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In the PermutationDecoder class, there is a method named score which makes a call to permutation_decode. However, this function is not implemented in the project.
def score(self, code):
"""Score is product of word scores, unigram scores, and bigram scores.
This can get very small, so we use logs and exp."""
text = permutation_decode(self.ciphertext, code)
logP = (sum([log(self.Pwords[word]) for word in words(text)]) +
sum([log(self.P1[c]) for c in text]) +
sum([log(self.P2[b]) for b in bigrams(text)]))
return exp(logP)This function was renamed in commit 516b6f2, from decode to permutation_decode. However, I could not trace even the original decode function, which first appear in commit 2bd2348.
Therefore, I do believe this function needs to be implemented in order for the method to work properly.
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