User Guide# Get started Installing Larch Quick Start New Users Google Colab Data Data for Discrete Choice Fundamental Data Formats idco Format idca Format sparse vs dense Data Conversion Practical Data Formating in Larch Data Encoding Categorical Encoding One Hot Encoding Encoding with xarray Working with Skims Data in Larch Simple Datatrees Example idco data Example idca data Models Linear Functions Choice Models Alternatives Choices Availability Utility Functions Data Preparation Nesting Structures Parameter Estimation Overspecification Reporting Model Analysis Choice and Availability Summary Analyze Predictions Elasticity Full Probability Array Compute Engines Available Engines Setting Engines