add data files

README.md

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+# WMT16 English-Romanian Translation Data w/ further preprocessing
+
+The original instructions are [here](https://github.com/rsennrich/wmt16-scripts/tree/master/sample).
+
+It was created by running:
+
+```
+git clone https://github.com/rsennrich/wmt16-scripts
+cd wmt16-scripts
+cd sample
+./download_files.sh
+./preprocess.sh
+```
+https://github.com/rsennrich/wmt16-scripts/tree/master/sample
+
+It was originally used by  `transformers` [`finetune_trainer.py`](https://github.com/huggingface/transformers/blob/641f418e102218c4bf16fcd3124bfebed6217ef6/examples/seq2seq/finetune_trainer.py)
+and resided at https://cdn-datasets.huggingface.co/translation/wmt_en_ro.tar.gz
+
+It was further converted to `jsonlines` with the included in this repository `convert-to-jsonlines.py` script so that it could be loaded by `datasets`.

convert-to-jsonlines.py

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+#!/usr/bin/env python
+
+# sacrebleu format to jsonlines
+
+import io
+import json
+import re
+
+src_lang, tgt_lang = ["en", "ro"]
+
+for split in ["train", "val", "test"]:
+    recs = []
+    fout = f"{split}.json"
+    with io.open(fout, "w", encoding="utf-8") as f:
+        for type in ["source", "target"]:
+            fin = f"{split}.{type}"
+            recs.append([line.strip() for line in open(fin)])
+        for src, tgt in zip(*recs):
+            out = {"translation": { src_lang: src, tgt_lang: tgt } }
+            x = json.dumps(out, indent=0, ensure_ascii=False)
+            x = re.sub(r'\n', ' ', x, 0, re.M)
+            f.write(x + "\n")

test.json

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+version https://git-lfs.github.com/spec/v1
+oid sha256:132df683c4c2008c60dc27c772acb1e5cbcf5f6d79f2fb6adb0b08bd896fbd0e
+size 608194

train.json

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+version https://git-lfs.github.com/spec/v1
+oid sha256:9602761a4f8c56a5c7677fbd78e0a66987fdede826aaaffbb45b6faaf11cb651
+size 209195474

val.json

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+version https://git-lfs.github.com/spec/v1
+oid sha256:2ebee4e57c65b2a06484e1de295b6f63a2646d1095a0b05ca0cf1854a3de955b
+size 631127