ABSTRACT
With the development of artificial intelligence, big data technology and digital economy, machine learning is widely used in the fields of social economy. This paper introduces double machine learning method for estimation of heterogeneous treatment effects and make an experiment to test its application in economics on an economic example. Using the linear and causal forest algorithms of machine learning, we estimate the parametric and nonparametric models of treatment effects. The results of the experiment indicate that the estimation results of double machine learning method for treatment effects are significant and effective. The fitting results of both parametric and nonparametric models are in line with expectations. Nonparametric model is fitted better. The results of machine learning method are more accurate and the loss is less.
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