• Making oral history accessible over the World Wide Web

    Bainbridge, David; Cunningham, Sally Jo (University of Waikato, Department of Computer Science, 1998-11)
    We describe a multimedia, WWW-based oral history collection constructed from off-the-shelf or publicly available software. The source materials for the collection include audio tapes of interviews and summary transcripts ...
  • Melody based tune retrieval over the World Wide Web

    Bainbridge, David; McNab, Rodger J.; Smith, Lloyd A. (University of Waikato, Department of Computer Science., 1998-11)
    In this paper we describe the steps taken to develop a Web-based version of an existing stand-alone, single-user digital library application for melodical searching of a collection of music. For the three key components: ...
  • Link as you type: using key phrases for automated dynamic link generation

    Jones, Steve (University of Waikato, Department of Computer Science, 1998-09)
    When documents are collected together from diverse sources they are unlikely to contain useful hypertext links to support browsing amongst them. For large collections of thousands of documents it is prohibitively resource ...
  • Naive Bayes for regression

    Frank, Eibe; Trigg, Leonard E.; Holmes, Geoffrey; Witten, Ian H. (University of Waikato, Department of Computer Science., 1998-10)
    Despite its simplicity, the naïve Bayes learning scheme performs well on most classification tasks, and is often significantly more accurate than more sophisticated methods. Although the probability estimates that it ...
  • Measuring ATM traffic: final report for New Zealand Telecom

    Cleary, John G.; Graham, Ian; Pearson, Murray W.; McGregor, Anthony James (University of Waikato, Department of Computer Science, 1998-10)
    The report describes the development of a low-cost ATM monitoring system, hosted by a standard PC. The monitor can be used remotely returning information on ATM traffic flows to a central site. The monitor is interfaces ...
  • An analysis of usage of a digital library

    Jones, Steve; Cunningham, Sally Jo; McNab, Rodger J. (University of Waikato, Department of Computer Science, 1998-06)
    As experimental digital library testbeds gain wider acceptance and develop significant user bases, it becomes important to investigate the ways in which users interact with the systems in practice. Transaction logs are one ...
  • Proceedings of CBISE ’98 CaiSE*98 workshop on component based information systems engineering

    Grundy, John C. (University of Waikato, Department of Computer Science, 1998-06)
    Component-based information systems development is an area of research and practice of increasing importance. Information Systems developers have realised that traditional approaches to IS engineering produce monolithic, ...
  • An entropy gain measure of numeric prediction performance

    Trigg, Leonard E. (University of Waikato, Department of Computer Science, 1998-05)
    Categorical classifier performance is typically evaluated with respect to error rate, expressed as a percentage of test instances that were not correctly classified. When a classifier produces multiple classifications for ...
  • Experiences with a weighted decision tree learner

    Cleary, John G.; Trigg, Leonard E. (University of Waikato, Department of Computer Science, 1998-05)
    Machine learning algorithms for inferring decision trees typically choose a single “best” tree to describe the training data. Recent research has shown that classification performance can be significantly improved by voting ...
  • Managing multiple collections, multiple languages, and multiple media in a distributed digital library

    Witten, Ian H.; McNab, Rodger J.; Jones, Steve; Cunningham, Sally Jo; Bainbridge, David; Apperley, Mark (University of Waikato, Department of Computer Science, 1998-05)
    Managing the organizational and software complexity of a comprehensive digital library presents a significant challenge. Different library collections each have their own distinctive features. Different presentation languages ...
  • An evaluation of passage-level indexing strategies for a technical report archive

    Williams, Michael (University of Waikato, Department of Computer Science., 1998-04)
    Past research has shown that using evidence from document passages rather than complete documents is an effective way of improving the precision of full-text database searches. However, passage-level indexing has yet to ...
  • Predicting apple bruising relationships using machine learning

    Holmes, Geoffrey; Cunningham, Sally Jo; Dela Rue, B. T.; Bollen, A. F. (University of Waikato, Department of Computer Science, 1998-04)
    Many models have been used to describe the influence of internal or external factors on apple bruising. Few of these have addressed the application of derived relationships to the evaluation of commercial operations. From ...
  • New foundations for Z

    Henson, Martin C.; Reeves, Steve (University of Waikato, Department of Computer Science, 1998-03)
    We provide a constructive and intensional interpretation for the specification language Z in a theory of operations and kinds T. The motivation is to facilitate the development of an integrated approach to program construction. ...
  • A logic for the schema calculus

    Henson, Martin C.; Reeves, Steve (University of Waikato, Department of Computer Science, 1998-03)
    In this paper we introduce and investigate a logic for the schema calculus of Z. The schema calculus is arguably the reason for Z’s popularity but so far no true calculus (a sound system of rules for reasoning about schema ...
  • Revising Z: semantics and logic

    Henson, Martin C.; Reeves, Steve (University of Waikato, Department of Computer Science, 1998-03)
    We introduce a simple specification logic Zc comprising a logic and semantics (in ZF set theory). We then provide an interpretation for (a rational reconstruction of) the specification language Z within Zc. As a result we ...
  • VQuery: a graphical user interface for Boolean query Specification and dynamic result preview

    Jones, Steve (University of Waikato, Department of Computer Science, 1998-03)
    Textual query languages based on Boolean logic are common amongst the search facilities of on-line information repositories. However, there is evidence to suggest that the syntactic and semantic demands of such languages ...
  • Generating accurate rule sets without global optimization

    Frank, Eibe; Witten, Ian H. (University of Waikato, Department of Computer Science, 1998-01)
    The two dominant schemes for rule-learning, C4.5 and RIPPER, both operate in two stages. First they induce an initial rule set and then they refine it using a rather complex optimization stage that discards (C4.5) or adjusts ...
  • Boosting trees for cost-sensitive classifications

    Ting, Kai Ming; Zheng, Zijian (University of Waikato, Department of Computer Science, 1998-01)
    This paper explores two boosting techniques for cost-sensitive tree classification in the situation where misclassification costs change very often. Ideally, one would like to have only one induction, and use the induced ...

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