This second edition of a well-received text, with 20 new chapters, presents a coherent and unified repository of recommender systems’ major concepts, theories, methodologies, trends, and challenges. A variety of real-world applications and detailed case studies are included. In addition to wholesale revision of the existing chapters, this edition includes new topics including: decision making and recommender systems, reciprocal recommender systems, recommender systems in social networks, mobile recommender systems, explanations for recommender systems, music recommender systems, cross-domain recommendations, privacy in recommender systems, and semantic-based recommender systems. This multi-disciplinary handbook involves world-wide experts from diverse fields such as artificial intelligence, human-computer interaction, information retrieval, data mining, mathematics, statistics, adaptive user interfaces, decision support systems, psychology, marketing, and consumer behavior. Theoreticians and practitioners from these fields will find this reference to be an invaluable source of ideas, methods and techniques for developing more efficient, cost-effective and accurate recommender systems.
If you want to learn how to program, working with Python is an excellent way to start. This hands-on guide takes you through the language a step at a time, beginning with basic programming concepts before moving on to functions, recursion, data structures, and object-oriented design. This second edition and its supporting code have been updated for Python 3. Through exercises in each chapter, youâ??ll try out programming concepts as you learn them. Think Python is ideal for students at the high school or college level, as well as self-learners, home-schooled students, and professionals who need to learn programming basics. Beginners just getting their feet wet will learn how to start with Python in a browser. Start with the basics, including language syntax and semantics Get a clear definition of each programming concept Learn about values, variables, statements, functions, and data structures in a logical progression Discover how to work with files and databases Understand objects, methods, and object-oriented programming Use debugging techniques to fix syntax, runtime, and semantic errors Explore interface design, data structures, and GUI-based programs through case studies
An understanding of language arts concepts is key to strong communication skillsÑthe foundation of success across disciplines. Spectrum Language Arts for grade 7 provides focused practice and creative activities to help your child master parts of speech, vocabulary, sentence types, and grammar. --This comprehensive workbook doesnÕt stop with focused practiceÐit encourages children to explore their creative sides by challenging them with thought-provoking writing projects. Aligned to current state standards, Spectrum Language Arts for grade 7 includes an answer key and a supplemental WriterÕs Guide to reinforce grammar and language arts concepts. With the help of Spectrum, your child will build the language arts skills necessary for a lifetime of success.
In ancient Rome there lived a humble man named Valentine. He was a physician, but he was also a Christian priest whose life and freedom were in constant danger in a city of people who believed in many gods, not just one. One day a jailer from the emperor¿s prison appeared at Valentine¿s door with his small child, a girl who was blind. Knowing the difficulty of curing blindness, Valentine vowed to do his best, and over the weeks of treatment and prayer the three became fast friends. Here, accompanied by Sabuda¿s full-color mosaics evoking the time period in which the story takes place, is the story of a man whose goodness and faith brought about a miracle, and whose name lives on in one of our most celebrated holidays. Reinforced binding.
"Readers who choose the book for the attraction of Navajo code talking and the heat of battle will come away with more than they ever expected to find."—Booklist, starred review Throughout World War II, in the conflict fought against Japan, Navajo code talkers were a crucial part of the U.S. effort, sending messages back and forth in an unbreakable code that used their native language. They braved some of the heaviest fighting of the war, and with their code, they saved countless American lives. Yet their story remained classified for more than twenty years. But now Joseph Bruchac brings their stories to life for young adults through the riveting fictional tale of Ned Begay, a sixteen-year-old Navajo boy who becomes a code talker. His grueling journey is eye-opening and inspiring. This deeply affecting novel honors all of those young men, like Ned, who dared to serve, and it honors the culture and language of the Navajo Indians. An ALA Best Book for Young Adults "Nonsensational and accurate, Bruchac's tale is quietly inspiring..."—School Library Journal
The Story of Civilization reflects a new emphasis in presenting the history of the world as a thrilling and compelling narrative. Within each chapter, children will encounter short stories that place them directly in the shoes of historical figures, both famous and ordinary, as they live through legendary battles and invasions, philosophical debates, the construction of architectural wonders, the discovery of new inventions and sciences, and the exploration of the world.
Born to a family of farmers, Lincoln stood out from an early age—literally! (He was six feet four inches tall.) As sixteenth President of the United States, he guided the nation through the Civil War and saw the abolition of slavery. But Lincoln was tragically shot one night at Ford’s Theater—the first President to be assassinated. Over 100 black-and-white illustrations and maps are included.
Everything educators need to know to enhance learning for ESLstudents This unique teacher time-saver includes scores of helpful,practical lists that may be reproduced for classroom use orreferred to in the development of instructional materials andlessons. The material contained in this book helps K-12 teachersreinforce and enhance the learning of grammar, vocabulary,pronunciation, and writing skills in ESL students of all abilitylevels. For easy use and quick access, the lists are printed in aformat that can be photocopied as many times as required. Acomplete, thoroughly updated glossary at the end provides anindispensable guide to the specialized language of ESLinstruction.
This book consists of 75 utterly original and totally tantalizing brain teasers from master puzzler George J. Summers. He brings out fascinating challenges in situations as common as a game of tic-tac-toe or tennis or as strange as a land of habitual Truth tellers and Liars. These puzzles and teasers are constructed with clues, helpful solution and detailed answers that show you step-by-step how a teaser or a puzzle is unraveled.