# Sports Information Needs in Chinese Online Q&A Community: Topic Mining Based on BERT
## 4 Results and Analysis
### Contents of Information Needs
#### 4.3.3 Characteristics of Sports Information Needs of Users with Different Authentication Attributes  
From the perspective of different authentication attributes (Authenticated, non-authenticated, and anonymous users), sports events and sports skills are the essential information content for all three types of users. For authenticated users, sports events, professional athletes and teams, and Chinese sports and sports education all account for higher demand than non-authenticated and anonymous users. At the same time, sports experience is the only topic that is more popular among anonymous users than authenticated and non-authenticated users (Table 4).  
Of the top five secondary topics (Table 5), authenticated users are most concerned with the topic of Chinese Super League and Korea-Japan World Cup, non-authenticated users are most concerned with sports slimming, and anonymous users are most concerned with NBA players' performance. In addition, among the top five secondary topics, NBA  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Primary Subject Categories** & **Authenticated** & **Unauthenticated** & **Anonymous** \\  & **User** & **User** & **User** \\ \hline Sports events & 30.59\% & 22.77\% & 25.31\% \\ Sports skills & 21.68\% & 22.41\% & 20.59\% \\ Professional athletes and teams & 19.13\% & 12.72\% & 17.45\% \\ Sports and Physical Education in China & 9.80\% & 8.67\% & 7.21\% \\ Sports shaping and weight loss & 7.12\% & 14.89\% & 14.29\% \\ Sports health & 4.63\% & 8.07\% & 6.64\% \\ Sports equipment & 4.57\% & 7.68\% & 5.59\% \\ Sports experience & 2.48\% & 2.78\% & 2.91\% \\ \hline \hline \end{tabular}
\end{table}
Table 4: Sports information needs with different authentication attributes of primary subject categories.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Ranking** & **Secondary Subject Category of Male** & **Ratio** & **Secondary Subject Category of Female** & **Ratio** \\ \hline
1 & NBA player performance & 5.53\% & Exercise to lose weight & 7.30\% \\
2 & UEFA & 5.17\% & Sports protection and rehabilitation & 5.86\% \\
3 & NBA teams & 5.13\% & Middle-distance running and Marathon \\
4 & Personal football training and planning & 4.28\% & Fitness consultation & 4.93\% \\
5 & Chinese Football and World Cup & 4.07\% & Physical education and examination & 3.99\% \\
6 & Bicycle and hiking & 3.81\% & Grow taller through exercise & 3.84\% \\
7 & NBA events & 3.75\% & Fitness and body training & 3.72\% \\
8 & Combat and Wushu learning & 3.67\% & Swimming learning & 3.67\% \\
9 & Basketball skills and tactics & 3.37\% & Sports fun and experience sharing & 3.58\% \\
10 & Chinese Super League and Korea-Japan World Cup & 3.27\% & Running to lose weight & 3.51\% \\ \hline \hline \end{tabular}
\end{table}
Table 3: Sports information needs by gender of secondary subject categories (Top 10).  
team and Olympic Games discussions are unique to authenticated users compared to non-authenticated and anonymous users. The topics of fitness consultation, middle distance running, and marathon performance improvement are special to non-authenticated users, and Esports tips are individual to anonymous users.