{"type": "article", "title": "Two-Stage Machine Learning for Nonparametric Instrumental Variable Regression", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/two-stage-machine-learning-for-nonparametric-instrumental-variable-regression", "original_source": "https://economics.mit.edu/node/5399", "published": "2026-08-26T14:36:30+00:00", "accessed": "2026-08-26", "id": "two-stage-machine-learning-for-nonparametric-instrumental-variable-regression"}