Model Performance

System Performance on UD Treebanks
System Performance on NER Corpora

Here we report the performance of Stanza’s pretrained models on all supported languages. Again, performances of models for tokenization, multi-word token (MWT) expansion, lemmatization, part-of-speech (POS) and morphological features tagging and dependency parsing are reported on the Universal Dependencies (UD) treebanks, while performances of the NER models are reported separately.

System Performance on UD Treebanks

In the table below you can find the performance of Stanza’s pretrained UD models. All models are trained and tested with the Universal Dependencies v2.5 treebanks. Note that all scores reported are from an end-to-end evaluation on the official test sets (from raw text to the full CoNLL-U file), and are generated with the CoNLL 2018 UD shared task official evaluation script. For detailed interpretation of these scores and the evaluation scripts we used, please refer to the CoNLL 2018 UD Shared Task Evaluation page. For details on how we handled treebanks with no training data, please refer to our CoNLL 2018 system description paper.

For more detailed results and better viewing experience, please access the results in this Google Spreadsheet.

Treebank	Tokens	Sentences	Words	UPOS	XPOS	UFeats	AllTags	Lemmas	UAS	LAS	CLAS	MLAS	BLEX
Macro Avg	98.64	86.81	98.43	90.99	87.88	87.71	82.03	90.51	79.87	74.82	70.91	63.26	66.04
UD_Afrikaans-AfriBooms	99.75	99.65	99.75	97.56	94.27	97.03	94.24	97.48	87.51	84.45	78.58	74.7	75.39
UD_Ancient_Greek-Perseus	99.98	98.85	99.98	92.54	85.22	91.06	84.98	88.26	78.75	73.35	67.88	54.22	57.54
UD_Ancient_Greek-PROIEL	100	51.65	100	97.38	97.75	92.09	90.96	97.42	80.34	76.33	71.37	61.23	69.23
UD_Arabic-PADT	99.98	80.43	97.88	94.89	91.75	91.86	91.51	93.27	83.27	79.33	76.24	70.58	72.79
UD_Armenian-ArmTDP	98.96	95.22	96.58	92.49	96.58	88.19	86.94	92.27	78.18	72.46	68.5	60.39	65.88
UD_Basque-BDT	100	100	100	96.23	100	93.09	91.34	96.52	86.19	82.76	81.29	73.56	78.26
UD_Belarusian-HSE	99.38	78.24	99.38	91.92	31.34	77.73	26.31	79.48	69.28	63.88	58.49	41.88	44.05
UD_Bulgarian-BTB	99.93	97.27	99.93	98.68	96.35	97.59	95.75	97.29	93.37	90.21	86.84	83.71	83.62
UD_Buryat-BDT	96.5	87.83	96.5	41.83	96.5	33.72	26.77	52.45	30.61	13.49	8.97	1.66	3.48
UD_Catalan-AnCora	99.99	99.84	99.98	98.75	98.66	98.29	97.74	98.47	92.84	90.56	86.25	84.07	85.31
UD_Chinese-GSD	92.83	98.8	92.83	89.12	88.93	92.11	88.18	92.83	72.88	69.82	66.81	63.26	66.81
UD_Chinese-GSDSimp	92.92	99.1	92.92	89.05	88.84	92.12	88.03	92.92	73.44	70.44	67.69	64.07	67.69
UD_Classical_Chinese-Kyoto	99.47	46.95	99.47	90.25	89.64	92.68	87.34	99.45	71.81	66.08	64.54	62.61	64.54
UD_Coptic-Scriptorium	99.94	29.99	86.06	82.37	80.25	73.51	69.47	83.12	61.94	59.71	50.49	34.17	49.54
UD_Croatian-SET	99.96	98.15	99.96	97.88	94.86	95.32	94.22	96.67	90.27	85.56	82.43	76.37	78.78
UD_Czech-CAC	99.99	100	99.97	98.76	94.79	93.52	92.65	98	91.7	89.19	86.84	80.14	84.89
UD_Czech-CLTT	99.93	100	99.84	98.92	91.89	91.97	91.28	97.48	86.67	83.38	79.35	70.7	77.56
UD_Czech-FicTree	99.97	98.6	99.96	98.31	95.23	96.01	94.58	98.43	92.69	89.81	87.3	81.94	85.42
UD_Czech-PDT	99.97	94.14	99.97	98.5	95.38	94.61	93.67	98.55	91	88.64	86.91	81.12	85.45
UD_Danish-DDT	99.96	93.57	99.96	97.75	99.96	97.38	96.45	97.32	86.83	84.19	81.2	77.13	78.46
UD_Dutch-Alpino	99.96	89.98	99.96	96.33	94.76	96.28	94.13	96.97	89.56	86.44	81.22	75.76	77.8
UD_Dutch-LassySmall	99.9	77.95	99.9	95.97	94.87	96.22	94.05	97.59	85.34	81.93	75.54	71.98	73.49
UD_English-EWT	99.01	81.13	99.01	95.4	95.12	96.11	93.9	97.21	86.22	83.59	80.21	76.02	78.5
UD_English-GUM	99.82	86.35	99.82	95.89	95.91	96.87	94.99	96.8	87.06	83.57	78.42	74.68	74.97
UD_English-LinES	99.95	88.49	99.95	96.88	95.18	96.76	93.11	98.32	85.82	81.97	79.04	74.47	77.31
UD_English-ParTUT	99.68	100	99.59	96.15	95.83	95.21	93.92	97.45	90.31	87.35	82.56	76.19	80.53
UD_Estonian-EDT	99.96	93.32	99.96	97.19	98.04	95.77	94.43	96.05	86.68	83.82	82.41	77.63	78.32
UD_Estonian-EWT	99.2	67.14	99.2	88.86	91.7	87.16	83.43	85.62	67.23	60.07	56.21	48.32	47.38
UD_Finnish-FTB	100	89.59	99.97	95.5	95.12	96.51	93.92	96.16	89.09	86.39	83.8	79.9	81.02
UD_Finnish-TDT	99.77	93.05	99.73	96.97	97.72	95.36	94.44	94.98	88.62	86.18	84.66	79.73	80.24
UD_French-GSD	99.68	94.92	99.48	97.3	99.47	96.72	96.05	97.64	91.38	89.05	84.38	80.3	82.4
UD_French-ParTUT	99.82	100	99.37	96.6	96.37	93.98	93.41	95.48	90.71	88.37	83.37	74.41	77.88
UD_French-Sequoia	99.9	88.79	99.58	98.19	99.58	97.58	96.94	98.25	90.47	88.34	84.71	81.77	83.31
UD_French-Spoken	100	22.09	99.45	95.49	97.06	99.45	93.23	96.53	75.82	70.71	62.13	59.57	60.44
UD_Galician-CTG	99.89	99.13	99.32	97.21	96.99	99.14	96.71	97.94	85.22	82.66	77.24	71.13	75.96
UD_Galician-TreeGal	99.59	89.17	98.41	94.29	91.81	93.36	90.88	94.39	78.04	72.94	65.61	59.06	61.49
UD_German-GSD	99.53	85.79	99.53	94.07	96.98	89.52	84.51	96.37	85.39	80.61	75.38	58.57	71.24
UD_German-HDT	100	97.41	100	98.04	97.94	91.77	91.34	97.48	94.91	92.59	88.73	77.26	85.63
UD_Gothic-PROIEL	100	39.71	100	96.17	96.71	90.62	88.86	96.48	74.67	69.03	66.21	57.11	64.38
UD_Greek-GDT	99.88	93.18	99.89	97.84	97.84	94.94	94.33	96.49	91.12	88.78	84.12	78	79.48
UD_Hebrew-HTB	99.98	99.69	93.19	90.46	90.46	89.24	88.45	90.27	79.18	76.6	71.05	64.51	67.79
UD_Hindi-HDTB	100	99.44	100	97.59	97.08	94.03	92.11	96.66	94.8	91.74	88.2	78.73	87.01
UD_Hungarian-Szeged	99.87	97	99.87	96.03	99.87	93.76	92.94	94.25	83.62	78.86	77.14	69.46	71.87
UD_Indonesian-GSD	99.99	93.78	99.99	93.68	94.79	96	89.17	99.61	85.17	79.19	77.04	68.86	76.68
UD_Irish-IDT	99.76	95.93	99.76	93.9	92.43	78.19	75	91.79	82.65	74.03	66.11	42.98	59.09
UD_Italian-ISDT	99.91	98.76	99.76	98.01	97.91	97.72	97.11	98.1	92.79	90.84	86.43	83.6	84.23
UD_Italian-ParTUT	99.81	100	99.77	97.82	97.76	97.79	96.94	97.57	92.24	90.01	84.39	81.77	82.05
UD_Italian-PoSTWITA	99.71	63.7	99.46	96.19	96.04	96.28	95.01	96.7	82.67	78.27	72.2	68.55	70.35
UD_Italian-TWITTIRO	99.34	52.4	98.76	94.41	94.01	93.34	91.45	93.17	78.87	72.85	64.64	58.67	59.35
UD_Italian-VIT	99.98	94.92	99.49	97.21	96.23	96.79	94.99	98.01	89.32	85.87	80.26	76.16	78.61
UD_Japanese-GSD	92.67	94.57	92.67	91.16	90.84	92.66	90.84	92.02	81.2	80.16	71.39	69.85	71.01
UD_Kazakh-KTB	93.46	88.56	94.16	56.23	56.1	42.73	36.96	52.12	44.33	25.21	20.28	7.63	10.01
UD_Korean-GSD	99.88	96.65	99.88	96.18	90.14	99.66	88	92.69	87.29	83.53	81.34	79.29	75.31
UD_Korean-Kaist	100	99.93	100	95.45	86.31	100	86.31	93.02	88.41	86.38	83.95	80.63	77.57
UD_Kurmanji-MG	94.81	87.43	94.49	57.17	55.91	43.02	38.41	56.13	32.01	21.91	16.35	3.84	5.84
UD_Latin-ITTB	99.99	80.66	99.99	98.09	95.38	96.43	93.8	98.9	87.61	85.36	84.23	80.28	83.6
UD_Latin-Perseus	100	98.24	100	90.63	78.42	82.42	77.74	83.08	71.94	61.99	57.89	45.28	47.28
UD_Latin-PROIEL	100	43.04	100	96.92	97.1	91.24	90.32	96.78	76.55	72.37	70.06	61.28	68.19
UD_Latvian-LVTB	99.82	99.01	99.82	96.03	88.25	93.46	87.73	95.55	87.84	84.44	82.16	73.91	78.25
UD_Lithuanian-ALKSNIS	99.87	88.79	99.87	93.37	85.67	87.84	84.84	92.51	78.54	73.11	70.66	60.81	65.53
UD_Lithuanian-HSE	97.53	51.11	97.53	81.08	80.04	70.72	66.44	76.9	48.1	37.45	32.37	21.1	24.86
UD_Livvi-KKPP	90.82	65.16	90.82	38.91	36.23	27.78	22.41	41.25	24.61	10.04	5.14	0.62	0.92
UD_Maltese-MUDT	99.86	84.94	99.86	95.75	95.63	99.86	95.31	99.86	83.31	78.15	70.64	67.15	70.64
UD_Marathi-UFAL	98	76.4	92.25	77.24	92.25	60.27	58.55	75.77	66.42	52.64	42.8	24.15	33.9
UD_North_Sami-Giella	99.68	99.31	99.68	91.11	92.85	87.72	83.8	88.79	74.22	68.43	65.59	58.32	58.13
UD_Norwegian-Nynorsk	99.97	94.85	99.97	97.92	99.97	96.88	96.03	97.9	91.87	89.73	87.28	82.86	84.78
UD_Norwegian-NynorskLIA	100	99.69	100	95.92	100	94.82	92.7	97.72	77.82	72.94	67.56	61.32	65.54
UD_Norwegian-Bokmaal	99.99	97.17	99.99	98.29	99.99	97.17	96.41	98.36	92.57	90.69	88.32	84.41	86.33
UD_Old_Church_Slavonic-PROIEL	100	49.26	100	96.58	96.88	90.65	89.63	95.69	79.75	74.93	74.64	65.45	72.02
UD_Old_French-SRCMF	100	100	100	96.05	96.09	97.74	95.56	100	91.38	86.35	83.39	80.05	83.39
UD_Old_Russian-TOROT	100	35.69	100	93.63	93.83	86.76	84.8	91.35	72.94	67	63.6	54.13	59.18
UD_Persian-Seraji	100	99.25	99.65	97.29	97.3	97.37	96.86	97.73	89.45	86.06	82.78	81	81.08
UD_Polish-LFG	99.95	99.83	99.95	98.55	94.66	95.84	94.07	96.86	95.8	93.94	92.35	87.62	88.64
UD_Polish-PDB	99.87	98.39	99.83	98.31	94.04	94.27	93.13	97.29	92.68	90.4	88.35	81.69	85.42
UD_Portuguese-Bosque	99.77	94.3	99.67	97.04	99.67	96.36	94.91	97.8	90.67	87.57	82.59	76.78	80.3
UD_Portuguese-GSD	99.96	98	99.87	98.18	98.18	99.79	98.17	95.83	92.83	91.36	87.44	85.87	86.75
UD_Romanian-Nonstandard	98.96	97.53	98.96	95.4	90.73	89.79	88.19	94.63	87.24	82.71	77.6	65.24	73.52
UD_Romanian-RRT	99.77	96.64	99.77	97.54	96.97	97.13	96.75	97.95	90.66	85.85	81.49	77.94	79.84
UD_Russian-GSD	99.65	97.16	99.65	97.38	97.18	93.11	92.22	95.34	88.97	84.83	82.37	75.16	77.75
UD_Russian-SynTagRus	99.57	98.86	99.57	98.2	99.57	95.91	95.59	97.51	92.38	90.6	89.01	85.04	86.78
UD_Russian-Taiga	97.11	85.79	97.11	92.25	94.7	85.76	82.61	89.28	72.09	66	61.8	51.94	55.64
UD_Scottish_Gaelic-ARCOSG	99.48	55.35	99.47	92.5	84.89	87.99	83.93	95.51	77.9	70.81	62.63	54	59.74
UD_Serbian-SET	100	99.33	100	98.44	94.26	94.55	93.86	96.34	91.79	88.78	86.5	79.48	82.38
UD_Slovak-SNK	99.97	90.93	99.97	96.34	87.15	91.59	86.34	94.73	89.96	86.82	84.74	75.39	79.35
UD_Slovenian-SSJ	99.91	91.6	99.91	98.29	95.08	95.37	94.56	97.34	91.63	89.6	87.18	82.35	84.37
UD_Slovenian-SST	100	26.59	100	93.66	88.09	88.06	85.27	94.78	63.13	56.5	51.34	44.81	48.96
UD_Spanish-AnCora	99.98	99.07	99.98	98.78	98.67	98.59	97.97	99.19	92.21	90.01	86.05	84.22	85.2
UD_Spanish-GSD	99.96	95.97	99.87	96.69	99.87	96.4	94.44	98.44	89.61	86.73	81.22	73.96	79.19
UD_Swedish_Sign_Language-SSLC	100	5.88	100	74.82	76.6	100	72.34	100	23.76	11.7	11.81	9.45	11.81
UD_Swedish-LinES	99.94	86.99	99.94	96.97	94.58	90.11	87.33	96.79	87.1	83.06	80.76	67.97	77.44
UD_Swedish-Talbanken	99.97	98.85	99.97	97.65	96.57	96.7	95.63	97.51	88.96	85.91	83.59	79.17	80.78
UD_Tamil-TTB	99.58	95.08	91.42	82.6	78.8	81.89	78.1	85.14	61.23	55.76	53.43	46.4	49.61
UD_Telugu-MTG	100	97.95	100	92.93	92.93	99.17	92.93	100	89.32	79.89	74.88	71.25	74.88
UD_Turkish-IMST	99.89	97.62	98.07	94.21	93.43	92.08	90.27	94.92	70.78	64.5	61.62	56.04	59.6
UD_Ukrainian-IU	99.81	96.65	99.79	96.77	92.49	92.53	91.31	96.49	87.11	83.86	80.51	73.38	77.28
UD_Upper_Sorbian-UFAL	89.72	79.45	89.72	58.57	89.72	38.64	36.39	52.64	34.25	23.61	17.3	4.18	8.62
UD_Urdu-UDTB	100	98.88	100	94.42	92.62	84.21	80.36	95.62	88.3	82.78	77.06	59.48	74.75
UD_Uyghur-UDT	99.79	86.9	99.79	89.45	91.92	87.92	80.54	96.16	75.55	63.61	57	46.06	54.39
UD_Vietnamese-VTB	87.25	93.15	87.25	79.5	77.9	87.02	77.87	87.2	53.63	48.16	44.88	42.17	44.85
UD_Wolof-WTB	99.97	91.06	99.42	94.09	94.03	93.11	91.26	94.6	83.25	77.05	70.94	64.25	66.99

System Performance on NER Corpora

In the table below you can find the performance of Stanza’s pretrained NER models. All numbers reported are micro-averaged F1 scores. We used canonical train/dev/test splits for all datasets except for the WikiNER datasets, for which we used random splits.

Language	Corpus	# Types	F1
Arabic	AQMAR	4	74.3
Chinese	OntoNotes	18	79.2
Dutch	CoNLL02	4	89.2
Dutch	WikiNER	4	94.8
English	CoNLL03	4	92.1
English	OntoNotes	18	88.8
French	WikiNER	4	92.9
German	CoNLL03	4	81.9
German	GermEval14	4	85.2
Russian	WikiNER	4	92.9
Spanish	CoNLL02	4	88.1
Spanish	AnCora	4	88.6

Model Performance

Table of contents

System Performance on UD Treebanks

System Performance on NER Corpora