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)
1979	28	28	26	26	0	10	5290	105235	110525	95.214	92.857	94.021	26	0	0
1980	44	44	41	41	0	26	4401	117779	122180	96.398	93.182	94.763	41	0	0
1981	36	36	34	34	4	21	6069	168426	174495	96.522	94.444	95.472	34	0	0
1982	39	39	38	38	9	24	2828	128108	130936	97.840	97.436	97.638	38	0	0
1983	25	25	25	25	8	21	4440	143701	148141	97.003	100.000	98.479	25	0	0
1984	116	116	112	112	41	79	15638	458816	474454	96.704	96.552	96.628	111	0	1
1985	40	40	35	35	18	27	11597	251287	262884	95.589	87.500	91.366	35	0	0
1986	41	41	41	41	17	30	6077	224163	230240	97.361	100.000	98.663	41	0	0
1987	34	34	34	34	21	30	5422	192219	197641	97.257	100.000	98.609	34	0	0
1988	35	35	34	34	18	27	6944	204037	210981	96.709	97.143	96.925	34	0	0
1989	34	34	34	34	17	32	5690	213650	219340	97.406	100.000	98.686	34	0	0
1990	39	39	39	39	22	37	5994	234950	240944	97.512	100.000	98.740	39	0	0
1991	56	56	56	56	20	41	6050	249948	255998	97.637	100.000	98.804	56	0	0
1992	54	54	54	54	23	46	5188	246216	251404	97.936	100.000	98.957	54	0	0
1993	47	47	47	47	12	38	5727	221023	226750	97.474	100.000	98.721	47	0	0
1994	52	52	52	52	12	45	5544	257042	262586	97.889	100.000	98.933	52	0	0
1995	56	56	56	56	11	44	5863	245263	251126	97.665	100.000	98.819	56	0	0
1996	58	58	58	58	14	43	6686	291638	298324	97.759	100.000	98.867	58	0	0
1997	73	73	73	73	11	55	8903	378401	387304	97.701	100.000	98.837	73	0	0
1998	245	245	243	243	74	191	24592	1009137	1033729	97.621	99.184	98.396	242	1	0
1999	83	83	83	83	25	64	8560	387753	396313	97.840	100.000	98.908	83	0	0
2000	79	79	50	50	42	48	3565	199113	202678	98.241	63.291	76.985	49	0	1
2001	70	70	66	66	61	65	7379	327019	334398	97.793	94.286	96.008	66	0	0
2002	65	65	58	58	57	58	5215	298351	303566	98.282	89.231	93.538	58	0	0
2003	110	110	104	104	99	103	8677	461852	470529	98.156	94.545	96.317	104	0	0
2004	100	100	98	98	98	98	9449	515182	524631	98.199	98.000	98.099	98	0	0
2005	103	103	103	103	103	103	8397	503098	511495	98.358	100.000	99.172	103	0	0
2006	272	272	270	270	267	269	24118	1398064	1422182	98.304	99.265	98.782	270	0	0
2007	188	188	188	188	184	188	13021	829549	842570	98.455	100.000	99.221	188	0	0
2008	187	187	187	187	183	187	12516	839433	851949	98.531	100.000	99.260	187	0	0
2009	214	214	214	214	212	214	17484	963890	981374	98.218	100.000	99.101	214	0	0
2010	230	230	230	230	229	230	23073	1256932	1280005	98.197	100.000	99.091	230	0	0
2011	292	292	292	292	288	292	25457	1404595	1430052	98.220	100.000	99.102	292	0	0
2012	187	187	187	187	185	187	16685	865685	882370	98.109	100.000	99.046	187	0	0
2013	328	328	328	328	324	328	31145	1618391	1649536	98.112	100.000	99.047	328	0	0
2014	286	286	286	286	285	286	29436	1472744	1502180	98.040	100.000	99.011	286	0	0
2015	318	318	317	317	314	317	34273	1587453	1621726	97.887	99.686	98.778	317	0	0
total	4264	4264	4193	4193	3308	3904	427393	20270143	20697536	97.935	98.335	98.135	4190	1	2

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)= 11.982516666666667 minutes with 8 cores

computed on: Sun Sep 25 17:48:17 CEST 2016 from: METADONNEES_ACL_140330.txt