ET-805 Designing ITS -I MVC & CAILE for Betty - - PowerPoint PPT Presentation

ET-805 Designing ITS -I MVC & CAILE for Betty

Ramkumar.Rajendran@iitb.ac.in

From Last Class

• Pedagogy Module
• Adaptation Logic of Mindspark

Muddy Points

• Adaptation Logic of other ITS for comparison
• After Mid-sem
• Predicting Student skill in next problem based on current

problem

• How to substitute k and u values in BKT.
• Homework. Might be a question in Mid-term

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Activity - PI

Using the above formula and below given values predict a student U’s skill on next concept “K” based on the student’s (U’s) P(Learning a Skill K) = 0.7, Probability(Guessing for the Skill K) = 0.3 and P(Slipping in Skill) = 0.1

a) 0.28 b) 0.72 c) 0.84 d) Insufficient Data Vote Pair Vote Again

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Activity - PI

Using the above formula and below given values predict a student U’s skill on next concept “K” based on the student’s (U’s) P(Learning a Skill K) = 0.7, Probability(Guessing for the Skill K) = 0.3 and P(Slipping in Skill) = 0.1

a) 0.28 b) 0.72 c) 0.84 d) Insufficient Data

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Activity - Open Discussion

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Let’s assume that we are developing an ITS. Ignoring the ITS components that is Domain Module, Ped Module, and Learner Module, discuss what we need to develop/code the ITS. For example, a database to store the user’s interaction, ... List of Components:

• Database, GUI, A program/algorithm to validate user

input, program to scaffold, task manager, program to respond user input, program to inform logic of flow,

Categorize

User : Front End - Screen, user input Program or Algorithm: A program/algorithm to validate user input, program to scaffold, program to respond user input Data - Database Controller - program to inform logic of flow,

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Model View Controllers

• Most commonly used Software architecture pattern for

developing a user interface

• It divides the application development task into three

interconnected parts to allow

• Parallel development and code reuse.

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Model View Controller

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Picture Credit: Wikipedia

MVC with Steps

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Picture Credit: https://blog.cloudboost.io/what-is-model-view-controller-124a9942246

MVC in Daily life (from Web)

• A customer walks into a restaurant
• A waiter gives her the menu card
• The Customer places the order
• The waiter takes the order
• The waiter transfers the order to Chef
• Chef prepares the food using the ingredients from storage

place (fridge)

• Waiter delivers the food to the customer in a tray

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Activity - TPS

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Think In the previous scenario categorize the steps to eat in a restaurant using MVC (3 minutes) Pair and make sure the categorization is similar with your neighbor (3 minutes) Share (3 minutes)

Activity - Class Response

Model - Chef Database - fridge Controller - Waiter Customer - User

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Activity - TPS

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Think Based on previous scenario list down similar steps involved in an ITS. (3 minutes) Share (4 minutes) Class Response: Controller -

Betty’s Brain Interaction

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Segedy, J.R. (2014). Adaptive Scaffolds in Open-Ended Computer-Based Learning Environments (Doctoral dissertation). Department of EECS, Vanderbilt University, Nashville, TN.

Betty’s Brain Interaction

Two Key Functions:

• Forcing all the changes to propagate through the event bus -

Event logger

• Both User action and agent action are processed via same

system

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CAILE Architecture

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CAILE Architecture

• Choice-Adaptive Intelligent Learning Environment (CAILE)

software architecture

• Flexible architecture for building CBLEs.
• Two primary layers:
• Modules - Independent functional components organized into

a set of controllers (MVC)

• Service Providers - Neither views nor controllers
• The services provided by both modules and SPs are available

to and shared by all other modules and SPs in the system.

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Five Modules in Betty’s Brain

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Five Modules in Betty’s Brain

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Five Modules in Betty’s Brain

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Five Modules in Betty’s Brain

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Five Modules in Betty’s Brain

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Next Class

• Demo of Betty’s Brain Architecture

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Last Activity - Muddy Points

List down

• two important and
• two least clear

(muddy) points from today’s class

• https://tinyurl.com/et8

05mp

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