• Title/Summary/Keyword: Specification Search by Modification Index

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Exploring Navigation Pattern and Site Evaluation Variation in a Community Website by Mixture Model at Segment Level (커뮤니티 사이트 특성과 navigation pattern 연관성의 세분시장별 이질성분석 - 믹스처모델의 구조방정식 적용을 중심으로 -)

  • Kim, So-Young;Kwak, Young-Sik;Nam, Yong-Sik
    • Journal of Global Scholars of Marketing Science
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    • v.13
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    • pp.209-229
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    • 2004
  • Although the site evaluation factors that affect the navigation pattern are well documented, the attempt to explore the difference in the relationship between navigation pattern and site evaluation factors by post hoc segmentation approach has been relatively rare. For this purpose, this study constructs the structure equation model using web-evaluation data and log file of a community site with 300,000 members. And then it applies the structure equation model to each segment. Each segment is identified by mixture model. Mixture model is to unmix the sample, to identify the segments, and to estimate the parameters of the density function underlying the observed data within each segment. The study examines the opportunity to increase GFI, using mixture model which supposes heterogeneous groups in the users, not through specification search by modification index from structure equation model. This study finds out that AGFI increases from 0.819 at total sample to 0.927, 0.930, 0.928, 0.929 for each 4 segments in the case of the community site. The results confirm that segment level approach is more effective than model modification when model is robust in terms of theoretical background. Furthermore, we can identify a heterogeneous navigation pattern and site evaluation variation in the community website at segment level.

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