Speculative evaluation can improve the performance of parallel graph reduction systems through increased parallelism. Although speculation is costly, much of the burden can be absorbed by processors which would otherwise be idle. Despite the overhead required for speculative task management, our prototype implementation achieves 70% eeciency for speculative graph reduction, with little impact o...

This paper presents a rule for foreign exchange interventions (FXI), designed to preserve financial stability in floating rate arrangements. The FXI addresses market failure: the absence of hedging solution tail risk (i.e. high volatility). Market impairment or overshoot between two equilibria could generate volatility and threaten due unhedged exposure economy. uses concept Value at Risk (VaR)...

Ambiguous beliefs may lead to speculative trade and bubbles. We demonstrate this by showing that the classical Harrison Kreps (1978) example of among agents with heterogeneous can be replicated having common but ambiguous beliefs. More precisely, we show same asset prices pattern obtained in equilibrium agents' recursive multiple-prior expected utilities set priors. While learning about true pr...

Using a novel proxy of investors’ speculative demand constructed from online search interest in “concept stocks”, we examine how speculative demand affects the returns and trading volume of Chinese stock indices. We find that returns and trading volume increase with the contemporaneous speculative demand. In addition, the high speculative demand causes lower near future returns, while recent hi...

In case of speculative attacks, the central banks' decisions to intervene or not to intervene seem to play an important role for the economic costs of currency crises. The central bank can either abstain from intervening or start an intervention, which in turn can be successful or unsuccessful. Therefore, an adequate analysis of the costs of currency crises has to take into account three differ...

Our CoNLL-2010 speculative sentence detector disambiguates putative keywords based on the following considerations: a speculative keyword may be composed of one or more word tokens; a speculative sentence may have one or more speculative keywords; and if a sentence contains at least one real speculative keyword, it is deemed speculative. A tree kernel classifier is used to assess whether a pote...