better performance compared to other existing rule selection methods.

• Asia Marketing Journal
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• v.18 no.4
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• pp.99-124
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• 2017

Little research on sensory study has been conducted from a marketing perspective and most of sensory studies have been done from a science perspective. Thus, this study examined wine sensory perceptions in the consumers' minds, which is how wine consumers associate grape variety Shiraz/ Syrah by the three different region of origins with specific sensory images. Total 234 questionnaires were collected from online wine community members at restaurants in Korea. The main results show that the most two shared sensory images of Shiraz/ Syrah were 'Dry' and 'Fruity' across the three region of origins. For Barossa Shiraz, the unique images were mainly found in Aroma image category such as 'Chocolate', 'Prune', whereas for Rhone Syrah, the unique images were mainly revealed in Overall image category e.g. 'Deep', 'Fascinating'. Additionally, this study confirmed that Maipo Valley is not recognizable region of origin of Shiraz/ Syrah. This study employed a free choice, Pick Any and conducted correspondence analysis to find out the degree of associations of sensory images and each region of origin.

• Knowledge Management Research
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• v.19 no.2
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• pp.47-68
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• 2018

Business environment is shifting from industrial economy to knowledge based economy. Enterprises go through numerous trials for successful management in changing environment. Along with trial tests, research area has been growing simultaneously. Unlike initial research which focused on basic concepts such as: form of business model and success points. Current research emphasizes on actualization of business that enterprises plan, which brought academic research with perplex form of knowledge structure. On the other hand, there is limitation in understanding business model systematically due to preceding research primarily centered on analyzing definition and case study. In order to analyze knowledge structure, this study utilized social network analysis based on "relationship". For the analysis, 13,412 keywords were extracted from 36years worth of article or research related to business model stored in SCOPUS database. From the analysis, it was shown core research subject was INNOVATION and the number of co-authors has increased due to the academic diversity. Business model research is divided into five sub-categories (E-commerce, SMEs, sustainability, open-source, and e-book). Through cognitive map analysis on each of research characteristics of sub-category, it has shown that E-commerce, SMEs, sustainability, and open-source are core categories.

• Journal of Korean Academy of Nursing Administration
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• v.12 no.1
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• pp.76-93
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• 2006

Purpose: The purpose of this study was to define the core components required of nurses to provide quality nursing care to patients and analyze the significance of these components in the hospital's various units to maintain a high level of competence among nurses. Method: The study evaluated 3 categories included 35 subcategories with 148 core components that were derived from literature review and interviews of nursing professionals. The nursing professional category included 18 subcategories with 98 components, the organizational culture category included 4 subcategories with 16 components, and the temperament-attitude category included 13 subcategories with 34 components. The study included 335 nurses with more than one year of hospital experience and measured disparities among different hospital units. The data was analyzed with SPSS-Win 10.0, differing perceptions of the importance of general traits among the participants were measured using standard deviation, and differing perceptions of the importance of professional traits among the participants were assessed using ANOVA and subsequently with the Bonferroni Test. The reliability of the aforementioned research tools were evaluated using the Cronbach's ${\alpha}$. Result: The results of the study were as follows: 1. Among the three categories, temperament-attitude category was perceived to be the most important, followed by nursing professional category and organizational culture category. Among the ten most important subcategories within the three categories, safety and infection prevention as well as responsibility were perceived to be the most important, followed by promotion of physiologic adaptation, document management and presentation, self-control, ethics, observance law, coping with emergency, humanity, and medication. 2. The relative importance of category associated with the core competencies within the hospital unit were as follows : 1) The units that rated nursing professional category as being the most significant were: internal medicine, surgical unit, mother-child unit, emergency room, intensive care unit, and operating room, in that order. 2) The units that rated the organizational culture competencies as being the most significant were: mother-child unit, internal medicine, surgical unit, emergency room, operating room, and intensive care unit, in that order. 3) The units that rated temperament-attitude category as being the most significant were: internal medicine, surgical unit, emergency room, mother-child unit, operating room, and intensive care unit, in that order.

• Journal of Distribution Research
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• v.10 no.4
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• pp.1-22
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• 2005

The major objectives of this study are twofold. The first is to discover which in-store tactics influence store performance when a retailer implements category management in variety enhancer and fill-ins categories. The second is to analyze how and why specific in-store tactics achieve better or worse performance than other in-store tactics across categories. The data were collected using scanner data and direct observations in 'A' discount store which is one of the representative discount stores in Korea. The in-store tactics were measured by product assortment, temporary price discount, price and non-price promotion, and shelving. The store performance was measured by sales and gross margin return on inventory investmant(GMROI). Empirical results analyzed by multiple regression were as follows: In variety enhancer category, the significant factors affecting sales were product assortment, temporary price discount, price promotion, and shelving. Non-price promotion also influenced GMROI positively but product assortment impacted on GMROI negatively. In fill-ins category, the significant factors affecting sales and GMROI were product assortment and shelving. However, the other factors such as temporary price discount, price promotion, and non-price promotion had no significant influence on both sales and GMROI. This paper presents a number of theoretical and managerial implications of the empirical results and concludes by addressing limitations and future research directions.

• Journal of the Korea Fashion and Costume Design Association
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• v.4 no.3
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• pp.33-42
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• 2002

The purpose of this study was to find out criteria for classifying fashion brand from consumer point of view in order to develop strategy of fashion brands and to manage brand effectively and systematically, and to suggest theoretical frame for application of these criteria. Survey was used as a research method. Subject were 422 age of 20-30 women living in and near Seoul. Questionnaires was developed to based on 37 classification criteria, and SPSS package program were used to analyze data. The results of this study were as follows: First, factor analysis considering 37 classification criteria identified 8 factors as classification criteria. They were the level of brand form, the level of product concept, the level of management item, the level of brand sales ability, the level of customer management, the level of brand advertizing and awareness, the level of brand value, the level of product lead ability. Second, the most important factor was the level of customer management, but comparatively factor of the level of brand sales ability the level of brand value was less important. Third, consumer cognized difference of criteria for classifying fashion brands. And the level of product lead ability was the most important factor in women's wear category and the level of brand form was in general casual wear category.

• Journal of Korean Society of Archives and Records Management
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• v.20 no.1
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• pp.47-67
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• 2020

Unless the records appraisal system is properly overhauled, there is no future for public records management. This study aims to highlight challenging issues and present improvement tasks necessary for the readjustment of the public records appraisal system at the national level. First, public records appraisal policies are divided into five categories: i) statements on appraisal policy and selection criteria, ii) appraisal tools such as disposition authorities, iii) subject of appraising, iv) appraisal procedures, and v) responsibility and authority in appraisal and disposition process. Second, the domestic situation is identified for each category. Third, policies of the United States, United Kingdom, Australia, and Canada are compared, and implications are derived for each category. Fourth and last, the tasks for the readjustment of the public appraisal system are proposed based on these analyses.

• Journal of Korean Academy of Nursing
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• v.38 no.6
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• pp.789-801
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• 2008

Purpose: The purpose of this study was to develop a substantive theory of case management (CM) practice by investigating the experience of nurse case managers caring for Medical Aid enrollees in Korea. Methods: A total of 12 nurses were interviewed regarding their own experience in CM practice. Data were recorded and analyzed using grounded theory. Results: Empowerment was the core category of CM for Medical Aid enrollees. The case managers engaged in five phases as follows, phase of inquiring in advance, building a relationship with the client, giving the client critical mind, facilitating positive changes in the client's use of healthcare services, and maintaining relationship bonds. These phases moved gradually and were circular if necessary. Also, they were accelerated or slowed depending on factors including clients' characteristics, case managers' competency level, families' support level, and availability of community resources. Conclusion: This study helps understand what CM practice is and how nurses are performing this innovative CM role. It is recommended that nurse leaders and policy makers integrate empowerment as a core category and the five critical CM phases into future CM programs.

• Journal of the Korea Society of Computer and Information
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• v.23 no.10
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• pp.103-109
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• 2018

In this paper, we propose a dynamic document classification method which breaks away from existing document classification method with artificial categorization rules focusing on suppliers and has changing categorization rules according to users' needs or social trends. The core of this dynamic document classification method lies in the fact that it creates classification criteria real-time by using topic modeling techniques without standardized category rules, which does not force users to use unnecessary frames. In addition, it can also search the details through the relevance analysis by calculating the relationship between the words that is difficult to grasp by word frequency alone. Rather than for logical and systematic documents, this method proposed can be used more effectively for situation analysis and retrieving information of unstructured data which do not fit the category of existing classification such as VOC (Voice Of Customer), SNS and customer reviews of Internet shopping malls and it can react to users' needs flexibly. In addition, it has no process of selecting the classification rules by the suppliers and in case there is a misclassification, it requires no manual work, which reduces unnecessary workload.

• Research in Community and Public Health Nursing
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• v.20 no.2
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• pp.123-133
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• 2009

Purpose: This study aimed to classify nursing interventions by developing a list of interventions for family nursing care. Methods: A new intervention list was confirmed after the researchers' discussion and professional consult. All possible interventions were re-organized. Results: Five grand categories were identified, which include health education, providing direct nursing care, utilization and referral of community resources, reinforcing family resources, and stress management. The category of health education consists of anticipatory guidance, training and education, providing information, and consult and motivation. The category of providing direct nursing care consists of identifying problem, providing technical nursing, providing family tailored nursing care, family contract, monitoring or evaluation, and collaboration with experts. The utilization and referral of community services includes utilization of health care facilities, utilization of social welfare facilities, use of neighbors, friends, and relatives, connecting to professionals or supporting groups, and utilization of other sources. Reinforcing family resources includes reinforcing economic resources, reinforcing physical resources, and reinforcing human resources. Stress management includes reorganization of perception, resolving conflicts, division of role, preparing communication strategies, time management, creating familiarity, supporting spirituality, and developing sense of humor. Conclusion: This study provides useful resources to promote nursing activities by identifying possible family nursing interventions.