Gap Based Inverse Sampling (2016)
Type of ContentJournal Article
PublisherUniversity of Canterbury. Mathematics and Statistics
AuthorsPanahbehagh, B., Brown, J.show all
We present a new inverse sampling design for surveys of rare events, Gap Based Inverse Sampling. In the design, sampling stops if, after a predetermined interval, or gap, no new rare events are found. The length of the gap that follows after finding a rare event is used as a way of limiting sample effort. We present stopping rules using decisions based on the gap length, the total number of rare events found, and a fixed upper limit of survey effort. We illustrate the use of the design with stratified sampling of two biological populations. The design uses the intuitive behaviour of a field biologist in stratified sampling, where if in a stratum nothing is found after a long search, the field surveyor would like to consider the stratum is empty and stop searching. Our design has appeal for surveying rare events (for example a rare species) with stratified sampling where there are likely to be some completely empty strata.
CitationPanahbehagh, B., Brown, J. (2016) Gap Based Inverse Sampling. Communications in Statistics - Theory and Methods, (in press).
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