Pattern Grammar
Chapter 1: Pattern — Definition and Types
Definition
A pattern is a recognizable, reusable, and compressed representation of knowledge that serves as an index to an underlying knowledge base.
A pattern does not contain all the knowledge of a domain. It points to the relevant knowledge, enabling understanding, judgment, and action.
Types of Patterns
1. Gateway Pattern
Pattern: Maps a domain as a complete system to reveal its structure and purpose.
Example: Mapping the healthcare system by identifying patients, hospitals, doctors, diseases, diagnostics, treatments, and their interactions.
2. Entity Pattern
Pattern: Identifies, defines, and organizes the fundamental building blocks of a domain.
Example: In geometry, identifying points, lines, angles, triangles, circles, and polygons as the key entities.
3. Teach Pattern
Pattern: Explains a domain through simple language, stories, analogies, and examples to build intuitive understanding.
Example: Explaining electricity as water flowing through pipes to help a beginner understand electric current.
4. Mental Model Pattern
Pattern: Reveals the single unifying idea that explains how an entire domain works.
Example: Viewing software engineering as the transformation of user requirements into reliable software systems.
5. Recognition Pattern
Pattern: Identifies recurring situations by matching them with previously known patterns.
Example: A physician recognizing the pattern of fever, cough, and chest pain as suggestive of pneumonia.
6. Classification Pattern
Pattern: Organizes entities, ideas, or situations into meaningful categories.
Example: Classifying vehicles as electric, hybrid, petrol, or diesel.
7. Comparison Pattern
Pattern: Examines similarities, differences, strengths, weaknesses, and trade-offs between alternatives.
Example: Comparing electric vehicles with petrol vehicles in terms of cost, maintenance, emissions, and range.
8. Relationship Pattern
Pattern: Explains how entities influence, depend upon, and interact with one another.
Example: Explaining how battery capacity influences driving range in an electric vehicle.
9. Sequence Pattern
Pattern: Arranges activities, events, or processes into their logical order.
Example: Software development follows the sequence: requirements → design → coding → testing → deployment.
10. Decision Pattern
Pattern: Evaluates available alternatives and selects the most appropriate course of action.
Example: Choosing between Retrieval-Augmented Generation (RAG) and fine-tuning for an enterprise AI application.
11. Prediction Pattern
Pattern: Infers likely future outcomes from existing patterns and available evidence.
Example: Predicting increased adoption of electric vehicles as battery costs continue to decrease.
12. Creation Pattern
Pattern: Combines knowledge and existing patterns to design, build, or solve something new.
Example: Designing an AI-powered customer support assistant by combining language models, company knowledge, and business workflows.
13. Evaluation Pattern
Pattern: Assesses the quality, effectiveness, or success of a result against defined objectives.
Example: Evaluating an AI chatbot based on accuracy, response quality, user satisfaction, cost, and safety.
14. Reflection Pattern
Pattern: Extracts reusable knowledge and patterns from experience for future application.
Example: After completing a project, identifying lessons learned and documenting best practices for future projects.
Fundamental Principle
Knowledge is stored. Patterns are the indexes to knowledge. AI retrieves patterns. Humans apply judgment and take action.
Pattern Grammar provides a universal language for learning and thinking. Just as grammar organizes language into rules and structures, Pattern Grammar organizes knowledge into reusable patterns that can be applied across every discipline.
