Shedding Light on the Hidden Web
نویسندگان
چکیده
The terms Hidden Web, Deep Web and Invisible Web describe those resources on the Web that are in some way unreachable by search engines, and are potentially unusable to other Web systems such as annotation services. These hidden resources make up a significant part of the current Web. We provide firm definitions of the ways in which information can be “hidden”, and discuss the challenges that face those working with annotation in the Hidden Web. We do not attempt to provide solutions for these challenges, but a clarification of the terms involved is certainly a step in the right direction. Copyright c © 2004, University of Manchester. All rights reserved. Reproduction (electronically or by other means) of all or part of this work is permitted for educational or research purposes only, on condition that no commercial gain is involved. Recent preprints issued by the Department of Computer Science, Manchester University, are available on WWW via URL http://www.cs.man.ac.uk/preprints/index.html or by ftp from ftp.cs.man.ac.uk in the directory pub/preprints. Melandra Limited, Greenheys Centre, 10 Pencroft Way, Manchester, M15 6JJ Sun Microsystems Laboratories Europe, Sun Microsystems Ltd, Sun House, 306 Cambridge Science Park, Milton Road, Cambridge, CB4 0WG
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