Showing 1 - 10 of 281
Persistent link: https://www.econbiz.de/10001353351
This paper introduces a general class of combined neural network-GARCH models suitable to financial time series analysis. We put special emphasis on designing a full model-building cycle for this class of models that includes all stages of econometric modelling (specification, estimation and...
Persistent link: https://www.econbiz.de/10014058559
Four model selection methods are applied to the problem of predicting business cycle turning points: equally-weighted forecasts, Bayesian model averaged forecasts, and two models produced by the machine learning algorithm boosting. The model selection algorithms condition on different economic...
Persistent link: https://www.econbiz.de/10013035247
This paper proposes a predictive maintenance policy using modified failure mode effect and criticality analysis (Mod-FMECA) technique. FMECA is used to identify failure modes, reasons, effects and criticality of the system (machine/plant) but in Mod-FMECA in addition to the analysis carried for...
Persistent link: https://www.econbiz.de/10012987127
This study tested the unbiased pricing hypothesis in the copper, aluminum, nickel, and lead markets for the period October 2011 to May 2021. Wavelets and a time-varying parameter model with Bayesian priors were the primary tools. Each metal market was found to be weak market efficient, the...
Persistent link: https://www.econbiz.de/10014238503
This paper systematically studies the use of mixed-frequency data sets and suggests that the use of high frequency data in forecasting economic aggregates can improve forecast accuracy. The best way of using this information is to build a single model, for example, an ARMA model with missing...
Persistent link: https://www.econbiz.de/10010503744
The predictability of a high-dimensional time series model in forecasting with large information sets depends not only on the stability of parameters but also depends heavily on the active covariates in the model. Since the true empirical environment can change as time goes by, the variables...
Persistent link: https://www.econbiz.de/10012827733
The usual procedure for developing linear models to predict any kind of target variable is to identify a subset of most important predictors and to estimate weights that provide the best possible solution for a given sample. The resulting “optimally” weighted linear composite is then used...
Persistent link: https://www.econbiz.de/10012974080
Most of predictive maintenance technologies are inaccessible to small scale and medium scale industries due to their demanding cost. This paper proposes a predictive maintenance policy using failure mode effect and criticality analysis (FMECA) and non-homogeneous Poisson process (NHPP) models...
Persistent link: https://www.econbiz.de/10014034899
We survey the nascent literature on machine learning in the study of financial markets. We highlight the best examples of what this line of research has to offer and recommend promising directions for future research. This survey is designed for both financial economists interested in grasping...
Persistent link: https://www.econbiz.de/10014349681