Administration

At the Developers' Meeting on 4/27/12 we discussed the following:

At the Developers' Meeting on 4/20/12 we discussed the following:

• The group discussed the urgency for two features: (1) weighted least squares and (2) multi-level modeling. The interfaces changes to accomodate WLS and other fit functions have been decided and implementation should start soon. It appears the best time to start implementing multi-level is in August while a quorum of group members will be together.

At the Developers' Meeting on 4/13/12 we discussed the following:

• Came to consensus on implementing the implementation of changes to the interface to accomodate numerous different types of fit functions. A writeup of the proposed changes will be made available to OpenMx users. These changes have been devised to maximize future fit functionality and minimize changes to the existing interface.
• Tim Brick has identified several modifications that need to be made in the implementation of analytical gradients to achieve speedup.

At the Developers Meeting on 3/29 we discussed the following:

• Steve has installed but not tested the package R-ODBC. R-ODBC works with mysql, oracle and postgres. The group thinks this will be the best way to provide our users with relational structures in OpenMx, even for potential big data users.
• The group discussed future funding for the OpenMx project.

At the Developers' Meeting on 3/23/2012 we discussed the following:

• Mike Hunter now has LISREL with means working. Test cases which exercise this functionality are checked into the trunk of the OpenMx repository.

At the Developers' Meeting on 3/16/12 we discussed the following:

• The group discussed the recent workshop at Boulder, CO. The feedback from the returned surveys has been positive thus far.
• One participant in the workshop worked with Michael Spiegel attempting to build Open MX on a Windows 64-bit machine with access to npsol source code. Unfortunately a cryptic compilation error seemingly unrelated to OpenMx prevented building OpenMx successfully. The group plans to post to the R Mailing List and describe the error to see if any assistance is available.

At developers meeting on 3/2 we discussed the following:

• The group discussed several different strategies for Mike Hunter to employ when debugging his LISREL-related code additions to OpenMx. Specifically, it is very difficult to debug R code on Windows because of a lack of gdb support. Mike is going to install a virtual Linux distribution via Virtual Box and attempt to debug through Linux.

At developers meeting on 2/24 we discussed the following:

• The group discussed Tim Brick's progress with implementing analytic/smart gradients. The gradients save estimations but not iterations in the optimization. Michael Spiegel is going to pursue further performance testing to attempt to determine the possible speedup for various models and scripts.
• The group discussed the status of various grant proposals to fund OpenMx.

At developers meeting on 2/17 we discussed the following:

• There is now a GUI for OpenMx installation. The GUI addresses issues with the version of gcc that is provided in Mac OS 10.7.
• More LISREL code is checked in and LISREL objective functions appears close to working.

At developers meeting on 2/10 we discussed the following:

• The implementation of the LISREL objective functions looks good from the back end. Furthermore, the function has been created in a manner that allows additional new types of objective functions to be easily implemented and take advantage of the parallelization improvements in OpenMx 1.2
• The group also discussed the content of several grant proposals for funding for OpenMx.