OpenMx Developer Forums

At the developers meeting on Friday, January 18 2013 we discussed the following topics.

• Various funding opportunities for the OpenMx Project were brought up.
• Setting up an OpenMx Foundation similar to other open source projects is a possibility. The the University of Virginia Patent Foundation could help with the legal overhead for this.
• The MIDDLE project could be repackaged for NSF's EAGER call. This is largely a computer and behavioral science collaboration for cybersecurity.

At the developer's meeting on 1/11/13 we discussed the following:

• The group discussed taking a symposium to the Association for Psychological Science conference. Ryne Estabrook, Joshua Prikitin, Mike Hunter, and Tim Brick all expressed interest. The suggested symposium theme is along the lines of imagining various complex models at SEMs. This includes state space models, item response models, and spline regressions / mixture distributions. Talks should probably involve real data, but still be mostly about the methods.

At the Developers Meeting on 9/7/12 we discussed the following:

• OpenMx 1.2.5 which contains a number of bug fixes was released.
• The development and design of future integration for PPML and OpenMx. The group also discussed automatically generating random test suites, with a fixed and predictable seed, for PPML and OpenMx.
• The integration of mxFit and mxExpectation has begun in the branch directory "FitExpection" of the OpenMx repository.

At the Developers Meeting on 8/30/12 we discussed the following:

• The group discussed the mxFit and mxExpectation proposal. After ironing out some light confusion due to a few typos in the document, the group agreed that it looks very good. Implementation will start on it in the upcoming weeks.

At the Developers Meeting on 8/24/12 we discussed the following:

At the Developers Meeting on 7/27/12 we discussed the following:

• Steve will meet with Timo either next Monday/Tuesday or the following week to discuss and spec out multi-level modeling. The meetings are expected to last most of two days. Reach out to Steve if you would like to Visimeet into the meeting.

At the Developers Meeting on 7/27/12 we discussed the following:

• The issues with 'make test' discovered by Mike Hunter in last week's meeting have been resolved. The signatures for the MxMLObjective and MxAlgebraObjective did not contain a 'labelsData' argument in their genericObjFunConvert methods.
• Michael Spiegel has been implementing dependency tracking of free parameters. The first goal is to get the dependency tracking working for single-threaded models first and then for multi-threaded cases.

There is now a GIT mirror of the subversion trunk at:

https://gitorious.org/openmx/openmx

I will set up a cron job to keep this synchronized (in one direction) with the subversion repo.

Nobody has an obligation to use GIT, this is just a step towards making the source code more accessible for GIT enthusiasts.

At the Developers Meeting on 7/20/12 we discussed the following:

• Mike Hunter made some minor modifications to LISREL adding a passing test case for FIML with LISREL that has FIML rearrange the observed data columns instead of forcing the user to do so.

At the Developers Meeting on 7/13/12 we discussed the following:

• The plan to implement Multilevel modeling in OpenMx. The group will be meeting in person at MPI starting on 8/13 with additional development team members chiming in via Visimeet. Prior to the 8/13 development at least two tasks need to be completed:
  1. 1. The front end change to OpenMx that will split mx*Objective into mxFit and mxExpectation. Tim is working on sending Michael Spiegel a detailed specification for these changes.