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README.md

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+---
+language:
+- en
+- lt
+
+tags:
+- translation
+
+license: cc-by-4.0
+model-index:
+- name: opus-mt-tc-big-lt-en
+  results:
+  - task:
+      name: Translation lit-eng
+      type: translation
+      args: lit-eng
+    dataset:
+      name: flores101-devtest
+      type: flores_101
+      args: lit eng devtest
+    metrics:
+       - name: BLEU
+         type: bleu
+         value: 34.3
+  - task:
+      name: Translation lit-eng
+      type: translation
+      args: lit-eng
+    dataset:
+      name: newsdev2019
+      type: newsdev2019
+      args: lit-eng
+    metrics:
+       - name: BLEU
+         type: bleu
+         value: 32.9
+  - task:
+      name: Translation lit-eng
+      type: translation
+      args: lit-eng
+    dataset:
+      name: tatoeba-test-v2021-08-07
+      type: tatoeba_mt
+      args: lit-eng
+    metrics:
+       - name: BLEU
+         type: bleu
+         value: 61.6
+  - task:
+      name: Translation lit-eng
+      type: translation
+      args: lit-eng
+    dataset:
+      name: newstest2019
+      type: wmt-2019-news
+      args: lit-eng
+    metrics:
+       - name: BLEU
+         type: bleu
+         value: 32.3
+---
+# opus-mt-tc-big-lt-en
+
+Neural machine translation model for translating from Lithuanian (lt) to English (en).
+
+This model is part of the [OPUS-MT project](https://github.com/Helsinki-NLP/Opus-MT), an effort to make neural machine translation models widely available and accessible for many languages in the world. All models are originally trained using the amazing framework of [Marian NMT](https://marian-nmt.github.io/), an efficient NMT implementation written in pure C++. The models have been converted to pyTorch using the transformers library by huggingface. Training data is taken from [OPUS](https://opus.nlpl.eu/) and training pipelines use the procedures of [OPUS-MT-train](https://github.com/Helsinki-NLP/Opus-MT-train).
+
+* Publications: [OPUS-MT – Building open translation services for the World](https://aclanthology.org/2020.eamt-1.61/) and [The Tatoeba Translation Challenge – Realistic Data Sets for Low Resource and Multilingual MT](https://aclanthology.org/2020.wmt-1.139/) (Please, cite if you use this model.)
+
+```
+@inproceedings{tiedemann-thottingal-2020-opus,
+    title = "{OPUS}-{MT} {--} Building open translation services for the World",
+    author = {Tiedemann, J{\"o}rg  and Thottingal, Santhosh},
+    booktitle = "Proceedings of the 22nd Annual Conference of the European Association for Machine Translation",
+    month = nov,
+    year = "2020",
+    address = "Lisboa, Portugal",
+    publisher = "European Association for Machine Translation",
+    url = "https://aclanthology.org/2020.eamt-1.61",
+    pages = "479--480",
+}
+
+@inproceedings{tiedemann-2020-tatoeba,
+    title = "The Tatoeba Translation Challenge {--} Realistic Data Sets for Low Resource and Multilingual {MT}",
+    author = {Tiedemann, J{\"o}rg},
+    booktitle = "Proceedings of the Fifth Conference on Machine Translation",
+    month = nov,
+    year = "2020",
+    address = "Online",
+    publisher = "Association for Computational Linguistics",
+    url = "https://aclanthology.org/2020.wmt-1.139",
+    pages = "1174--1182",
+}
+```
+
+## Model info
+
+* Release: 2022-02-25
+* source language(s): lit
+* target language(s): eng
+* model: transformer-big
+* data: opusTCv20210807+bt ([source](https://github.com/Helsinki-NLP/Tatoeba-Challenge))
+* tokenization: SentencePiece (spm32k,spm32k)
+* original model: [opusTCv20210807+bt_transformer-big_2022-02-25.zip](https://object.pouta.csc.fi/Tatoeba-MT-models/lit-eng/opusTCv20210807+bt_transformer-big_2022-02-25.zip)
+* more information released models: [OPUS-MT lit-eng README](https://github.com/Helsinki-NLP/Tatoeba-Challenge/tree/master/models/lit-eng/README.md)
+
+## Usage
+
+A short example code:
+
+```python
+from transformers import MarianMTModel, MarianTokenizer
+
+src_text = [
+    "Katė sedėjo ant kėdės.",
+    "Jukiko mėgsta bulves."
+]
+
+model_name = "pytorch-models/opus-mt-tc-big-lt-en"
+tokenizer = MarianTokenizer.from_pretrained(model_name)
+model = MarianMTModel.from_pretrained(model_name)
+translated = model.generate(**tokenizer(src_text, return_tensors="pt", padding=True))
+
+for t in translated:
+    print( tokenizer.decode(t, skip_special_tokens=True) )
+
+# expected output:
+#     The cat sat on a chair.
+#     Yukiko likes potatoes.
+```
+
+You can also use OPUS-MT models with the transformers pipelines, for example:
+
+```python
+from transformers import pipeline
+pipe = pipeline("translation", model="Helsinki-NLP/opus-mt-tc-big-lt-en")
+print(pipe("Katė sedėjo ant kėdės."))
+
+# expected output: The cat sat on a chair.
+```
+
+## Benchmarks
+
+* test set translations: [opusTCv20210807+bt_transformer-big_2022-02-25.test.txt](https://object.pouta.csc.fi/Tatoeba-MT-models/lit-eng/opusTCv20210807+bt_transformer-big_2022-02-25.test.txt)
+* test set scores: [opusTCv20210807+bt_transformer-big_2022-02-25.eval.txt](https://object.pouta.csc.fi/Tatoeba-MT-models/lit-eng/opusTCv20210807+bt_transformer-big_2022-02-25.eval.txt)
+* benchmark results: [benchmark_results.txt](benchmark_results.txt)
+* benchmark output: [benchmark_translations.zip](benchmark_translations.zip)
+
+| langpair | testset | chr-F | BLEU  | #sent | #words |
+|----------|---------|-------|-------|-------|--------|
+| lit-eng | tatoeba-test-v2021-08-07 | 0.74881 | 61.6 | 2528 | 17855 |
+| lit-eng | flores101-devtest | 0.60662 | 34.3 | 1012 | 24721 |
+| lit-eng | newsdev2019 | 0.59995 | 32.9 | 2000 | 49312 |
+| lit-eng | newstest2019 | 0.61742 | 32.3 | 1000 | 25878 |
+
+## Acknowledgements
+
+The work is supported by the [European Language Grid](https://www.european-language-grid.eu/) as [pilot project 2866](https://live.european-language-grid.eu/catalogue/#/resource/projects/2866), by the [FoTran project](https://www.helsinki.fi/en/researchgroups/natural-language-understanding-with-cross-lingual-grounding), funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 771113), and the [MeMAD project](https://memad.eu/), funded by the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No 780069. We are also grateful for the generous computational resources and IT infrastructure provided by [CSC -- IT Center for Science](https://www.csc.fi/), Finland.
+
+## Model conversion info
+
+* transformers version: 4.16.2
+* OPUS-MT git hash: 3405783
+* port time: Wed Apr 13 19:55:51 EEST 2022
+* port machine: LM0-400-22516.local

benchmark_results.txt

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+lit-eng	flores101-dev	0.61208	34.1	997	23555
+lit-eng	flores101-devtest	0.60662	34.3	1012	24721
+lit-eng	newsdev2019	0.59995	32.9	2000	49312
+lit-eng	newstest2019	0.61742	32.3	1000	25878
+lit-eng	tatoeba-test-v2020-07-28	0.75045	61.8	2500	17688
+lit-eng	tatoeba-test-v2021-03-30	0.74995	61.7	5003	35368
+lit-eng	tatoeba-test-v2021-08-07	0.74881	61.6	2528	17855

benchmark_translations.zip

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config.json

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+  "activation_function": "relu",
+  "architectures": [
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+  ],
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+  "bad_words_ids": [
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+  "bos_token_id": 0,
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+  "decoder_attention_heads": 16,
+  "decoder_ffn_dim": 4096,
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+  "encoder_layers": 6,
+  "eos_token_id": 44847,
+  "forced_eos_token_id": 44847,
+  "init_std": 0.02,
+  "is_encoder_decoder": true,
+  "max_length": 512,
+  "max_position_embeddings": 1024,
+  "model_type": "marian",
+  "normalize_embedding": false,
+  "num_beams": 4,
+  "num_hidden_layers": 6,
+  "pad_token_id": 58576,
+  "scale_embedding": true,
+  "share_encoder_decoder_embeddings": true,
+  "static_position_embeddings": true,
+  "torch_dtype": "float16",
+  "transformers_version": "4.18.0.dev0",
+  "use_cache": true,
+  "vocab_size": 58577
+}

pytorch_model.bin

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special_tokens_map.json

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+{"eos_token": "</s>", "unk_token": "<unk>", "pad_token": "<pad>"}

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tokenizer_config.json

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