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STATISTICS FOR THE ROUGH SET DATABASE SYSTEM


The data record to the end of a given five-year period
(integer numbers denote hundreds)

Year of completion 1981-19851981-19901981-19951981-20001981-20051981-2010
Number of publications 34119584154429473797
Number of authors 124723566115772304
The average: publication/author 43.854.074.183.643.36
Standard deviation: publication/author 4.935.268.3610.9412.1212.03
The average: authors/publications 0.410.520.640.790.951.04
Standard deviation: authors/publications 3.663.433.573.562.942.63
Percentage share of publications with n coauthors
absence of authors (a publication under edition)0%1.68%5.14%5.38%6.18%5.61%
n=070.59%58.82%47.43%41.52%34.95%31.89%
n=120.59%29.41%33.22%32.45%31.56%32.05%
n=25.88%6.72%8.73%12.95%17.2%19.2%
n>22.94%3.36%5.48%7.71%10.11%11.25%
Number of authors sharing common publications
their percentage share
123619258014632177
100%76.6%81.7%87.75%92.77%94.49%
The average: coauthors/author 2.172.132.372.793.123.36
The average: coauthors/author sharing a common publication 2.172.782.93.183.363.55