• Journal of Korean Society of Industrial and Systems Engineering
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• v.27 no.3
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• pp.21-25
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• 2004

In today's mass production/consumption society, there are many important constituents people need to have/do for their happy life. Very few People think that among those components enjoying Pro-sports in their life is essential, and Many business companies are interested in owning/operating pro-sports teams. Thus, many studies have been progressed on sports management or sports marketing domestically and abroad. This paper studied the preference relationship between subject's majors and products/service and pro-sports. We constructed hypotheses about the relationship and tested them by using ANOVA and Tuckey tests. We found significant results that preference for coke/cider is influenced by subject's majors, and that preference for pro-baseball, pro-football, and pro-basketball is also influenced by subject's major, etc. As the results, we can have important information about who are the most important customers and who should be target customers for marketing and promotion, and with the information related business companies can attain higher profitability and less loss through more effective sports marketing.

• Journal of the Korean Data and Information Science Society
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• v.25 no.2
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• pp.349-356
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• 2014

In baseball, sabermetric batting statistics are used to compare an offensive performance of players. There exist dozens of sabermetric statistics, but baseball fans don't like the complexity of an abundance of measures. This paper provides a batting grade index (BGI) using principal component based on eight batting statistics. These are OPS, ISO, SECA, TA, RC, RC/27, wOBA and XR. We show that how standardized batting statistics are aggregated and weighted to arrive at a single composite measure of BGI. Also our result allows for segmentation of players into groups using the K-means clustering algorithm.

• Journal of the Korean Data and Information Science Society
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• v.25 no.3
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• pp.485-492
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• 2014

In baseball, the traditional measure of pitchers are wins and ERA. But these statistics are influenced by luck or team power. So sabermetrician proposes a number of indicators that predict future performance. We determine a new measure, which we call pitching grade index (PGI) that efficiently summarizes a pitcher's performance on a numerical scale using principal components analysis. The PGI statistic can often be useful to assessing a pitcher's individual contribution. Also K-means clustering algorithm are used for segmentation of players into groups.

• Journal of the Korean Data and Information Science Society
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• v.27 no.3
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• pp.621-627
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• 2016

A certain professional baseball team tends to be very weak against another particular team. For example, S team, the strongest team in Korea, is relatively weak to H team. In this paper, we carried out clustering the Korean baseball teams based on the records against the team S to investigate whether the pattern of the record of the team H is different from those of the other teams. The technique we have employed is 'time series clustering', or more specifically 'categorical time series clustering'. Three methods have been considered in this paper: (i) distance based method, (ii) genetic sequencing method and (iii) periodogram method. Each method has its own advantages and disadvantages to handle categorical time series, so that it is recommended to draw conclusion by considering the results from the above three methods altogether in a comprehensive manner.

• Journal of Korea Entertainment Industry Association
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• v.13 no.7
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• pp.261-272
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• 2019

The purpose of this study is to examine the moderating effect of emotional bond in the effect of the congruence of self-image and the team's loyalty to professional baseball spectators, to enhance the effectiveness of emotional bond between the club and the spectator, and to suggest implications for establishing the club's brand marketing strategy. For this purpose, a survey was conducted on 500 professional baseball spectators, and the results of correlation analysis, stepwise regression analysis and hierarchical regression analysis using SPSS 21.0 based on 450 collected data are as follows. First, among the professional baseball spectators and the team's self-image, the realistic self-image factor had a significant effect on the club's loyalty. Second, it was confirmed that the congruence of realistic self-image moderated the effect of congruence of realistic self-image on club loyalty. This result shows that the formation of emotional bond has no influence on the congruence of ideal self-image and is related to the realistic self-image that the club is showing at present. Therefore, it is necessary to establish a marketing strategy that can highlight this effect by considering these points.

• Journal of Korea Entertainment Industry Association
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• v.14 no.6
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• pp.139-150
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• 2020

The data processing of this study focuses on the textom and social media words about three areas: 'Corona 19 and professional baseball', 'Corona 19 and professional baseball', and 'Corona 19 and professional sports' The data was collected and refined in a web environment and then processed in batch, and the Ucinet6 program was used to visualize it. Specifically, the web environment was collected using Naver, Daum, and Google's channels, and was summarized into 30 words through expert meetings among the extracted words and used in the final study. 30 extracted words were visualized through a matrix, and a CONCOR analysis was performed to identify clusters of similarity and commonality of words. As a result of analysis, the clusters related to Corona 19 and Pro Baseball were composed of one central cluster and five peripheral clusters, and it was found that the contents related to the opening of professional baseball according to the corona 19 wave were mainly searched. The cluster related to Corona 19 and unrelated to professional baseball consisted of one central cluster and five peripheral clusters, and it was found that the keyword of the position of professional baseball related to the professional baseball game according to Corona 19 was mainly searched. Corona 19 and the cluster related to professional sports consisted of one central cluster and five peripheral clusters, and it was found that the keywords related to the start of professional sports according to the aftermath of Corona 19 were mainly searched.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.25 no.3
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• pp.16-27
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• 2002

This paper is mainly interested in customer's(fan's) royalty to professional sports in sports industry. The royalty is studied with the royalty to several products and a service, so that we can obtain the comparison between both the former and the latter royalty. Interested professional sports, products and service are baseball, basketball, soccer, beer, cu, cola/cider, etc, and we will call each of them 'item'. The seven related hypotheses are considered. In hypotheses the dependent variable is royalty to nine items, and the independent variables are rune items, and customer's sex and major. For testing hypotheses, a questionaire is used, and reliability is checked with Cronbach's Alpha and correlation coefficients. For some items the royalty is significantly strong. Rather, even if some item has bad quality, it is found that customers can be royal to that item. We can identify some of those items through the results of this study. The strong significant results will be useful for the customer management. Additional studies are required for nonsignificant results which seems to be useful, and they are noted in the final part of the paper.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.26 no.4
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• pp.6-11
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• 2003

이 논문에서 우리는 어떤 종류의 사람이 프로야구팀을 가진 기업에 충성하며, 프로팀에 충성하는 지를 연구했다. 충성심은 몇 개의 변수로 측정이 되며, 몇 개의 변수들은 또 그 하위변수로 측정이 된다. 종속변수는 충성심, 독립변수는 고객의 연령, 성별, 고향이다. 우리는 기존 연구를 보다 심화하여, 독립변수의 2차원적 효과를 연구했다. 그 사용하는 방법은 분산분석 등이며, 여섯 가지 유의적인 결과를 발견했다. 그 결과 우리는 충성스런 고객과 그렇지 않은 고객을 확인했으며, 보다 더 세분화된 고객 분석으로부터 보다 효율적인 고객경영이 가능하게 될 수 있다는 점이 이 연구의 잇점이라고 할 수 있다.

• The Journal of the Korea Contents Association
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• v.8 no.7
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• pp.216-223
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• 2008

The purpose of this study was to examine the effects of the satisfaction and absorption of spectating on desire of re-spectating at the professional sporting events. This study set a model of consumer behavior decision based on the results of the precedent studies about the determinative factors of consumer behavior and the hypothetical model done by Wakefield ＆ Sloan(1995), Hansen ＆ Gauthier(1989), Jeffrey(1997), Green(1995), and Kim(1999) and clarified it through the regression. To attain the goal of the study described above paragraphs, some viewers of 2007 season pro-soccer and pro-baseball games were set as a collected group. Then, using the stratified cluster random sampling method, finally drew out and analyzed 605 spectators in total. Data collected through a questionnaire designed for this study consist of fixed alternative choice response to items constructed to represent the operational definition for each variable. Statistics employed for data analysis was correlation and multiple regression. Based upon the results of the study, the following conclusions appear warranted: 1. Satisfaction of spectating influence on desire of re-spectating at the professional sporting events. 2. Satisfaction of absorption influence on desire of re-spectating at the professional sporting events.

• Journal of the Korean Data and Information Science Society
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• v.25 no.3
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• pp.493-499
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• 2014

The Pythagorean won-loss formula postulated by James (1980) indicates the percentage of games as a function of runs scored and runs allowed. Several hundred articles have explored variations which improve RMSE by original formula and their fit to empirical data. This paper considers a variation on the formula which allows for variation of the Pythagorean exponent. We provide the most suitable optimal exponent in the Pythagorean method. We compare it with other methods, such as the Pythagenport by Davenport and Woolner, and the Pythagenpat by Smyth and Patriot. Finally, our results suggest that proposed method is superior to other tractable alternatives under criterion of RMSE.