Inter-Linker Consistency in the Manual Construction of Hypertext Documents Jonathan Furner University of California, Los Angeles Web: http://www.ucla.edu/ Department of Information Studies Web: http://dlis.gseis.ucla.edu/ 405 Hilgard Avenue, Los Angeles, CA 90095-1520, USA Email: jfurner@ucla.edu Web: http://scow.gseis.ucla.edu/faculty/jfurner/HTML/jfurner.html David Ellis, Peter Willett University of Sheffield Web: http://www.shef.ac.uk/ Department of Information Studies Web: http://www.shef.ac.uk/uni/academic/I-M/is/home.html Western Bank, Sheffield, S10 2TN, England Email: d.ellis@sheffield.ac.uk, p.willett@sheffield.ac.uk Web: http://www.shef.ac.uk/uni/academic/I-M/is/people/ellis.html, http://www.shef.ac.uk/uni/academic/I-M/is/people/willett.html Abstract: The creation of hypertext links by manual means is difficult and costly, but is often preferred to automatic methods in attempts to optimize hypertext `quality'. Experiments show, however, that levels of consistency amongst human link-creators---in common with those historically observed amongst human indexers---are generally low and variable, and that the effectiveness of retrieval from manually-constructed hypertexts can be expected to suffer as a result. This finding motivates further comparison both of manual and of automatic methods of link creation. Categories and Subject Descriptors: H.3.1 [Information Storage and Retrieval]: Content Analysis and Indexing - Indexing methods H.5.4 [Information Interfaces and Presentation]: Hypertext/Hypermedia - Architectures I.7.2 [Document and Text Processing]: Document Preparation - Hypertext/Hypermedia General Terms: Experimentation, Performance, Design Additional Key Words and Phrases: Graph theory, inter-indexer consistency, link creation, similarity, topological indices 1 Introduction The
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