Create README.md

README.md

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+This dataset obtains genealogical and typological information for the 104 languages used for pre-training of the language model multilingual BERT (Devlin et al., 2019). 
+The genealogical information covers the language family and the genus for each language.
+For typological description of the pre-training languages, 36 features from WALS (Dryer & Haspelmath, 2013) were used.
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+The information provided here can be used, among other things, to investigate how the pre-training corpus is structured from a genealogical and typological perspective and to what extent, if any, this structure is related to the performance of the language model. 
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+In addition to the table of linguistic features, a pdf file was uploaded listing all the grammars and language descriptive materials used to compile the linguistic information.