The Usborne Illustrated Elementary Science Dictionary tells it straight and simple, explaining everything children and parents need in order to understand basic level science. This book will help to lay a firm foundation for confidence and success in science. Readers can dip in for quick explanations or work through by subject to build knowledge step-by-step.

Defines the key terms and concepts of science along with useful examples and illustrations.

Vibrant and straight-talking, this illustrated dictionary will help children develop firm foundations for confidence and success in science. Contains clear definitions of over 700 key terms and concepts, with hundreds of useful examples and illustrations. Readers can dip in for quick explanations or read through by subject to grasp the essentials. A perfect accompaniment to homework, and with links to recommended science websites for further information.

A maths dictionary full of clear explanations of the key terms and concepts from Key Stage 2 and up. Each concept is explained alongside worked examples of alternative methods as well as hints, tips, shortcuts and strategies.

Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Slides and additional exercises (with solutions for lecturers) are also available through the book's supporting website to help course instructors prepare their lectures.

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