Research on the Key Technology of Web Data Extraction and Mining Based on the Probability Distribution

Table 2

Experimental results of the second group.

The domain name	The number of words
	Title	Author	Date	Affiliation
Correct-marked words	1705	1182	164	1356
Words in data set	1816	1425	175	1518
Words in extracted result set	1907	1242	232	1609
REC	0.938877	0.829473	0.937143	0.893281
PRE	0.894074	0.951690	0.706897	0.842759