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分类依据与纠错

AI 根据所提供的论文材料归类:摘要明确研究离散选择模型,并利用社会网络刻画从众、传播等选择关联。

反馈分类问题

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者
Kiran Tomlinson
Austin R. Benson

离散选择的图方法

研究问题
如何将完整社会网络信息纳入离散选择模型,在减少手工特征依赖的同时改善偏好学习,并理解社会情境与选择的关系?
方法与思路
作者设计学习选择者表示、正则化选择参数和直接由网络构造预测三类图方法,在选举、应用安装使用及合成数据上比较。
材料陈述的贡献
摘要称,社会网络结构可改善多项逻辑模型预测,安装与使用呈现不同社会关联,合成数据还显示利用社会信息的样本复杂度收益。
阅读关注点
核对网络信息进入效用或预测的方式、与多项逻辑模型的衔接、样本划分是否避免信息泄漏,以及社会影响的因果证据。
阅读边界
这是 arXiv 预印本,同行评审或期刊接收未获核实;摘要未说明社会影响的识别设计,预测改善不能直接排除同质性选择等解释。

原文摘要

Choices made by individuals have widespread impacts--for instance, people choose between political candidates to vote for, between social media posts to share, and between brands to purchase--moreover, data on these choices are increasingly abundant. Discrete choice models are a key tool for learning individual preferences from such data. Additionally, social factors like conformity and contagion influence individual choice. Traditional methods for incorporating these factors into choice models do not account for the entire social network and require hand-crafted features. To overcome these limitations, we use graph learning to study choice in networked contexts. We identify three ways in which graph learning techniques can be used for discrete choice: learning chooser representations, regularizing choice model parameters, and directly constructing predictions from a network. We design methods in each category and test them on real-world choice datasets, including county-level 2016 US election results and Android app installation and usage data. We show that incorporating social network structure can improve the predictions of the standard econometric choice model, the multinomial logit. We provide evidence that app installations are influenced by social context, but we find no such effect on app usage among the same participants, which instead is habit-driven. In the election data, we highlight the additional insights a discrete choice framework provides over classification or regression, the typical approaches. On synthetic data, we demonstrate the sample complexity benefit of using social information in choice models.

笔记与分组