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111.
Maximilian?Ga? Kathrin?GlauEmail author Mirco?Mahlstedt Maximilian?Mair 《Finance and Stochastics》2018,22(3):701-731
Recurrent tasks such as pricing, calibration and risk assessment need to be executed accurately and in real time. We concentrate on parametric option pricing (POP) as a generic instance of parametric conditional expectations and show that polynomial interpolation in the parameter space promises to considerably reduce run-times while maintaining accuracy. The attractive properties of Chebyshev interpolation and its tensorized extension enable us to identify broadly applicable criteria for (sub)exponential convergence and explicit error bounds. The method is most promising when the computation of the prices is most challenging. We therefore investigate its combination with Monte Carlo simulation and analyze the effect of (stochastic) approximations of the interpolation. For a wide and important range of problems, the Chebyshev method turns out to be more efficient than parametric multilevel Monte Carlo. We conclude with a numerical efficiency study. 相似文献
112.
We study the explosion of the solutions of the SDE in the quasi-Gaussian HJM model with a CEV-type volatility. The quasi-Gaussian HJM models are a popular approach for modeling the dynamics of the yield curve. This is due to their low-dimensional Markovian representation which simplifies their numerical implementation and simulation. We show rigorously that the short rate in these models explodes in finite time with positive probability, under certain assumptions for the model parameters, and that the explosion occurs in finite time with probability one under some stronger assumptions. We discuss the implications of these results for the pricing of the zero coupon bonds and Eurodollar futures under this model. 相似文献
113.
The aim of this paper is threefold. Firstly, we study stochastic evolution equations (with the linear part of the drift being a generator of a \(C_{0}\)-semigroup) driven by an infinite-dimensional cylindrical Wiener process. In particular, we prove, under some sufficient conditions on the coefficients, the existence and uniqueness of solutions for these stochastic evolution equations in a class of Banach spaces satisfying the so-called \(H\)-condition. Moreover, we analyse the Markov property of the solutions.Secondly, we apply the abstract results obtained in the first part to prove the existence and uniqueness of solutions to the Heath–Jarrow–Morton–Musiela (HJMM) equations in weighted Lebesgue and Sobolev spaces.Finally, we study the ergodic properties of the solutions to the HJMM equations. In particular, we find a sufficient condition for the existence and uniqueness of invariant measures for the Markov semigroup associated to the HJMM equations (when the coefficients are time-independent) in the weighted Lebesgue spaces.Our paper is a modest contribution to the theory of financial models in which the short rate can be undefined. 相似文献
114.
115.
Frederick van?der Ploeg 《International Tax and Public Finance》2012,19(4):509-538
A windfall in a developing economy with capital scarcity and investment adjustment costs facing a temporary windfall should be used to give more consumption to poorer present generations and to speed up development by ramping up public investment and paying off debt taking due account of the increasing inefficiency as investment gets ramped up. The optimal strategy requires negative genuine saving; the permanent income requires zero genuine saving. The optimal real consumption increments are smaller once one allows for absorption constraints resulting from Dutch disease and sluggish adjustment of ‘home-grown’ public capital. 相似文献
116.
117.
While research and development (R&D) investment has been procyclical in the post-war period, recent literature suggests that
the optimal path for R&D is countercyclical, and that the economy would be better off by subsidizing R&D in recessions. The
objective of this paper is to analyze the welfare effects of distortions in the intertemporal allocation of R&D resources
and to compare diverse policy interventions so as to improve social welfare. To this end, we introduce a calibrated dynamic
stochastic general equilibrium model with Schumpeterian endogenous growth that is capable of explaining the observed procyclicality
of R&D. Our results show that the cost of business cycles is lower in the decentralized economy with procyclical R&D than
in the efficient allocation with countercyclical R&D. This is because the suboptimal propagation of shocks in the decentralized
equilibrium offsets some of the existing steady-state distortions. In this second-best context, countercyclical R&D subsidies have no positive effect on welfare. In contrast, fiscal policies aimed at restoring
the optimal steady-state produce large welfare gains. 相似文献
118.
We report on an experiment conducted to evaluate the effects of varying the way in which market information is presented to
participants in laboratory Cournot duopolies. We find that the most standard variations, which are the use of a profit table
or a profit calculator, yield indistinguishable performance. However, the addition of a best-response option to the profit
calculator tends to increase aggregate output to the Cournot level and decrease the incidence of tacit collusion. 相似文献
119.
Arminda M. Finisterra do Pa?o Jo?o Matos Ferreira M��rio Raposo Ricardo Gouveia Rodrigues Anabela Dinis 《Journal of International Entrepreneurship》2011,9(1):20-38
This paper aims to identify some factors that may be explaining differences among secondary students in start-up intentions.
For that, the study develops an entrepreneurial intention model sustained by the use of Azjen’s Theory of Planned Behaviour
(TBP). Using a sample of students aged between 14 and 15 years old, a questionnaire based on the Li?án and Chen’s Entrepreneurial
Intention Questionnaire was administrated. The purpose is to test a model of entrepreneurial intention using structural equations.
The findings point that TPB is an appropriate tool to model the development of entrepreneurial intention through pedagogical
processes and learning contexts. The education and training should centre itself much more in changing personal attitudes
than in knowledge. Moreover, it is desirable that an entrepreneurship educational programme could contribute to the development
of competences related to entrepreneurship, social and civic skills, and cultural awareness. 相似文献
120.
In this paper, we take up an approach of (Lindberg, in Bernoulli, 15(2):464–474, 2009) who introduced a new parameterization
of the Black–Scholes model that allows for an easy solution of the continuous-time Markowitz mean-variance problem. We generalize
the results of (Lindberg, in Bernoulli, 15(2):464–474, 2009) to a jump-diffusion market setting and slightly correct the proof
and the assertion of the main result. Further, we demonstrate the implications of the Lindberg parameterization for the stock
price drift vector in different market settings, analyse the dependence of the optimal portfolio from jump and diffusion risk
and finally indicate how to use the method. We particularly also show how the optimal strategy can be obtained with the restricted
use of historical data. 相似文献