ET-805 Open Learner Models Ramkumar.Rajendran@iitb.ac.in
From Last Class - Cohen’s Kappa Muddy Points Multi-class classifier 2
Activity - Discussion What is the difference between F1 score and Kappa? 23 7 6 44 Precision = 23/30 Recall = 23/29 F1 Score = 2/ (30/23 + 29/23) = 46/59 = 0.77 = a,b = 2/ (1/a + 1/b) Kappa = 0.65 3 (0.8375 - 0.53)/ 0.47
Activity - Every One say one What is the purpose of learner model in ITS? LM visible to the learners? - To adapt the content ( to use the data from LM in ped) - Model the learner - LM are not visible? 4
Open Learner Models Open learner models allow the learner (and/or others) to view - information about him/herself Bull, Susan, and Judy Kay. "Open learner models." In Advances in intelligent tutoring systems , pp. 301-322. Springer, Berlin, Heidelberg, 2010. Bull, Susan, and Judy Kay. "Metacognition and open learner models." In The 3rd workshop on meta-cognition and self-regulated learning in educational technologies, at ITS2008 , pp. 7-20. 2008. Bull, Susan, and Judy Kay. "Open learner models as drivers for metacognitive processes." In International handbook of metacognition and learning technologies , pp. 349-365. Springer, New York, NY, 2013. 5
Activity - TPS Think: What is the benefit/reason for OLM. Write two points (3 minutes) Pair: Copy your peer’s answers. Together arrange the reason for OLM in the order of importance (3 minutes) Share 6
Activity - Class Response - OLM motivates the student to complete the task - Learner can compare with the peers/average score of the class - Reflect - Change their cognitive strategies 7
Open Learner Models - Improves the accuracy of the learner model - Assists to plan or monitor - Right of learners to view their data - Compare their performance against domain or peers 8
Activity - Every One say one What are the drawbacks of Open Learner Model? - Student might dropout of the course - Privacy - Learner can learn how to game the system - Demotivating - 9
Open Learner Model - How much information to learner? - Only performance! - How to represent? - Text, skill meters… - Permission to the model - Can they edit, add information, share with peers, etc. 10
SQL Tutor 11
Impact of OLM in SQL Tutor - No significant difference in post-test score - However, Significant learning gains for less able students compared to control group - More able students showed more self-confidence Mitrovic, A. & Martin, B. Evaluating the Effect of Open Student Models on Self-Assessment International Journal of Artificial Intelligence in Education 17(2) (2007), 121-144. 12
Open Learner Models Examples Dr Susan Bull (Principal Author), Dr Steven Quigley & Mr Andrew Mabbott (2006) Computer-based formative assessment to promote reflection and learner autonomy, Engineering Education, 1:1, 8-18 13
OLM 14
Activity - Second Assignment Ped Logic: When the learner not able to answer the questions in the first attempt, give them example problems. 2: Demonstrates how to solve the problem 3: Ask questions about prior knowledge, difficulties etc Domain Model: Three laws, figure and equation. Example problem, Assessment question, simulation/video for demo, hints, feedback, Learner Model: 15
Before Next Class - Try CTAT, ASTUS and ASSISTMENT - We will compare these three authoring tools in next class - Do it before attending next class 16
Last Activity - Muddy Points List down - two important and - two least clear (muddy) points from today’s class - https://tinyurl.com/et8 05mp 17
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