Backtest Criteria For The Quantile Correction Under Model Risk PDF Download
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Author | : Siridej Putsorn |
Publisher | : |
Total Pages | : 154 |
Release | : 2015 |
Genre | : Financial risk |
ISBN | : |
Download Backtest Criteria for the Quantile Correction Under Model Risk Book in PDF, ePub and Kindle
The fact that financial risks cannot be exactly determined but have to be estimated make Value-at-Risk (VaR) models less reliable. Thus far, VaR-model risk have gained increasing concerns and have been addressed in two general ways. The first way is to evaluate risk models using statistical tests, called backtests. In particular, backtests employ a comparison of VaR series and realized returns in the specified period to examine whether risk estimates are appropriate or not. The second way is adjusting VaR for model risk, which one of the recently proposed frameworks is the quantile correction method via the outcome of backtesting. Set of backtest methods are chosen for being adjustment criteria by considering three desirable properties of VaR models, namely, unconditional coverage, independence, and magnitude of violations (losses that exceed VaR). This thesis extend the general quantile correction framework by applying various backtest methods focusing on their statistical power of backtests shown by authors. Five standard data generating models (DGMs) are used to compute VaR of Stock Exchange of Thailand (SET) index daily returns. The results from ex post validation show that model-risk-adjusted series provide better results than original VaR in many cases. With regards to criteria sets, higher-statistical-power backtest criteria sets outperform their counterparts when static VaR models are used.
Author | : |
Publisher | : Lulu.com |
Total Pages | : 294 |
Release | : 2004 |
Genre | : Bank capital |
ISBN | : 9291316695 |
Download International Convergence of Capital Measurement and Capital Standards Book in PDF, ePub and Kindle
Author | : Manfred Gilli |
Publisher | : Academic Press |
Total Pages | : 638 |
Release | : 2019-08-30 |
Genre | : |
ISBN | : 0128150653 |
Download Numerical Methods and Optimization in Finance Book in PDF, ePub and Kindle
Computationally-intensive tools play an increasingly important role in financial decisions. Many financial problems-ranging from asset allocation to risk management and from option pricing to model calibration-can be efficiently handled using modern computational techniques. Numerical Methods and Optimization in Finance presents such computational techniques, with an emphasis on simulation and optimization, particularly so-called heuristics. This book treats quantitative analysis as an essentially computational discipline in which applications are put into software form and tested empirically. This revised edition includes two new chapters, a self-contained tutorial on implementing and using heuristics, and an explanation of software used for testing portfolio-selection models. Postgraduate students, researchers in programs on quantitative and computational finance, and practitioners in banks and other financial companies can benefit from this second edition of Numerical Methods and Optimization in Finance. Introduces numerical methods to readers with economics backgrounds Emphasizes core simulation and optimization problems Includes MATLAB and R code for all applications, with sample code in the text and freely available for download
Author | : Hans Föllmer |
Publisher | : Walter de Gruyter GmbH & Co KG |
Total Pages | : 608 |
Release | : 2016-07-25 |
Genre | : Mathematics |
ISBN | : 3110463458 |
Download Stochastic Finance Book in PDF, ePub and Kindle
This book is an introduction to financial mathematics. It is intended for graduate students in mathematics and for researchers working in academia and industry. The focus on stochastic models in discrete time has two immediate benefits. First, the probabilistic machinery is simpler, and one can discuss right away some of the key problems in the theory of pricing and hedging of financial derivatives. Second, the paradigm of a complete financial market, where all derivatives admit a perfect hedge, becomes the exception rather than the rule. Thus, the need to confront the intrinsic risks arising from market incomleteness appears at a very early stage. The first part of the book contains a study of a simple one-period model, which also serves as a building block for later developments. Topics include the characterization of arbitrage-free markets, preferences on asset profiles, an introduction to equilibrium analysis, and monetary measures of financial risk. In the second part, the idea of dynamic hedging of contingent claims is developed in a multiperiod framework. Topics include martingale measures, pricing formulas for derivatives, American options, superhedging, and hedging strategies with minimal shortfall risk. This fourth, newly revised edition contains more than one hundred exercises. It also includes material on risk measures and the related issue of model uncertainty, in particular a chapter on dynamic risk measures and sections on robust utility maximization and on efficient hedging with convex risk measures. Contents: Part I: Mathematical finance in one period Arbitrage theory Preferences Optimality and equilibrium Monetary measures of risk Part II: Dynamic hedging Dynamic arbitrage theory American contingent claims Superhedging Efficient hedging Hedging under constraints Minimizing the hedging error Dynamic risk measures
Author | : Kevin Dowd |
Publisher | : John Wiley & Sons |
Total Pages | : 395 |
Release | : 2003-02-28 |
Genre | : Business & Economics |
ISBN | : 0470855215 |
Download Measuring Market Risk Book in PDF, ePub and Kindle
The most up-to-date resource on market risk methodologies Financial professionals in both the front and back office require an understanding of market risk and how to manage it. Measuring Market Risk provides this understanding with an overview of the most recent innovations in Value at Risk (VaR) and Expected Tail Loss (ETL) estimation. This book is filled with clear and accessible explanations of complex issues that arise in risk measuring-from parametric versus nonparametric estimation to incre-mental and component risks. Measuring Market Risk also includes accompanying software written in Matlab—allowing the reader to simulate and run the examples in the book.
Author | : Geoffrey McLachlan |
Publisher | : John Wiley & Sons |
Total Pages | : 419 |
Release | : 2004-03-22 |
Genre | : Mathematics |
ISBN | : 047165406X |
Download Finite Mixture Models Book in PDF, ePub and Kindle
An up-to-date, comprehensive account of major issues in finitemixture modeling This volume provides an up-to-date account of the theory andapplications of modeling via finite mixture distributions. With anemphasis on the applications of mixture models in both mainstreamanalysis and other areas such as unsupervised pattern recognition,speech recognition, and medical imaging, the book describes theformulations of the finite mixture approach, details itsmethodology, discusses aspects of its implementation, andillustrates its application in many common statisticalcontexts. Major issues discussed in this book include identifiabilityproblems, actual fitting of finite mixtures through use of the EMalgorithm, properties of the maximum likelihood estimators soobtained, assessment of the number of components to be used in themixture, and the applicability of asymptotic theory in providing abasis for the solutions to some of these problems. The author alsoconsiders how the EM algorithm can be scaled to handle the fittingof mixture models to very large databases, as in data miningapplications. This comprehensive, practical guide: * Provides more than 800 references-40% published since 1995 * Includes an appendix listing available mixture software * Links statistical literature with machine learning and patternrecognition literature * Contains more than 100 helpful graphs, charts, and tables Finite Mixture Models is an important resource for both applied andtheoretical statisticians as well as for researchers in the manyareas in which finite mixture models can be used to analyze data.
Author | : Erricos Kontoghiorghes |
Publisher | : Springer Science & Business Media |
Total Pages | : 425 |
Release | : 2008-02-26 |
Genre | : Business & Economics |
ISBN | : 3540779582 |
Download Computational Methods in Financial Engineering Book in PDF, ePub and Kindle
Computational models and methods are central to the analysis of economic and financial decisions. Simulation and optimisation are widely used as tools of analysis, modelling and testing. The focus of this book is the development of computational methods and analytical models in financial engineering that rely on computation. The book contains eighteen chapters written by leading researchers in the area on portfolio optimization and option pricing; estimation and classification; banking; risk and macroeconomic modelling. It explores and brings together current research tools and will be of interest to researchers, analysts and practitioners in policy and investment decisions in economics and finance.
Author | : Frédéric Vrins |
Publisher | : MDPI |
Total Pages | : 190 |
Release | : 2020-07-01 |
Genre | : Business & Economics |
ISBN | : 3039287605 |
Download Advances in Credit Risk Modeling and Management Book in PDF, ePub and Kindle
Credit risk remains one of the major risks faced by most financial and credit institutions. It is deeply connected to the real economy due to the systemic nature of some banks, but also because well-managed lending facilities are key for wealth creation and technological innovation. This book is a collection of innovative papers in the field of credit risk management. Besides the probability of default (PD), the major driver of credit risk is the loss given default (LGD). In spite of its central importance, LGD modeling remains largely unexplored in the academic literature. This book proposes three contributions in the field. Ye & Bellotti exploit a large private dataset featuring non-performing loans to design a beta mixture model. Their model can be used to improve recovery rate forecasts and, therefore, to enhance capital requirement mechanisms. François uses instead the price of defaultable instruments to infer the determinants of market-implied recovery rates and finds that macroeconomic and long-term issuer specific factors are the main determinants of market-implied LGDs. Cheng & Cirillo address the problem of modeling the dependency between PD and LGD using an original, urn-based statistical model. Fadina & Schmidt propose an improvement of intensity-based default models by accounting for ambiguity around both the intensity process and the recovery rate. Another topic deserving more attention is trade credit, which consists of the supplier providing credit facilities to his customers. Whereas this is likely to stimulate exchanges in general, it also magnifies credit risk. This is a difficult problem that remains largely unexplored. Kanapickiene & Spicas propose a simple but yet practical model to assess trade credit risk associated with SMEs and microenterprises operating in Lithuania. Another topical area in credit risk is counterparty risk and all other adjustments (such as liquidity and capital adjustments), known as XVA. Chataignier & Crépey propose a genetic algorithm to compress CVA and to obtain affordable incremental figures. Anagnostou & Kandhai introduce a hidden Markov model to simulate exchange rate scenarios for counterparty risk. Eventually, Boursicot et al. analyzes CoCo bonds, and find that they reduce the total cost of debt, which is positive for shareholders. In a nutshell, all the featured papers contribute to shedding light on various aspects of credit risk management that have, so far, largely remained unexplored.
Author | : Philippe Jorion |
Publisher | : McGraw Hill Professional |
Total Pages | : 624 |
Release | : 2006-11-09 |
Genre | : Business & Economics |
ISBN | : 0071736921 |
Download Value at Risk, 3rd Ed. Book in PDF, ePub and Kindle
Since its original publication, Value at Risk has become the industry standard in risk management. Now in its Third Edition, this international bestseller addresses the fundamental changes in the field that have occurred across the globe in recent years. Philippe Jorion provides the most current information needed to understand and implement VAR-as well as manage newer dimensions of financial risk. Featured updates include: An increased emphasis on operational risk Using VAR for integrated risk management and to measure economic capital Applications of VAR to risk budgeting in investment management Discussion of new risk-management techniques, including extreme value theory, principal components, and copulas Extensive coverage of the recently finalized Basel II capital adequacy rules for commercial banks, integrated throughout the book A major new feature of the Third Edition is the addition of short questions and exercises at the end of each chapter, making it even easier to check progress. Detailed answers are posted on the companion web site www.pjorion.com/var/. The web site contains other materials, including additional questions that course instructors can assign to their students. Jorion leaves no stone unturned, addressing the building blocks of VAR from computing and backtesting models to forecasting risk and correlations. He outlines the use of VAR to measure and control risk for trading, for investment management, and for enterprise-wide risk management. He also points out key pitfalls to watch out for in risk-management systems. The value-at-risk approach continues to improve worldwide standards for managing numerous types of risk. Now more than ever, professionals can depend on Value at Risk for comprehensive, authoritative counsel on VAR, its application, and its results-and to keep ahead of the curve.
Author | : Bernhard Pfaff |
Publisher | : John Wiley & Sons |
Total Pages | : 448 |
Release | : 2016-08-16 |
Genre | : Mathematics |
ISBN | : 1119119685 |
Download Financial Risk Modelling and Portfolio Optimization with R Book in PDF, ePub and Kindle
Financial Risk Modelling and Portfolio Optimization with R, 2nd Edition Bernhard Pfaff, Invesco Global Asset Allocation, Germany A must have text for risk modelling and portfolio optimization using R. This book introduces the latest techniques advocated for measuring financial market risk and portfolio optimization, and provides a plethora of R code examples that enable the reader to replicate the results featured throughout the book. This edition has been extensively revised to include new topics on risk surfaces and probabilistic utility optimization as well as an extended introduction to R language. Financial Risk Modelling and Portfolio Optimization with R: Demonstrates techniques in modelling financial risks and applying portfolio optimization techniques as well as recent advances in the field. Introduces stylized facts, loss function and risk measures, conditional and unconditional modelling of risk; extreme value theory, generalized hyperbolic distribution, volatility modelling and concepts for capturing dependencies. Explores portfolio risk concepts and optimization with risk constraints. Is accompanied by a supporting website featuring examples and case studies in R. Includes updated list of R packages for enabling the reader to replicate the results in the book. Graduate and postgraduate students in finance, economics, risk management as well as practitioners in finance and portfolio optimization will find this book beneficial. It also serves well as an accompanying text in computer-lab classes and is therefore suitable for self-study.