This paper considers a simple model of credit risk and derives the limit distribution of losses under different … results obtained indicate that if firm-specific risk exposures (including their default thresholds) are heterogeneous but come … from a common parameter distribution, for sufficiently large portfolios there is no scope for further risk reduction …

use of model averaging techniques as a way of dealing with the risk of inadvertently using false models in portfolio … considered and a simple Value-at-Risk (VaR) diagnostic test is proposed for individual as well as average ̕models and its exact …

use of model averaging techniques as a way of dealing with the risk of inadvertently using false models in portfolio … considered and a simple Value-at-Risk (VaR) diagnostic test is proposed for individual as well as 'average' models and its exact …

This paper considers a simple model of credit risk and derives the limit distribution of losses under different … results obtained indicate that if firm-specific risk exposures (including their default thresholds) are heterogeneous but come … from a common parameter distribution, for sufficiently large portfolios there is no scope for further risk reduction …

use of model averaging techniques as a way of dealing with the risk of inadvertently using false models in portfolio … management. Evaluation of volatility models is then considered and a simple Value-at-Risk (VaR) diagnostic test is proposed for …