Showing 1 - 10 of 15,738
This paper estimates the stock market and its price dynamics in terms of the multifractional Brownian motion. In our analysis, we use the financial dataset of the Dow Jones Industrial Average (DJI) time series from March 2009 to June 2015. First, we briefly introduce the definitions and...
Persistent link: https://www.econbiz.de/10012840307
It is well-known that outliers exist in the type of multivariate data used by financial practitioners for portfolio construction and risk management. Typically, outliers are addressed prior to model fitting by applying some combination of trimming and/or Winsorization to each individual...
Persistent link: https://www.econbiz.de/10012946531
The aim of this paper is to apply the methods of Symbolic Time Series Analysis (STSA) to series of inflation from a group of Latin-American economies. Starting with a partition of two inflation regimes, we use data symbolization for identifying temporal patterns. Afterwards the statistical...
Persistent link: https://www.econbiz.de/10014062841
Measuring bias is important as it helps identify flaws in quantitative forecasting methods or judgmental forecasts. It … can, therefore, potentially help improve forecasts. Despite this, bias tends to be under represented in the literature …: many studies focus solely on measuring accuracy. Methods for assessing bias in single series are relatively well known and …
Persistent link: https://www.econbiz.de/10013314570
almost all these papers ignore the bias in the estimated standard errors that serial correlation introduces. This is … serially correlated, which will exacerbate the bias in standard errors. To illustrate the severity of this issue, we randomly …
Persistent link: https://www.econbiz.de/10001620672
In this note we provide the analytical gradient of the full model likelihood of the DCC specification of Engle (2002), the generalized version of Cappiello et al. (2006), and of the cDCC model of Aielli (2008)
Persistent link: https://www.econbiz.de/10013132023
In 1979, the Danish mathematician Georg Rasch recounted a 1959 visit with his former teacher, and later economics Nobel Prize winner, Ragnar Frisch. At this time, Frisch prompted Rasch to formalize his work in a separability theorem. Previously unnoted is that Frisch's close colleague, Irving...
Persistent link: https://www.econbiz.de/10013132627
The prediction of the outstanding loss liabilities for a non-life run-off portfolio as well as the quantification of the prediction error is one of the most important actuarial tasks in non-life insurance. In this paper we consider this prediction problem in a multivariate context. More...
Persistent link: https://www.econbiz.de/10013106533
The model derives risky corporate bond prices (or equivalently credit spreads) subject to credit default and migration risk, based on an extended version of the Jarrow, Lando and Turnbull model, under a risk-neutral framework, as a result of the simulation of a continuous time, time-homogeneous...
Persistent link: https://www.econbiz.de/10013067094
Hedging of illiquid financial instruments is carried out with liquid instruments that, as a rule, have simpler payoff functions. For example, hedging of Asian or long-dated put options is carried out with vanilla puts, hedging of Bermuda swaptions is done with vanilla swaptions, etc. This kind...
Persistent link: https://www.econbiz.de/10013000625