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Dynamic rational inattention problems used to be difficult to solve. This paper provides simple, analytical results for dynamic rational inattention problems. We start from the benchmark rational inattention problem. An agent tracks a variable of interest that follows a Gaussian process. The...
Persistent link: https://www.econbiz.de/10011636897
This note is concerned with two recent agent-based models of speculative dynamics from the literature, one by Gaunersdorfer and Hommes and the other by He and Li. At short as well as long lags, both of them display an autocorrelation structure in absolute and squared returns that comes...
Persistent link: https://www.econbiz.de/10003738658
Simulations of agent-based models have shown that the stylized facts (unit-root, fat tails and volatility clustering) of financial markets have a possible explanation in the interactions among agents. However, the complexity, originating from the presence of non-linearity and interactions, often...
Persistent link: https://www.econbiz.de/10003392142
Simulated models suffer intrinsically from validation and comparison problems. The choice of a suitable indicator quantifying the distance between the model and the data is pivotal to model selection. However, how to validate and discriminate between alternative models is still an open problem...
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We propose an empirical test to depict possible endogenous cycles within Heterogeneous Agent Models (HAMs). We consider a 2-type HAM into a standard small-scale dynamic asset pricing framework. On the one hand, fundamentalists base their expectations on the deviation of fundamental value from...
Persistent link: https://www.econbiz.de/10013225981
Extensive empirical studies on the rationality of expectations as defined by Muth have revolved around tests on a … single series of forecast data, with results differing widely across studies. Rationality as an assessor characteristic has … long been of interest in economic theory and practice. However, as non-replicated events, single series tests do not …
Persistent link: https://www.econbiz.de/10014138043