Results 151 to 160 of about 148,439 (334)
GMM estimation with noncausal instruments under rational expectations [PDF]
There is hope for the generalized method of moments (GMM). Lanne and Saikkonen (2011) show that the GMM estimator is inconsistent, when the instruments are lags of noncausal variables.
Lof, Matthijs
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GMM Estimation of Empirical Growth Models. [PDF]
, 2001 This Paper highlights a problem in using the first-differenced GMM panel data estimator to estimate cross-country growth regressions. When the time series are persistent, the first-differenced GMM estimator can be poorly behaved, since lagged levels of the series provide only weak instruments for subsequent first-differences.
Temple, JRW, Bond, S, Hoeffler, A
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Business Strategy and the Environment, EarlyView.ABSTRACT The aim of this research is to verify whether institutional quality affects the relationship between green innovation and firm efficiency within the high‐tech manufacturing sectors. To estimate jointly the parameters of a stochastic frontier and the coefficients of a model explaining technical inefficiency, we employed the one‐step estimation ...
Mariarosaria Agostino +2 more
wiley +1 more source
, 2018 While tree methods have been popular in practice, researchers and practitioners are also looking for simple algorithms which can reach similar accuracy of trees. In 2010, (Ping Li UAI'10) developed the method of "abc-robust-logitboost" and compared it with other supervised learning methods on datasets used by the deep learning literature. In this study,
openaire +2 more sources
Business Strategy and the Environment, EarlyView.ABSTRACT This study investigates how firms in emerging economies integrate artificial intelligence (AI) with environmental, social, and governance (ESG) practices to enhance biodiversity conservation and circular economy outcomes. It examines the mediating role of corporate social responsibility (CSR) governance and the moderating effect of ...
Suleman Bawa, Simplice A. Asongu
wiley +1 more source
Screaming Sound Detection based on UBM-GMM
, 2017 Sukhwan Jung, Yong-Joo Chung
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GMM Estimation with Noncausal Instruments [PDF]
Lagged variables are often used as instruments when the generalized method of moments (GMM) is applied to time series data. We show that if these variables follow noncausal autoregressive processes, their lags are not valid instruments and the GMM ...
Lanne, Markku, Saikkonen, Pentti
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Characterization of a two‐phase hybrid flotation column
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study explored the performance of a novel hybrid flotation column, which combines the advantages of a mechanically agitated cell with a flotation column and compared the results with a conventional flotation column setup. The experiments were performed in an air/water two‐phase system under varying airflow rates, frother concentrations ...
Pedro Silva Aires +3 more
wiley +1 more source
Revista Facultad de Ingeniería Universidad de Antioquia, 2016 Una categorización automática de los hablantes de acuerdo con su sexo mejora el rendimiento de un detector automático de patologías de voz. Esto se fundamenta en hallazgos que demuestran diferencias perceptuales, acústicas y anatómicas en voces ...
Jorge Andrés Gómez-García +3 more
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