Create README.md

README.md

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+---
+language:
+- es
+license: mit
+widget:
+- text: "Manuel Romero ha creado con el equipo de BERTIN un modelo que procesa documentos <mask> largos."
+tags:
+- longformer
+- bertin
+- spanish
+datasets:
+- spanish_large_corpus
+
+---
+
+# longformer-base-4096-spanish
+
+## [Longformer](https://arxiv.org/abs/2004.05150) is a Transformer model for long documents. 
+
+`longformer-base-4096` is a BERT-like model started from the RoBERTa checkpoint (**BERTIN** in this case) and pre-trained for *MLM* on long documents (from BETO's `all_wikis`). It supports sequences of length up to 4,096! 
+
+ 
+
+**Longformer** uses a combination of a sliding window (*local*) attention and *global* attention. Global attention is user-configured based on the task to allow the model to learn task-specific representations.
+
+
+This model was made following the research done by [Iz Beltagy and Matthew E. Peters and Arman Cohan](https://arxiv.org/abs/2004.05150).