• Asia pacific journal of information systems
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• 제16권3호
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• pp.159-176
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• 2006

Collaborative filtering is one of the popular techniques for personalized recommendation in e-commerce. In collaborative filtering, user profiles are usually managed per product category in order to reduce data sparsity. Product diversification of Internet storefronts and multiple product category sales of e-commerce portals require cross-product category usage of user profiles in order to overcome the cold start problem of collaborative filtering. In this paper, we study the feasibility of cross-product category usage of user profiles, and suggest a method to improve recommendation performance of cross-product category user profiling. First, we investigate whether user profiles on a product category can be used to recommend products in other product categories. Furthermore, a way of utilizing user profiles selectively is suggested to increase recommendation performance of cross-product category user profiling. The feasibility of cross-product category user profiling and the usefulness of the proposed method are tested with real click stream data of an Internet storefront which sells multiple product categories including books, music CDs, and DVDs. The experiment results show that user profiles on a product category can be used to recommend products in other product categories. Also, the selective usage of user profiles based on correlations between subcategories of two product categories provides better performance than the whole usage of user profiles.

• 한국콘텐츠학회논문지
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• 제18권3호
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• pp.568-577
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• 2018

본 연구에서는 특정 제품군 내 선도 브랜드가 가지는 전형성을 브랜드 개성 평가를 통해 분석하였다. 사전조사를 통해 인스턴트 원두커피가 분석 대상 제품군으로 선정되었고, 일반 매장 판매 브랜드인 '카누', '루카', '수프리모' 세 개의 브랜드가 분석에 사용되었다. 연구결과, 선도 브랜드인 카누가 해당 제품군을 대표하는 브랜드 전형성을 확보하고 있는 것을 확인할 수 있었다. 카누의 경우, 진실, 능력, 성공, 세련 등 제품군이 보유하는 4가지 개성 차원을 동일하게 가지고 있었다. 루카의 경우, 능력, 진실, 세련 등 세 가지 개성차원이 공통적인 것으로, 수프리모의 경우는 세련과 능력 두 개의 개성차원만이 공통적인 것으로 나타났다. 각 개성차원을 구성하는 구성개념에 있어서도 카누의 경우가 다른 경쟁 브랜드들에 비해 상대적으로 높은 공통성을 보이고 있었다. 연구를 통해 브랜드 개성 평가를 바탕으로 한 브랜드의 전형성 평가에 대한 가능성도 확인할 수 있었다.

• 지식경영연구
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• 제15권4호
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• pp.79-103
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• 2014

This research investigates whether product types moderate the relationship between e-tailer characteristics and shopping attitudes in the context of online category killer stores. To identify the antecedents of consumer attitudes for category killer stores, the product types are characterized by the two dimensions of hedonic and utilitarian. A total of 268 responses were collected from consumers who experienced online category killer stores. The results show that the quality of information contained in a website, customer review, relational benefits, and the expertise of the e-tailer are important determinants for shopping attitudes of consumers. Regarding the moderating effects of product types, hedonic value significantly moderates the relationships between shopping attitudes and relational benefits/e-tailer expertise. However, utilitarian value does not significantly moderate the relationships between shopping attitudes and any of the e-tailer characteristics. Theoretical contributions of this study are the findings of moderating effects of hedonic value on the relationships between e-tailer characteristics and shopping attitudes. In addition, this study practically implies how companies can utilize these characteristics strategically for marketing and the selection of products.

• 대한수학회보
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• 제36권4호
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• pp.671-682
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• 1999

Using a base-point free version of the infinite symmetric product we define a fibrewise infinite symmetric product for any fibration $E\;\longrightarrow\;B$. The construction works for any commutative ring R with unit and is denoted by $R_f(E)\;l\ongrightarrow\;B$. For any pointed space B let $G_I(B)\;\longrightarrow\;B$ be the i-th Ganea fibration. Defining $M_R-cat(B):= inf{i\midR_f(G_i(B))\longrihghtarrow\;B$ admits a section} we obtain an approximation to the Lusternik-Schnirelmann category of B which satisfies .g.a product formula. In particular, if B is a 1-connected rational space of finite rational type, then $M_Q$-cat(B) coincides with the well-known (purely algebraically defined) M-category of B which in fact is equal to cat (B) by a result of K.Hess. All the constructions more generally apply to the Ganea category of maps.

• 유통과학연구
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• 제18권8호
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• pp.113-125
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• 2020

Purpose: The purpose of this paper is to investigate the effect of interaction between product category (fresh vs. indulgent product) and shopping options (shipping charge and delivery time) on customer satisfaction and purchase intent in an e-commerce context. When ordering groceries online, consumers begin to allocate a larger share of their grocery budget toward product categories that generally contain healthier items at the expense of product categories that generally contain more indulgent products. Moreover, customers are extremely sensitive to shipping options such as shipping charges and delivery time. Therefore, this research investigates the issue at a more segmented level to focus on the impact that one dimension of logistics service quality - product category, shipping charge, and delivery time have on customer satisfaction and purchase intent. Research design, data, and methodology: To test the theoretically derived priori hypotheses concerning product category, shipping charges, delivery time, satisfaction, and purchase intent, this research presented a scenario-based experiment. Eight treatment groups were assigned by the method of product category (fresh produce vs. indulgent product), shipping charge (free vs. paid), and delivery time (one-day vs. two to three days). A total of 240 subjects were divided into groups and exposed to one of the eight scenarios. Participant's purchase intention was the dependent variable, and ANOVA and L-matrix were used to analyze for main and interactive effects between factors. Conclusions: Results indicated that in tests 1 and 2, free shipping and fast delivery time increased consumer satisfaction as well as purchase intent, and fast delivery moderated the impact of free shipping on consumer satisfaction and purchase intent. Test 3 showed that the effect of free shipping on consumer satisfaction and purchase intent moderated by fast delivery for indulgent products. In contrast, fast delivery for fresh products moderated the effect of paid shipping on consumer satisfaction and purchase intent. Consistent with this proposed mechanism, the relative importance of fresh produce versus indulgent products highlights the effect of shipping options on consumer satisfaction and purchase intent when ordering the target product in an e-commerce context. We conclude with a discussion of the theoretical and practical implications of our findings.

• 한국식품영양학회지
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• 제25권1호
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• pp.205-213
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• 2012

This study investigated the life cycle of menus and made suggestions on the appropriate time for when new menus should be developed. For this purpose, a total of 636 customers who visited 'T' Restaurant more than 25 times in the past three years were used for analysis. After estimating product life cycles based on sales and selling period, an empirical study was conducted. In terms of product life cycle, a growth stage was observed in the category of pasta and pizza in both stores A and B, whereas sales in the rice category stayed constant. Regarding trend in seasonal sales, a big difference was detected between the two stores. While store A was already in the decline stage of the life cycle in all menu categories, store B remained in the growth stage. In terms of menu life cycle, the product life cycle of long-lived products was observed in the pasta category in both stores A and B. While the pizza category was in the growth stage, the product life cycle of long-lived products was observed in the rice category. It is expected that the results of this study could be useful in development of new menus and product life cycle management to fulfill diverse customer needs in the dining-out business.

• 복식
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• 제61권10호
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• pp.89-103
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• 2011

The purpose of this study is to analyze the effects of dominant brand, the quality variation among brands in the extension product category and the self-construals on consumer's attitude about extension products. The experimental design consist of three-way complex factors and 226 subjects participated for the study. The results showed that when there was fashion brand extension, whether or not there was an existing dominant brand in the extension product category, the quality variation among brands in the extension product category and the types of self-construals had a significant interaction effect on their favorableness and intention to purchase the extension products. Regardless of an existing dominant brand however, the group who had an interdependent self-construal showed higher favorableness and intention to purchase the extension products when the quality variation among brands in the extension product category was lower than when it was high, whereas the group who had an independent self-construal showed no significant difference of the favorableness and intention to purchase the extension products.

• 한국경영과학회지
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• 제36권3호
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• pp.107-120
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• 2011

The increased availability of store brand suppliers now provides retailers with opportunities to create their own lines of vertically differentiated multiple store brands within a product category. As the number of store brands increase, the retailer's shelf space becomes more crowded, which may force the retailer to consider dropping some national brands from its assortment. Despite these trends, the problem of product line design in a vertically differentiated product category has been analyzed mainly from a manufacturer's perspective in the marketing literature and it is not known to what extent the findings of the existing product line design literature provide applicable strategic guidelines for the new problem faced by retailers. In this study, we address this deficiency in the literature and conduct an in-depth study of the retailer's strategic design of a line of store brands and its assortment decision within the context of retail category management. We analyze the retailer's decision about not only how to design a line of store brands but also which national brand to drop from its assortment. The results of our analysis are as follows. First, if the retailer has to drop one of national brands from its assortment, it is the best for the retailer to drop the low-quality national brand rather than the high-quality national brand. Second, the retailer has to position the high-quality store brand relatively close to the high-quality national brand, remained on its shelf, in terms of quality so as to maximize the size of retail margin from the national brand. On the other hand, the retailer should set the quality of the low-quality store brand at a lower level than that of the low-quality national brand to increase the total category demand by attracting more price sensitive consumers. By doing so, the retailer can also minimize cannibalization between two store brands. Lastly, our analysis shows that the introduction of a line of store brands improves consumer welfare by increasing real values of all products on the shelf.

• 한국유통학회지:유통연구
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• 제12권3호
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• pp.23-48
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• 2007

전통적으로 제조업체는 자사 브랜드를 중심으로한 매장관리를 원하고, 유통업체 입장에서는 특정 브랜드가 많이 팔리는 것 보다는 여러 메이커 브랜드가 뒤섞여 카테고리 또는 전체매장의 매출이 높아지는데 관심이 있다. 최근 이러한 유통업체와 공급업체의 인식차이가 카테고리 관리 개념에 의해 좁혀지고 있다. 본 논문의 큰 연구목적은 점포유형과 시장포지션에 따라 어떤 카테고리 전술 즉 제품구색(브랜드의 수, 카테고리 내 브랜드 간의 분산구조), 가격정책(정규가격수준, 가격변화율), 매장진열(매장진열재고량), 상품보충(취급율, 품절율, 재고소진일) 등이 매출성과에 영향을 미치는 가를 분석하고자 하는 것이다. 다양성 추구 카테고리 역할을 하는 네 종류의 샴푸, 치약, 세탁세제, 주방세제 카테고리에 대한 성과 및 전술들에 대한 데이터를 전국의 2,859개의 대형슈퍼와 15,565개의 소형슈퍼로부터 수집한 닐슨자료를 가설검정에 이용하였다. 회귀분석과 Chow Test를 이용하여 분석한 결과 대형수퍼-시장선도자의 경우 품절율, 진열재고량, 브랜드분산, 재고소진일 등의 카테고리 전술들이 카테고리 매출액에 유의하게 작용하였고, 대형슈퍼-추종자의 경우는 진열재고량, 브랜드분산, 재고소진일 등의 전술들이 매출액 변화에 중요한 역할을 하였다. 소형슈퍼-시장선도자와 소형슈퍼-추종자의 경우는 동일하게 취급율, 진열재고량, 브랜드분산, 재고소진일 등의 카테고리 전술들이 카테고리 매출액에 유의한 영향을 주는 것으로 나타났다. 기대와는 달리 브랜드의 수와 가격정책은 점포유형과 시장포지션에 상관없이 모두 중요하게 작용하지 못하였다. 본 논문은 공급업체들이 왜 경쟁업체보다 시장에서 더 나은 또는 더 못한 성과를 얻는지를 파악할 수 있고 더 나아가 공급업체의 제한된 자원을 점포유형과 시장포지션에 따라 어떤 카테고리전술을 이용하여 재분배할 수 있는가에 대한 지침을 제공한다.

• 한국콘텐츠학회논문지
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• 제12권12호
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• pp.733-741
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• 2012

최근 많은 소비자들이 관심 있는 물품 카테고리에 대한 정보를 얻기 위한 목적으로 종합 쇼핑몰이나 가격 비교 사이트를 방문하고 있다. 하지만, 이러한 웹 사이트들은 종종 이들에게 많은 상품들과 판매자가 포함된 지나치게 방대한 정보를 제공하여 소비자들의 구매 결정을 효과적으로 지원하지 못한다. 따라서 현대 온라인 쇼핑 에이전트들은 검색된 정보를 사용자들에게 제공하기 전에 보다 지능적인 방법으로 이를 가공할 필요가 있다. 본 논문은 특정 물품 카테고리 내에서 많은 상품들이 분포하고 있는 주요 가격대를 식별하는 방법을 제안하고자 한다. 이를 위해 한 개 카테고리 내 상품의 가격들을 벡터로 표현하고, 여기에 k-means 군집 분석을 적용하여 서로 비슷한 가격 벡터들을 포함하는 군집을 형성한 다음, 각 군집에서 주요 가격대를 추출하는 방법을 적용하였다. 일반적으로 가격은 소비자들의 구매 결정에서 가장 중요한 요인 중 하나이기 때문에, 추출된 주요 가격대들은 온라인 쇼핑 이용자들이 효과적으로 상품을 검색하는데 도움이 될 것으로 기대된다.