题目
Which visualization tool works best to represent unstructured, textual data?
选项
A.Tree-Map
B.Scatter plot
C.Word cloud
答案
C
解析
C is correct. A word cloud, or tag cloud, is a visual device for representing unstructured, textual data. It consists of words extracted from text with the size of each word being proportional to the frequency with which it appears in the given text. A is incorrect because a tree-map is a graphical tool for displaying and comparing categorical data, not for visualizing unstructured, textual data. B is incorrect because a scatter plot is used to visualize the joint variation in two numerical variables, not for visualizing unstructured, textual data. C是不正确的，词云，用于展示非结构化文本数据。它由从文本中提取的单词组成，每个单词的大小与它在给定文本中出现的频率成比例，即字体越大，该词语的出现次数越多，词频越高。A是不正确的，树图是用于显示和比较分类数据的图形工具。B是不正确的，散点图用于反映可视化两个数值变量的联合变化。