year | nb of papers from the metadata | nb of papers in PDF | nb of papers in XML (= output of PDFBox) | nb of non empty papers as extraction result | nb of papers with an abstract (from extraction) | nb of papers with references (from extraction) | nb of unknown words | nb of known words | nb of words of the content | evaluation of noise = pourcentage of nb of known words / nb of words of the content | evaluation of silence = pourcentage of non empty papers as extraction result / PDF docs | combined evaluation of noise and silence | nb of English papers | nb of French papers | nb of papers in another language (es+de+ru) |
1988 | 6 | 6 | 4 | 4 | 2 | 2 | 1165 | 19626 | 20791 | 94.397 | 66.667 | 78.145 | 0 | 4 | 0 |
1989 | 10 | 10 | 10 | 10 | 7 | 6 | 2609 | 48440 | 51049 | 94.889 | 100.000 | 97.378 | 0 | 9 | 1 |
1990 | 3 | 3 | 3 | 3 | 2 | 2 | 974 | 18071 | 19045 | 94.886 | 100.000 | 97.376 | 0 | 3 | 0 |
1991 | 11 | 11 | 8 | 8 | 3 | 4 | 3540 | 47612 | 51152 | 93.079 | 72.727 | 81.654 | 0 | 8 | 0 |
1992 | 6 | 6 | 6 | 6 | 4 | 3 | 2906 | 38551 | 41457 | 92.990 | 100.000 | 96.368 | 0 | 6 | 0 |
1993 | 11 | 11 | 11 | 11 | 3 | 7 | 2864 | 46091 | 48955 | 94.150 | 100.000 | 96.987 | 0 | 10 | 1 |
1994 | 7 | 7 | 6 | 6 | 1 | 2 | 4024 | 55469 | 59493 | 93.236 | 85.714 | 89.317 | 0 | 6 | 0 |
1995 | 6 | 6 | 6 | 6 | 2 | 5 | 1534 | 26280 | 27814 | 94.485 | 100.000 | 97.164 | 0 | 5 | 1 |
1996 | 4 | 4 | 4 | 4 | 1 | 2 | 517 | 11842 | 12359 | 95.817 | 100.000 | 97.864 | 0 | 4 | 0 |
1997 | 9 | 9 | 9 | 9 | 3 | 8 | 2334 | 56623 | 58957 | 96.041 | 100.000 | 97.981 | 0 | 9 | 0 |
1998 | 3 | 3 | 3 | 3 | 1 | 3 | 880 | 17870 | 18750 | 95.307 | 100.000 | 97.597 | 0 | 3 | 0 |
1999 | 13 | 13 | 12 | 12 | 4 | 6 | 5417 | 78263 | 83680 | 93.527 | 92.308 | 92.913 | 0 | 12 | 0 |
2000 | 5 | 5 | 5 | 5 | 3 | 2 | 570 | 9174 | 9744 | 94.150 | 100.000 | 96.987 | 0 | 5 | 0 |
2001 | 14 | 14 | 13 | 13 | 3 | 9 | 5291 | 82967 | 88258 | 94.005 | 92.857 | 93.428 | 0 | 13 | 0 |
2002 | 3 | 3 | 3 | 3 | 1 | 2 | 549 | 19821 | 20370 | 97.305 | 100.000 | 98.634 | 0 | 3 | 0 |
2003 | 4 | 4 | 4 | 4 | 3 | 1 | 621 | 18240 | 18861 | 96.707 | 100.000 | 98.326 | 0 | 4 | 0 |
2004 | 6 | 6 | 6 | 6 | 4 | 5 | 1445 | 42652 | 44097 | 96.723 | 100.000 | 98.334 | 1 | 5 | 0 |
2005 | 18 | 18 | 15 | 15 | 14 | 12 | 2062 | 71965 | 74027 | 97.215 | 83.333 | 89.740 | 1 | 14 | 0 |
2006 | 18 | 18 | 18 | 18 | 7 | 10 | 5796 | 117896 | 123692 | 95.314 | 100.000 | 97.601 | 1 | 17 | 0 |
2007 | 29 | 29 | 19 | 19 | 8 | 8 | 1895 | 41710 | 43605 | 95.654 | 65.517 | 77.768 | 5 | 6 | 8 |
2008 | 21 | 21 | 19 | 19 | 15 | 16 | 3455 | 145926 | 149381 | 97.687 | 90.476 | 93.943 | 0 | 19 | 0 |
2009 | 9 | 9 | 9 | 9 | 4 | 1 | 4982 | 72061 | 77043 | 93.533 | 100.000 | 96.659 | 0 | 9 | 0 |
2010 | 16 | 16 | 14 | 14 | 7 | 8 | 2053 | 56285 | 58338 | 96.481 | 87.500 | 91.771 | 1 | 13 | 0 |
total | 232 | 232 | 207 | 207 | 102 | 124 | 57483 | 1143435 | 1200918 | 95.213 | 89.224 | 92.122 | 9 | 187 | 11 |