A Prerecognition Model for Hot Topic Discovery Based on Microblogging Data

Table 2

Hot topic ranks with related metrics.

Topic name	Post number	Subtopic number	Topic level	Recall (%)	Precision (%)
Flight MH370	122,012	57	6	79.54	81.25
Ukraine crisis	108,927	62	7	81.32	80.45
Crimea independence	89,877	48	5	70.55	76.24
South Korea ferry	77,092	55	6	74.21	76.98
Airpocalypse	65,768	36	4	72.36	75.78
Two sessions	62,182	40	5	77.25	81.32
I am a singer	50,653	48	5	66.16	72.65
Spring Festival	43,867	50	4	80.18	75.26
Syria Civil War	39,372	39	4	72.75	80.58
Taste of China	38,892	43	5	78.02	84.80