The images on this blog are from an algorithmic environment that I first developed about 15 years ago - rendered using a graphical system that I wrote in Java.  A “differential lattice” is a structured array of differences between two points:  e.g. the difference between the closing price of a stock on day T-0 (today) and T-6 (a week ago).  Consequently, if the closing prices are $10.10, $10.20, $10.30, $10.40, and $10.50 (today), then 0/3 is from T-0/T-3 or $10.50 less $10.20 = $0.30.  A…

I spotted an interesting book in my local library recently:  The Final Report of the Truth and Reconciliation Commission of Canada [1].  I thought to myself, our government spent considerable resources on this commission.  I should at least browse through the final report.  I flipped through the first few pages.  I found a note saying that the contents are public domain.  In this blog, I reproduce some of the contents of the report to create a setting for my discussion on operational data. …