Supplementary Material for: A Comparative Study of Item Space Visualizations for Recommender Systems

This is the supplementary material for the article “A Comparative Study of Item Space Visualizations for Recommender Systems” as submitted to the International Journal of Human-Computer Studies.本材料为提交至《国际人机交互研究期刊》的论文《面向推荐系统的物品空间可视化方法对比研究》的补充材料。