Andrew Kramer, Prescient Healthcare Consulting, USA, "I've been using your MOR book and found it very helpful in the area of critical care research", September, 2020.
Matthieu Vignes, Massey University, New Zealand, book review: "a must-have for graduate students and any researchers willing to delve into new algorithms to solve their optimisation tasks. I was pleasantly impressed by the book's organisation and clarity, by its comprehensive and coherent topic coverage, and by its many outstanding numerical illustrations using R.'', June, 2017.
"I would like to congratulate Professor Cortez for a wonderful optimization book that uses R. ... I highly recommend this book for students, researchers, and hobbyists who are interested in implemented optimization code in R.'', December 2014.
"it is an excellent companion book for operations research or optimization method textbooks'', February 23, 2017.
Diego Ruiz, The University of Manchester, UK, book review: "This book makes a good contribution in to the literature of modern optimization. It is well written and structured.'', March, 2016.
Oliver Flasch (co-author of the rgp package): "Congratulations on the result, it was a great pleasure reading it!''.
Indir Jaganjac (via Linked-in):''R solutions code and data on your home page is excellent, especially simulated annealing and particle swarm optimization.''.
KDnuggets post on 2014/10.