ISO 13053-2 Six Sigma SDK

A comprehensive Go SDK implementing ISO 13053-2 Six Sigma tools and techniques following Domain-Driven Design principles.

Overview

This SDK provides a complete implementation of the Six Sigma DMAIC (Define, Measure, Analyze, Improve, Control) methodology with all 31 tools and techniques specified in ISO 13053-2:2011.

Architecture

The SDK follows the Ports-and-Adapters (Hexagonal) pattern with strict layer separation:

┌─────────────────────────────────────────────────────────┐
│                    Presentation Layer                    │
│              (CLI, HTTP API, Events)                    │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│                   Application Layer                     │
│            (Use Cases, DTOs, App Services)             │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│                     Domain Layer                        │
│  (Entities, VOs, Aggregates, Domain Services, Events) │
└─────────────────────────────────────────────────────────┘
                          ↓
┌─────────────────────────────────────────────────────────┐
│                Infrastructure Layer                     │
│       (Repositories, Adapters, External Services)       │
└─────────────────────────────────────────────────────────┘

Key Design Principles

• SOLID Principles: Strict adherence throughout the codebase
• Clean Architecture: Dependencies point inward toward the domain
• DDD Patterns: Ubiquitous language, bounded contexts, aggregates
• Hexagonal Architecture: Ports and adapters for infrastructure isolation
• CQRS-like Separation: Read and write models where beneficial
• Observability: Structured logging, metrics, and tracing built-in

Project Structure

iso13053/
├── cmd/                    # Application entry points
├── internal/
│   ├── application/        # Use cases and application services
│   │   ├── dto/
│   │   └── usecase/
│   ├── domain/             # Domain layer (pure business logic)
│   │   ├── entity/
│   │   ├── valueobject/
│   │   ├── aggregate/
│   │   ├── service/
│   │   ├── event/
│   │   ├── port/          # Repository and service interfaces
│   │   └── error/
│   ├── infrastructure/     # External concerns
│   │   ├── persistence/
│   │   ├── adapter/
│   │   ├── config/
│   │   ├── logger/
│   │   └── metrics/
│   └── presentation/      # CLI, HTTP, gRPC interfaces
│       ├── http/
│       └── cli/
├── pkg/                    # Public API
├── docs/
│   ├── adr/               # Architecture Decision Records
│   └── examples/          # Usage examples
├── GLOSSARY.md             # Ubiquitous language
├── README.md
└── go.mod

Features

DMAIC Phases Implementation

1. Define Phase

   • Project charter creation
   • SIPOC mapping
   • CTQ tree analysis
   • Stakeholder identification
   • ROI and cost accounting

2. Measure Phase

   • Data collection planning
   • Measurement System Analysis (MSA)
   • Sample size determination
   • Normality testing
   • Descriptive statistics visualization
   • Process capability analysis

3. Analyze Phase

   • Cause and effect analysis
   • Hypothesis testing
   • Regression and correlation
   • Design of experiments (DOE)
   • Waste analysis
   • Value stream mapping

4. Improve Phase

   • Solution generation
   • FMEA (Failure Mode and Effects Analysis)
   • Reliability testing
   • Prioritization matrices

5. Control Phase

   • Control charts
   • Monitoring/control plans
   • Project review
   • Continuous improvement

Quick Start

package main

import (
    "context"
    "log"

    "github.com/your-org/iso13053/pkg/sixsigma"
)

func main() {
    // Create application service
    app := sixsigma.NewApplication()

    // Create a new Six Sigma project
    project, err := app.CreateProject(context.Background(), sixsigma.CreateProjectRequest{
        Name:        "Customer Satisfaction Improvement",
        Problem:     "Customer satisfaction below target of 90%",
        Goal:        "Achieve 95% customer satisfaction",
        CTQs: []sixsigma.CTQ{
            {Name: "Response Time", Target: "24 hours", UOM: "hours"},
            {Name: "Resolution Rate", Target: "95%", UOM: "percent"},
        },
    })
    if err != nil {
        log.Fatal(err)
    }

    // Define phase
    err = app.DefineProject(context.Background(), project.ID)
    if err != nil {
        log.Fatal(err)
    }

    // Measure phase
    err = app.MeasureProcess(context.Background(), project.ID)
    if err != nil {
        log.Fatal(err)
    }

    // Analyze phase
    rootCauses, err := app.AnalyzeProcess(context.Background(), project.ID)
    if err != nil {
        log.Fatal(err)
    }

    log.Printf("Identified %d root causes", len(rootCauses))
}

Installation

go get github.com/your-org/iso13053

Documentation

• Glossary - Ubiquitous language and domain terminology
• Architecture Decision Records - Design rationale and decisions
• Examples - Usage examples and tutorials

Development

Prerequisites

• Go 1.21 or later
• Make (for build automation)

Running Tests

# Run all tests
make test

# Run tests with coverage
make test-coverage

# Run integration tests
make test-integration

Building

# Build all binaries
make build

# Build specific component
make build-cli

License

[Your License Here]

Contributing

Please read CONTRIBUTING.md for details on our code of conduct and the process for submitting pull requests.

References

• ISO 13053-2:2011 - Quantitative methods in process improvement — Six Sigma — Part 2: Tools and techniques
• ISO 13053-1:2011 - DMAIC methodology