Estimation of the quality based on absence/presence of words in the TagParser lexicon.

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)
1990	236	236	227	227	227	0	166	27880	28046	99.408	96.186	97.771	227	0	0
1991	292	292	284	284	284	0	231	35815	36046	99.359	97.260	98.299	284	0	0
1992	249	249	242	242	242	0	249	31637	31886	99.219	97.189	98.193	242	0	0
1993	217	217	217	217	217	0	215	30497	30712	99.300	100.000	99.649	217	0	0
1994	255	255	249	249	249	0	248	33263	33511	99.260	97.647	98.447	249	0	0
1995	297	297	297	297	277	256	11843	764633	776476	98.475	100.000	99.232	297	0	0
1996	297	297	297	297	283	272	11349	751323	762672	98.512	100.000	99.250	297	0	0
1997	374	374	372	372	363	273	16964	770233	787197	97.845	99.465	98.648	372	0	0
1998	328	328	327	327	321	255	14158	756497	770655	98.163	99.695	98.923	327	0	0
1999	281	281	279	279	274	247	13501	735525	749026	98.198	99.288	98.740	279	0	0
2000	318	318	316	316	311	262	14803	791146	805949	98.163	99.371	98.763	316	0	0
2001	299	299	297	297	291	241	11860	710483	722343	98.358	99.331	98.842	297	0	0
2002	354	354	348	348	334	274	16827	778583	795410	97.884	98.305	98.094	336	0	12
2003	393	393	392	392	389	353	17383	1047746	1065129	98.368	99.746	99.052	392	0	0
2004	395	395	395	395	391	370	19190	1120434	1139624	98.316	100.000	99.151	395	0	0
2005	381	381	372	372	371	361	18923	1114738	1133661	98.331	97.638	97.983	372	0	0
2006	435	435	435	435	432	420	24356	1339456	1363812	98.214	100.000	99.099	435	0	0
2007	369	369	369	369	368	360	24952	1176460	1201412	97.923	100.000	98.951	369	0	0
2008	414	414	414	414	413	389	24338	1280999	1305337	98.136	100.000	99.059	414	0	0
2009	394	394	394	394	393	357	22323	1177342	1199665	98.139	100.000	99.061	394	0	0
2010	423	423	422	422	422	412	27936	1370261	1398197	98.002	99.764	98.875	422	0	0
2011	458	458	458	458	457	444	31586	1477835	1509421	97.907	100.000	98.943	458	0	0
2012	409	409	408	408	408	392	26960	1336534	1363494	98.023	99.756	98.882	408	0	0
2013	577	577	577	577	577	571	46522	2049257	2095779	97.780	100.000	98.878	577	0	0
2014	577	577	577	577	577	563	47552	2054353	2101905	97.738	100.000	98.856	577	0	0
2015	796	796	793	793	788	784	84524	2937565	3022089	97.203	99.623	98.398	793	0	0
total	9818	9818	9758	9758	9659	7856	528959	25700495	26229454	97.983	99.389	98.681	9746	0	12

Note#1: the unknowns with initiale lower-case letter denote some full-size unknown words but often words which have been cut due to bad interpreation of PDF multi-columns by PDFBox.

Note#2: a paper without any content (i.e. without any body) is not taken in the pipeline. This situation may be the consequence of a processing problem or may be it is an invited presentation without any text.In constrast, a paper without abstract is taken.

Note#3: a paper without any content holds an entry in the metadata, and normally, each paper has an entry in the metadata.

Note#4: the combined evaluation is computed as: 2*EvalNoise*EvalSilence / EvalNoise+EvalSilence

total elapsed time (read and display included)= 13.1149 minutes with 8 cores

computed on: Sun Sep 25 18:39:51 CEST 2016 from: METADONNEES_ICASSPS_141030.txt