MoneyScience News |
- Blog Post: PatrickBurns: The half variance approximation for mean returns
- Published / Preprint: Exact record and order statistics of random walks via first-passage ideas. (arXiv:1305.0639v1 [cond-mat.stat-mech])
- Published / Preprint: Delusions of Success: Comment on Dan Lovallo and Daniel Kahneman. (arXiv:1305.0741v1 [q-fin.GN])
- Published / Preprint: Kinetic exchange models: From molecular physics to social science. (arXiv:1305.0768v1 [physics.soc-ph])
- Published / Preprint: The Effect of Growth On Equality in Models of the Economy. (arXiv:1305.0794v1 [q-fin.GN])
- Blog Post: Falkenblog: Weekly Roundup
- Blog Post: ThePracticalQuant: Scalable streaming analytics using a single-server
| Blog Post: PatrickBurns: The half variance approximation for mean returns Posted: 06 May 2013 01:08 AM PDT What’s that thing about arithmetic and geometric returns and the variance?read more... Visit MoneyScience for the Complete Article.      |
| Posted: 05 May 2013 05:30 PM PDT While records and order statistics of independent and identically distributed (i.i.d.) random variables X_1, ..., X_N are fully understood, much less is known for strongly correlated random variables, which is often the situation encountered in statistical physics. Recently, it was shown, in a series of works, that one-dimensional random walk (RW) is an interesting laboratory where the influence... Visit MoneyScience for the Complete Article.    |
| Posted: 05 May 2013 05:30 PM PDT Dan Lovallo and Daniel Kahneman must be commended for their clear identification of causes and cures to the planning fallacy in "Delusions of Success: How Optimism Undermines Executives' Decisions" (HBR July 2003). Their look at overoptimism, anchoring, competitor neglect, and the outside view in forecasting is highly useful to executives and forecasters. However, Lovallo and Kahneman underrate... Visit MoneyScience for the Complete Article.    |
| Posted: 05 May 2013 05:30 PM PDT We discuss several multi-agent models that have their origin in the kinetic exchange theory of statistical mechanics and have been recently applied to a variety of problems in the social sciences. This class of models can be easily adapted for simulations in areas other than physics, such as the modeling of income and wealth distributions in economics and opinion dynamics in sociology. Visit MoneyScience for the Complete Article.    |
| Posted: 05 May 2013 05:30 PM PDT We investigate the relation between economic growth and equality in a modified version of the agent-based asset exchange model (AEM). The modified model is a driven system that for a range of parameter space is effectively ergodic in the limit of an infinite system. We find that the belief that "a rising tide lifts all boats" does not always apply, but the effect of growth on the wealth... Visit MoneyScience for the Complete Article.    |
| Blog Post: Falkenblog: Weekly Roundup Posted: 05 May 2013 04:54 PM PDT If any of you are puzzled by the low inflation rate, consider that in 2005, the Fed convinced themselves that house prices weren't in a bubble because a hedonically adjusted housing price index showed little movement. Sort of like our consumer price indices. From a Federal Reserve meeting that focused on home price appreciation circa 2005:For example, over the four years from 2000 to 2004,... Visit MoneyScience for the Complete Article.    |
| Blog Post: ThePracticalQuant: Scalable streaming analytics using a single-server Posted: 05 May 2013 10:36 AM PDT [A version of this post appears on the O'Reilly Strata blog.]For many organizations real-time1 analytics entails complex event processing systems (CEP) or newer distributed stream processing frameworks like Storm, S4, or Spark Streaming. The latter have become more popular because they are able to scale (ingest) massive amounts of data, and fit nicely with Hadoop and other cluster computing... Visit MoneyScience for the Complete Article.    |
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