arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.09397cs.LGcs.AIstat.ML
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预测人类决策的认知模型先验

Cognitive Model Priors for Predicting Human Decisions

University of California, Berkeley(加州大学伯克利分校);Princeton University(普林斯顿大学)

David D. Bourgin, Joshua C. Peterson, Daniel Reichman, Thomas L. Griffiths, Stuart J. Russell

摘要:

人类的决策是所有经济行为的基础。在过去的四十年里,人类在不确定性下的决策一直由基于前景理论的理论模型来解释,前景理论是一个获得诺贝尔经济学奖的框架。然而,这种理论模型发展缓慢,强大的,高精度的人类决策预测模型仍然是一个挑战。虽然机器学习是解决这些问题的自然候选者,但目前还不清楚它能在多大程度上改善当前理论获得的预测。我们认为,这主要是由于数据稀缺,因为嘈杂的人类行为需要大量的样本量才能被现成的机器学习方法准确捕获。为了解决这个问题,需要的是具有适当归纳偏差的机器学习模型,用于捕获人类行为,以及更大的数据集。我们为此提供了两个贡献:首先,我们通过用认知模型生成的合成数据预训练神经网络来构建“认知模型先验”(即,由认知心理学家开发的理论模型)。我们发现,在真实人类决策的小数据集上对这些网络进行微调,在两个基准数据集上得到了前所未有的最先进的改进。其次,我们提出了第一个用于人类决策的大规模数据集,包含超过240,000个人类判断,涉及13,000多个决策问题。该数据集揭示了认知模型先验有用的情况,并为不确定性下人类决策的基准预测提供了新的标准。

英文摘要:

Human decision-making underlies all economic behavior. For the past four decades, human decision-making under uncertainty has continued to be explained by theoretical models based on prospect theory, a framework that was awarded the Nobel Prize in Economic Sciences. However, theoretical models of this kind have developed slowly, and robust, high-precision predictive models of human decisions remain a challenge. While machine learning is a natural candidate for solving these problems, it is currently unclear to what extent it can improve predictions obtained by current theories. We argue that this is mainly due to data scarcity, since noisy human behavior requires massive sample sizes to be accurately captured by off-the-shelf machine learning methods. To solve this problem, what is needed are machine learning models with appropriate inductive biases for capturing human behavior, and larger datasets. We offer two contributions towards this end: first, we construct "cognitive model priors" by pretraining neural networks with synthetic data generated by cognitive models (i.e., theoretical models developed by cognitive psychologists). We find that fine-tuning these networks on small datasets of real human decisions results in unprecedented state-of-the-art improvements on two benchmark datasets. Second, we present the first large-scale dataset for human decision-making, containing over 240,000 human judgments across over 13,000 decision problems. This dataset reveals the circumstances where cognitive model priors are useful, and provides a new standard for benchmarking prediction of human decisions under uncertainty.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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