arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.11201cs.LGcs.CE
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面向下游审计任务的会计数据表示的多视角对比自监督学习

Multi-view Contrastive Self-Supervised Learning of Accounting Data Representations for Downstream Audit Tasks

University of St. Gallen(圣加仑大学);Deutsche Bundesbank(德国联邦银行)

Marco Schreyer, Timur Sattarov, Damian Borth

摘要:

国际审计标准要求直接评估财务报表的基本会计事项,即日记账分录。近年来,在人工智能发展的推动下,受深度学习启发的审计技术在审计大量期刊条目数据领域出现。如今,大多数此类方法依赖于一组专门的模型,每个模型都针对特定的审计任务进行了训练。与此同时,在进行财务报表审计时,审计小组面临着(一)具有挑战性的时间预算限制,(二)大量的文件义务,以及(三)严格的模型可解释性要求。因此,审计员在整个审计工作中倾向于只采用一种最好是“多用途”的模式。我们提出了一个对比自监督学习框架,旨在学习审计任务不变的会计数据表示,以满足这一要求。该框架包括利用日志条目数据的属性特征的故意交互数据增强策略。我们在两个真实世界的城市支付数据集上评估了该框架,并将学习到的表示转移到三个下游审计任务:异常检测,审计抽样和审计文档。我们的实验结果提供了经验证据,该框架提供了学习丰富的和可解释的“多任务”表示,以提高审计效率的能力。

英文摘要:

International audit standards require the direct assessment of a financial statement's underlying accounting transactions, referred to as journal entries. Recently, driven by the advances in artificial intelligence, deep learning inspired audit techniques have emerged in the field of auditing vast quantities of journal entry data. Nowadays, the majority of such methods rely on a set of specialized models, each trained for a particular audit task. At the same time, when conducting a financial statement audit, audit teams are confronted with (i) challenging time-budget constraints, (ii) extensive documentation obligations, and (iii) strict model interpretability requirements. As a result, auditors prefer to harness only a single preferably `multi-purpose' model throughout an audit engagement. We propose a contrastive self-supervised learning framework designed to learn audit task invariant accounting data representations to meet this requirement. The framework encompasses deliberate interacting data augmentation policies that utilize the attribute characteristics of journal entry data. We evaluate the framework on two real-world datasets of city payments and transfer the learned representations to three downstream audit tasks: anomaly detection, audit sampling, and audit documentation. Our experimental results provide empirical evidence that the proposed framework offers the ability to increase the efficiency of audits by learning rich and interpretable `multi-task' representations.

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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