변수선택 기법을 이용한 한국 프로야구의 득점과 실점설명

김예형,김혁주 통계청 2015 통계연구 Vol.20 No.3

We studied on factors which affect runs scored and runs lost of teams in Korean professional baseball. We analyzed the data from all games in the regular seasons from 2007 to 2014. Using variable selection techniques such as forward selection, backward elimination, stepwise regression,   selection, adjusted   selection and Mallows'   selection, we recommended four regression models for explaining average runs scored and three regression models for explaining average runs lost. We also obtained the resultant least squares regression equations. All the coefficients of determination of the recommended models for explaining runs scored was over 98%, and all those of the recommended models for explaining runs lost was over 93%. 한 국 프로야구에서 팀들의 득점과 실점에 영향을 미치는 요인들을 규명하기 위 한 연구를 하였다. 2007년부터 2014년까지의 정규리그 전 경기 자료를 대상으로 분석하였다. 전방선택법, 후방소거법, 단계별 회귀법,   선택법, 보정된   선택법, Mallows의   선택법 등의 변수선택 기법을 이용하여 팀들의 경기당 평균득점을 설명하기 위한 4개의 회귀모형과 평균실점을 설명하기위 한 3개 의 회귀모형을 추천하고 최소제곱법에 의 한 회귀방정식을 구하였다. 그 결 과 추천된 모형들은 득점 설명의 경우 공히 98%를 넘는 결정계수를 보였으며, 실점 설명의 경우도 공히 93% 를 넘 는 높 은 결정계수를 보였다.

현대 패션의 미래적 이미지에 관한 연구

김예형(Ye Hyung Kim),조정미(Jung Mee Cho) 한국복식학회 2003 服飾 Vol.53 No.1

The primary goal of this study is to define the future image of modern fashion. By review of many references, this study has examined predictable future in common, various researches on future, and futurism that appeared from art history. This study has also identified the trend of future image and the properties of the image in terms of fashion as well. The purpose of this study is defined as future image of modern fashion. First of all, through a large literature, this study is to examine general future and the study of future, to investigate futurism appears from art history, and to identify the trend of future image and the properties of the image in terms of fashion. The main results of this study include: 1) General future means forthcoming sometime or a state of life at that time, and future is not drawing near naturally in accordance with the passage of time. The future is developed according as which the owners of time have independent meaning and what they select. 2) The futurism had started with the background based on Darwins and Einsteins scientific theories and Bergsons and Nietzsche philosophical thoughts, which was then established by Marienttis Futurism Statement and Dynamism Theory of Umberto Boccionio, Giaomo Balla, Luigi Russolo and Gino Severini. As the purpose of futurism is to represent the dynamism of machinery and the beauty of speed, it has been developed toward op art and kinetic art including video art, laser art, and holography. 3) Fashion style and trend of futurism from the beginning of 20th century up to now can be defined as follows: Firstly futurism fashion represented by loud colors and geometric pattern appeared from 1910s to 1930s in the first place. Secondly, op art fashion and kinetic fashion appeared in 1960s due to the influence of op art and kinetic art which were developmental arts of futurism paintings. Space Look and Cosmo Corps Look that were designed by Andre Courreges, Pierre Cardin, Rudi Gernreich and Paco Rabanne, were also the trend of future image fashion. Thirdly, various materials and techniques developed this future image fashion in 1980s, and Glitter Look and Collage Look were its representative style. Fourthly, in 1990s, human beings dreamed the freedom of mind by human-oriented thought, and created the ecology of new concept mixed with technology due to anxiety on environmental destruction, which influenced on the advent of Zen style.

결합된 수비지표들을 이용한 한국 프로야구의 실점 설명

김혁주,김예형,Kim, Hyuk Joo,Kim, Yea Hyoung 한국통계학회 2015 응용통계연구 Vol.28 No.5

한국 프로야구에서 팀들의 실점을 설명하기 위한 지표를 연구하였다. Kim과 Kim (2014)이 팀들의 득점력을 설명하기 위한 공격지표를 연구한 것과 유사하게 본 논문에서는 팀들의 실점을 설명하기 위한 수비지표를 연구하였다. 여러 가지의 수비지표 중 팀의 실점과 관련이 큰 것들을 결합하여 만든 몇 가지의 결합지표들을 고려하였다. 프로야구 원년인 1982년부터 2014년까지의 정규리그 전 경기 자료를 분석한 결과 WHIP와 경기당피홈런의 가중평균으로 정의되는 가중WPH가 실점을 가장 잘 설명해줬다. 구체적으로 WHIP에 81%, 경기당피홈런에 19%의 가중값을 주는 가중WPH가 팀의 평균실점과 0.95033의 상관계수를 갖는 최적의 가중WPH인 것으로 나타났다. 시대별 분석에서도 크게 다르지 않은 결과를 얻었다. We studied indices to explain runs lost for Korean professional baseball teams. Kim and Kim (2014) studied batting indices to explain run productivity of teams; subsequently, we studied fielding indices to explain runs lost. We considered several combined indices made by combining fielding indices closely connected with the runs lost of teams. Data analysis from all games in the regular seasons of 1982~2014 show that weighted WPH (defined as weighted average of WHIP and number of home runs allowed per game) best explain runs lost. Weighted WPH consisting of WHIP (with weight 81%) and number of home runs allowed per game (with weight 19%) was found optimal weighted WPH having correlation coefficient 0.95033 with average runs lost per game. Analysis by chronological periods gave results not much different.

한국 프로야구에서 가중수정OPS를 이용한 득점력 설명

김혁주,김예형,Kim, Hyuk Joo,Kim, Yea Hyoung 한국통계학회 2014 응용통계연구 Vol.27 No.5

We suggested an adjusted OPS and weighted adjusted OPS as indices to explain run productivity of teams using the slugging average and adjusted OBP from Korean professional baseball. First, we defined adjusted OBP by modifying currently used OBP. Next, we defined adjusted OPS as the sum of adjusted OBP and slugging average. We also defined weighted adjusted OPS as the weighted average of adjusted OBP and slugging average. Analysis of the data from all games in the regular seasons from 1982~2013 shows that adjusted OPS better explains runs than OPS. For 25 seasons out of 32 seasons, adjusted OPS explains runs better than OPS. Further, weighted adjusted OPS consisting of adjusted OBP (with weight 60%) and slugging average (with weight 40%) gives the best explanation of run productivity. Weighted adjusted OPS has been found to explain run productivity better than weighted OPS proposed in Kim (2012). 한국 프로야구에서 장타율과 수정된 출루율을 이용하여 팀의 득점력을 설명하기 위한 지표인 수정OPS와 가중수정OPS를 제시하였다. 먼저 현재 사용되고 있는 출루율을 수정한 수정출루율을 정의하였으며, 수정OPS를 수정출루율과 장타율의 합으로, 가중수정OPS를 수정출루율과 장타율의 가중평균으로 정의하였다. 한국 프로야구 원년인 1982년부터 2013년까지의 정규리그 전 경기 자료를 분석한 결과 수정OPS는 기존의 OPS보다 득점력을 더 잘 설명해 줬다. 연도별 비교에서도 전체 32개 시즌 중 25개의 시즌에서 수정OPS가 기존의 OPS보다 득점력을 더 잘 설명했다. 32개 시즌의 자료를 종합한 결과 수정출루율에 60%, 장타율에 40%의 가중값을 주는 가중수정OPS가 팀의 득점력을 가장 잘 설명하는 타격지표인 것으로 밝혀졌다. 이 가중수정OPS는 Kim (2012)에서 제시된 가중OPS보다도 더욱 높은 설명력을 갖는 것으로 밝혀졌다.

현대 패션에 나타난 젠(ZEN:禪) 사상에 관한 연구

조정미,김예형 한국복식학회 2000 춘계 학술대회 Vol.2000 No.-

현대 패션에 나타난 젠 (Zen : 선 (禪)) 양식에 관한 연구

조정미(Jung Mi Cho),김예형(Ye Hyung Kim) 한국복식학회 2000 服飾 Vol.50 No.6

This study focuses on the Zen style in contemporary fashion which presents itself as one of the dominant cultural phenomena these days. After investigating the basic concepts and features of the Zen style and examining its birth and development, this study moves on to the ways in which it is characteristically applied for the world of fashion. This study is also performed both by the theoretical research on related books and papers for the explication of main concepts and by the practical research on fashion magazines and works of famous fashion designers for the presentation of more detailed illustration. When we are talking about postmodernism, which is a reaction against or a continuation of modernism, as a cultural dominant shown up in the late twentieth century, the Zen style itself can be regarded as a typical representation of postmodernism in fashion. Although the Zen style can be viewed as sharing the basic principles with minimalism which is a main branch of modernism, it is strongly in line with postmodernism (which is human-centered) in that its fundamental idea is based on emotions and feelings of human beings and the purity of natural world. As above, ZEN is a crossover phenomenon between postmodernism and modernism. In this sense, it is said that within the name of postmodernism the Zen style has satisfied our desire to present our inner world of mind with the help of regional philosophy (in this case Oriental one). The four main aspects of the Zen style in fashion are following: implicity connected with the Oriental moderation, the use of the Oriental silhouette and detail, the destruction of form, and the nature-friendly attitude, These will be under close examination in this study.

무브멍트

최용재(Yongjae Choi),이도은(Doeun Lee),김예형(Yehyeong Kim),황인경(Chris I. Whang) 한국HCI학회 2022 한국HCI학회 학술대회 Vol.2022 No.2

무브멍트는 바쁘게 살아가는 현대인에게 멍의 필요성과 다양한 멍때리기 방법을 소개하며 더 많은 사람들이 멍을 때릴 수 있도록 계멍운동을 펼치는 단체입니다. 8 멍 캐릭터가 모인 스토리 영상과 웹사이트를 통해 멍때리기에 대해 인지하고, 멍 유형 테스트로 무브멍트에 참여하여, AR 필터를 활용한 사진을 SNS 에 공유하며 계멍운동을 확산합니다.