Abstract
This paper considers a generalization of the Dirichlet process which is obtained by suitably normalizing superposed independent gamma processes having increasing integer-valued scale parameter. A comprehensive treatment of this random probability measure is provided. We prove results concerning its finite-dimensional distributions, moments, predictive distributions and the distribution of its mean. Most expressions are given in terms of multiple hypergeometric functions, thus highlighting the interplay between Bayesian Nonparametrics and special functions. Finally, a suitable simulation algorithm is applied in order to compute quantities of statistical interest.
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References
P. Allaart (2003) ArticleTitleMoments of the mean of Dubins-Freedman random probability distributions J. Theor. Probab. 16 471–488 Occurrence Handle10.1023/A:1023582913550 Occurrence Handle1025.60006 Occurrence Handle2004e:60011
P. Billingsley (2003) Probability and Measure EditionNumber3 Wiley New York
L. Bloomer T.P. Hill (2002) ArticleTitleRandom probability measures with given mean and variance J. Theor. Probab. 14 919–937 Occurrence Handle2003h:60072
Bondesson L. Generalized gamma convolutions and related classes of distributions and densities, Lecture Notes in Statistics Vol. 76, Springer, New York, 1992.
Cifarelli, D. M. and Regazzini, E. Considerazioni generali sull’impostazione bayesiana di problemi non parametrici. Le medie associative nel contesto del processo aleatorio di Dirichlet Parte II, Rivista di matematica per le scienze economiche e sociali 1 (1979), 95–111.
Cifarelli, D. M. and Regazzini, E. Distribution functions of means of a Dirichlet process, Ann. Stat. 18 (1990), 429–442 (Correction in Ann. Statist. 22 (1994), 1633–1634).
I. Epifani A. Lijoi I. Prünster (2003) ArticleTitleExponential functionals and means of neutral-to-the-right priors Biometrika 90 791–808 Occurrence Handle10.1093/biomet/90.4.791 Occurrence Handle2004j:60102
M.D. Escobar (1994) ArticleTitleEstimating normal means with a Dirichlet process prior J. Am. Stat. Ass. 89 268–277 Occurrence Handle0791.62039 Occurrence Handle94k:62054
M.D. Escobar M. West (1995) ArticleTitleBayesian density estimation and inference using mixtures J. Am. Stat. Ass. 90 577–588 Occurrence Handle96d:62054
H. Exton (1976) Multiple hypergeometric functions and applications Ellis Horwood Chichester
T.S. Ferguson (1973) ArticleTitleA Bayesian analysis of some nonparametric problems Ann. Stat. 1 209–230 Occurrence Handle0255.62037 Occurrence Handle50 #3441
D.A. Freedman (1963) ArticleTitleOn the asymptotic behavior of Bayes’ estimates in the discrete case Ann. Math. Stat. 34 1386–1403
P. Halmos (1944) ArticleTitleRandom alms Ann. Math. Stat. 15 182–189 Occurrence Handle0060.28302 Occurrence Handle6,5b
Hjort, N. L. Topics in non–parametric Bayesian statistics, In: P. J. Green et al. (eds), Highly Structured Stochastic Systems, Oxford University Press, Oxford, Oxford Statistical Science Series 27 (2003), 455–478.
H. Ishwaran L.F. James (2001) ArticleTitleGibbs sampling methods for stick-breaking priors J. Am. Stat. Ass. 96 IssueID2001 161–173 Occurrence Handle2004d:62018
H. Ishwaran L.F. James (2003) ArticleTitleSome further developments for stick–breaking priors: finite and infinite clustering and classification Sankhya 65 577–592 Occurrence Handle2005a:62147
James, L. F. Poisson Process Partition Calculus with applications to exchangeable models and Bayesian Nonparametrics, Mathematics ArXiv math.PR/0205093 (2002).
James, L. F., Lijoi, A. and Prünster, I. Conjugacy as a distinctive feature of the Dirichlet process, Scandinavian Journal of Statistics (2004), to appear.
J.F.C. Kingman (1975) ArticleTitleRandom discrete distributions J. Roy Stat. Soc. Ser. B. 37 1–22 Occurrence Handle0331.62019 Occurrence Handle51 #4505
G. Lauricella (1893) ArticleTitleSulle funzioni ipergeometriche a piùvariabili Rend. Circ. Mat. Palermo 7 111–158 Occurrence Handle25.0756
Lijoi, A., Mena, R. H. and Prünster, I. Hierarchical mixture modelling with normalized inverse Gaussian priors, ICER Working Papers 12/04 (2004).
A. Lijoi E. Regazzini (2004) ArticleTitleMeans of a Dirichlet process and multiple hypergeometric functions Ann. Probab. 32 1469–1495 Occurrence Handle2005c:60098
S.N. MacEachern (1994) ArticleTitleEstimating normal means with a conjugate style Dirichlet process prior Commun. Statist. Simulation Comp. 23 727–741 Occurrence Handle0825.62053 Occurrence Handle1293996
Muliere, P. and Secchi, P. A note on a proper Bayesian bootstrap, Quaderni del Dipartimento di Economia Politica e Metodi Quantitativi 18 (1995), Universtiàdegli Studi di Pavia.
Nieto-Barajas, L. E., Prünster, I. and Walker, S. G. Normalized random measures driven by increasing additive processes, Ann Stat. 32 (2004), to appear.
S. Petrone A.E. Raftery (1997) ArticleTitleA note on the Dirichlet process prior in Bayesian nonparametric inference with partial exchangeability Stat. Prob. Lett. 36 69–83 Occurrence Handle10.1016/S0167-7152(97)00050-3 Occurrence Handle98k:62067
J. Pitman (1995) ArticleTitleExchangeable and partially exchangeable random partitions Prob. Theory Related Fields 102 145–158 Occurrence Handle10.1007/BF01213386 Occurrence Handle0821.60047 Occurrence Handle96e:60059
Pitman, J. Some developments of the Blackwell-MacQueen urn scheme, In: T. S. Ferguson et al. (eds), Statistics, probability and game theory. Papers in honor of David Blackwell, Institute of Mathematical Statistics, Hayward, Lecture Notes, Monograph Series Vol 30, 1996, pp. 245–267.
Pitman, J. Poisson-Kingman partitions. In: Goldstein, D.R. (ed), Science and Statistics: A Festschrift for Terry Speed, Institute of Mathematical Statistics, Hayward, Lecture Notes, Monograph Series, Vol 40, 2003, pp. 1–35.
J. Pitman M. Yor (1997) ArticleTitleThe two-parameter Poisson-Dirichlet distribution derived from a stable subordinator Ann Prob. 25 855–900 Occurrence Handle98f:60147
Prünster, I. Random probability measures derived from increasing additive processes and their application to Bayesian statistics, Ph.d dissertation, Universitàdegli Studi di Pavia, Pavia, 2002.
K.B. Oldham J. Spanier (1974) The fractional calculus Academic Press New York
Regazzini, E. An example of the interplay between statistics and special functions, In: Tricomi’s ideas and contemporary applied mathematics, Acc. Naz. Lincei e Acc. Scienze Torino, Roma, Atti dei Convegni Lincei Vol. 147, 1998, pp. 303–320.
Regazzini, E. Foundations of Bayesian statistics and some theory of Bayesian nonparametric methods, Lecture Notes, Stanford University, Stanford, 2001.
E. Regazzini A. Guglielmi G. Di Nunno (2002) ArticleTitleTheory and numerical analysis for exact distribution of functionals of a Dirichlet process Ann. Stat. 30 1376–1411 Occurrence Handle2004h:62054
E. Regazzini A. Lijoi I. Prünster (2003) ArticleTitleDistributional results for means of random measures with independent increments Ann. Stat. 31 560–585
K. Sato (1999) Lévy processes and infinitely divisible distributions Cambridge University Press Cambridge
J. Sethuraman (1994) ArticleTitleA constructive definition of Dirichlet priors Stat. Sinica 4 639–650 Occurrence Handle0823.62007 Occurrence Handle95m:62058
S. Skiena (1990) Implementing discrete mathematics: combinatorics and graph theory with Mathematica Addison-Wesley Reading, MA
S.G. Walker P. Damien (1998) ArticleTitleA full Bayesian non–parametric analysis involving a neutral to the right process Scand. J Stat. 25 669–680 Occurrence Handle10.1111/1467-9469.00128 Occurrence Handle2000b:62059
S.G. Walker P. Damien P.W. Laud A.F.M. Smith (1999) ArticleTitleBayesian nonparametric inference for random distributions and related functions J. Roy. Stat. Soc. Ser. B. 61 485–527 Occurrence Handle2000g:62123
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Lijoi, A., Mena, R.H. & Prünster, I. Bayesian Nonparametric Analysis for a Generalized Dirichlet Process Prior. Stat Infer Stoch Process 8, 283–309 (2005). https://doi.org/10.1007/s11203-005-6071-z
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DOI: https://doi.org/10.1007/s11203-005-6071-z
Keywords
- Bayesian nonparametric inference
- Dirichlet process
- generalized gamma convolutions
- Lauricella hypergeometric functions
- means of random probability measures
- predictive distributions