October 04, 2001. Bug fixes.

August 14, 2001. Improve edge orientation accuracy.

April 19, 2000. Version 2.2 beta. (1) Built-in discretizer is removed -- it is now an independent tool. (2) The learning algorithms are improved -- they run about 40% faster than before.

April 19, 1999. Version 2.1 beta 1. New built-in discretizer which automatically detects and discretizes continuous values.

April 5, 1999. Provide the "Skip" button at Step 5 to skip the construction process. In this way, PowerConstructor can be used merely as a BN editing and BN parameter learning tool.

Feb 22, 1999. (1) Fixed incorrect parameter exporting to Bayesian Interchange Format 0.15. (2) threshold range is now from 0.1 to 10.0.

Feb 10, 1999. New system DLLs, fixed minor bugs.

Jan 7, 1999. The BN export function now support Bayesian Interchange Format 0.15 (BIF V0.15).

Dec 12, 1998. Fixed two bugs: (1) threshold setting to < 0.7 was not effective (2) improper reading from data files whose attribute values are numbers like 0,1,2,3...