Table 1.
Summary of results of the analysis of seven scientific collaboration networks
| MEDLINE | Los Alamos e-Print
Archive
|
SPIRES | NCSTRL | ||||
|---|---|---|---|---|---|---|---|
| Complete | astro-ph | cond-mat | hep-th | ||||
| Total papers | 2,163,923 | 98,502 | 22,029 | 22,016 | 19,085 | 66,652 | 13,169 |
| Total authors | 1,520,251 | 52,909 | 16,706 | 16,726 | 8,361 | 56,627 | 11,994 |
| First initial only | 1,090,584 | 45,685 | 14,303 | 15,451 | 7,676 | 47,445 | 10,998 |
| Mean papers per author | 6.4 (6) | 5.1 (2) | 4.8 (2) | 3.65 (7) | 4.8 (1) | 11.6 (5) | 2.55 (5) |
| Mean authors per paper | 3.754 (2) | 2.530 (7) | 3.35 (2) | 2.66 (1) | 1.99 (1) | 8.96 (18) | 2.22 (1) |
| Collaborators per author | 18.1 (1.3) | 9.7 (2) | 15.1 (3) | 5.86 (9) | 3.87 (5) | 173 (6) | 3.59 (5) |
| Cutoff zc | 5,800 (1,800) | 52.9 (4.7) | 49.0 (4.3) | 15.7 (2.4) | 9.4 (1.3) | 1,200 (300) | 10.7 (1.6) |
| Exponent τ | 2.5 (1) | 1.3 (1) | 0.91 (10) | 1.1 (2) | 1.1 (2) | 1.03 (7) | 1.3 (2) |
| Size of giant component | 1,395,693 | 44,337 | 14,845 | 13,861 | 5,835 | 49,002 | 6,396 |
| First initial only | 1,019,418 | 39,709 | 12,874 | 13,324 | 5,593 | 43,089 | 6,706 |
| As a percentage | 92.6 (4)% | 85.4 (8)% | 89.4 (3) | 84.6 (8)% | 71.4 (8)% | 88.7 (1.1)% | 57.2 (1.9)% |
| Second largest component | 49 | 18 | 19 | 16 | 24 | 69 | 42 |
| Mean distance | 4.6 (2) | 5.9 (2) | 4.66 (7) | 6.4 (1) | 6.91 (6) | 4.0 (1) | 9.7 (4) |
| Maximum distance | 24 | 20 | 14 | 18 | 19 | 19 | 31 |
| Clustering coefficient C | 0.066 (7) | 0.43 (1) | 0.414 (6) | 0.348 (6) | 0.327 (2) | 0.726 (8) | 0.496 (6) |
Numbers in parentheses are standard errors on the least significant figures.