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%) | |