Perspectival utterances are analyzed within Situation Semantics framework. Perspectival expressions are expressions speakers use when they describe facts from certain standpoints within their environments. Uses of perspecti-val expressions have two significant characteristics , bi-directional contextual dependency, and perspectivity transfer. Relational conception of meaning and mental states c...

How can an automated tutor detect children’s off-task utterances? To answer this question, we trained SVM classifiers on a corpus of 495 children’s 36,492 computerassisted oral reading utterances. On a test set of 620 utterances by 10 held-out readers, the classifier correctly detected 88% of off-task utterances and misclassified 17% of on-task utterances as off-task. As a test of generality, w...

One of the key issues in spoken language translation is how to deal with unrestricted expressions in spontaneous utterances. This research is centered on the development of a Chinese paraphraser that automatically paraphrases utterances prior to transfer in Chinese-Japanese spoken language translation. In this paper, a pattern-based approach to paraphrasing is proposed for which only morphologi...