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This paper analyzes the performance of heteroskedasticity-and-autocorrelation-consistent (HAC) covariance matrix estimators in which the residuals are prewhitened using a vector autoregressive (VAR) filter. We highlight the pitfalls of using an arbitrarily fixed lag order for the VAR filter, and...
Persistent link: https://www.econbiz.de/10013212913
We develop the idea of using Monte Carlo sampling of random portfolios to solve portfolio investment problems. We explore the need for more general optimization tools, and consider the means by which constrained random portfolios may be generated. DeVroye's approach to sampling the interior of a...
Persistent link: https://www.econbiz.de/10013124340
Persistent link: https://www.econbiz.de/10001645100
It is well established that the standard measure of correlation (Pearson’s product-moment) is very sensitive to … correlation measures have been proposed. We do not consider estimators which require trimming (discarding) of some arbitrary … measure of correlation which can be recommended to practitioners alongside the classic Pearson and Spearman measures. The well …
Persistent link: https://www.econbiz.de/10014158275
, the winner would most likely be the correlation coefficient with a significant difference from its first competitor. In …. Therefore, we search for robust correlation coefficients to nonnormality and outliers that could be applied to all applications … and detect influenced or hidden correlations not recognized by the most popular correlation coefficients. We introduce a …
Persistent link: https://www.econbiz.de/10014084103
Canonical correlation analysis (CCA) is a multivariate statistical method which describes the associations between two … correlation. This paper discusses a method for Robust Sparse CCA. Sparse estimation produces canonical vectors with some of their …
Persistent link: https://www.econbiz.de/10014139094
these forecasts. In this paper we analyse these effects on the context of dynamic conditional correlation (DCC) models when … for return, volatilities, conditional correlation and VaR that is robust to outliers. The results are illustrated with …
Persistent link: https://www.econbiz.de/10012956168
In this paper, we consider a robust method of estimating a realized covariance matrix calculated as the sum of cross products of intraday high-frequency returns. According to recent papers in financial econometrics, the realized covariance matrix is essentially contaminated with market...
Persistent link: https://www.econbiz.de/10013037262
This paper presents how the most recent improvements made on covariance matrix estimation and model order selection can be applied to the portfolio optimisation problem. The particular case of the Maximum Variety Portfolio is treated but the same improvements apply also in the other optimisation...
Persistent link: https://www.econbiz.de/10012918912
We introduce the Gerber statistic, a robust measure of correlation. The statistic extends Kendall's Tau by counting the … standard Pearson correlation that is sensitive to outliers or the Spearman correlation that relies on ranking observations …
Persistent link: https://www.econbiz.de/10012890822