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  1. Proceedings of the 8th annual ACM international workshop on Web information and data management (WIDM '06)
  2. Lazy preservation: reconstructing websites by crawling the crawlers
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The power of structured data on the web
Bridging relational database history and the web: the XML approach
Ranking target objects of navigational queries
Identifying redundant search engines in a very large scale metasearch engine context
An architecture for creating collaborative semantically capable scientific data sharing infrastructures
Efficient evaluation of n-ary conjunctive queries over trees and graphs
Coarse-grained classification of web sites by their structural properties
Pushing task relevant web links down to the desktop
The GEON portal: accelerating knowledge discovery in the geosciences
SRI: exploiting semantic information for effective query routing in a PDMS
Efficient, automatic web resource harvesting
Lazy preservation: reconstructing websites by crawling the crawlers

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Lazy preservation: reconstructing websites by crawling the crawlers

Content Provider ACM Digital Library
Author Nelson, Michael L. McCown, Frank Smith, Joan A.
Abstract Backup of websites is often not considered until after a catastrophic event has occurred to either the website or its webmaster. We introduce "lazy preservation" -- digital preservation performed as a result of the normal operation of web crawlers and caches. Lazy preservation is especially suitable for third parties; for example, a teacher reconstructing a missing website used in previous classes. We evaluate the effectiveness of lazy preservation by reconstructing 24 websites of varying sizes and composition using Warrick, a web-repository crawler. Because of varying levels of completeness in any one repository, our reconstructions sampled from four different web repositories: Google (44%), MSN (30%), Internet Archive (19%) and Yahoo (7%). We also measured the time required for web resources to be discovered and cached (10-103 days) as well as how long they remained in cache after deletion (7-61 days).
Starting Page 67
Ending Page 74
Page Count 8
File Format PDF
ISBN 1595935258
DOI 10.1145/1183550.1183564
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2006-11-10
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Cached resources Search engine Digital preservation Recovery
Content Type Text
Resource Type Article
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