Lybarger, Kathryn

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University of Kentucky

University of KentuckyUKnowledgeLibrary Presentations University of Kentucky Libraries5-17-2013Z-Books: Hunting Down Zombie Ebooks Hidingin your CatalogKathryn LybargerUniversity of Kentucky, kathryn.lybarger@uky.eduRight click to open a feedback form in a new tab to let us know how this document benefits you.Follow this and additional works at: https://uknowledge.uky.edu/libraries_presentPart of the Library and Information Science CommonsThis Presentation is brought to you for free and open access by the University of Kentucky Libraries at UKnowledge. It has been accepted for inclusionin Library Presentations by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu.Repository CitationLybarger, Kathryn, "Z-Books: Hunting Down Zombie Ebooks Hiding in your Catalog" (2013). Library Presentations. 55.https://uknowledge.uky.edu/libraries_present/55Z-Books:  Hunting Down Zombie Ebooks Hiding in your Catalog Kathryn Lybarger      @zemkat OVGTSL 2013  #ovgtsl2013 May 17, 2013 Cataloging ebooks MARC Catalog Success! Except sometimes… Or even worse… Zombies?  These ebooks look normal Until someone looks too closely requires a subscription Please login Currently unavailable Purchase for $30 error Page not found Then the screaming starts Nobody wants that! Not just dead? • Dead links not so bad … if they are not in the catalog  • Our patrons hate LOST books in the catalog  • Zombies are more disappointing Strategy: • Make sure zombies don’t get into the catalog in the first place  • Watch for news of recently turned  • Hunt down the ones that are already in there URLs may be bad initially • May be a typo  • Book not actually on the vendor site yet  • Record may have NO URL Bad DOI • Not registered yet  • Registered incorrectly  • Maybe points     TWO places! URLs may be modified • May contain proxy prefix  • May be institution specific  • May have session information Provider neutral records • Old standard: – One record per provider  • To catalog: – Use that record • New standard: – All e-versions on one record  • To catalog: – Use that record – Delete all URLs that don’t apply Ebook links in print books • Some print book records have URLs  • 856 42 “Related Resource”  • May sneak in through fast copy or batch cataloging Spot some bad URLs • Query the catalog for distinct hosts  • In Voyager:  SELECT DISTINCT ELINK_INDEX.URL_HOST FROM ELINK_INDEX WHERE       ELINK_INDEX.RECORD_TYPE="B"; Catch them before they come in  • Verify one by one  • Do they have notes indicating they’re bad?  • Run list through a link checker Just keep new ones out?  • Not sufficient  • Good links may die  • Nobody may tell you Vendor announcements • E-mail, RSS feeds  • Often interspersed with ads or news  • Do not always mention deletions Vendor data for deletions • Some vendors release “deleted” lists  • You may have to check the web site  • Even dig for them Current status data only • Some vendors will provide a list of what they currently have  • Changes not highlighted  • Download periodically Useful tool: vimdiff • Free and open source (charityware)  • Available on unix, mac  • Available on Windows (Cygwin) Vimdiff in action Some vendor data is less accessible • Examples: – MARC blob – “Whatever’s on the web site”  • Watch for announcements?  • Download / overlay periodically? Convert data to text • MARC -> .mrk text  (MarcEdit)  • Web site – Find A-Z title list page – Download / extract list  • Compare text (vimdiff) How to extract? • Different per web site  • Script (gather) – Download A-Z page – Find lines with book titles – Delete everything but the title – Compare to last month’s copy Unix tools • vim / vimdiff – editor  • curl – download web  pages • grep – search file  contents • sed – reformat files  • Available in Windows through Cygwin Hunting in the catalog • Necessary maintenance  • Links can go bad  • (Sometimes whole platforms!) Link checking  • Many link checkers available  • They check for codes: – Good? – Forbidden? – Not Found? Codes aren’t everything • A table of contents is a good page  • A bad DOI can be fixed  • Effective method differs by vendor  Humans are better at this • Instructions might be complicated: – Go to the web page – Open up one of the chapters – Make sure it is a PDF, not an order form Normac • MARC Normalizer and Access Checker  • Free, open source software  • Available from GitHub Normalize MARC • Only include URLs for the vendor you want  • Delete URLs with a proxy prefix Access Check • Zombies look different on each site – specify  • Load in MARC or list of URLs  • Check access according to rules Is it really a zombie?  • Or does it just look that way to you?  • Maybe your subscription changed? If you’re sure… • (Remove them from your catalog)  • Contact the vendor  • Modify WorldCat master record    Dead links in WorldCat • Leave them in!  • Make 856 second indicator blank  • $z This electronic address not available when searched on [Date] Then what? OCLC WorldShare Metadata Collection Manager?  Separate database of dead links?    Any questions?   Contact Me Kathryn Lybarger   @zemkat Kathryn.Lybarger@uky.edu  Problem Cataloger http://pc.blog.zemows.org/  GitHub http://github.com/zemkat   

Z-Books: Hunting Down Zombie Ebooks Hiding in your Catalog

http://uknowledge.uky.edu/cgi/viewcontent.cgi?article=1054&amp;context=libraries_present

Z-Books: Hunting Down Zombie Ebooks Hiding in your Catalog

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