• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    • Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • What is an expert?

    Thumbnail
    View/Open
    O’LearyPUB761.pdf (199.8Kb)
    Author(s)
    O'Leary, RA
    Fisher, R
    Choy, S Low
    Mengersen, K
    Caley, MJ
    Griffith University Author(s)
    Low-Choy, Sama J.
    Year published
    2011
    Metadata
    Show full item record
    Abstract
    Coral reefs are iconic, high-diversity, ecosystems that currently face an unprecedented set of hazards threatening their long-term existence. While widely recognized for being highly diverse, the extent of the diversity is still very poorly known. Much of it is yet to be discovered, and there is more than an order of magnitude uncertainty around the total number of multi-cellular species they host. As part of the Census of Marine Life CReefs Project, taxonomists’ knowledge on the number of species on coral reefs within particular taxonomic groups was elicited (Fisher et al., 2011; O’Leary et al., 2011) in an attempt to provide ...
    View more >
    Coral reefs are iconic, high-diversity, ecosystems that currently face an unprecedented set of hazards threatening their long-term existence. While widely recognized for being highly diverse, the extent of the diversity is still very poorly known. Much of it is yet to be discovered, and there is more than an order of magnitude uncertainty around the total number of multi-cellular species they host. As part of the Census of Marine Life CReefs Project, taxonomists’ knowledge on the number of species on coral reefs within particular taxonomic groups was elicited (Fisher et al., 2011; O’Leary et al., 2011) in an attempt to provide a better estimate of global coral-reef species richness. In ecology, expert opinion can provide valuable information for statistical modelling, particularly when data are limited or unreliable (e.g. Low Choy et al., 2009). However, unlike data-driven models, expertdriven models are not calibrated to empirical data. Instead, they rely entirely on the credibility and expertise of the experts. Therefore, it is important to be able to estimate how expert an expert is. In this case, how expert were the taxonomists elicited? In this paper, we develop a conceptual model that describes criteria defining taxonomic expertise. This model was developed in group discussion with four taxonomists/ecologists about what constitutes an expert in the field of taxonomy. Criteria for evaluating what makes an expert were established first. Then a conceptual model was built, which identified relationships between these criteria. Together, these criteria and their interactions provide a conceptual model for defining taxonomic expertise, in the context of the data being elicited for the number of species on coral reefs. This conceptual model provides the basis for the next step of eliciting prior distributions of the parameters for these the relationships, to provide a full specification of a prior for a Bayesian hierarchical model (Donald et al., 2011).
    View less >
    Conference Title
    19TH INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION (MODSIM2011)
    Publisher URI
    http://www.mssanz.org.au/modsim2011
    Copyright Statement
    © 2011 Modellling & Simulation Society of Australia & New Zealand. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the author(s).
    Subject
    Probability Theory
    Publication URI
    http://hdl.handle.net/10072/173606
    Collection
    • Conference outputs

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander