Model + dual-side loyal users

Model + dual-side loyal users, through Mathematica. Adding for our group research Platform Multi-homing Pricing Strategy - Analysis based on the Existence of Loyal Users+Group 3+Yan Xintong, Zuo Yuewen, Wang Xinyi, Xu Yige, Chen Jiajun.本数据集基于Mathematica构建了双边忠诚用户（dual-side loyal users）模型，相关内容服务于本团队的研究课题《平台多归属定价策略（Platform Multi-homing Pricing Strategy）——基于忠诚用户存在性（Existence of Loyal Users）的分析》，该研究由第3小组的闫欣桐、左越文、王馨怡、徐一歌、陈家骏完成。