KIOSAlignmentConfig Class Reference

Per-call configuration for a text-alignment operation. More...

#include <KIOSTextAligner.h>

Properties
float	insertCost
	Cost of inserting a recognized token (one not present in the reference).
float	deleteCost
	Cost of deleting a reference token (one not present in the recognized text).
float	substituteCost
	Cost of substituting one token for another.
BOOL	detectRepetitions
	When YES, the result populates repetitionRefIndices for words the reader appears to have stuttered or repeated.
BOOL	filterNoiseTokens
	When YES, recognized tokens whose text begins with '<' (e.g. <SPOKEN_NOISE>, <UNK>) are dropped before alignment.

Detailed Description

Per-call configuration for a text-alignment operation.

Defaults reproduce classic Levenshtein word edit distance with unit costs and noise-token filtering enabled. For most oral-reading and WER use cases the defaults are appropriate.

Property Documentation

deleteCost

- (float) deleteCost

readwritenonatomicassign

Cost of deleting a reference token (one not present in the recognized text).

Default: 1.0.

detectRepetitions

- (BOOL) detectRepetitions

readwritenonatomicassign

When YES, the result populates repetitionRefIndices for words the reader appears to have stuttered or repeated.

A repetition is reported when two adjacent recognized tokens are identical but only one of the pair was matched against the reference. Default: NO.

filterNoiseTokens

- (BOOL) filterNoiseTokens

readwritenonatomicassign

When YES, recognized tokens whose text begins with '<' (e.g. <SPOKEN_NOISE>, <UNK>) are dropped before alignment.

Leave on when the recognized text comes from an ASR result; turn off when aligning plain reference vs. plain hypothesis. Default: YES.

insertCost

- (float) insertCost

readwritenonatomicassign

Cost of inserting a recognized token (one not present in the reference).

Default: 1.0.

substituteCost

- (float) substituteCost

readwritenonatomicassign

Cost of substituting one token for another.

When substituteCost > insertCost + deleteCost the aligner degenerates to LCS-style behavior (no substitutions emitted). Default: 1.0.

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The documentation for this class was generated from the following file:

• KeenASR/KIOSTextAligner.h