Align

This tool to calculate the word error rate (WER). The word error rate is defined as

\(WER = \frac{\text{#insertions} + \text{#deletions} + \text{#substitutions}}{\text{Words in the reference}}\)

$ asr align --help
usage: asr align [-h] [-s1 S1] [-s2 S2]

align

optional arguments:
  -h, --help  show this help message and exit
  -s1 S1      sequence 1
  -s2 S2      sequence 2

Calculate the word error rate (WER) of two word sequences.

asr.align.calculate_wer(reference, hypothesis)

Calculation of WER with Levenshtein distance. Works only for iterables up to 254 elements (uint8). O(nm) time and space complexity.

>>> calculate_wer("who is there".split(), "is there".split())
1
>>> calculate_wer("who is there".split(), "".split())
3
>>> calculate_wer("".split(), "who is there".split())
3

asr.align.get_parser()

Get a parser object