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Table 3 Search tag and queries issued per user

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

Number of consecutive queries Number of users Total number of users
Number of total distinct tags in the queries
= 0 = 1 = 2 = 3 to 14
1 193,935 54,930 9,002 7,758 265,625
2 64,502 12,461 764 1,809 79,536
3 45,023 7,869 561 1,212 54,665
4 31,945 6,016 394 895 39,250
5 24,128 4,634 360 709 29,831
6 18,248 3,898 312 609 23,067
7 14,210 3,267 254 493 18,224
8 11,348 2,703 251 484 14,786
9 9,053 2,295 200 447 11,995
10 7,548 1,966 154 371 10,039
11 to 50 42,741 15,608 1,526 3,394 63,269
Total (%) 462,681 115,647 13,778 18,181 610,287
(75.81%) (18.95%) (2.26%) (2.987%) (100%)
  1. This table presents the total number of users using a different number of total distinct tags issuing a different number of queries.