This is the code for the Tetrad Project; an introduction can be found here: www.phil.cmu.edu/tetrad This is a Maven port of an existing Ant-based project that's been under development for many years in the Department of Philosophy at Carnegie Mellon University. For istructions on how to set this project up in IntelliJ IDEA, see the Wiki. Alternatively, you can run the lifecycle package target and launch the ejar that is built in the target directory, using the call java -jar *-launch.jar The project contains fairly well-developed code in these packages: tetrad tetradapp The tetrad package contains the "model" code; the tetradapp package contains the "view" (GUI) code. Contributions are welcome; we will handle these via the issue tracker and the GitHub pull-request procedure. As usual, please fork the repository if you'd like to work on it. Comments are also welcome. We will try to straighten out our websites soon. Sorry. Still in the process of cleaning up the code for general use, sorry. Some files may be removed in the process. IntelliJ IDEA files were removed from the repository; if these got removed in your fork, just set up the IntelliJ project again (without cloning it again, that is). See Wiki.