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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 publications1968933704849016097281563780838529
Number of authors19810494192901817188306174211542855
The average publications/author1.951.852.092.312.472.652.742.75
Standard deviation publication/author2.342.523.364.515.616.316.676.81
The average authors/publication1.972.172.362.452.642.883.053.05
Standard deviation authors/publication1.061.241.551.451.611.661.751.75
Percentage share of publications with n coauthors
n=039.29%32.36%24.89%21.8%17.89%13.69%11.75%11.72%
n=133.67%34.04%36.58%35.8%32.73%29.59%27.29%27.22%
n=219.39%21.5%22.68%23.98%26.66%28.47%28.39%28.42%
n>27.14%11.2%14.31%16.83%21.05%26.97%31.45%31.53%
Number of authors sharing common publications1739583952865916767301224157042301
Their percentage share87.37%91.33%94.27%96.02%97.55%98.38%98.71%98.71%
The average: coauthors/author1.561.571.872.12.312.532.632.64
The average: coauthors/author sharing a common publication 1.79 1.72 1.98 2.19 2.36 2.57 2.67 2.68