RAG Evaluation

Rag Evaluation

Skill Profile

(Select at least one profile to enable specific modules)

• DevOps
• Backend
• Frontend
• AI-RAG
• Security Critical

Overview

Comprehensive guide to evaluating Retrieval-Augmented Generation systems, including retrieval metrics, generation quality, and end-to-end evaluation.

Why This Matters

• Quality Assurance: Ensures RAG systems produce accurate, relevant answers
• Performance Monitoring: Tracks retrieval and generation quality over time
• Optimization: Identifies areas for improvement in RAG pipelines
• Benchmarking: Enables comparison between different RAG implementations
• Trust: Builds confidence in RAG system outputs

Core Concepts & Rules

1. Core Principles

• Follow established patterns and conventions
• Maintain consistency across codebase
• Document decisions and trade-offs

2. Implementation Guidelines

• Start with the simplest viable solution
• Iterate based on feedback and requirements
• Test thoroughly before deployment

Inputs / Outputs / Contracts

• Inputs:
  • Query dataset (questions with relevant documents and ground truth answers)
  • RAG system components (retriever, generator, optional reranker)
  • Evaluation configuration (K values, metrics to compute)
• Entry Conditions:
  • RAG system is deployed and accessible
  • Vector database is populated with documents
  • Query dataset with ground truth is available
  • LLM client for evaluation is configured
• Outputs:
  • Retrieval metrics (precision@K, recall@K, MRR, NDCG, MAP)
  • Generation metrics (faithfulness, relevance, coherence, factuality)
  • End-to-end metrics (answer correctness, completeness)
  • Evaluation report with visualizations
• Artifacts Required (Deliverables):
  • Evaluation results JSON
  • Metrics dashboard
  • Comparison report (if comparing systems)
  • Benchmark dataset
• Acceptance Evidence:
  • All metrics computed successfully
  • Results saved to file/database
  • Dashboard displays metrics correctly
  • Report generated with analysis
• Success Criteria:
  • Retrieval precision@5 > 80%
  • Generation faithfulness > 0.9
  • End-to-end accuracy > 85%
  • Evaluation completes within expected time

Skill Composition

• Depends on:
  • 52-ai-evaluation/ground-truth-management
  • 52-ai-evaluation/llm-judge-patterns
• Compatible with:
  • 52-ai-evaluation/offline-vs-online-eval
  • 52-ai-evaluation/regression-benchmarks
• Conflicts with: None
• Related Skills:
  • 52-ai-evaluation/ground-truth-management
  • 52-ai-evaluation/llm-judge-patterns
  • 52-ai-evaluation/offline-vs-online-eval
  • 52-ai-evaluation/regression-benchmarks

Quick Start / Implementation Example

1. Review requirements and constraints
2. Set up development environment
3. Implement core functionality following patterns
4. Write tests for critical paths
5. Run tests and fix issues
6. Document any deviations or decisions

# Example implementation following best practices
def example_function():
    # Your implementation here
    pass

Assumptions / Constraints / Non-goals

• Assumptions:
  • Development environment is properly configured
  • Required dependencies are available
  • Team has basic understanding of domain
• Constraints:
  • Must follow existing codebase conventions
  • Time and resource limitations
  • Compatibility requirements
• Non-goals:
  • This skill does not cover edge cases outside scope
  • Not a replacement for formal training

Compatibility & Prerequisites

• Supported Versions:
  • Python 3.8+
  • Node.js 16+
  • Modern browsers (Chrome, Firefox, Safari, Edge)
• Required AI Tools:
  • Code editor (VS Code recommended)
  • Testing framework appropriate for language
  • Version control (Git)
• Dependencies:
  • Language-specific package manager
  • Build tools
  • Testing libraries
• Environment Setup:
  • .env.example keys: API_KEY, DATABASE_URL (no values)

Test Scenario Matrix (QA Strategy)

Technical Guardrails & Security Threat Model

1. Security & Privacy (Threat Model)

• Top Threats: Injection attacks, authentication bypass, data exposure

• Data Handling: Sanitize all user inputs to prevent Injection attacks. Never log raw PII
• Secrets Management: No hardcoded API keys. Use Env Vars/Secrets Manager
• Authorization: Validate user permissions before state changes

2. Performance & Resources

• Execution Efficiency: Consider time complexity for algorithms
• Memory Management: Use streams/pagination for large data
• Resource Cleanup: Close DB connections/file handlers in finally blocks

3. Architecture & Scalability

• Design Pattern: Follow SOLID principles, use Dependency Injection
• Modularity: Decouple logic from UI/Frameworks

4. Observability & Reliability

• Logging Standards: Structured JSON, include trace IDs request_id
• Metrics: Track error_rate, latency, queue_depth
• Error Handling: Standardized error codes, no bare except
• Observability Artifacts:
  • Log Fields: timestamp, level, message, request_id
  • Metrics: request_count, error_count, response_time
  • Dashboards/Alerts: High Error Rate > 5%

Agent Directives & Error Recovery

(ข้อกำหนดสำหรับ AI Agent ในการคิดและแก้ปัญหาเมื่อเกิดข้อผิดพลาด)

• Thinking Process: Analyze root cause before fixing. Do not brute-force.
• Fallback Strategy: Stop after 3 failed test attempts. Output root cause and ask for human intervention/clarification.
• Self-Review: Check against Guardrails & Anti-patterns before finalizing.
• Output Constraints: Output ONLY the modified code block. Do not explain unless asked.

Definition of Done (DoD) Checklist

• Tests passed + coverage met
• Lint/Typecheck passed
• Logging/Metrics/Trace implemented
• Security checks passed
• Documentation/Changelog updated
• Accessibility/Performance requirements met (if frontend)

Anti-patterns / Pitfalls

• ⛔ Don't: Log PII, catch-all exception, N+1 queries
• ⚠️ Watch out for: Common symptoms and quick fixes
• 💡 Instead: Use proper error handling, pagination, and logging

Reference Links & Examples

• Internal documentation and examples
• Official documentation and best practices
• Community resources and discussions

Versioning & Changelog

• Version: 1.0.0
• Changelog:
  • 2026-02-22: Initial version with complete template structure

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