Kyungwoo Song, Wonsung Lee, and Il-Chul Moon. Neural Ideal Point Estimation Network, AAAI Conference on Artificial Intelligence (AAAI 2018), New Orleans, USA, Feb 2-7, 2018

Abstract

Understanding politics is challenging because the politics take the influence from everything. Even we limit ourselves to the political context in the legislative processes; we need a better understanding of latent factors, such as legislators, bills, their ideal points, and their relations. From the modeling perspective, this is difficult 1) because these observations lie in a high dimension that requires learning on low dimensional representations, and 2) because these observations require complex probabilistic modeling with latent variables to reflect the causalities. This paper presents a new model to reflect and understand this political setting, NIPEN, including factors mentioned above in the legislation. We propose two versions of NIPEN: one is a hybrid model of deep learning and probabilistic graphical model, and the other model is a neural tensor model. Our result indicates that NIPEN successfully learns the manifold of the legislative bill texts, and NIPEN utilizes the learned low-dimensional latent variables to increase the prediction performance of legislators' votings. Additionally, by virtue of being a domain-rich probabilistic model, NIPEN shows the hidden strength of the legislators' trust network and their various characteristics on casting votes. 

@misc{song2019neural,

      title={Neural Ideal Point Estimation Network}, 

      author={Kyungwoo Song and Wonsung Lee and Il-Chul Moon},

      year={2019},

      eprint={1904.11727},

      archivePrefix={arXiv},

      primaryClass={cs.SI}

}

Source Website:

https://arxiv.org/abs/1904.11727