Design notes

Decisions made during development, with the reasons and the alternatives considered. Each note has the same parts: the decision, why, the alternatives, and where it lives in the code.

• Principles and testing
• Diffuse initialization
• Initialization of a damped cycle
• Output coordinates of the univariate treatment
• Missing observations
• The steady state
• Estimation
• Performance
• Interfaces

The differences from statsmodels that follow from these decisions are listed in Differences from statsmodels.