| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Fed Rio Grande do Norte, Dept Estat, Natal, RN - Brazil
[2] Univ Lisbon, Dept Matemat, IST, Lisbon - Portugal
[3] Univ Lisbon, CEAUL, FCUL, Lisbon - Portugal
[4] Univ Sao Paulo, Dept Estat, Sao Paulo - Brazil
Total Affiliations: 4
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| Document type: | Journal article |
| Source: | SORT-Statistics and Operations Research Transactions; v. 45, n. 1, p. 19-31, JAN-JUN 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We construct credible intervals to estimate the mean organism (zooplankton and phytoplankton) concentration in ballast water via a decision-theoretic approach. To obtain the required optimal sample size, we use a total cost minimization criterion defined as the sum of the sampling cost and the Bayes risk either under a Poisson or a negative binomial model for organism counts, both with a gamma prior distribution. Such credible intervals may be employed to verify whether the ballast water discharged from a ship is in compliance with international standards. We also conduct a simulation study to evaluate the credible interval lengths associated with the proposed optimal sample sizes. (AU) | |
| FAPESP's process: | 13/21728-2 - The use of modern autopsy techniques to investigate human diseases (MODAU) |
| Grantee: | Paulo Hilário Nascimento Saldiva |
| Support type: | Research Projects - Thematic Grants |