MIT Press

Table 1:

Statistics on the data sets considered in our assessment, where S and C stand for Simple and Complex, respectively. When data sets are multilingual, texts from all languages are considered for computing average. * Given that ground truth scores for MTDE are continuous, for illustration purposes we reported statistics grouped in 4 levels, i.e., 0-25, 26-50, 51-75, 76-100 (original values preserved in the experiments).

	SimpleWiki		Wizenoze					Newsela
	S	C	1	2	3	4	5	3	4	5	6	7	8	9	12
Words per text	111	5987	35	128	67	266	801	448	674	777	872	927	990	970	1169
Sentences per text	6	222	3	10	5	16	35	43	54	54	54	52	46	46	50
Syllables per word	1.31	1.37	1.40	1.41	1.44	1.52	1.53	1.27	1.30	1.33	1.36	1.39	1.40	1.43	1.42
Words per sentence	17	25	11	14	14	16	21	10	12	14	16	18	20	21	24
Ratio of unique words	0.69	0.32	0.86	0.79	0.79	0.65	0.55	0.44	0.42	0.42	0.42	0.43	0.43	0.43	0.43
Flesch-Kincaid	6.37	10.70	5.40	6.61	6.65	8.65	10.76	3.42	4.63	5.72	6.81	7.77	8.73	9.68	10.48

	WikiViki		Ikasbil					MTDE*
	S	C	A2	B1	B2	C1	C2	1	2	3	4
Words per text	303	6036	215	276	320	327	354	294	276	288	301
Sentences per text	16	217	21	18	18	16	15	11	12	13	23
Syllables per word	1.36	1.38	1.40	1.39	1.43	1.37	1.40	1.51	1.47	1.37	1.23
Words per sentence	17	25	10	15	17	20	23	26	23	23	14
Ratio of unique words	0.62	0.31	0.51	0.53	0.52	0.52	0.51	0.56	0.56	0.54	0.49
Flesch-Kincaid	7.13	10.71	4.83	6.66	7.91	8.38	9.90	12.5	10.71	9.63	4.64

	SimpleWiki		Wizenoze					Newsela
	S	C	1	2	3	4	5	3	4	5	6	7	8	9	12
Words per text	111	5987	35	128	67	266	801	448	674	777	872	927	990	970	1169
Sentences per text	6	222	3	10	5	16	35	43	54	54	54	52	46	46	50
Syllables per word	1.31	1.37	1.40	1.41	1.44	1.52	1.53	1.27	1.30	1.33	1.36	1.39	1.40	1.43	1.42
Words per sentence	17	25	11	14	14	16	21	10	12	14	16	18	20	21	24
Ratio of unique words	0.69	0.32	0.86	0.79	0.79	0.65	0.55	0.44	0.42	0.42	0.42	0.43	0.43	0.43	0.43
Flesch-Kincaid	6.37	10.70	5.40	6.61	6.65	8.65	10.76	3.42	4.63	5.72	6.81	7.77	8.73	9.68	10.48

	WikiViki		Ikasbil					MTDE*
	S	C	A2	B1	B2	C1	C2	1	2	3	4
Words per text	303	6036	215	276	320	327	354	294	276	288	301
Sentences per text	16	217	21	18	18	16	15	11	12	13	23
Syllables per word	1.36	1.38	1.40	1.39	1.43	1.37	1.40	1.51	1.47	1.37	1.23
Words per sentence	17	25	10	15	17	20	23	26	23	23	14
Ratio of unique words	0.62	0.31	0.51	0.53	0.52	0.52	0.51	0.56	0.56	0.54	0.49
Flesch-Kincaid	7.13	10.71	4.83	6.66	7.91	8.38	9.90	12.5	10.71	9.63	4.64

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