Overview
UMLCF (UnaMentis Markup Language Curriculum Format) is a JSON-based specification for educational content optimized for voice-based AI tutoring. Unlike traditional e-learning standards like SCORM or xAPI, UMLCF is built from the ground up for natural conversation.
Key Characteristics
- Voice-Native: Every text field can have TTS-optimized spoken variants
- Tutoring-First: Built for natural conversation, not LMS delivery
- Unlimited Hierarchy: Topics can nest to arbitrary depth
- Standards-Grounded: Maps to IEEE LOM, LRMI, SCORM, xAPI, QTI, CASE, Open Badges
- AI-Enrichment Ready: Designed for automated content enhancement
{
"umlcf_version": "1.0.0",
"curriculum": {
"id": "intro-calculus",
"title": "Introduction to Calculus",
"description": "A comprehensive introduction to differential calculus",
"language": "en-US",
"topics": [...]
}
}
Why UMLCF?
Existing e-learning standards were designed for click-through courses and learning management systems. They don't address the unique needs of voice-based AI tutoring:
| Need | Traditional Standards | UMLCF |
|---|---|---|
| Pronunciation guides | Not supported | Built-in spokenText variants |
| Comprehension checks | Separate quiz objects | Inline stopping points |
| Alternative explanations | Not standardized | First-class support |
| Misconception handling | Not addressed | Remediation triggers |
| Conversation flow | Page-based navigation | Natural dialogue structure |
| Depth adaptation | Fixed content | Multiple depth levels |
Document Structure
A UMLCF document has a hierarchical structure:
Voice-Native Features
UMLCF includes several features specifically designed for text-to-speech synthesis and natural voice interaction.
Spoken Text Variants
Every text field can have a spokenText variant optimized for TTS:
{
"text": "The derivative of x² is 2x.",
"spokenText": "The derivative of x squared is 2 x."
}
Pronunciation Guides
The glossary supports pronunciation hints for technical terms:
{
"glossary": [{
"term": "Euler",
"definition": "Swiss mathematician (1707-1783)",
"pronunciation": "OY-ler",
"ipa": "/ˈɔɪlər/"
}]
}
Stopping Points
Inline comprehension checks that pause the AI to verify understanding:
{
"transcript": {
"paragraphs": [
"A derivative measures the rate of change of a function.",
"Think of it as the slope of the function at any point."
],
"stoppingPoints": [{
"afterParagraph": 1,
"type": "comprehensionCheck",
"prompt": "Can you think of a real-world example where we care about rate of change?"
}]
}
}
Content Depth Levels
UMLCF supports multiple depth levels for the same content, allowing the AI tutor to adapt to the learner's needs:
High-level intuition without technical detail. Perfect for quick introductions.
Basic concepts with minimal mathematics. Suitable for beginners.
Moderate detail with equations mentioned but not derived.
In-depth coverage with derivations and proofs.
Comprehensive treatment with full mathematical rigor.
Paper-level depth with citations and cutting-edge content.
Topic Structure
Each topic contains the content and metadata for a single learning unit:
{
"id": "derivatives-introduction",
"title": "Introduction to Derivatives",
"depthLevel": "intermediate",
"estimatedDuration": "PT20M",
"learningObjectives": [
"Define the derivative as a rate of change",
"Calculate derivatives of polynomial functions",
"Interpret the derivative geometrically as slope"
],
"transcript": {
"text": "Today we're going to explore derivatives...",
"spokenText": "Today we're going to explore derivatives.",
"stoppingPoints": [...]
},
"alternativeExplanations": [{
"id": "simple-analogy",
"style": "analogy",
"content": "Think of it like a speedometer in your car..."
}, {
"id": "technical",
"style": "technical",
"content": "Formally, the derivative is defined as the limit..."
}],
"misconceptions": [{
"id": "derivative-is-tangent",
"description": "Confusing derivative with tangent line",
"triggers": ["the derivative is a line", "derivative touches the curve"],
"remediation": "The derivative gives us the slope of the tangent line..."
}],
"children": [
{ "id": "power-rule", ... },
{ "id": "chain-rule", ... }
]
}
Alternative Explanations
When a learner doesn't understand, the tutor can try a different approach:
- simple: Plain language, no jargon
- technical: Formal definitions and notation
- analogy: Real-world comparisons
- visual: Descriptions of diagrams or animations
- example: Worked examples
Misconception Handling
UMLCF allows content authors to anticipate common misunderstandings:
- Triggers: Phrases that indicate the misconception
- Remediation: Corrective explanation
- Prerequisites: Topics to review if misconception persists
Assessments
UMLCF supports various assessment types optimized for voice interaction:
Reflection Questions
Open-ended prompts for deeper thinking
{
"type": "reflection",
"prompt": "How might derivatives help
in predicting stock prices?",
"rubric": [
"Mentions rate of change",
"Connects to real-world prediction"
]
}
Verbal Quizzes
Quick knowledge checks with spoken answers
{
"type": "verbalQuiz",
"question": "What is the derivative
of x cubed?",
"expectedPatterns": [
"3 x squared",
"three x to the second"
],
"feedback": {
"correct": "Exactly right!",
"incorrect": "Remember the power rule..."
}
}
Application Problems
Real-world problem solving scenarios
{
"type": "application",
"scenario": "A ball is thrown upward...",
"questions": [
"When is the ball at its highest?",
"What is the maximum height?"
],
"hints": [
"What happens to velocity at the peak?"
]
}
Import System
UMLCF includes a pluggable import system for converting existing content:
CK-12 FlexBooks
Import K-12 EPUB textbooks from CK-12 Foundation
EPUB → UMLCF
Fast.ai Notebooks
Import Jupyter notebooks from fast.ai courses
Jupyter → UMLCF
OpenStax
Import college textbooks from OpenStax
CNXML → UMLCF
Markdown
Import structured markdown documentation
Markdown → UMLCF
AI Enrichment Pipeline
Raw imported content can be enhanced using a 7-stage LLM pipeline:
- Content Analysis: Identify structure and key concepts
- Segmentation: Break into conversational chunks
- Objective Extraction: Generate learning objectives
- Assessment Generation: Create quizzes and reflections
- Tutoring Enhancement: Add stopping points and misconceptions
- Alternative Explanations: Generate multiple explanation styles
- Knowledge Graph: Build concept relationships
Standards Mapping
UMLCF fields map to established educational technology standards for interoperability:
| Standard | Purpose | UMLCF Mapping |
|---|---|---|
| IEEE LOM | Metadata | curriculum.metadata.* |
| LRMI | Learning resources | topic.learningObjectives, topic.depthLevel |
| SCORM | Content packaging | curriculum structure, sequencing |
| xAPI | Learning analytics | assessment events, progress tracking |
| QTI | Assessments | topic.assessments.* |
| CASE | Competency frameworks | learningObjectives, masteryThresholds |
| Open Badges | Credentials | curriculum.badges, topic.achievements |
Specification Resources
- JSON Schema: 1,847 lines (Draft 2020-12)
- Human-Readable Spec: Complete documentation
- Example Curricula: Minimal and realistic examples
- Validation Tools: Schema validators and linters