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Much has been written about the historic nature of the Obama campaign. The multi-year, multi-billion dollar operation elected the nation's first black president, raised and spent more money than any other election effort in history, and built the most sophisticated voter targeting technology ever before used on a national campaign. What is missing from most accounts of the campaign is an understanding of how Obama for America recruited, motivated, developed, and managed its formidable army of 2.2 million volunteers. Unlike previous field campaigns that drew their power from staff,...

This book is devoted to five main principles of algorithm design: divide and conquer, greedy algorithms, thinning, dynamic programming, and exhaustive search. These principles are presented using Haskell, a purely functional language, leading to simpler explanations and shorter programs than would be obtained with imperative languages. Carefully selected examples, both new and standard, reveal the commonalities and highlight the differences between algorithms. The algorithm developments use equational reasoning where applicable, clarifying the applicability conditions and correctness...