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A Data Scientist's Guide to Acquiring, Cleaning, and Managing Data in R
The only how-to guide offering a unified, systemic approach to acquiring, cleaning, and managing data in R Every experienced practitioner knows that preparing data for modeling is a painstaking, time-consuming process. Adding to the difficulty is that most modelers learn the steps involved in cleaning and managing data piecemeal, often on the fly, or they develop their own ad hoc methods. This book helps simplify their task by providing a unified, systematic approach to acquiring, modeling, manipulating, cleaning, and maintaining data in R. Starting with the very basics, data scientists Samuel E. Buttrey and Lyn R. Whitaker walk readers through the entire process. From what data looks like a...
A Cultural History of Money in Antiquity
"In a work that spans 4,500 years, 54 experts chart across six volumes how money has made "the world go round" and capture money's complexities in both substance and form. Individual volume editors ensure the cohesion of the whole and, to make it as easy as possible to use, chapter titles are identical across each of the volumes. This gives the choice of reading about a specific period in one of the volumes, or following a theme across history by reading the relevant chapter in each of the six."
Perception
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Data Science in R
Effectively Access, Transform, Manipulate, Visualize, and Reason about Data and ComputationData Science in R: A Case Studies Approach to Computational Reasoning and Problem Solving illustrates the details involved in solving real computational problems encountered in data analysis. It reveals the dynamic and iterative process by which data analysts
The Nassau Herald
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How Have Deployments During the War on Terrorism Affected Reenlistment?
The military operations in Iraq and Afghanistan have been the United States' longest military engagements since the Vietnam War and the most severe test of the all-volunteer force, with the possible exception of the Gulf War in 1991. More than 1.5 million service members were deployed between 2002 and 2007, many of them more than once, and the fast pace of deployment has been felt throughout the military. Soldiers and marines have faced a steady cycle of predeployment training and exercises, deployment itself, and postdeployment reassignment and unit regeneration. Service members not on deployment are nonetheless busy planning and supporting military operations, caring for injured service me...
