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popular approaches in this research field is given by Lasso-type methods. An alternative approach is based on information … criteria. In contrast to the Lasso, these methods also work well in the case of highly correlated predictors. However, this …
Persistent link: https://www.econbiz.de/10010291802
random forests, lasso, ridge, deep neural nets, boosted trees, as well as various hybrids and aggregates of these methods (e ….g. a hybrid of a random forest and lasso). We illustrate the application of the general theory through application to the …
Persistent link: https://www.econbiz.de/10011594359
We investigate the finite sample performance of causal machine learning estimators for heterogeneous causal effects at different aggregation levels. We employ an Empirical Monte Carlo Study that relies on arguably realistic data generation processes (DGPs) based on actual data. We consider 24...
Persistent link: https://www.econbiz.de/10011984599
This article introduces lassopack, a suite of programs for regularized regression in Stata. lassopack implements lasso …, square-root lasso, elastic net, ridge regression, adaptive lasso and post-estimation OLS. The methods are suitable for the … (implemented in lasso2), K-fold cross-validation and h-step ahead rolling cross-validation for cross-section, panel and time …
Persistent link: https://www.econbiz.de/10011984641
regular case. We propose to estimate such models by the adaptive lasso maximum likelihood and propose an information criterion …
Persistent link: https://www.econbiz.de/10011995209
We retrieve news stories and earnings announcements of the S&P 100 constituents from two professional news providers, along with ten macroeconomic indicators. We also gather data from Google Trends about these firms' assets as an index of retail investors' attention. Thus, we create an extensive...
Persistent link: https://www.econbiz.de/10011995242
This article considers a methodology for flexibly characterizing the relationship between a response and multiple predictors. Goals are (1) to estimate the conditional response distribution addressing the distributional changes across the predictor space, and (2) to identify important predictors...
Persistent link: https://www.econbiz.de/10009475527
We use lasso methods to shrink, select and estimate the network linking the publicly-traded subset of the world's top …
Persistent link: https://www.econbiz.de/10011440136
In this study, we investigate the estimation and inference on a low-dimensional causal parameter in the presence of high-dimensional controls in an instrumental variable quantile regression. Our proposed econometric procedure builds on the Neyman-type orthogonal moment conditions of a previous...
Persistent link: https://www.econbiz.de/10012696320
sparsity of the spatial weights matrix. The proposed estimation methodology exploits the Lasso estimator and mimics two … larger than the number of observations. We derive convergence rates for the two-step Lasso estimator. Our Monte Carlo …
Persistent link: https://www.econbiz.de/10011755274