My slides for the IDA’2010 conference are here:russ2010ida-slides.pdf. My upcoming talk at the University of Waterloo will be meandering along the same lines. The respective publication for the IDA conference is here: Spatial Variable Importance Assessment for Yield Prediction in Precision Agriculture. There’s also the Springerlink URL: http://www.springerlink.com/content/p63pn0561u18r34w/.