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Table 4 Number of queries containing distinct number of tags

From: A Study on Pubmed Search Tag Usage Pattern: Association Rule Mining of a Full-day Pubmed Query Log

Number of distinct tags Number of queries Relative frequency (%)
0 2,585,183 88.61989
1 245,838 8.42731
2 34,731 1.19058
3 27,766 0.95182
4 16,320 0.55945
5 5,157 0.17678
6 1,956 0.06705
7 195 0.00668
8 10 0.00034
9 2 0.00007
10 0 0.00000
11 1 0.00003
  1. This table presents the total number of queries (and its relative frequency) containing a different number of distinct tags. The maximum number of distinct tags appear in a query is 11.