In this paper we have focused our efforts on comparing the behaviour of two relevance feedback methods in this task LCA and PRF and in checking if our passage based information rerieval (IR) system is useful in a competition with small sized documents. Furthermore we have added an adaptation to this domain based on decompound in single terms those file names which use a Camel Case notation. We ...

We introduce a new theory of belief revision under ambiguity. It is recursive (random variables are evaluated by backward induction) and consequentialist (the conditional expectation any random variable depends only on the values attains conditioning event). Agents experience no change in preferences but sensitive to timing resolution uncertainty. provide three main theorems: first characterize...

A term terminates if all its reduction sequences are of finite length. Weshow four type systems that ensure termination of well-typed π-calculus processes.The systems are obtained by successive refinements of the types of the simply typedπ-calculus. For all (but one of) the type systems we also present upper bounds to thenumber of steps well-typed processes take to terminate. Th...

We introduce ambiguity about the asset value dynamics of a firm into trade-off framework capital structure. characterize investors’ preferences by recursive multiple priors utility. show that equity holders’ aversion significantly reduces optimal leverage and debt capacity. In particular, holders with sufficiently strong perceive their to be “too valuable lose” upon bankruptcy therefore optimal...

Experiments show that in sequential bargaining games (SBG), subjects usually deviate from game-theoretic predictions. Previous explanations have focused on considerations of fairness in the offers, and social utility functions have been formulated to model the data. However, a recent explanation by Ho and Su (2013) for observed deviations from gametheoretic predictions in sequential games is th...

In this paper, we study the optimization problem confronted by an insurance firm whose management can control its cash-balance dynamics by adjusting the underlying premium rate. The firm’s objective is to minimize the total deviation of its cash-balance process to some pre-set target levels by selecting an appropriate premium policy. We study the problem in a general framework assuming the stat...

the rate of time preference plays an important role in discounting instantaneous utility in economic growth models and also in calculating social discount rate in cost-benefit analysis. in empirical researchers, this rate is assumed to be constant. however, the rate of time preference might vary over time. this paper develops a new algorithm to estimate this rate as a varied coefficient for the...