Consequences of phonological variation for algorithmic word segmentation
Consequences of phonological variation for algorithmic word segmentation
复制标题
算法分词的语音变化的后果
DOI:
10.1016/j.cognition.2023.105401
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发表时间:
2023
期刊:
影响因子:
3.4
通讯作者:
Swingley, Daniel
中科院分区:
文献类型:
--
作者:
Beech, Caroline;Swingley, Daniel
Over the first year, infants begin to learn the words of their language. Previous work suggests that certain statistical regularities in speech could help infants segment the speech stream into words, thereby forming a proto-lexicon that could support learning of the eventual vocabulary. However, computational models of word segmentation have typically been tested using language input that is much less variable than actual speech is. We show that using actual, transcribed pronunciations rather than dictionary pronunciations of the same speech leads to worse segmentation performance across models. We also find that phonologically variable input poses serious problems for lexicon building, because even correctly segmented word forms exhibit a complex, many-to-many relationship with speakers' intended words. Many phonologically distinct word forms were actually the same intended word, and many identical transcriptions came from different intended words. The fact that previous models appear to have substantially overestimated the utility of simple statistical heuristics suggests a need to consider the formation of the lexicon in infancy differently.
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