The underconfidence with practice effect (UWP) refers to the finding that people’s judgments of learning shift from overconfidence to underconfidence on and after a first study-test trial (Koriat, Ma’ayan, & Sheffer, 2002). Finn and Metcalfe (2007, 2008) proposed that people show UWP because they use their memory of prior test performance as a cue to make subsequent judgments of learning and in...

We develop a new theory for pricing call type American options in complete markets which do not necessarily admit an equivalent local martingale measure. This resolve an open question proposed by Fernholz and Karatzas [Stochastic Portfolio Theory: A Survey, Handbook of Numerical Analysis, 15:89168, 2009].

The tradition of just price theory is generally regarded in contemporary economic literature, and certainly in media editorials and commentary, as an outmoded and naïve approach to commercial life. Price is determined by supply and demand in an adequate market; the rest is sentiment. Yet even so, various intuitions which involve some implicit account of unjust price survive. We suggest that our...

Abstract The optimum portfolio selection for an investor with particular preferences was proven to lie on the normalized efficient frontier between two bounds defined by the Ballestero (1998) bounding theorem. A deeper understanding is possible if the decision-maker is provided with visual and quantitative techniques. Here, we derive useful insights as a way to support investor?s decision-makin...

Upgradeability problems are a critical issue in modern operating systems. The problem consists in finding the “best” solution according to some criteria, to install, remove or upgrade packages in a given installation. This is a difficult problem: the complexity of the upgradeability problem is NP complete and modern OS contain a huge number of packages (often more than 20 000 packages in a Linu...

Portfolio analysis of the publication profile of a unit of interest, ranging from individuals, organizations, to a scientific field or interdisciplinary programs, aims to inform analysts and decision makers about the position of the unit, where it has been, and where it may go in a complex adaptive environment. A portfolio analysis may aim to identify the gap between the current position of an ...

In the early 90’s, donkeys were in danger of extinction as species. In Italy, there were counted few heads of many breeds but, unfortunately, others had already been extinct. With the donkey in danger, there was a risk of disappearance of a part of ecosystem, a biodiversity particularly significant as it represents humans’ history. All countries around the Mediterranean sea, countries of southe...

This paper presents fast algorithms for calculating mean-variance efficient frontiers when the investor can sell securities short as well as buy long, and when a factor and/or scenario model of covariance is assumed. Currently, fast algorithms for factor, scenario, or mixed (factor and scenario) models exist, but (except for a special case of the results reported here) apply only to portfolios ...

We performed an international trial with a newly developed multidimensional assessment protocol for substitution voices based on the European Laryngological Society protocol for ‘common dysphonia’. However, as sound production in SV is largely irregular, we needed some adaptations, in particular of the dimensions perception, acoustic analysis and visual evaluation. The protocol consisted of cli...

Within the past three years, several new AI textbooks have been published, all written by well-known researchers (Dean, Allen, and Aloiminos 1995; Russell and Norvig 1995; Shoham 1994; Ginsberg 1993). Thus, it is not surprising that the authors of each of these textbooks have sought a way to distinguish their own book from the rest. The hook for Stuart Russell and Peter Norvig's new textbook, A...