jay

README.md

@@ -22,22 +22,16 @@ task_ids:
 - masked-language-modeling
 paperswithcode_id: openwebtext
 dataset_info:
-  config_name: plain_text
   features:
   - name: text
     dtype: string
+  config_name: plain_text
   splits:
   - name: train
     num_bytes: 39769491688
     num_examples: 8013769
-  download_size: 24193092408
+  download_size: 12880189440
   dataset_size: 39769491688
-configs:
-- config_name: plain_text
-  data_files:
-  - split: train
-    path: plain_text/train-*
-  default: true
 ---
 
 # Dataset Card for "openwebtext"

openwebtext.py

@@ -0,0 +1,79 @@
+# coding=utf-8
+# Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""The Open WebText Corpus"""
+
+import re
+
+import datasets
+
+
+_CITATION = """\
+@misc{Gokaslan2019OpenWeb,
+  title={OpenWebText Corpus},
+  author={Aaron Gokaslan*, Vanya Cohen*, Ellie Pavlick, Stefanie Tellex},
+  howpublished{\\url{http://Skylion007.github.io/OpenWebTextCorpus}},
+  year={2019}
+}
+"""
+
+_DESCRIPTION = """\
+An open-source replication of the WebText dataset from OpenAI.
+"""
+
+_N_DATA_FILES = 21
+_DATA_FILES = ["subsets/urlsf_subset{:02d}.tar".format(i) for i in range(_N_DATA_FILES)]
+
+
+class Openwebtext(datasets.GeneratorBasedBuilder):
+    """The Open WebText dataset."""
+
+    BUILDER_CONFIGS = [
+        datasets.BuilderConfig(
+            name="plain_text",
+            description="Plain text",
+            version=datasets.Version("1.0.0"),
+        )
+    ]
+
+    def _info(self):
+        return datasets.DatasetInfo(
+            description=_DESCRIPTION,
+            features=datasets.Features({"text": datasets.Value("string")}),
+            homepage="https://skylion007.github.io/OpenWebTextCorpus/",
+            citation=_CITATION,
+        )
+
+    def _split_generators(self, dl_manager):
+        archives = dl_manager.download(_DATA_FILES)
+        return [
+            datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={
+                "archive_iterators": [
+                    dl_manager.iter_archive(archive) for archive in archives
+                ],
+                "iter_archive": dl_manager.iter_archive
+            }),
+        ]
+
+    def _generate_examples(self, archive_iterators, iter_archive):
+        """Yields examples."""
+        for archive_iterator in archive_iterators:
+            for xz_filepath, xz_f in archive_iterator:
+                if not xz_filepath.endswith(".xz"):
+                    continue
+                for txt_filepath, txt_f in iter_archive(xz_f):
+                    if not txt_filepath.endswith(".txt"):
+                        continue
+                    idx = f"{xz_filepath}/{txt_filepath}"
+                    yield idx, {"text": re.sub("\n\n\n+", "\n\n", txt_f.read().decode("utf-8")).strip()}

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