Category Archives: Cauchy distribution

Bayesian blocks via PELT in R

Posted on 1 August 2016 by ecoquant

The Bayesian blocks algorithm of Scargle, Jackson, Norris, and Chiang has an enthusiastic user community in astrostatistics, in data mining, and among some in machine learning. It is a dynamic programming algorithm (see VanderPlas referenced below) and, so, exhibits optimality … Continue reading →

Posted in American Statistical Association, AMETSOC, anomaly detection, astrophysics, Cauchy distribution, changepoint detection, engineering, geophysics, multivariate statistics, numerical analysis, numerical software, numerics, oceanography, population biology, population dynamics, Python 3, quantitative biology, quantitative ecology, R, Scargle, spatial statistics, square wave approximation, statistics, stepwise approximation, time series, Woods Hole Oceanographic Institution | 3 Comments

“Catching long tail distribution” (Ted Dunning)

Posted on 10 June 2016 by ecoquant

One of the best presentations on what can happen if someone takes a naive approach to network data. It also highlights what is, to my mind, the greatly underappreciated t-distribution, which is typically only used in connection with frequentist Student … Continue reading →

Posted in Cauchy distribution, complex systems, data science, Lévy flights, leptokurtic, mathematics, maths, networks, physics, population biology, population dynamics, regime shifts, sampling, statistics, Student t distribution, time series | Leave a comment

Global Sea Level Rise by NASA Satellite since 1993

Posted on 2 November 2015 by ecoquant

Y’know those NASA satellites Republican Presidential candidate Ted Cruz is so proud to tell us say that there’s been no warming of Earth in 18 years? Well, that’s wrong, of course, but it’s the same organization and the same kinds … Continue reading →

Posted in Anthropocene, carbon dioxide, Carbon Worshipers, Cauchy distribution, citizenship, civilization, climate change, climate disruption, destructive economic development, economics, floods, forecasting, games of chance, geophysics, global warming, Hyper Anthropocene, icesheets, living shorelines, MA, meteorology, oceanography, planning, politics, rationality, reasonableness, science, sea level rise, statistics | Leave a comment

On Changing Things

Posted on 30 September 2015 by ecoquant

You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete. That’s from Buckminster Fuller, a fellow Unitarian.

Posted in adaptation, Anthropocene, bifurcations, bridge to nowhere, Buckminster Fuller, Cauchy distribution, clean disruption, climate disruption, demand-side solutions, destructive economic development, Disney, dynamic linear models, dynamical systems, Epcot, exponential growth, fossil fuel divestment, global warming, Hyper Anthropocene, physical materialism, planning, rationality, reasonableness, Spaceship Earth, stochastic algorithms | Leave a comment

The Art and Science of Stefan Rahmstorf

Posted on 18 September 2015 by ecoquant

Updated, 21st September 2015 I particularly like the last scene from TDAT. James Hansen and Makiko Sato have an update titled “Predictions Implicit in ‘Ice Melt’ Paper and Global Implications”. WHOI has studied the Irminger Sea and continues the study … Continue reading →

Posted in Anthropocene, art, bifurcations, carbon dioxide, Cauchy distribution, civilization, climate, climate change, climate disruption, climate education, destructive economic development, disingenuity, ecology, economics, education, environment, ethics, Exxon, games of chance, geophysics, global warming, humanism, Hyper Anthropocene, icesheets, IPCC, James Hansen, mathematics, maths, physical materialism, physics, rationality, reasonableness, science, sea level rise, statistics, sustainability, the right to know | Leave a comment

Antarctic Ice Sheet Mass Balance (from SCAR report)

Posted on 9 September 2015 by ecoquant

This is from the Scientific Committee on Antarctic Research (“SCAR”) Annual Report 2014-2015, Bulletin No. 191, August 2015. Ice Sheet Mass Balance The floating ice shelves surrounding the Antarctic Ice Sheet restrain the grounded icesheet flow. Thinning of an ice … Continue reading →

Posted in Antarctica, Anthropocene, bifurcations, carbon dioxide, Cauchy distribution, climate, climate change, climate disruption, environment, games of chance, geophysics, global warming, Hyper Anthropocene, James Hansen, oceanography, physics, rationality, reasonableness, risk, science, Scripps Institution of Oceanography, sea level rise, sustainability, WHOI | Leave a comment

“Dismantling the Utility Model is the Fastest Path to a Cleaner Electricity Infrastructure”

Posted on 7 September 2015 by ecoquant

Dismantling the Utility Model is the Fastest Path to a Cleaner Electricity Infrastructure, by Thomas Conroy.

Posted in Cauchy distribution, clean disruption, climate disruption, conservation, consumption, decentralized electric power generation, decentralized energy, demand-side solutions, destructive economic development, economics, efficiency, EIA, energy, energy reduction, energy utilities, engineering, fossil fuel divestment, fossil fuels, global warming, investment in wind and solar energy, maths, mitigation, natural gas, optimization, pipelines, politics, public utility commissions, rationality, reasonableness, solar energy, solar power, SolarPV.tv, Tony Seba, zero carbon | Leave a comment

Hansen et al.

Posted on 28 July 2015 by ecoquant

Originally posted on Open Mind:
A new paper by Hansen et al., Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming is highly dangerous is currently under review…

Posted in adaptation, Antarctica, Anthropocene, Arctic, astrophysics, bifurcations, bridge to nowhere, carbon dioxide, carbon dioxide capture, Cauchy distribution, chance, civilization, climate, climate change, climate disruption, climate zombies, COP21, denial, differential equations, dynamical systems, ecology, economics, environment, ethics, floods, forecasting, games of chance, geophysics, global warming, Hyper Anthropocene, IPCC, James Hansen, mathematics, maths, meteorology, nor'easters, oceanography, physics, politics, probability, rationality, reasonableness, science, sea level rise, statistics, Student t distribution, Tamino, temporal myopia, the right to know, transparency, UNFCCC, zero carbon | Leave a comment

Welcome to the Hyper-Anthropocene

Posted on 23 July 2015 by ecoquant

The anticipated paper by J. Hansen, M. Sato, P. Hearty, R. Ruedy, M. Kelley, V. Masson-Delmotte, G. Russell, G. Tselioudis, J. Cao, E. Rignot, I. Velicogna, E. Kandiano, K. von Schuckmann, P. Kharecha, A. N. Legrande, M. Bauer, and K.-W. … Continue reading →

Posted in adaptation, Antarctica, Anthropocene, Arctic, astrophysics, bifurcations, Boston, carbon dioxide, Carbon Tax, Cauchy distribution, chance, citizenship, civilization, climate, climate change, climate disruption, dynamical systems, ecology, economics, engineering, environment, exponential growth, finance, floods, forecasting, games of chance, geophysics, global warming, Hyper Anthropocene, ignorance, investing, IPCC, living shorelines, meteorology, oceanography, physics, Principles of Planetary Climate, rationality, Ray Pierrehumbert, reasonableness, risk, science, science education, sea level rise, seawalls, temporal myopia, the right to know | 2 Comments

“Feedback temperature dependence determines the risk of high warming”

Posted on 2 June 2015 by ecoquant

Jonah Bloch-Johnson, Ray Pierrehumbert, and Dorian Abbot have a new paper out in Geophysical Research Letters which is pretty exciting, at least for me, having to do with both climate and dynamical systems. They are far from the only ones … Continue reading →

Posted in bifurcations, Cauchy distribution, chance, climate, climate change, climate disruption, climate education, differential equations, dynamical systems, ecology, environment, forecasting, geophysics, global warming, mathematics, maths, meteorology, physics, Principles of Planetary Climate, rationality, Ray Pierrehumbert, science | Leave a comment

“Cauchy Distribution: Evil or Angel?” (from Xian)

Posted on 18 May 2015 by ecoquant

Cauchy Distribution: Evil or Angel?. From Professor Christian Robert.

Posted in arXiv, Bayes, Bayesian, Cauchy distribution, information theoretic statistics, mathematics, maths, optimization, probabilistic programming, probability, rationality, reasonableness, statistics, stochastic algorithms, stochastics, Student t distribution | Leave a comment