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Activity Number:
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188
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Type:
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Topic Contributed
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Date/Time:
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Monday, July 30, 2007 : 2:00 PM to 3:50 PM
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Sponsor:
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IMS
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| Abstract - #309504 |
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Title:
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A Step Toward Bar Coding Life: A New Method To Assign Genes to Pre-existing Species Groups
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Author(s):
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Zaid Abdo*+ and Geoffre B. Golding
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Companies:
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University of Idaho and McMaster University
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Address:
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Dept of Mathematics Brink 300, Moscow, ID, 83844-1103,
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Keywords:
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barcoding ; assignment ; decision theory ; coalescent
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Abstract:
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A major part of the bar coding of life problem is to be able to assign newly sequenced or sampled individuals to existing groups that are pre-identified externally (by a taxonomist, for example). This problem involves evaluating the statistical evidence towards associating a new individual with a group or another. The main concern of our current research is to perform this task in a fast and accurate manner. To accomplish this we developed a model-based, decision theoretic framework based on the coalescent theory. Under this framework, we utilize both distance and the posterior probability of a group given the data and the newly sampled individual to assign this new individual. We believe this approach maximizes the use of the available information in the data. Our preliminary results indicate this approach is superior to using a simple measure of distance for assignment.
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