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- Lundquist, Anders, 1978-
(författare)
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A note on choosing sampling probabilities for conditional Poisson sampling
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- For conditional Poisson sampling the sampling probabilities and the achieved inclusion probabilities are not identical, which is a problem. We present a general method for choosing the sampling probabilities, which uses only the desired inclusion probabilities and transformations of them. We compare the performance of this new method to other reasonable choices of sampling probabilities.
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- Lundquist, Anders, 1978-
(författare)
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Balanced unequal probability sampling with maximum entropy
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- This paper investigates how to perform balanced unequal probability sampling with maximum entropy. Focus is on balancing conditions having the form of known marginal sums in a cross-stratification table. Since only marginal sums are fixed, the sample sizes for one or more cells in the table are random. The probability distribution for those sample sizes can be expressed explicitly but there are computational difficulties except for very small cases. Markov Chain Monte Carlo methods are proposed for obtaining good distribution approximations, as well as sample selection. Some large-sample Gaussian approximations are also considered. Iterative procedures for obtaining sampling probabilities yielding specified inclusion probabilities are discussed.
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