DATA-DRIVEN APPROACH FOR QUALITY EVALUATION ON KNOWLEDGE SHARING PLATFORM
Table 3: Influence of badges on Zhihu Live scores.
['Badges_Num', 'Speakers_Num', 'Avg_Score', 'Median_Score']
Badge in Zhihu represents identity authentication of public figures and high-quality answerers. Only those who hold a Ph.D. degree or experts in a specific domain can be granted a badge. Hence, these speakers tend to host high-quality Zhihu Lives theoretically. 1475 speakers hold 1 badge, and 446 speakers hold 2 badges, respectively. The average score of Zhihu Lives given by two badges holders is slightly higher than others. We can conclude that whether the speaker holds badges does have slightly influence on the Zhihu Live quality ratings, which is consistent with our supposition.