Causal Inference from Text: Unveiling Interactions between Variables

• URL: http://arxiv.org/abs/2311.05286v2
• Date: Thu, 23 Nov 2023 12:12:22 GMT
• Title: Causal Inference from Text: Unveiling Interactions between Variables
• Authors: Yuxiang Zhou, Yulan He
• Abstract summary: Existing methods only account for confounding covariables that affect both treatment and outcome. This bias arises from insufficient consideration of non-confounding covariables. In this work, we aim to mitigate the bias by unveiling interactions between different variables.
• Score: 20.677407402398405
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Adjusting for latent covariates is crucial for estimating causal effects from observational textual data. Most existing methods only account for confounding covariates that affect both treatment and outcome, potentially leading to biased causal effects. This bias arises from insufficient consideration of non-confounding covariates, which are relevant only to either the treatment or the outcome. In this work, we aim to mitigate the bias by unveiling interactions between different variables to disentangle the non-confounding covariates when estimating causal effects from text. The disentangling process ensures covariates only contribute to their respective objectives, enabling independence between variables. Additionally, we impose a constraint to balance representations from the treatment group and control group to alleviate selection bias. We conduct experiments on two different treatment factors under various scenarios, and the proposed model significantly outperforms recent strong baselines. Furthermore, our thorough analysis on earnings call transcripts demonstrates that our model can effectively disentangle the variables, and further investigations into real-world scenarios provide guidance for investors to make informed decisions.

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