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Antonio Galves

Jefferson Antonio Galves, Brazilian mathematician (São Paulo 18 June 1947 –


Recognized as one of world leaders in research about Markovian systems of particles


ACHIEVEMENTS

With F. Bertein. Une classe de systems de particules stable par association. Probab. Theory Relat. Fields 41(1):73-85, 1977


First to formulate and solve the problem of hydrodynamic behavior of a Markovian system

With C. Kipnis, C. Marchioro & E. Presutti. Non equilibrium measures which exhibit a temperature gradient: study of a model. Comm. Math. Physics 81:127-47, 1981 

 

First to formulate and solve the problem of metastable behavior of stochastic processes

With M. Cassandro, E. Olivieri & M.E. Vares. Metastable behavior of stochastic dynamics: a pathwise approach. J. Stat. Phys. 35:603-34, 1984


Proved that the sequence of successive entrance times in a small neighborhood converges in law when suitably normatized to a homogeneous Poisson point process.

With P. Collet. Statistics of close visits to the indifferent fixed point of an interval map. J. Statis. Physics 72(3-4):459-78, 1993


Obtained the first convergent result for exponential law of occurrence time of rare event in a conservative system

With P. Collet & A. Lopes. Maximum likelihood and minimum entropy identification of grammars. Random and Computational Dynamics. 3:241-56, 1995 


Proved that the entrance time into a small interval is asymptotically exponentially distributed (1995)


With J. Garcia & U. Gut. Vocale – a semi-automatic annotation tool for prosodic research (2002)


Introduced the function sonority as an index of the local regularity of the speech signal

With J. Garcia, D. Duarte & C. Galves. Sonority as a basis for rhythmic class discrimination (2002)


With M. Cassandro, P. Collet, D. Duarte & J. Garcia. An universal linear relation among acoustic correlates of rhythm (2003)


Presented a new class of random fields which are the variable neighborhood random fields

With M. Cassandro & E. Locherbach. Partially observed Markov random fields are variable neighborhood random fields. J. Statis. Phys. 147(4):795-07, 2012


With Eva Locherbach developed Galves-Locherbach model for spiking neurons

With E. Löcherbach. Infinite Systems of Interacting Chains with Memory of Variable Length - A Stochastic Model for Biological Neural Nets". Journal of Statistical Physics, 151(5): 896–921, 2013


Introduced a notion of sensitivity of the contact process to its initial condition

With M. Cassandro & E. Locherbach. Information transmission and criticality in the contact process. J. Statis. Physics 168(6):1180-90, 2017 


With E. Locherbach, C. Pouzat & E. Presutti. A system of interacting neurons with short term plasticity (2019)


OTHER CONTRIBUTIONS  

With E. Presutti. Edge fluctuations for the one dimensional supercritical contact process. Ann. Probab. 15:1131-45, 1987 

With E. Presutti. Travelling wave structure of the one dimensional contact process. Stoch. Process Appl. 25:153-63, 1987 


ALGORITHMS, MODELS AND OTHERS

With A. Duarte, R. Fraiman, G. Ost & C. Vargas. Context tree selection for functional data (2016)

With A. Garivier & E. Gassiat. Joint estimation of intersecting context tree models. Scand. J. Statis. 40 (2013)

With N.L. Garcia, E. Locherbach & E. Orlandi. Kalikow-type decomposition for multicolor infinite range particle system. Ann. Appl. Probability 23(4):1629-59, 2013

With C. Galves, J.E. Garcia, N.L. Garcia & F. Leonardi. Context tree selection and linguistic rhythm retrieval from written texts. Ann. Appl. Statis. 6(1):186-209, 2012

With E. Locherbach & E. Orlandi. Perfect simulation of infinite range Gibbs measures and coupling with their finite range approximations. J. Statis. Phys. 138(1-3):476-95, 2010

With M. Cassandro, P. Collet, D. Duarte & J. Garcia. A stochastic model for the speech sonority. Mathem. Sci. Hum. (2007)

With J.A. Cuesta-Albertos, R. Fraiman, J. Garcia & M. Svarc. Identifying rhythmic classes of languages using their sonority: a Kolmogorov-Smirnov approach. J. Appl. Stastis. 34(6):749-61, 2007

With F. Leonardi. Sequence motif identification and protein family classification using probabilistic trees (2005)

With M. Abadi. A version of Maurer’s conjecture for psi-mixing processes. Nonlinearity 17(4):1357-66, 2004  

With D. Duarte, N. Lopes & R. Maronna. The statistical analysis of acoustic correlates of speech rhythm. Rhyth. Patt. Param. Sett. Lang. Change (2001)