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Canonical Estimation in a Rare-Events Regime
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2011
arXiv
pre-print
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We propose a general methodology for performing statistical inference within a 'rare-events regime' that was recently suggested by Wagner, Viswanath and Kulkarni. ...
Our approach allows one to easily establish consistent estimators for a very large class of canonical estimation problems, in a large alphabet setting. ...
INTRODUCTION We propose a general methodology for performing statistical inference within the 'rare-events regime' suggested by Wagner, Viswanath and Kulkarni in [1] , referred to as WVK hereafter. ...
arXiv:1109.4564v2
fatcat:t64k5jo2rjajhju4u3klhpsmpm
Canonical estimation in a rare-events regime
2011
2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton)
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Vincent Tan (UW-Madison) Estimation in a Rare Events Regime SILO 5 / 16 Y n = 1 n log p n n (X n,1 , . . . , X n,n ) + log n, f (x) = log x Vincent Tan (UW-Madison) Estimation in a Rare Events Regime SILO ...
(x) = − log x Alphabet size Y n = |A n | n , f (x) = 1 x Vincent Tan (UW-Madison) Estimation in a Rare Events Regime SILO 6 / 16 All previous examples were canonical Probabilities Y n = 1 n log p n n ( ...
doi:10.1109/allerton.2011.6120392
dblp:conf/allerton/OhannessianTD11
fatcat:oosbp2dgvrhu5ofa62qfi4jeme
Holocene fire and vegetation dynamics in a montane forest, North Cascade Range, Washington, USA
2009
Quaternary Research
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Climate appears to be a key driver in vegetation and fire regimes over millennial time scales. ...
For example, dominance of P. contorta in the early Holocene forests may have been reinforced by its susceptibility to frequent, stand-replacing fire events. ...
This manuscript is a contribution of the Western Mountain Initiative. ...
doi:10.1016/j.yqres.2009.03.008
fatcat:7vwtjfdaxrgippvnisrxmmsoya
Monte Carlo study of phase transitions in the bond-diluted 3D 4-state Potts model
2005
Nuclear Physics B
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Rare and typical events are identified and their role is qualitatively discussed in both regimes. ...
In the former regime, the nature of the transition is essentially clarified through an analysis of the energy probability distribution. In the latter regime critical exponents are estimated. ...
The authors gratefully thank Ian Campbell for a critical reading of the preprint which helped to improve it. ...
doi:10.1016/j.nuclphysb.2005.05.003
fatcat:wnutffwoqnacfmc5tmhgutgagy
An observational and modelling analysis of Laptev Sea (Arctic Ocean) ice variations during summer
2001
Annals of Glaciology
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A canonical correlation analysis between Arctic sea-level pressure and sea-ice concentration anomalies confirms large-scale relationships among these variables. ...
We did not find a simple relationship between sea-ice area anomalies and cyclone activity in the Laptev Sea area ...
The pattern of the SIC shows the seasonal decrease of SIC in the Arctic's marginal seas, while the second correlated mode (the estimated canonical correlation is 0.7) shows a rather rare atmospheric circulation ...
doi:10.3189/172756401781818699
fatcat:2qhicexojvg4vfivylzn7s2a6q
Studying Strangeness Production with HADES
2018
EPJ Web of Conferences
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The High-Acceptance DiElectron Spectrometer (HADES) operates in the 1 -2A GeV energy regime in fixed target experiments to explore baryon-rich strongly interacting matter in heavy-ion collisions at moderate ...
temperatures with rare and penetrating probes. ...
As strangeness is produced very rarely in the analyzed energy regime (typical one ss pair per event), its production is additionally suppressed by introducing a sub-volume, characterized by the canonical ...
doi:10.1051/epjconf/201817101001
fatcat:bqbkykonszfhpkkjauopz5i37y
Editorial: special issue on extremes in finance
2014
Extremes
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Rare are the fields of application where an EVT related quantity is written in the law as a quantity to be statistically estimated; VaR is such a case. ...
As the question involves statistical estimation of risk measures at quantile levels beyond 99 %, EVT becomes a canonical tool in some of the ensuing discussions. ...
doi:10.1007/s10687-014-0209-6
fatcat:fafar2pf5vbsjisehysxtmds6u
Rare Events and Scale-Invariant Dynamics of Perturbations in Delayed Chaotic Systems
2004
Physical Review Letters
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As a consequence, Lyapunov vector dynamics is dominated by rare random events that lead to non-Gaussian fluctuations and multiscaling properties. ...
We study the dynamics of perturbations in time delayed dynamical systems. ...
From that figure we obtain an estimation of the growth exponent 0:25 0:03 in the intermediate times regime, before a stationary state is reached. ...
doi:10.1103/physrevlett.92.204101
pmid:15169355
fatcat:3svnxjjnkvahfe3d47fy6txbdy
Method for Detecting Neutrinos from Internal Shocks in GRB Fireballs with AMANDA
2004
AIP Conference Proceedings
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The expected neutrino event rate is a function of the distribution of each individual burst in measured (or best-estimated) red shift. ...
Neutrino-based astronomy provides a new window on the most energetic processes in the universe. ...
In the event of no GRB-ν signal, event upper limits will be calculated for each individual GRB. ...
doi:10.1063/1.1810819
fatcat:txwzi3jdtjabjfgzac7rkbyjra
Phase transition in the Jarzynski estimator of free energy differences
2012
Physical Review E
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The transition between a regime in which thermodynamic relations apply only to ensembles of small systems coupled to a large environment and a regime in which they can be used to characterize individual ...
In the proper scaling limit, this regime change can be described in terms of a phase transition in variants of the random energy model (REM). ...
However, the sum is dominated by rare events that need to be sufficiently well sampled so that the Monte Carlo estimate is close to the asymptotic result. ...
doi:10.1103/physreve.85.051108
pmid:23004704
fatcat:f2yavxzkjbhrtgmol2mtvbbm3u
Partitioning the variation in stream fish assemblages within a spatio-temporal hierarchy
2007
Marine and Freshwater Research
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Using canonical correspondence analysis, each of the three sets of variables explained similar amounts of variation in fish assemblages (ranging from 44 to 52%). ...
local freshwater fish assemblages in the Mary River, south-eastern Queensland, Australia. ...
Acknowledgements The research presented in this paper formed part of an Honours Dissertation by the senior author in the Australian School of Environmental Studies, Griffith University. ...
doi:10.1071/mf06183
fatcat:mxmrekbcbzh3vpcxkau3qz3rye
Neutrality and the Response of Rare Species to Environmental Variance
2008
PLoS ONE
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This effect translated into a marked decrease in the characteristic time scale of species turnover, highlighting the role of rare species in driving assemblage dynamics in fluctuating environments. ...
The experimental results did not reject neutrality, but identified a positive effect of intermediate levels of environmental heterogeneity on the abundance of rare species. ...
In a spatial context, Condit et al. [10] found adequate fit of a neutral model to empirical estimates of beta diversity in tropical forests at scales between 0.2 and 50 km. ...
doi:10.1371/journal.pone.0002777
pmid:18648545
pmcid:PMC2481292
fatcat:4xdvos7qjzagfhhastelzkrwcu
EFFECTS OF FLOW REGIME ON FISH ASSEMBLAGES IN A REGULATED CALIFORNIA STREAM
2001
Ecological Applications
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The fishes in Lower Putah Creek, a regulated stream in the Central Valley of California, were sampled over a 5-yr period, 1994-1998. ...
Hydrologic variability between years and seasons indicated that flow regime had a large effect on the fish assemblages. ...
flow regime favors native fishes in a regulated stream (Poff et al. 1997) . ...
doi:10.1890/1051-0761(2001)011[0530:eofrof]2.0.co;2
fatcat:fank6ehzmfdbvbfcjlhabzjbqu
Effects of Flow Regime on Fish Assemblages in a Regulated California Stream
2001
Ecological Applications
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The fishes in Lower Putah Creek, a regulated stream in the Central Valley of California, were sampled over a 5-yr period, 1994-1998. ...
Hydrologic variability between years and seasons indicated that flow regime had a large effect on the fish assemblages. ...
flow regime favors native fishes in a regulated stream (Poff et al. 1997) . ...
doi:10.2307/3060907
fatcat:b6hwxg45vngwhfcx3hn2ykbn6i
Achieving the Threshold Regime with an Overscreened Josephson Junction
2009
Physical Review Letters
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2008 pre-print arXiv:0808.3465v1 fatcat:6zkuvfarirg7jgdrh73liaz534Other Versions
In the underdamped limit, over-screening the junction inhibits the energy diffusion in the junction, effectively creating a tunable activation barrier to the dissipative state. ...
We demonstrate that by utilizing an over-screened Josephson junction as a noise detector it is possible to achieve the threshold regime, whereby the tails of the fluctuating current distribution are measured ...
The power of these current kicks is proportional to the velocityφ, and therefore creates positive feedback for rare-event activation in the weak damping regime, because the velocity continues to grows ...
doi:10.1103/physrevlett.102.086806
pmid:19257771
fatcat:zxqaawfk3jb77hrk3uizpebsuu
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