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Welcome!

This is the top-level Wiki for the Stan project as well as the Wiki for the stan-dev/stan repository. Most of the content is aimed at developers, though some may be of interest to users. If you're not a Stan developer or thinking of becoming one, you're probably looking for:

• Stan Home Page

There are a few remaining user-facing Wiki pages that haven't been moved to the web site:

• Prior choice
• Where do I report bugs or request features?
• Frequently encountered problems
• Installing older versions

Introduction for aspiring Stan developers

See https://github.com/stan-dev/stan/wiki/Introduction-to-Stan-for-New-Developers

To-Do List

• Longer-term to-do items

Stan Meetings

• Dev meeting agenda

GitHub Repositories and Submodule Relationships

The development for the math library, language and algorithms, and interfaces are arranged into the following repositories with arrows indicating submodule inclusions.

math <- stan <- pystan
             <- rstan   <- rstanarm
             <- cmdstan <- statastan
                        <- matlabstan
                        <- stan.jl
                        <- MathematicaStan

Currently, the stan repo includes the language, the algorithms, and the service API for the interfaces. There are additional repos for tools such as the emacs mode, R plotting, R Shiny interface, web pages, etc.

Developer Process

Process

• Dev process overview
• Git process

New Functions

• Contributing new functions

Code Style

• Code quality
• Coding style and idioms
• Doxygen for API doc

Testing

• Testing framework
• Testing tools and procedures
• Googletest for unit tests
• Python unit test script
• Jenkins for continuous integration
• Continuous integration (1)
• Continuous integration (2)

Miscellaneous

• How to upgrade version numbers

Feature Specifications

Language

• Ragged arrays
• Tuple data type
• Sparse matrix data type
• Functionals and higher-order functions
• Stan 3 density notation and increments
• Parameter labeling
• Parser pedantic mode

Interfaces

• Services refactor
• CloudStan
• Logging
• Log levels and consolidated output across interfaces
• Stan 3 unified interface
• Stan C++ API refactor

I/O

• JSON I/O
• Protocol buffer I/O
• Output format

Algorithms

• Max (marginal) likelihood
• ODE models

Documentation

• Documentation reorganization

Developer Miscellany

• Compiler and OS detection in C++
• C++ 11
• Helpful tricks
• Include what you use
• Model C++ concept
• ODE integrator support
• Developer UI guidelines
• Yeti cluster at Columbia

Advertising and Fundraising

• Sell sheets