redictingmechanicalreasoningability(reasoningwiththenavy)預(yù)測機械推理能力與海軍的推理(參考版)
2025-01-15 08:40本頁面
【正文】 Graesser, 2022) Four conditions 1. Human tutors 2. Why/Atlas 3. Why/AutoTutor 4. Read control 86 College Students Measures in Spring Evaluation ? Multiple Choice Test ? Pretest and posttest (40 multiple choice questions in each) ? Essays graded by 6 physics experts ? 4 pretest and 4 posttest essays ? Expectations versus misconceptions ? Wholistic grades ? Generic principles and misconceptions (finegrained) ? Learner perceptions ? Time on Tasks Effect Sizes on Learning Gains (pretest to posttest, no differences among tutoring conditions) 0 0 . 2 5 0 . 5 0 . 7 5 1 1 . 2 5 1 . 5Exp er t Gr ad esM i sco n cep ti o nr em o valExp ectati o n sl en i en tExp ectati o n sstr i n g en tM u l ti p l e C h o i ceEffe c t s i z eFall 2022 Evaluations Conceptual Physics (Graesser, Moreno, et al., 2022) Three tutoring conditions 1. Why/AutoTutor 2. Read textbook control 3. Read nothing 63 subjects Multiple Choice Scores 0 . 40 . 50 . 60 . 70 . 8W h y / A u t o T u t o r R e a d T e x t b o o k R e a d n o t h i n gMultiple Choice Test ScorePr e te s t Po s tte s t A d j u s te d p o s tte s t20223 Evaluations Computer Literacy (Graesser, Hu, et al., 2022) 2 Tutoring Conditions 1. AutoTutor 2. Read nothing 4 Media Conditions 1. Print 2. Speech 3. Speech+Head 4. Speech+Head+Print 96 subjects Deep Reasoning Questions 0 . 20 . 30 . 40 . 50 . 6W h y / A u t o T u t o r R e a d n o t h i n gMultiple Choice Test ScorePr i n t Sp e e c h H e a d +S H e a d +S+PLATENT SEMANTIC ANALYSIS Signal Detection Analyses 0 . 00 . 10 . 20 . 30 . 40 . 50 . 60 . 70 . 80 . 3 0 0 . 4 0 0 . 5 0 0 . 6 0 0 . 6 5L SA T h r e s h o l dH i t R a teF a l s e A l a r m R a ted 39。s hands. Tutor: Right. expectation(1): expectation(2): expectation(3): misconception (1) misconception (2): As zero force is acting on it, it will have constant velocity hence it will land on his head. .51 .66 .44 Expectation1 The pumpkin has the same horizontal velocity as the runner. Expectation2 Zero force is needed to keep an object going with constant velocity. Expectation3 Vertical forces on the pumpkin do not affect its horizontal velocity. The horizontal velocity of the pumpkin is the same as the runner. The horizontal velocity of the pumpkin is the same as the runner. .99 .66 .87 Expectation1 The pumpkin has the same horizontal velocity as the runner. Expectation2 Zero force is needed to keep an object going with constant velocity. Expectation3 Vertical forces on the pumpkin do not affect its horizontal velocity. How does Why/AutoTutor select the next expectation? ? Don’t select expectations that the student has covered cosine(student answers, expectation) threshold ? Frontier learning, zone of proximal development Select highest subthreshold expectation ? Coherence Select next expectation that has highest overlap with previously covered expectation ? Pivotal expectations How does AutoTutor know which dialog move to deliver? Dialog Advancer Network (DAN) for mixedinitiative dialog 15 Fuzzy production rules Quality of the student’s assertion(s) in preceding turn Student ability level Topic coverage Student verbosity (initiative) HintPromptAssertion cycles for expected good answers Dialog Advancer Network HintPromptAssertion Cycles to Cover Good Expectations Cycle
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