Four-model ITS architecture with inner and outer loop pedagogical model

Design · All designs
Evidence · 1 claim (1 for) · 1 study (1 design), q1 · 0 of 1 report an effect size · 1 claim rests on one study

Description

SCRIPT adopts the standard four-models ITS approach: "a Pedagogical Model, a Learner Model, a Domain Model, and a User Interface." The pedagogical model follows VanLehn's inner/outer loop differentiation: "The outer loop is responsible for task selection and the inner loop is responsible for generating feedback to steps inside programming tasks." The domain model holds tasks, a competency model (Q-matrix), and difficulty information; the learner model derives competency states from UI actions via a knowledge tracing algorithm. Models are designed to be easily replaceable and can be randomly assigned for A/B-testing.

Design Implications

Context

Requirements

• A knowledge tracing algorithm to derive learner competency from UI actions
• Task-to-skill relations and task difficulty information from the domain model for outer-loop task selection

Constraints

• Only part of the features described in the outer and inner loop schemas are implemented; the system is in alpha stage

Target Learners

• Advanced undergraduate and early postgraduate computer science students

Learning Goals

• Python programming and data science skills

Claims

• SCRIPT serves as a research platform enabling keystroke-level data collection and controlled comparison of ITS components [+W]

Related Designs

• Scrutable interfaces for generative AI: manipulable knowledge representations that let users shape outputs without understanding the model

Examples

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Key Sources

• Alina Deriyeva, Jesper Dannath, and Benjamin Paaßen. (2025). SCRIPT: Implementing an Intelligent Tutoring System for Programming in a German University Context. Artificial Intelligence in Education (Springer). https://doi.org/10.1007/978-3-031-99261-2_16

Page metadata

Field	Value
type	design
id	script-four-model-architecture-inner-outer-loop
title	Four-model ITS architecture with inner and outer loop pedagogical model
description	SCRIPT adopts the standard four-models ITS approach: "a Pedagogical Model, a Learner Model, a Domain Model, and a User Interface." The pedagogical model follows VanLehn's inner/outer loop differentiation: "The outer l...
status	review
generated	by process:settle-candidates on 2026-10-11
trust	unverified — no one has confirmed this page's content
sources	1 — alina-deriyeva-2025

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