Administration

• 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.

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.

• 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.

• 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.

• Tim has the smart hessians working correctly in the OpenMx trunk. Equality constraints remain an open question but are not a common case, so most functionality should be available to users.

1. Tim Brick is implementing analytical gradient calculations in the backend. To prepare for this new feature, we discussed how to revise the mxOptions() to specify which type of gradient calculation is performed.

• The group discussed the release of OpenMx 1.2.4. This binary release addresses many memory leaks that existed in previous releases of OpenMx. The remaining memory leaks seem to exist in mxAlgebra. The group discussed attempting to identify these leaks in the future using the

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