This paper proposes a novel method for assessing the predictability of energy market time series, by predicting the entropy of the series. According to conventional entropy-based analysis where the entropy is always ex-post estimated), high entropy values characterize unpredictable series, while...

A new way of looking at the problem of the underground economy is to consider the productive structure of a regular firm and that of an underground firm, completing the description of the microeconomic behaviour of the agents with the formalization of the behaviour of the state in the presence...