• 한국경영과학회지
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• 제29권2호
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• pp.59-75
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• 2004

Recommendation is a personalized information filtering technology to help customers find which products they would like to purchase. Collaborative filtering works by matching customer preferences to other customers in making recommendations. But collaborative filtering based recommendations have two major limitations, sparsity and scalability. To overcome these problems we suggest using adjusted product hierarchy, grain. This methodology focuses on dimensionality reduction and uses a marketer's specific knowledge or experience to improve recommendation quality. The qualify of recommendations using each grain is compared with others by several experimentations. Experiments present that the usage of a grain holds the promise of allowing CF-based recommendations to scale to large data sets and at the same time produces better recommendations. In addition. our methodology is proved to save the computation time by 3∼4 times compared with collaborative filtering.

• 대한안전경영과학회지
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• 제17권2호
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• pp.207-214
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• 2015

The purpose of this paper is an application of AHP(Analytic Hierarchy Process) in the priority setting of promising technology in division of senior friendly product based on the previous studies. In this paper, the decision criteria for evaluating promising technologies in division of senior friendly product are identified and the hierarchical structure of decision making process is developed systematically. Subsequently the values of weights for relative importance among decision criteria are derived using AHP methodology, and the score of importance of promising technology in division of senior friendly product with respect to each criterion is evaluated. Finally the score of each promising technology in division of senior friendly product is quantified in order to prioritize them. We discuss implications of our results with a viewpoint of technology policy in division of senior friendly product.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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• pp.545-553
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• 2005

The purpose of this study is to analyse consumer injury and to find current status of industrial consumer injury in the field of consumer product. Also the subject under analysis is to develop a design guidance for the consumer product safety. we used consulting data of Korea Consumer Protection Board, Korea Product Liability Consulting Center and referred to statistic data of Korea National Statistical Office. Consumer injury data of Korea is insufficient comparing with leading industrialized nations. Therefore, we categorized hazard factors based on current injury data in Korea instead of analysing injury data statistically. And we analyse the hazard factors using the analytic hierarchy process in this study. Through the results, we defined the Consumer Injury Index(CII) to develop a design guidance for the consumer product safety.

• 시스템엔지니어링학술지
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• 제3권2호
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• pp.39-48
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• 2007

In this study, an overall product design process will be presented by using the Analytic Hierarchy Process(AHP) and robust design. From the conceptual design stage, the logical methods are used to select the appropriate concepts satisfying the customer requirements and the other conditions. The next phase is the embodiment design phase in which the deterministic and robust design approach are used to obtain the improvement in product design. Typically, this approach is applied for developing the simple bookshelf design. The results show the efficient approach which can be supported to develop the new product.

• 감성과학
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• 제7권1호
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• pp.29-40
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• 2004

디자인에 있어서 율동요소는 제품디자인에 대한 소비자의 심미적 반응에 영향을 미치는 조형요소의 하나라는 점이 이론 및 실무적으로 폭 넓게 받아들여지고 있다하더라도, 다른 조형요소에 비하여 율동요소에 대한 연구는 상대적으로 많은 연구가 이루어지지 못하였다. 또한 율동요소에 대한 기존 연구들도 율동요소가 제품디자인에 있어서 심미성 요소의 하나라는 단순한 내용을 전개하고 있을 뿐 제품디자인에 어떻게 적용되어져야 하는지에 대한 통찰력을 제공해 주지 못하고 있다. 따라서 본 연구에서는 제품디자인에 있어서 율동감의 표현이 가격수준과 브랜드 위계수준에 따라 어떻게 소비자의 심미적 반응에 영향을 미치는지에 대하여 검토하였다. 연구결과에 의하면 율동감은 분명히 심미성에 영향을 미치고 있는 요소인 것으로 나타나고 있다. 또한 율동감의 표현은 낮은 가격수준의 제품에서는 브랜드 위계수준과 상관없이 소비자의 심미적 반응을 증가시키는 것으로 나타났다. 그러나 이와는 달리 높은 가격수준의 제품에서는 율동감의 표현이 인지적 위험으로 인해 소비자의 심미적 반응을 감소시키는 것으로 나타났다. 다만, 브랜드 위계수준이 높은 경우에는, 인지적 위험과 브랜드 명성과의 상쇄관계로 인하여 율동감의 표현이 소비자의 심미적 반응을 증가시키는 것으로 나타났다. 이러한 본 연구의 결과는 디자이너들이 율동감 요소를 어떻게 이해하여야 하는지에 대한 시사점을 제공해 준다고 할 수 있다.

• 한국의류학회지
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• 제17권4호
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• pp.529-538
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• 1993

This study was intended to identify the hierarchy of clothing images, which is expected to be helpful in style classification and product positioning. A questionnaire consisted of 110 words expressing clothing images was developed, and eight clothing photographs were selected as stimuli. 289 female subjects aged between 22 to 37 responded to two of the eight photographs during September, 1991. 110 words were reduced to 62 words based on their independence before conducting factor analysis to identify the constructing factors of clothing images. Nine words with negative connotations were eliminated, because they are not sought in product development. To explain the hierarchy of clothing images, cluster analysis was applied. To observe the association of 53 words, dendrogram was introduced, and to interpret the result, eleven sub clusters were determined. This 11 clusters were continuously combined according to their similarities, until they integrated into one 'clothing image'. Two major division of image clusters were 'graceful and feminine image', and 'mannish and simple image'.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제11권2호
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• pp.157-164
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• 2005

무선 인터넷 기술과 모바일 컴퓨팅 기술의 발달로, M-Commerce가 PDA나 모바일 폰 등과같은 다양한 무선 장치상에서 실현되고 있다. 현재 M-Commerce를 위한 상품 컨텐츠는 목표 무선 장치의 특징을 충족할 수 있도록 새롭게 작성되고 있다. 이것은 자원의 중복이며, 자원 관리에 엄청난 노력이 요구된다. 따라서 현재 I-Commerce를 위해서 제공되고 있는 인터넷 상품 정보를 효과적으로 이용하는 것이 필요하다. 그러나 이러한 이용에는 적은 메모리 용량, 작은 디스플레이 화면, 낮은 수행속도 등의 모바일 장치의 많은 제약성이 고려되어야 한다. 본 논문에서는 모바일 폰 상에 인터넷 XML 상품 문서를 효과적으로 이용하기 위해 클라이언트에서 문서에 대한 객체계층구조를 구성하는 4가지 방법을 제안하고, 실험을 통해서 사용자 응답시간과 메모리 사용량 관점에서 비교, 분석한다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1989년도 추계학술발표회 발표논문초록집; 이화여자대학교, 서울; 23 Sep. 1989
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• pp.91-107
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• 1989

New product concept evaluation is one of the most important activities among many possible evaluation activities involved in the whole new product process. This paper aims at exploring the applicability of the Analytic Hierarchy Process(AHP) to this new product concept evaluation. To this aim, an AHP based concept evaluation model was formulated and explained using an illustrative example. A number of issues were also raised and discussed concerning the applicability of AHP to out problem. Finally, some further research areas were identified.

• 경영과학
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• 제29권1호
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• pp.33-56
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• 2012

Domestic LCD TV market is composed of two groups of products produced by major firms and small and medium enterprises. The major companies make the price relatively high, but the other makes lower in the same sizes. The model of the low price products does not make consumers choice when they choose LCD TV. This makes the questions of capability between difference price products. The reason above mentioned, the firms that include group of comparatively lower price, are worried about not increasing sale because of prejudice. This study is to find any interrelationship and evaluate the efficiency between the products using performance, exterior and brand power of product. In order to do this, a hybrid AHP/DEA evaluation model for comparison/valuation of LCD TV products is developed. The proposed process is; first, to derive hierarchy structure of LCD TV evaluation criteria using axiomatic design, second, to calculate the score of each LCD TV product through AHP analysis including weight calculation of evaluation criteria, and last, to evaluate the efficiency of LCD TV product by applying DEA by defining product scores as output and prices as input. It concludes that the high price products shows good efficiency, but there are some products with good exterior and brand power, not performance, also presenting good efficiency.

• Journal of Information Technology Applications and Management
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• 제23권3호
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• pp.71-86
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• 2016

This paper proposes a new software quality model composed of a hierarchy of software quality views and three software quality characteristics models. The software view hierarchy is composed of two levels : end view and means view at the first level, contingency view and intrinsic view as sub-views of means view. Three software quality characteristics models are activity quality characteristics model, contingency quality characteristics model, and intrinsic quality characteristics model, which correspond to end view, contingency view, and intrinsic view respectively. This paper also reclassifies characteristics of ISO/IEC 25000 series SQuaRE's software product quality model according to the proposed software quality model. The results illustrate clearly the shortcomings of SQuaRE's product quality model and how to overcome them. First of all, most of SQuaRE's product characteristics should be redefined and conceptually clarified according to the views on which they are really rested. Much more characteristics should be supplemented too. After that, rigorous empirical researches will become relevant. Causal relationships between activity quality characteristics and characteristics of means view should be empirically researched.