A Confidence Representation Theorem for Ambiguous Sources with Applications to Financial Markets and Trade Algorithm
Ryerson University - Ted Rogers School of Management, Institute for Innovation and Technology Management; University of Cape Town - Faculty of Commerce - School of Economics
May 4, 2012
Proceedings of Foundations and Applications of Utility, Risk and Decision Theory (FUR) XV. Forthcoming
This paper extends the solution space for decision theory by introducing a behavioural operator that (1) transforms probability domains, and (2) generates sample paths for confidence from catalytic fuzzy or ambiguous sources. First, we prove that average sample paths for confidence/sentiment, generated from within and across source sets, differ. So conjugate priors should be used to mitigate the difference. Second, we identify loss aversion as the source of Langevin type friction that explains the popularity of Ornstein-Uhlenbeck processes for modeling mean reversion of sample paths for behaviour. However, in large markets, ergodic confidence levels, imbued by Lichtenstein and Slovic (1973) and Yaari (1987) type preference reversal operations, support our large deviation theory of bubbles, crashes and chaos in behavioral dynamical systems. Third, simulation of the model confirms that the distribution of priors, on Gilboa and Schmeilder (1989) source sets, controls confidence momentum and term structure of fields of confidence. For example, it explains the asset pricing ''anomaly" of sensitivity of momentum trading strategies to starting dates in Moskowitz, Ooi, Pedersen (2012). Fourth, we provide several applications including but not limited to a sentiment based computer trading algorithm. For instance, our computer generated field of confidence mimics trends in CBOE VIX daily sentiment index, and survey driven Gallup Economic Confidence Index (GEDCI) sounding in Tversky and Wakker (1995) type impact events. We show how GDECI splits VIX into source sets that depict term structures of confidence for relative hope and fear. And identify a VIX source set arbitrage strategy by classifying each set according to its risk attitude, and then use the "confidence beta" of each set to explain differences in price moves.
Number of Pages in PDF File: 51
Keywords: confidence, chaos, ambiguity, momentum, impact events, ergodic theory, large deviations
JEL Classification: C62, C65, D81, G00Accepted Paper Series
Date posted: May 1, 2012 ; Last revised: May 14, 2012
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