
Changes from version 0.6

- gbm.perf, the argument named best.iter.calc has been renamed
"method" for greater simplicity

- all entries in the design matrix are now coerced to doubles
(Thanks to Bonnie Ghosh)

- now checks that all predictors are either numeric, ordinal, or
factor

- summary.gbm now reports the correct relative influence when some 
variables do not enter the model. (Thanks to Hugh Chipman)


Planned future changes
1. (2/18/2003) Add weighted median functionality to Laplace

2. (2/18/2003) Automate the fitting process, ie, selecting
shrinkage and number of iterations

3. (2/18/2003) Add overlay factor*continuous predictor plot as an
option rather than lattice plots

4. (2/18/2003) Add multinomial and ordered logistic regression
procedures


Thanks to

RAND for sponsoring the development of this software through
statistical methods funding

Dan McCaffrey for testing and evangelizing the utility of this
program.

Bonnie Ghosh for finding bugs.

Arnab Mukherji for testing and suggesting new features.

Daniela Golinelli for finding bugs and marrying me.

Andrew Morral for suggesting improvements and finding new
applications of the method in the evaluation of drug treatment
programs.

Katrin Hambarsoomians for finding bugs.

Hugh Chipman for finding bugs.
