William J. Cook

加拿大滑铁卢大学教授，美国国家工程院院士，美国数学学会、美国工业与应用数学学会以及美国运筹学和管理学研究协会会员。主要研究领域为整数规划与组合优化，曾出版多部研究旅行商问题的专著，其中与人合著的The Taveling Salesman Problem：A Computational Study获2007年Lanchester奖。

What is the shortest possible route for a travelling salesman seeking to visit each city on a list exactly once and return to his city of origin? It sounds simple enough, yet the travelling salesman problem is one of the most intensely studied puzzles in applied mathematics - and it has defied solution to this day. In this book, William Cook takes readers on a mathematical excursion, picking up the salesman's trail in the 1800s when Irish mathematician W. R. Hamilton first defined the problem, and venturing to the furthest limits of today's state-of-the-art attempts to solve it. Cook examines the origins and history of the salesman problem and explores its many important applications, from genome sequencing and designing computer processors to arranging music and hunting for planets. He looks at how computers stack up against the travelling salesman problem on a grand scale, and discusses how humans, unaided by computers, go about trying to solve the puzzle. Cook traces the salesman problem to the realms of neuroscience, psychology, and art, and he also challenges readers to tackle the problem themselves. The travelling salesman problem is - literally - a $1 million question. That's the prize the Clay Mathematics Institute is offering to anyone who can solve the problem or prove that it can't be done. "In Pursuit of the Traveling Salesman" travels to the very threshold of our understanding about the nature of complexity, and challenges you yourself to discover the solution to this captivating mathematical problem.