Chounta Talk @HCII: Linking Dialogue with Student Modeling to Create an Enhanced Micro-adaptive...
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Transcript of Chounta Talk @HCII: Linking Dialogue with Student Modeling to Create an Enhanced Micro-adaptive...
Hello world!
Hello world I am Irene!
Postdoc @ HCII since April, 2016!
Hello world I am Irene!
PhD: Methods and tools for the evaluation of collaborative learning activities using time series (2014, University of Patras)
Greece!!!
“Linking Dialogue with Student Modeling to Create an Enhanced Micro-adaptive Tutoring
System”
University of Pittsburgh (LRDC)&
CMU (HCII)
Dialogue as a means for learning
• We aim to develop an adaptive tutorial dialogue system, guided by a student model that will support students in learning physics
Research questions• RQ1: What makes tutorial dialogues successful?
Teachers’ adapt the level of discussion to the student’s “zone of proximal development”
(Vygotsky)• RQ2: How do tutorial dialogues adapt to different
student characteristics and prior knowledge?Degree of Teacher Control (van de Pol)Contingent Tutoring (Pino-Pasternak)Cognitive Complexity (Nystrand, Graesser)
Research Objective: What makes some tutor’s help generous or stingy, easy or challenging, straightforward or “cognitively complex”?
Level of Support (LOS)
An example would be nice….RQ: What minimum acceleration must the climber have in order for the rope not to break while she is rappelling down the cliff? (You do not have to come up with a numerical answer. Just solve for "a" without any substitution of numbers.)S: a = f / mT: what's f ?S: f = mgT: just mg ? how many forces act on the climber ?S: mg + TT: is mg down or up ?S: down and T is upT: ok so now solve for a again plugging in T and mg
RQ: What minimum acceleration must the climber …….S: 500/55 kg=a m/s^2T: I don't agree - that's the acceleration that just the pull from the rope would produce (well once the units are straightened out it would be). Think a little more. What is the general rule for finding acceleration from forces?S: F/m=aT: and what is the F there?S: tension?T: No.. the F in F=ma is always the net force on the object (or group of objects). The vector sum of all the forces on the object. I prefer to say "Sum of F= ma" because it's easier to get it right. So.. if she is sliding down and the rope is just short of breaking, what is the *net* force on her?
High performer
[How] can we group the features of instructional dialogue to differentiate the “levels of support” (LOS)?
• Analyze human-to-human tutorial dialogues• Build a coding scheme to operationalize Level of
Support• Set up Tutorial Dialogue Authoring Guidelines• Adapt tutorial dialogue system to LOS
support• And then… what a great time for studies!
Work in progress!
The end.If you want to know more, get in touch!
(plus cat pictures!)
