wehub-resource-sync
49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
import re
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def wikitext_detokenizer(doc):
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string = doc["page"]
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# contractions
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string = string.replace("s '", "s'")
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string = re.sub(r"/' [0-9]/", r"/'[0-9]/", string)
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# number separators
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string = string.replace(" @-@ ", "-")
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string = string.replace(" @,@ ", ",")
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string = string.replace(" @.@ ", ".")
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# punctuation
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string = string.replace(" : ", ": ")
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string = string.replace(" ; ", "; ")
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string = string.replace(" . ", ". ")
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string = string.replace(" ! ", "! ")
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string = string.replace(" ? ", "? ")
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string = string.replace(" , ", ", ")
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# double brackets
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string = re.sub(r"\(\s*([^\)]*?)\s*\)", r"(\1)", string)
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string = re.sub(r"\[\s*([^\]]*?)\s*\]", r"[\1]", string)
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string = re.sub(r"{\s*([^}]*?)\s*}", r"{\1}", string)
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string = re.sub(r"\"\s*([^\"]*?)\s*\"", r'"\1"', string)
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string = re.sub(r"'\s*([^']*?)\s*'", r"'\1'", string)
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# miscellaneous
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string = string.replace("= = = =", "====")
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string = string.replace("= = =", "===")
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string = string.replace("= =", "==")
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string = string.replace(" " + chr(176) + " ", chr(176))
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string = string.replace(" \n", "\n")
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string = string.replace("\n ", "\n")
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string = string.replace(" N ", " 1 ")
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string = string.replace(" 's", "'s")
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return string
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def process_results(doc, results):
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(loglikelihood,) = results
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# IMPORTANT: wikitext counts number of words in *original doc before detokenization*
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_words = len(re.split(r"\s+", doc["page"]))
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_bytes = len(doc["page"].encode("utf-8"))
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return {
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"word_perplexity": (loglikelihood, _words),
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"byte_perplexity": (loglikelihood, _bytes),
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"bits_per_byte": (loglikelihood, _bytes),
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}
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