Showing 1 - 10 of 186
Economists typically make simplifying assumptions to make the solution and estimation of their highly complex models feasible. These simplifications include approximating the true nonlinear dynamics of the model, disregarding aggregate uncertainty or assuming that all agents are identical. While...
Persistent link: https://www.econbiz.de/10013257224
Persistent link: https://www.econbiz.de/10012315166
Persistent link: https://www.econbiz.de/10014511615
In this paper we survey the most recent advances in supervised machine learning and highdimensional models for time series forecasting. We consider both linear and nonlinear alternatives. Among the linear methods we pay special attention to penalized regressions and ensemble of models. The...
Persistent link: https://www.econbiz.de/10012390030
Persistent link: https://www.econbiz.de/10014537300
Persistent link: https://www.econbiz.de/10014340051
We use supervised learning to identify factors that predict the cross-section of returns and maximum drawdown for stocks in the US equity market. Our data run from January 1970 to December 2019 and our analysis includes ordinary least squares, penalized linear regressions, tree-based models, and...
Persistent link: https://www.econbiz.de/10014433739
This article describes how classification methods on software defect prediction is widely researched due to the need to increase the software quality and decrease testing efforts. However, findings of past researches done on this issue has not shown any classifier which proves to be superior to...
Persistent link: https://www.econbiz.de/10012046984
This study presents an extension of the Gaussian process regression model for multiple-input multiple-output forecasting. This approach allows modelling the cross-dependencies between a given set of input variables and generating a vectorial prediction. Making use of the existing correlations in...
Persistent link: https://www.econbiz.de/10011650323
This thesis addresses three major issues in data mining regarding feature subset selection in large dimensionality domains, plausible reconstruction of incomplete data in cross-sectional applications, and forecasting univariate time series. For the automated selection of an optimal subset of...
Persistent link: https://www.econbiz.de/10009465839