James Church - Learning Haskell Data Analysis

James Church is an assistant professor of computer science at the University of West Georgia. James completed his PhD in computer science from the University of Mississippi under the advisement of Dr. Yixin Chen, with a research focus on computational geometry.

While at the University of Mississippi, he learned the skills necessary for data analysis in his side job, where he worked as a database administrator and analyst for the Marijuana Potency Monitoring Program (MPMP) led by Dr. Mahmoud ElSohly. The software written by James is used by the laboratory to store and track the chemical composition of marijuana samples. This data is provided to the United States National Institute on Drug Abuse to report marijuana potency.

The knowledge gained through his experience as an analyst for the MPMP (as well as other companies) was turned into a data analysis course for undergraduates at the University of Mississippi. This course was taught using the languages of Python and R.

James enjoys spending time with his wife, Michelle Allen, teaching, and playing board games with his friends.

I would like to thank the reviewers for testing and reshaping the code in these pages into something readable. While I made every attempt to write the best possible book on this topic, I'm sure that mistakes will be found. All mistakes are my own.

I would like to thank Michelle Allen. Your support made this book possible (Michelle drew the sketch of the airplane found in , Building a Recommendation Engine ).

I would like to thank Dr. Yixin Chen, Dr. Dawn Wilkins, Dr. Conrad Cunningham, and the faculty of computer and information science at the University of Mississippi.

Finally, thanks, mom and dad.

Joseph Adams is a keen programmer, writing in Go, Haskell, Python, Java, and a few more programming languages. His interests include the designing of programming languages, especially the functional and esoteric ones, as well as the application of unusual data structures. When not programming, he enjoys reading books ranging from topics such as philosophy to logic and advanced mathematics. Joseph also regularly attends international computer conferences and has even spoken on his Scheme to Go compiler at Free and Open Source Software Developers' European Meeting (FOSDEM).

He has a number of public repositories on GitHub that you should definitely check out by visiting http://github.com/jcla1. He also blogs quite regularly at http://jcla1.com.

William Kong studied at the University of Waterloo, Canada, and holds a bachelor of mathematics degree with a specialization in mathematical finance and a minor in statistics. He has an extensive experience in the Haskell and R programming languages and has worked as a SAS statistical programmer and modeler in the financial risk modeling industry.

William's concentrations have been mainly in the fields of optimization, statistics, and computational mathematics. His current interests lie in the practical application of novel programming paradigms and languages, such as the ever-functional Haskell and the latest newcomer, Julia.

My gratitude goes out to my parents for their support and understanding during my long hours at my computer, reviewing and testing code. I must also acknowledge instrumental help from Learn You a Haskell for Great Good: A Beginner's Guide , No Starch Press and Real World Haskell , O'Reilly Media , which were an invaluable source of knowledge throughout the editing process.

Samuli Thomasson is a Haskell enthusiast who has written software in Haskell for over 3 years, mostly as a hobby and partly for his studies and work. He has built multiple web applications and miscellaneous tools, many of which were written in Haskell. He is currently interested in functional programming, distributed systems, data science, mathematics, and philosophy. He is a student at the Department of Computer Science in the University of Helsinki, and he also works in the Finnish software industry. While pursuing his budding career, he is actively searching for the best topics to learn and specialize in.

He lives in Helsinki, Finland, with his friends. You can take a look at his website by visiting http://funktionaali.com.

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