Cohesion and Learning in a Tutorial Spoken Dialog System


Issue 2: Is there an aptitude/treatment interaction?



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tarix15.06.2023
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cohesion3

Issue 2: Is there an aptitude/treatment interaction?

    • Why there might be:
      • McNamara & Kintsch
    • How we test it:
      • Mean pre-test split
        • All students
        • Above-mean pretest students (“high” pre-testers)
        • Below-mean pretest students (“low” pre-testers)

Issue 3: Is interactivity Important?

  • Why it might be:
    • Chi et al. (01)
    • Litman & Forbes-Riley (05)
      • Learning correlated with both:
        • student utterances that display reasoning
        • tutor questions that require reasoning
  • How we test it:

Issue 4: What other processing steps help?

  • Tried several on training corpus:
    • Removing stop words
    • N-turn spans
    • Selecting “substantive” turns
    • TF-IDF normalization
    • Turn-normalized counts
      • (Raw tie count / # of turns in dialog)
  • Found final options on training corpus:
  • Tested options on new corpus

Where did the corpora come from?


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