Based on a symposium honouring the work of Allen Newell, one of the founders of artificial intelligence, cognitive science, human-computer interaction and the systematic study of computational architecture. This volume incorporates the work of research scientists, inspired by Allen's work.

This book presents a uniform framework for presenting and comparing derivations of algorithms, and applies this framework to analyze various derivations found in the literature for seven algorithms. The authors have selected algorithms for which multiple derivations exist. The framework developed abstracts from individual presentation styles and notations to focus on what was accomplished at each step of a derivation, and on the rationale for each design choice. Charts for each presentation capture this information using informal and readable conventions, while the composite graphs and...