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Congressman William Dawson served Chicago's Black community during the political awakening that culminated in the civil rights movement of the 1960s. His career reflects trends of the era: shifting party alliances, a growing Black presence in national politics, and changing tactics in the struggle for equality and civil rights.

Class-tested and coherent, this groundbreaking new textbook teaches web-era information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. Written from a computer science perspective by three leading experts in the field, 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...