Adults learning a new language tend to judge unconventional utterances more leniently than fluent speakers do; ratings on acceptable utterances, however, tend to align more closely with fluent speakers. This asymmetry raises a question as to whether unconventional utterances can be statistically preempted by conventional utterances for adult…

Learners of Japanese as a second language (JSL) find it difficult to learn various sentence patterns. To assist JSL learners with their study of Japanese sentence patterns (JSPs), this paper constructs a human-machine collaborative framework that combines artificial intelligence (AI) techniques with the users' active participation for Japanese…