IRE The pragmatics of information retrieval experimentation chapter Jean M. Tague Butterworth & Company Karen Sparck Jones All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, including photocopying and recording, without the written permission of the copyright holder, application for which should be addressed to the Publishers. Such written permission must also be obtained before any part of this publication is stored in a retrieval system of any nature. 0 0.9 0.8 0.7 0.6 0. [OCRerr] 0.2 0.1 C 89 T .4 (a) I I I I ifi 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Reca I 0 LI) U L CL 0.9 0.8 0.[OCRerr] 0.6 0.5 0.4 0.3 0.2 O .[OCRerr] 0 ¼[OCRerr] ½ (b) I I A 0.1 b.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Recall