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Nonanticipating estimation applied to sequential analysis and changepoint detection. (English) Zbl 1077.62067

Summary: Suppose a process yields independent observations whose distributions belong to a family parameterized by \(\theta\in \Theta\). When the process is in control, the observations are i.i.d. with a known parameter value \(\theta_0\). When the process is out of control the parameter changes. We apply an idea of H. Robbins and D. Siegmund [Proc. Sixth Berkeley Symp. Math. Stat. Probab. 4, 37–41 (1972)] to construct a class of sequential tests and detection schemes whereby the unkuown post-change parameters are estimated. This approach is especially useful in situations where the parametric space is intricate and mixture-type rules are operationally or conceptually difficult to formulate. We exemplify our approach by applying it to the problem of detecting a change in the shape parameter of a Gamma distribution, in both a univariate and a multivariate setting.

MSC:

62L10 Sequential statistical analysis
62P30 Applications of statistics in engineering and industry; control charts
60K10 Applications of renewal theory (reliability, demand theory, etc.)
62F05 Asymptotic properties of parametric tests
65C05 Monte Carlo methods

References:

[1] Dragalin, V. P. (1997). The sequential change point problem. Economic Quality Control 12 95–122. · Zbl 0914.62079
[2] Lai, T. L. and Siegmund, D. (1977). A nonlinear renewal theory with applications to sequential analysis. I. Ann. Statist. 5 946–954. JSTOR: · Zbl 0378.62069 · doi:10.1214/aos/1176343950
[3] Lorden, G. and Pollak, M. (1994). An alternative to mixtures for sequential testing and changepoint detection. Technical report. · Zbl 1077.62067
[4] Pollak, M. (1978). Optimality and almost optimality of mixture stopping rules. Ann. Statist . 6 910–916. JSTOR: · Zbl 0378.62071 · doi:10.1214/aos/1176344264
[5] Pollak, M. (1987). Average run lengths of an optimal method of detecting a change in distribution. Ann. Statist. 15 749–779. JSTOR: · Zbl 0632.62080 · doi:10.1214/aos/1176350373
[6] Pollak, M. and Siegmund, D. (1975). Approximations to the expected sample size of certain sequential tests. Ann. Statist. 3 1267–1282. · Zbl 0347.62063 · doi:10.1214/aos/1176343284
[7] Pollak, M. and Siegmund, D. (1991). Sequential detection of a change in a normal mean when the initial value is unknown. Ann. Statist. 19 394–416. JSTOR: · Zbl 0732.62080 · doi:10.1214/aos/1176347990
[8] Pollak, M. and Yakir, B. (1999). A simple comparison of mixture vs. nonanticipating estimation. Sequential Anal. 18 157–164. · Zbl 1064.62556 · doi:10.1080/07474949908836428
[9] Robbins, H. and Siegmund, D. (1972). A class of stopping rules for testing parametric hypotheses. Proc. Sixth Berkeley Symp. Math. Statist. Probab. 4 37–41. Univ. California Press, Berkeley.
[10] Robbins, H. and Siegmund, D. (1974). The expected sample size of some tests of power one. Ann. Statist. 2 415–436. · Zbl 0318.62069 · doi:10.1214/aos/1176342704
[11] Roberts, S. W. (1966). A comparison of some control chart procedures. Technometrics 8 411–430.
[12] Shiryayev, A. N. (1963). On optimum methods in quickest detection problems. Theory Probab . Appl . 8 22–46. · Zbl 0213.43804 · doi:10.1137/1108002
[13] Siegmund, D. (1985). Sequential Analysis : Tests and Confidence Intervals. Springer, New York. · Zbl 0573.62071
[14] Siegmund, D. (1986). Boundary crossing probabilities and statistical applications. Ann. Statist . 14 361–404. JSTOR: · Zbl 0632.62077 · doi:10.1214/aos/1176349928
[15] Siegmund, D. and Venkatraman, E. S. (1995). Using the generalized likelihood ratio statistic for sequential detection of a change-point. Ann. Statist . 23 255–271. JSTOR: · Zbl 0821.62044 · doi:10.1214/aos/1176324466
[16] Stone, C. (1965). On moment generating functions and renewal theory. Ann. Math. Statist . 36 1298–1301. · Zbl 0135.18903 · doi:10.1214/aoms/1177700003
[17] Woodroofe, M. (1982). Nonlinear Renewal Theory in Sequential Analysis. SIAM, Philadelphia. · Zbl 0487.62062
[18] Yakir, B. (1995). A note on the run length to false alarm of a change-point detection policy. Ann . Statist . 23 272–281. JSTOR: · Zbl 0828.62072 · doi:10.1214/aos/1176324467
[19] Yakir, B. and Pollak, M. (1998). A new representation for a renewal-theoretic constant appearing in asymptotic approximations of large deviations. Ann. Appl. Probab . 8 749–774. · Zbl 0937.60082 · doi:10.1214/aoap/1028903449
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