Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies
Thesis (M.Sc.)--Memorial University of Newfoundland, 2008. Mathematics and Statistics Includes bibliographical references (leaves 123-125) In many of the multi-species trawl surveys conducted by Fisheries and Oceans Canada, the survey vessel "Wilfred Templeman" (WT) may be replaced by the...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/121141 2023-05-15T17:23:33+02:00 Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies Bataineh, Osama M. Memorial University of Newfoundland. Dept. of Mathematics and Statistics 2008 xvi, 125 leaves : ill., maps Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/121141 Eng eng Electronic Theses and Dissertations (13.84 MB) -- http://collections.mun.ca/PDFs/theses/Bataineh_OsamaM.pdf a2523279 http://collections.mun.ca/cdm/ref/collection/theses4/id/121141 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Binomial distribution Fish surveys--Mathematical models Poisson distribution Trawls and trawling--Mathematical models Text 2008 ftmemorialunivdc 2015-08-06T19:22:24Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2008. Mathematics and Statistics Includes bibliographical references (leaves 123-125) In many of the multi-species trawl surveys conducted by Fisheries and Oceans Canada, the survey vessel "Wilfred Templeman" (WT) may be replaced by the vessel "Alfred Needier" (AN). We examined paired-trawl experiments involving these two vessels to examine for differences in catchability. In particular, we examine for differences in catchability of the Witch flounder species. -- The relative efficiency of the AN compared to the WT is defined as the ratio of the means from both trawl catches. Four models are investigated in this thesis, Conditional Poisson (i.e. Binomial), Mixed Binomial, Negative Binomial and Conditional Negative Binomial. When catch data are Poisson distributed, the approach is clear and well-developed. However, over-dispersion creates problems, and over-dispersion is common in many types of data including fisheries data. -- We dealt with the over-dispersion problem using the Negative Binomial distribution to model the paired-counts instead of the Poisson distribution. We develop Conditional Negative Binomial (Conditional NB) and Concentrated Negative Binomial (Concentrated NB) models for estimating relative efficiency. We compared estimates with those from the more commonly used approaches involving standard logistic regression and also a mixed binomial regression model. We found that the Conditional NB and mixed binomial models performed better. -- Our results suggest that there were no significant differences in the relative catchability of the two vessels, based on the Mixed Binomial and Conditional NB models. Text Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Canada |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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ftmemorialunivdc |
language |
English |
topic |
Binomial distribution Fish surveys--Mathematical models Poisson distribution Trawls and trawling--Mathematical models |
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Binomial distribution Fish surveys--Mathematical models Poisson distribution Trawls and trawling--Mathematical models Bataineh, Osama M. Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
topic_facet |
Binomial distribution Fish surveys--Mathematical models Poisson distribution Trawls and trawling--Mathematical models |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2008. Mathematics and Statistics Includes bibliographical references (leaves 123-125) In many of the multi-species trawl surveys conducted by Fisheries and Oceans Canada, the survey vessel "Wilfred Templeman" (WT) may be replaced by the vessel "Alfred Needier" (AN). We examined paired-trawl experiments involving these two vessels to examine for differences in catchability. In particular, we examine for differences in catchability of the Witch flounder species. -- The relative efficiency of the AN compared to the WT is defined as the ratio of the means from both trawl catches. Four models are investigated in this thesis, Conditional Poisson (i.e. Binomial), Mixed Binomial, Negative Binomial and Conditional Negative Binomial. When catch data are Poisson distributed, the approach is clear and well-developed. However, over-dispersion creates problems, and over-dispersion is common in many types of data including fisheries data. -- We dealt with the over-dispersion problem using the Negative Binomial distribution to model the paired-counts instead of the Poisson distribution. We develop Conditional Negative Binomial (Conditional NB) and Concentrated Negative Binomial (Concentrated NB) models for estimating relative efficiency. We compared estimates with those from the more commonly used approaches involving standard logistic regression and also a mixed binomial regression model. We found that the Conditional NB and mixed binomial models performed better. -- Our results suggest that there were no significant differences in the relative catchability of the two vessels, based on the Mixed Binomial and Conditional NB models. |
author2 |
Memorial University of Newfoundland. Dept. of Mathematics and Statistics |
format |
Text |
author |
Bataineh, Osama M. |
author_facet |
Bataineh, Osama M. |
author_sort |
Bataineh, Osama M. |
title |
Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
title_short |
Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
title_full |
Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
title_fullStr |
Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
title_full_unstemmed |
Estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
title_sort |
estimating relative efficiency from paired-count data with over-dispersion, with application to fishery survey calibration studies |
publishDate |
2008 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/121141 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (13.84 MB) -- http://collections.mun.ca/PDFs/theses/Bataineh_OsamaM.pdf a2523279 http://collections.mun.ca/cdm/ref/collection/theses4/id/121141 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
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1766113310761025536 |