计算机科学 ›› 2019, Vol. 46 ›› Issue (10): 14-18.doi: 10.11896/jsjkx.190100087
易小群, 李天瑞, 陈超
YI Xiao-qun, LI Tian-rui, CHEN Chao
摘要： 旭日图是一种现代饼图,它超越传统的饼图和环图,不仅能表达数据的占比问题,更能表达清晰的层级和归属关系,以父子层次结构来显示数据的构成情况。使用传统的旭日图对文本数据进行可视化时,不能全面地展示实体关系和情感偏向,而且旭日图层数越多,信息的可读性就越低。针对以上问题,对传统的旭日图进行了改进。首先,设计同级相邻圆弧的交叠,展示文本中实体的关系。然后,将旭日图与柱形图相结合,展示评论文本的感情偏向,柱形图体现为圆弧的涂色宽度,表示对于某方面评论的满意度。最后,对数据进行优化重排,包括:1)基于整体的考虑,将凸出部分放在邻接位置以节省空间;2)对局部的数据优化进行重排,使得最外层的节点尽可能高低错落,以提高稀疏性,便于观察。实验结果表明:改进的旭日图能够更全面、清晰地对评论文本进行可视化,为用户提供更灵活、个性化的可视化展示。
中图分类号:
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