• The KIPS Transactions:PartD
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• v.13D no.7 s.110
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• pp.1027-1038
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• 2006

There are many technical problems in the recommendation system based on very large database(VLDB). So, it is necessary to study the recommendation system' structure and the data-mining technique suitable for the large scale Internet shopping mail. Thus we design and implement the product recommendation system using k-means clustering algorithm and sequential pattern technique which can be used in large scale Internet shopping mall. This paper processes user information by batch processing, defines the various categories by hierarchical structure, and uses a sequential pattern mining technique for the search engine. For predictive modeling and experiment, we use the real data(user's interest and preference of given category) extracted from log file of the major Internet shopping mall in Korea during 30 days. And we define PRP(Predictive Recommend Precision), PRR(Predictive Recommend Recall), and PF1(Predictive Factor One-measure) for evaluation. In the result of experiments, the best recommendation time and the best learning time of our system are much as O(N) and the values of measures are very excellent.

• Journal of the Korean Data and Information Science Society
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• v.26 no.3
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• pp.763-772
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• 2015

In this paper, we develop the noninformative priors for the product of different powers of k means in the exponential distribution. We developed the first and second order matching priors. It turns out that the second order matching prior matches the alternative coverage probabilities, and is the highest posterior density matching prior. Also we revealed that the derived reference prior is the second order matching prior, and Jeffreys' prior and reference prior are the same. We showed that the proposed reference prior matches very well the target coverage probabilities in a frequentist sense through simulation study, and an example based on real data is given.

• IE interfaces
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• v.17 no.1
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• pp.56-70
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• 2004

Expanding product variety and high customer service provision place an enormous burden on demand forecasting and the matching of supply with demand in a supply chain. Postponement of product differentiation has been found to be powerful means to improve supply chain performance in the presence of increasing product variety. Delaying the point of product differentiation implies that the process would not commit the work-in-process into a particular finished product until a later point. This paper reviews the recent analytical models that quantify the value of delayed product differentiation. We conclude the literature review by summarizing and synthesizing the economic evaluation of the postponement and outline directions for future research.

• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.881-889
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• 2022

This study is to empirically investigate the impact of product placement on purchase intention. Product placement is growing due to its advantages that it is cheaper than general advertising and free from restrictions from exposure time. Considering that, this study includes variables reflecting high importance and characteristic changes in product placement. The study selects fashion involvement, celebrity involvement, bald exposure, and exposure strength as variables reflecting the unique characteristics of product placement, observance of ethics and consumer deception as ones reflecting ethical aspects, and program popularity and media familiarity as variables reflecting means of using product placement. As a result, celebrity involvement and program popularity have a positive influence on purchase intention, and consumer deception has a negative impact. However, fashion involvement, bald exposure, exposure strength, observance of ethics, and media familiarity do not have a statistically significant impact. This study explains the results through comparison with previous studies and suggests implications based on the association between product placement and purchase intention.

• Design Convergence Study
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• v.16 no.4
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• pp.81-98
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• 2017

This study starts from the judgment that the evaluation about preserved flower package design has to be performed based on the product attribute. The principles and components of package design are reestablished from preceding researches, the product type model is suggested based on the product attribute. The 6 principles of package design are usability, esthetic element, attracting attention, creativity, identity and implication, and the 5 components of package design are form, material, color, graphics and branding factors. The product types are classified into 4 areas following the 2 axises. The 1 axis means the degree of perception risk on acquiring information and the other means the approaching type to expected effects about products. The characteristics of package design components are analyzed from the cases belonged at each area on the product type model. Based on the this model, the strategy of preserved flower package design is drawn. At last the package of 'Preserville' is analyzed, we find out the critical points and suggest the intention point in planning the preserved flower package.

• Bulletin of the Korean Mathematical Society
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• v.37 no.4
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• pp.765-770
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• 2000

The object of the present paper is to give an application of a linear operator $L_p(a, c)$ defined by means of a Hadamard product (or convolution) to a Miller and Mocanu’s theorem.

• Bulletin of the Korean Mathematical Society
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• v.37 no.4
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• pp.764-764
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• 2000

The object of the present paper is to give an application of a linear operator L(sub)p(a, c) defined by means of a Hadamard product (or convolution) to a Miller and Mocanu’s theorem.

• Journal of the Korea Furniture Society
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• v.24 no.4
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• pp.318-328
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• 2013

This study aimed to examine the theoretical consideration and concept of hybrid that could be applicable to wood product design, to analyze design trend according to the morphological transformation by means of combination of hybrid material and function, to understand the correlation between type of wood product and materials and to apply it to the domestic and overseas hybrid concept of wood product design study. A study of assembling output by empirical experiment to embed natural resources into acrylic resin in order to develop wood products was carried out. And an wood product was suggested that satisfied lighting and hanger function through a new wood product design development combined with hanger function and lighting function. Through such process, a new design paradigm was suggested to cope with the periodic trend and to induce mass production of designed product. Thus, this study set a new guideline for activating wood product design and attempted to meet the social demand of encouraging new value creation.

• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.65-74
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• 2012

A barcode is a representative means of cognition. It is either printed on the package of a product or attached to it as a sticker. It is used for the fast cognition of a product at a store. It is considerably cheap to make a barcode. Also, it is possible to read it fast by using a barcode reader. Because of such convenience provided by the barcode, a new system using the barcode as a means of settling payments like a currency or a credit card has been developed. However, due to its characteristics, it is easy to reduplicate, forge or falsify a barcode easily. Therefore, this study focuses on the case of applying the system using barcodes as a means of settling payments without providing solutions for the potential weaknesses. Also, this study suggests various points to consider regarding the creation of safe barcodes as one of the related measures, while providing various methods using additional means of certification other than the one of using barcodes in addition to the way of applying complexity with barcode numbers. Throughout this study, it will be possible to safely establish and operate the payment-settlement system using barcodes.

• Kyungpook Mathematical Journal
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• v.50 no.4
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• pp.545-556
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• 2010

A good amount of work has been done on degree of approximation of functions belonging to Lip${\alpha}$, Lip($\xi$(t),r) and W($L_r,\xi(t)$) and classes using Ces$\`{a}$ro, N$\"{o}$rlund and generalised N$\"{o}$rlund single summability methods by a number of researchers ([1], [10], [8], [6], [7], [2], [3], [4], [9]). But till now, nothing seems to have been done so far to obtain the degree of approximation of functions using (N,$p_n$)(C, 1) product summability method. Therefore the purpose of present paper is to establish two quite new theorems on degree of approximation of function $f\;\in\;Lip({\alpha},r)$ class and $f\;\in\;W(L_r,\;\xi(t))$ class by (N, $p_n$)(C, 1) product summability means of its Fourier series.