The Eleventh and Twelveth Problems of Rota’s Fubini Lectures: from Cumulants to Free Probability Theory

Nardo, E. Di; Senato, D.

doi:10.1007/978-0-387-88753-1_6

Cited by 4 publications

(1 citation statement)

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“…of powers of α via an operator E that looks like the expectation of random variables (r.v. 's) [35,75]. The i-th element of the sequence is then called the ith moment of α.…”

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confidence: 99%

Symbolic Calculus in Mathematical Statistics: A Review

Nardo¹

2015

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In the last ten years, the employment of symbolic methods has substantially extended both the theory and the applications of statistics and probability. This survey reviews the development of a symbolic technique arising from classical umbral calculus, as introduced by Rota and Taylor in 1994. The usefulness of this symbolic technique is twofold. The first is to show how new algebraic identities drive in discovering insights among topics apparently very far from each other and related to probability and statistics. One of the main tools is a formal generalization of the convolution of identical probability distributions, which allows us to employ compound Poisson random variables in various topics that are only somewhat interrelated. Having got a different and deeper viewpoint, the second goal is to show how to set up algorithmic processes performing efficiently algebraic calculations. In particular, the challenge of finding these symbolic procedures should lead to a new method, and it poses new problems involving both computational and conceptual issues. Evidence of efficiency in applying this symbolic method will be shown within statistical inference, parameter estimation, Lévy processes, and, more generally, problems involving multivariate functions. The symbolic representation of Sheffer polynomial sequences allows us to carry out a unifying theory of classical, Boolean and free cumulants. Recent connections within random matrices have extended the applications of the symbolic method.

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“…of powers of α via an operator E that looks like the expectation of random variables (r.v. 's) [35,75]. The i-th element of the sequence is then called the ith moment of α.…”

mentioning

confidence: 99%