Similar Search Results

Rieder, Helmut; Kohl, Matthias; Ruckdeschel, Peter - 2001

We determine the increase of the maximum risk over the minimax risk in the case that the optimally robust estimator for the false radius is used. This is done by numerical solution of the implicit equations which determine optimal robustness, for location, scale, and linear regression models,...

Persistent link: https://www.econbiz.de/10009616786

Credit contagion and aggregate losses

Giesecke, Kay; Weber, Stefan - 2002

theory of interacting particle systems. We clarify the structure of the equilibrium joint rating distribution using ergodic … losses ; voter model ; Choquet theory ; ergodic decomposition ; re-scaling …

Persistent link: https://www.econbiz.de/10009627288

Low-probability insurance decisions : the role of concern

Schade, Christian D.; Kunreuther, Howard; Kaas, Klaus Peter - 2002

On the basis of a real high stakes insurance experiment with small probabilities of losses, we demonstrate that concern is a more important driver of WTP for insurance than subjective probability estimates when there is ambiguity surrounding the estimate. Concern is still important when...

Persistent link: https://www.econbiz.de/10009621421

A class of Health-Jarrow-Morton models in which the unbiased expectations hypothesis holds

Riedel, Frank - 1997

The unbiased expectations hypothesis states that forward rates are unbiased estimates for future short rates. Cox, Ingersoll and Ross [1] conjectured that this hypothesis should be inconsistent with the absence of arbitrage possibilities. Using the framework of Heath, Jarrow and Morton [4] we...

Persistent link: https://www.econbiz.de/10009632605

Optional decompositions under constraints

Föllmer, Hans; Kramkov, D. O. - 1997

Motivated by a hedging problem in mathematical finance, El Karoui and Quenez [7] and Kramkov [14] have developed optional versions of the Doob-Meyer decomposition which hold simultaneously for all equivalent martingale measures. We investigate the general structure of such optional...

Persistent link: https://www.econbiz.de/10009657127

Lag selection in subset VAR models with an application to a US monetary system

Brüggemann, Ralf; Lütkepohl, Helmut - 2000

Alternative modeling strategies for specifying subset VAR models are considered. It is shown that under certain conditions a testing procedure based on t-ratios is equivalent to sequentially eliminating lags that lead to the largest improvement in a prespecified model selection criterion. A...

Persistent link: https://www.econbiz.de/10009583885

A fractionally integrated model with a mean shift for the US and the UK real oil prices

Gil-Alaña, Luis A. - 2000

In this article we model the log of the U.S. and the U.K. real oil prices in terms of fractionally integrated processes with a mean shift. We use different versions of the tests of Robinson (1994), which have standard null and local limit distributions. The results indicate that if we model the...

Persistent link: https://www.econbiz.de/10009611543

Modeling the US short-term interest rate by mixture autoregressive processes

Lanne, Markku; Saikkonen, Pentti - 2000

A new kind of mixture autoregressive model with GARCH errors is introduced and applied to the U.S. short-term interest rate. According to the diagnostic tests developed in the paper and further informal checks the model is capable of capturing both of the typical characteristics of the...

Persistent link: https://www.econbiz.de/10009612047

Cost competition, fragmentation and globalization

Burda, Michael C.; Dluhosch, Barbara - 2001 - Rev.

This paper proposes a model in which the removal of barriers to trade and factor mobility is associated with endogenous fragmentation of the value-added chain. Fragmentation is the outcome of cost competition - the profit-maximizing choice of cost structure by monopolistically competitive firms....

Persistent link: https://www.econbiz.de/10009613595

Preemption in capacity and price determination : a study of endogenous timing of decisions for homogeneous markets

Güth, Sandra; Güth, Werner - 1998 - Rev.

The theory of industrial organization has experienced an impressive boom by using the methods of (non-cooperative) game … theory. The conclusions depend, however. crucially on subtle details of the market decision processes about which there exist … serve customers, but at higher costs when demand exceeds "capacity". Our model allows for preemption in "capacity" as well …

Persistent link: https://www.econbiz.de/10009578566