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Popularity prediction of video content and clustering using networks : 영상 콘텐츠에 대한 인기도 예측 및 네트워크를 활용한 군집화: 영화, TV 프로그램, 유튜브 채널
Movies, TV programs and Youtube channels

DC Field Value Language
dc.contributor.advisor조성준-
dc.contributor.author안용대-
dc.date.accessioned2022-04-20T07:47:00Z-
dc.date.available2022-04-20T07:47:00Z-
dc.date.issued2021-
dc.identifier.other000000167291-
dc.identifier.urihttps://hdl.handle.net/10371/178875-
dc.identifier.urihttps://dcollection.snu.ac.kr/common/orgView/000000167291ko_KR
dc.description학위논문(박사) -- 서울대학교대학원 : 공과대학 산업공학과, 2021.8. 조성준.-
dc.description.abstractThe content market, including video content market, is a high-risk, high-return industry. Because the cost of copying and distributing the created video content is very low, large profit can be generated upon success. However, as content is an experience good, its quality cannot be judged before purchase. Hence, marketing has an important role in the content market because of the asymmetry of information between suppliers and consumers. Additionally, it has the characteristics of One Source Multi Use; if it is successful, additional profits can be created through various channels. Therefore, it is important for the content industry to correctly distinguish content with a high probability of success from the one without it and to conduct effective marketing activities to familiarize consumers with the product. Herein, we propose a methodology to assist in data-based decision-making using machine learning models and help in identifying problematic issues in video content markets such as movies, TV programs, and over-the-top (OTT) market.
In the film market, although marketing is very important, decisions are still made based on the sense of practitioners. We used the market research data collected through online and offline surveys to learn a model that can predict the number of audiences on the opening-week Saturday, and then use the learned model to propose a method for effective marketing activities. In the TV program market, programming is performed to improve the overall viewership by matching TV programs and viewer groups well. We learn a model that predicts the audience rating of a program using the characteristics of the program and the audience-rating information of the programs before, after, and at the same time, and use the resulting data to assist in decision-making to find the optimal programming scenario. The OTT market is facing a new problem of user's perception bias caused by the recent recommendation system. In the fields of politics and news particularly, if the user does not have access to different viewpoints because of the recommendation service, it may create and/or deepen a bias toward a specific political view without the user being aware of it. In order to compensate for this, it is important to use the recommended channel while the user is well aware of what kind of channel it is. We built a channel network in the news/political field using the data extracted from the comments left by users on the videos of each channel. In addition, we propose a method to compensate for the bias by classifying networks into conservative and progressive channel clusters and presenting the topography of the political tendencies of YouTube channels.
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dc.description.tableofcontents1 Introduction 1
2 Prediction of Movie Audience on First Saturday with Decision Trees 5
2.1 Background 5
2.2 Related work 9
2.3 Predictive model construction 15
2.3.1 Data 15
2.3.2 Target variable 17
2.3.3 Predictor variable 19
2.3.4 Decision Tree and ensemble prediction models 28
2.4 Prediction model evaluation 29
2.5 Summary 37
3 Prediction of TV program ratings with Decision Trees 40
3.1 Background 40
3.2 Related work 42
3.2.1 Research on the ratings themselves 42
3.2.2 Research on broadcasting programming 44
3.3 Predictive model construction 45
3.3.1 Target variable 45
3.3.2 Predictor variable 46
3.3.3 Prediction Model 48
3.4 Prediction model evaluation 50
3.4.1 Data 50
3.4.2 Experimental results 51
3.5 Optimization strategy using the predictive model 54
3.5.1 Broadcasting programming change process 56
3.5.2 Case Study 57
3.6 Summary 60
4 Relation detection of YouTube channels 62
4.1 Background 62
4.2 Related work 65
4.3 Method 67
4.3.1 Channel representation 68
4.3.2 Channel clustering with large k and merging clusters by keywords 71
4.3.3 Relabeling with RWR 73
4.3.4 Isolation score 74
4.4 Result 74
4.4.1 Channel representation 74
4.4.2 Channel clustering with large k and merging clusters by keywords 76
4.4.3 Relabeling with RWR 77
4.4.4 Isolation score 79
4.5 Discussion 80
4.5.1 On the Representativeness of the Channel Preferences of the Users from Their Comments 80
4.5.2 On Relabeling with RWR 82
4.6 Summary 83
5 Conclusion 85
5.1 Contribution 85
5.2 Future Direction 87
Bibliography 91
국문초록 110
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dc.format.extentviii, 110-
dc.language.isoeng-
dc.publisher서울대학교 대학원-
dc.subject데이터마이닝(data mining)-
dc.subject기계학습(machine learning)-
dc.subject인공지능(artificial intelligence)-
dc.subject의사결정 지원 시스템(decision support system)-
dc.subject추천 시스템(recommendation system)-
dc.subject마케팅(marketing)-
dc.subject예측(prediction)-
dc.subject군집화(clustering)-
dc.subject박스오피스(Box-office)-
dc.subject시청률(ratings)-
dc.subject방송 편성(broadcasting programming)-
dc.subject유튜브(youtube)-
dc.subject채널 네트워크(channel network)-
dc.subject키워드 추출(keyword extraction)-
dc.subject필터 버블(filter bubble)-
dc.subject개인화(personalization)-
dc.subject.ddc670.42-
dc.titlePopularity prediction of video content and clustering using networks-
dc.title.alternative영상 콘텐츠에 대한 인기도 예측 및 네트워크를 활용한 군집화: 영화, TV 프로그램, 유튜브 채널-
dc.typeThesis-
dc.typeDissertation-
dc.contributor.AlternativeAuthorAn, Yongdae-
dc.contributor.department공과대학 산업공학과-
dc.description.degree박사-
dc.date.awarded2021-08-
dc.title.subtitleMovies, TV programs and Youtube channels-
dc.identifier.uciI804:11032-000000167291-
dc.identifier.holdings000000000046▲000000000053▲000000167291▲-
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