In India in 1901, a rare statistical event occurred. A confluence of interests gave a group of nascent planners new influence over the conduct of a census, with the result being a rich body of published information for Bombay and Calcutta. Useful in its day, this material now offers exceptional...

Many optimization algorithms require gradients of the model functions, but computing accurate gradients can be computationally expensive. We study the implications of using inexact gradients in the context of the multilevel optimization algorithm <Emphasis Type="SmallCaps">MG/Opt. <Emphasis Type="SmallCaps">MG/Opt recursively uses (typically...</emphasis></emphasis>