...Table of Contents 1. Introduction 1 2. Analysis for problems associated with using models 1 2.1. Model error 1 2.1.1. Wrong or simplifying assumptions 1 2.1.2. Over dependence on historical data 3 2.1.3. Black swans 4 2.2. Implementing a model wrongly 4 3. Improvements of the usage of models 5 4. Conclusion 7 1. Introduction The financial sector plays crucial roles that mobilize savings and allocate credit in economic performance. In recent years, there has been significant technological development within the financial sector, which has enable banks to effectively manage their internal risk through the application of risk models. The use of models to measure risks is the preferred approach by most banks, for example Goldman Sachs applies the Value at Risk model. However, according to Office of the Comptroller of the Currency (2011, p1), “the expanding use of models in all aspects of banking reflects the extent to which models can improve business decisions, but models also come with costs”. Besides, in a recent study (Jorion 2009), it is argued that many financial institutions experienced large losses over the past few decades due to limitations of using sophisticated models. Therefore, it is essential for Andrew Bank Ltd. to have an in-depth understanding of disadvantages relating to using models and solutions to improve these model risks. 2. Analysis for problems associated with using...
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