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A Survey On Policy Search For Robotics

RRP $270.99

Policy search is a subfield of Reinforcement Learning (RL) that focuses on finding good parameters for a given policy parameterization. It is well suited tor robotics as it can cope with high-dimensional state and action spaces, which is one of the main challenges in robot learning. A Survey on Policy Search for Robotics reviews recent successes of both model-free and model-based policy search in robot learning. Model-free policy search is a general approach to learn policies based on sampled trajectories. This text classifies model-free methods based on their policy evaluation, policy update, and exploration strategies, and presents a unified view of existing algorithms. Learning a policy is often easier than learning an accurate forward model, and, hence, model-free methods are more frequently used in practice. However, for each sampled trajectory, it is necessary to interact with the robot, which can be time consuming and challenging in practice. Model-based policy search addresses this problem by first learning a simulator of the robot's dynamics from data. Subsequently, the simulator generates trajectories that are used for policy learning. For both model-free and model-based policy search methods, A Survey on Policy Search for Robotics reviews their respective properties and their applicability to robotic systems. It is an invaluable reference for anyone working in the area.


Applied Survey Methods

RRP $337.99

<b>A complete, hands-on guide to the use of statistical methods for obtaining reliable and practical survey research</b> <p> <p> <i>Applied Survey Methods</i> provides a comprehensive outline of the complete survey process, from design to publication. Filling a gap in the current literature, this one-of-a-kind book describes both the theory and practical applications of survey research with an emphasis on the statistical aspects of survey methods. <p> The book begins with a brief historic overview of survey research methods followed by a discussion that details the needed first steps for carrying out a survey, including the definition of a target population, the selection of a sampling frame, and the outline of a questionnaire with several examples that include common errors to avoid in the wording of questions. Throughout the book, the author provides an accessible discussion on the methodological problems that are associated with the survey process, outlining real data and examples while also providing insight on the future of survey research. Chapter coverage explores the various aspects of the survey process and the accompanying numerical techniques, including: <ul> <li> <div>Simple and composite sampling designs</div> <li> <div>Estimators</div> <li> <div>Data collection and editing</div> <li> <div>The quality of results</div> <li> <div>The non-response problem</div> <li> <div>Weighting adjustments and methods</div> <li> <div>Disclosure control</div> </ul> <p> The final chapter addresses the growing popularity of Web surveys, and the associated methodological problems are discussed, including solutions to common pitfalls. Exercises are provided throughout with selected answers included at the end of the book, while a related Web site features additional solutions to exercises and a downloadable demo version of the Blaise system of computer-assisted interviewing. Access to the freely available SimSam software is also available on the related Web site and provides readers with the tools needed to simulate samples from finite populations as well as visualize the effects of sample size, non-response, and the use of different estimation procedures. <p> <i>Applied Survey Methods</i> is an excellent book for courses on survey research and non-response in surveys at the upper-undergraduate and graduate levels. It is also a useful reference for practicing statisticians and survey methodologists who work in both government and private research sectors.


Bible Surveyor Handbook

RRP $18.99

The Bible is not written in chronological order. That is, if you read through the Bible from cover to cover, you'll jump around through different periods of history. And some events are repeated in different books, written by different authors, to different audiences, and for different purposes. This is one of the things that can make the Bible seem difficult or confusing. Being able to place the events you are reading about in their correct historical context helps you understand what you're reading. In 15 lessons, we're going to walk through the pages of history to gain a better perspective on how the parts of the Bible flow as one continuous storyline of what God is doing in the world. This Bible Surveyor Handbook provides an easy-to-understand overview of the entire Bible. At the end of each lesson, there are two suggested reading tracks: one for beginners who want to survey the Bible and one for intermediate students who want to explore the Bible more thoroughly. In addition, the suggested readings for each lesson may be downloaded in a convenient chart that can be printed and inserted in your Bible. You may download your free PDF of "101 Readings to Survey the Bible" or "Bible Explorer Readings" at www.ChristyBower.com in the "Downloads" section. And you never know what else you might find there.


Valuable Free Advice ! ( Book 14 )

RRP $14.99

New S U R V i V A L Information


Custer And The 1873 Yellowstone Survey

RRP $324.99

Progress on the nation's second transcontinental railroad slowed in 1873. The Northern Pacific's proposed middle-the 250 miles between present Billings and Glendive, Montana-had yet to be surveyed, and Sioux and Cheyenne Indians opposed construction through the Yellowstone Valley, the heart of their hunting grounds. A previous surveying expedition along the Yellowstone River in 1872 had resulted in the death of a prominent member of the party, the near-death of the railroad's chief engineer, the embarrassment of the U.S. Army, and a public relations and financial disaster for the Northern Pacific.

Such is the backdrop for Custer and the 1873 Yellowstone Survey, the story of the expedition told through documents selected and interpreted by historian M. John Lubetkin. The U.S. Army was determined to punish the Sioux, and the Northern Pacific desperately needed to complete its engineering work and resume construction. The expedition mounted in 1873-larger than all previous surveys combined-included "embedded" newspaper correspondents and 1,600 infantry and cavalry, the latter led by George Armstrong Custer.

Lubetkin has gathered firsthand accounts from the correspondents, diarists, and reporters who accompanied this important expedition, including that of news correspondent Samuel J. Barrows. Barrows's narrative-written in a series of dispatches to theNew York Tribune-provides a comprehensive, often humorous description of events, and his proficiency with shorthand enabled him to capture quotations and dialogue with an authenticity unmatched by other writers on the survey.

The expedition marched west from the Missouri River in mid-June of 1873 and, in three months, covered nearly 1,000, often grueling miles. Encompassing the saga of transcontinental railroading, cultural conflict on the northern plains, and an array of important Indian and Anglo-American characters, Custer and the 1873 Yellowstone Survey will fascinate Custer fans and anyone interested in the history of the American West.



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