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STATISTICS FOR THE ROUGH SET DATABASE SYSTEM

The data record for a given five-year period
Year of completion1981-19851981-19901981-19951981-20001981-20051981-20101981-20151981-2020
Number of publications1928823674843416017279643729537376
Number of authors19710474177899417143304914180841981
The average publications/author1.941.842.082.32.472.652.722.72
Standard deviation publication/author2.352.473.314.455.546.226.526.5
The average authors/publication1.992.182.372.462.642.893.053.05
Standard deviation authors/publication1.061.241.551.461.611.661.751.75
Percentage share of publications with n coauthors
n=038.02%31.86%24.63%21.59%17.77%13.62%11.69%11.7%
n=134.38%34.24%36.66%35.83%32.73%29.58%27.19%27.19%
n=219.79%21.77%22.81%24.06%26.7%28.48%28.39%28.41%
n>27.29%11.22%14.32%16.88%21.1%27.01%31.57%31.53%
Number of authors sharing common publications1739583937863516722299974126341427
Their percentage share87.82%91.5%94.25%96.01%97.54%98.38%98.7%98.68%
The average: coauthors/author1.571.571.862.12.32.522.622.61
The average: coauthors/author sharing a common publication 1.79 1.72 1.98 2.19 2.36 2.56 2.65 2.65