Data for: Heard the News? Environmental Policy and Clean Investments
收藏DataONE2025-05-21 更新2025-11-01 收录
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https://search.dataone.org/view/sha256:a77dd2f72d9beb0dce2084fa4314d74b6eceeaeaec7b109318e798494793e331
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资源简介：
The dataset provides the data of the EnvP, a news-based index of environmental and climate policy in the US, monthly 1981-2019. The method to build the EnvP index applies text-mining machine learning techniques to identify articles referring to climate and environmental policy from ten leading US newspapers.
创建时间：
2025-10-29
