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changelog.txt
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Version 1.6
Change Log
* Slight speed increase in MD routines
* Fixed occasional hang (hopefully)
* Internal Changes to improve stability
* Initial parameter step value (parameter temperature) can now be selected
* SLD can now be used instead of normalized electron density
* Added data patching
* Graphing fixes
Version 1.5
Change Log
* versions 1.3 and 1.4 were internal
* Updated levmar to version 2.2 - several very small bugs fixed
* Updated itextsharp to version 4.0.8
* Added ED graph for model dependent fitting
* Fixed pdf report and added more information for model dependent fits
* Mastergraph now has publication quality graphs with transparency for overlaying
* default points per Angstrom is now 3
* default amount of subphase length is 40
* default fitness function is log error
* Fixed incorrect absorption calculation
* added option for debugging
* added adaptive ability to STUN to the GUI
* separated STUN and SA dialogs
* choice of tunneling algorithms
* numerous small bug fixes
* Can resume between runs
* Improved error handling
* Fitting from previous versions cannot be resumed.
* calculation ~ 21% faster for absorbing films and ~ 12% faster for non absorbing under standard parameters
* larger super and subphases for very rough films affect the calculation less
* Fixed SLD calculator error with using bulk densities (thanks Luka)
* Added XR only option to reject fits with negative electron density
* Negative points in the data file are now ignored, and those files now load
* Fixed problem with loading the data files when there are extra lines at the end
* fitness scores are now divided by the number of data points
* fixed localization issues. Now our European, South American, and Indian friends can fit data without problems
* fixed graph issues
* cleaned up statistical error issues
* cleaned up file names and locations. Instead of deleting old fits, they are moved to a new folder
Version 1.2 - 10/31/2007
Change Log
* IMPORTANT - You will not be able to resume runs created with previous versions.
* Renamed the project to StochFit. This better captures the nature of the algorithms.
* Implemented consistent Chi square values throughout StochFit. Previously the Chi square reported in the model independent screen was the fit function, which was not necessarily a Chi square . The reflectivity Chi square values are reduced Chi squares of R/Rf. The Chi square of the electron density profile fit is just a least squares difference as there are no errors in that case.
* Improved graph zoom behavior when errors are very large.
* More options for the objective function in the model independent fit.
* Updated pdf and graphing library libraries.
* Added Simulated Annealing and Stochastic Tunneling optimization algorithms for model independent fits. These are slower but more effective for finding alternate solutions
* Small optimization algorithm improvements including the ability to easily resume from annealing
* Increased speed of the model independent algorithm (depending on options and hardware) between 15 and 300 percent.
* Better random number generation and behavior.
* Fixed stochastic model dependent fit crash on multi processor systems.
* Improved cutting and pasting of graphs
Version 1.1 - 10/1/2007
Change Log
* Fixed pdf report parameters to be consistent
* Added Levenberg-Marquardt fit convergence details
* Fixed error estimation problem
* Model dependent box fit with constraints is now available
Version 1.0 - Initial Release