VOCs have been used as the most definitive resource to reflect customer feedback when developing products and services. However, due to the development of the Internet and the emergence of SNS, VOC is no longer the only channel that represents customer opinions. There are also a number of studies showing that many customers express complaints through channels other than VOCs. In this paper, we analyze the difference between the official VOC data and the data collected through the external channel, and suggest ways to reflect the various opinions of customers. To do this, this study uses keyword analysis that can identify differences according to frequency through social network, modular analysis to distinguish topics according to centrality and similarity, and emotional analysis to confirm word polarity (positive and negative). The results of this study show that the opinions of the customers were different depending on channels such as VOCs and external channels. Therefore, the collected data through VOC as well as external channels should be used in order to reflect the opinions of customers. In particular, this paper confirms that the results of one channel may vary depending on the channel characteristics even for the same channel. This confirms that collecting voc only on certain channels may differ from what real customers require. Therefore, data collected through VOCs as well as external channels must be used to reflect various customer feedback.

1. 서 론
 2. 선행연구와 이론적 배경
  2.1 VOC
  2.2 사회연결망 분석(Social Network Analysis)
  2.2 모듈성 분석(Modularity Analysis)
  2.3 감성 분석(Sentiment Analysis)
 3. 분석 방법
 4. 사례 분석
  4.1 분석방향 설정
  4.2 자료수집
  4.3 키워드 분석
   4.3.1 제주관광신문고
   4.3.2 웹 스크래핑
  4.4 모듈성 분석
   4.4.1 제주관광신문고
   4.4.2 웹 스크래핑
  4.5 감성 분석
   4.5.1 제주관광신문고
   4.5.2 웹 스크래핑
  4.6 분석결과 비교
 5. 결 론
 Acknowledgement
 References

• Sang Hyeon Ahn(Korea Productivity Center, 한국생산성본부) | 안상현
• Dong Hyun Baek(Department of Business Administration, Hanyang University ERICA, 한양대학교 경상대학 경영학부) | 백동현 Corresponding Author