Modern Information Retrieval：（现代信息检索）.pdf

Mo dern Information Retrieval Ricardo BaezaYates Berthier Rib eiroNeto ACM Press New York Addison-Wesley Harlow England  Reading Massachusetts Menlo Park California  New York Don Mills Ontario  Amsterdam  Bonn Sydney  Singap ore  Tokyo  Madrid San Juan  Milan  Mexico City  Seoul  Taip ei c Copyright by the ACM press A Division of the Asso ciation for Computing Machinary Inc ACM Addison Wesley Longman Limited Edinburgh Gate Harlow Essex CM JE England and Asso ciated Companies throughout the World The rights of the authors of this Work have b een asserted by them in accordance with the Copyright Designs and Patents Act All rights reserved No part of this publicati on may b e repro duced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photo copying recording or otherwise without either the prior written p ermission of the publisher or a licence p ermitting restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd Tottenham Court Road London WP HE While the publisher has made every attempt to trace all copyright owners and obtain p ermission to repro duce material in a few cases this has proved imp ossible Copyright holders of material which has not b een acknowledged are encouraged to contact the publisher Many of the designations used by manufacturers and sellers to distinguish their pro ducts are claimed as trademarks Addison Wesley Longman Limited has made every attempt to supply trade mark information ab out manufacturers and their pro ducts mentioned in this b o ok A list of the trademark designations and their owners app ears on page viii Typ eset in Computer Mo dern by Printed and b ound in the United States of America First printed ISBN X British Library CataloguinginPublication Data A catalogue record for this b o ok is