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The new physics needed to probe the origins of life

May 20, 2019 by Complexity Digest   Comments (0)

A World Beyond Physics: The Emergence and Evolution of Life Stuart A. Kauffman Oxford University Press (2019)   (…) His key insight is motivated by what he calls “the nonergodic world” — that of objects more complex than atoms. Most atoms are simple, so all their possible states can exist over a reasonable period of time. Once they start interacting to form molecules, the number of possible states becomes mind-bogglingly massive. Only a tiny number of proteins that are modestly complex —...

2019 IEEE Symposium Series on Computational Intelligence

May 20, 2019 by Complexity Digest   Comments (0)

IEEE SSCI is a flagship annual international conference on computational intelligence sponsored by the IEEE Computational Intelligence Society, promoting all aspects of theory, algorithm design, applications and related emerging techniques. As a tradition, IEEE SSCI 2019 will co-locate a large number of exciting symposiums, each dedicated to a special topic within or related to computational intelligence, thereby providing a unique platform for promoting cross-fertilization and collaboration....

Singularity cities

May 20, 2019 by Complexity Digest   Comments (0)

We propose an upgraded gravitational model which provides population counts beyond the binary (urban/non-urban) city simulations. Numerically studying the model output, we find that the radial population density gradients follow power-laws where the exponent is related to the preset gravity exponent γ. Similarly, the urban fraction decays exponentially, again determined by γ. The population density gradient can be related to radial fractality and it turns out that the typical exponents imply...

Complex Systems in Aesthetics and Arts

May 20, 2019 by Complexity Digest   Comments (0)

The arts are one of the most complex of human endeavours, and so it is fitting that a special issue on Complex Systems in Aesthetics and Arts is being published. As the editors of this special issue, we would like to thank the reviewers of the submitted papers for their hard work in making this issue possible, as well as the authors who submitted their work and were very responsive to the comments of the reviewers and editors. The word complexity has a specific meaning in the context of...

Particle velocity controls phase transitions in contagion dynamics

May 20, 2019 by Complexity Digest   Comments (0)

Interactions often require the proximity between particles. The movement of particles, thus, drives the change of the neighbors which are located in their proximity, leading to a sequence of interactions. In pathogenic contagion, infections occur through proximal interactions, but at the same time, the movement facilitates the co-location of different strains. We analyze how the particle velocity impacts on the phase transitions on the contagion process of both a single infection and two...

Amazon Ads vs Google, Instagram, Facebook

May 20, 2019 by The Reformed Broker   Comments (0)

Josh Brown talks with media agency founder Greg March of Noble People about what's going on.... The post Amazon Ads vs Google, Instagram, Facebook appeared first on The Reformed Broker.

A Comment on "Estimating Dynamic Discrete Choice Models with Hyperbolic Discounting" by Hanming Fang and Yang Wang. (arXiv:1905.07048v1 [econ.EM])

May 19, 2019 by Quantitative Finance at arXiv   Comments (0)

The recent literature often cites Fang and Wang (2015) for analyzing the
identification of time preferences in dynamic discrete choice under exclusion
restrictions (e.g. Yao et al., 2012; Lee, 2013; Ching et al., 2013; Norets and
Tang, 2014; Dub\'e et al., 2014; Gordon and Sun, 2015; Bajari et al., 2016;
Chan, 2017; Gayle et al., 2018). Indeed, Fang and Wang's Proposition 2 claims
generic identification of a dynamic discrete choice model with hyperbolic
discounting. However, this claim uses a...

Cointegration in high frequency data. (arXiv:1905.07081v1 [q-fin.ST])

May 19, 2019 by Quantitative Finance at arXiv   Comments (0)

In this paper, we consider a framework adapting the notion of cointegration
when two asset prices are generated by a driftless It\^{o}-semimartingale
featuring jumps with infinite activity, observed synchronously and regularly at
high frequency. We develop a regression based estimation of the cointegrated
relations method and show the related consistency and central limit theory when
there is cointegration within that framework. We also provide a Dickey-Fuller
type residual based test for the...

A Nonlocal Approach to The Quantum Kolmogorov Backward Equation and Links to Noncommutative Geometry. (arXiv:1905.07257v1 [q-fin.MF])

May 19, 2019 by Quantitative Finance at arXiv   Comments (0)

The Accardi-Boukas quantum Black-Scholes equation can be used as an
alternative to the classical approach to finance, and has been found to have a
number of useful benefits. The quantum Kolmogorov backward equations, and
associated quantum Fokker-Planck equations, that arise from this general
framework, are derived using the Hudson-Parthasarathy quantum stochastic
calculus. In this paper we show how these equations can be derived using a
nonlocal approach to quantum mechanics. We show how...

Caveat Emptor: Leveraged Loans and the Credit Cycle

May 19, 2019 by All About Alpha   Comments (0)

AllianceBernstein, the Nashville-based, asset management firm released a white paper on high-yield bank loans. Buying these loans seems, to some investors, a fix for the ongoing low-interest-rate environment. But the white paper is a warning. In two words, “buyer beware.”  The paper is the work of Douglas J. Peebles andRead More