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Cost-sensitive machine learning to support startup investment decisions 成本敏感型机器学习为初创企业投资决策提供支持
Q1 Economics, Econometrics and Finance Pub Date : 2024-02-13 DOI: 10.1002/isaf.1548
Ronald Setty, Yuval Elovici, Dafna Schwartz

In 2022, global startup investments exceeded US$445 billion, sourced from entities like venture capital (VC) funds, angel investors, and equity crowdfunding. Despite their role in driving innovation, startup investments often fall short of S&P 500 returns. Surprisingly, the potential of artificial intelligence (AI) remains untapped by investors, despite AI's growing sway in financial decision-making. Our empirical analysis predicts the success of 10,000 Israeli startups, utilizing diverse machine learning models. Unlike prior research, we employ the MetaCost algorithm to convert models into cost-sensitive variants, minimizing total cost instead of total error. This innovative approach enables varied costs linked to different prediction errors. Our results underscore that these cost-sensitive machine learning models significantly reduce risk for VC funds and startup investors compared to traditional ones. Furthermore, these models provide investors with a distinct capability to tailor their risk profiles, aligning predictions with their risk appetite. However, while cost-sensitive machine learning reduces risk, it may limit potential gains by predicting fewer successful startups. To address this, we propose methods to enhance successful startup identification, including aggregating outcomes from multiple MetaCost models, particularly advantageous for smaller deal flows. Our research advances AI's role in startup investing, presenting a pivotal tool for investors navigating this domain.

2022 年,全球初创企业投资额超过了 4450 亿美元,这些投资来自风险投资(VC)基金、天使投资人和股权众筹等实体。尽管初创企业投资在推动创新方面发挥着重要作用,但它们的回报往往低于 S&P 500 指数。令人惊讶的是,尽管人工智能(AI)在金融决策中的影响力与日俱增,但投资者仍未开发人工智能的潜力。我们的实证分析利用各种机器学习模型预测了 10,000 家以色列初创企业的成功。与之前的研究不同,我们采用 MetaCost 算法将模型转换为成本敏感型变体,最大限度地降低总成本而不是总误差。这种创新方法使不同的成本与不同的预测误差挂钩。我们的研究结果表明,与传统模型相比,这些对成本敏感的机器学习模型能显著降低风险投资基金和初创企业投资者的风险。此外,这些模型还为投资者提供了量身定制风险状况的独特能力,使预测符合他们的风险偏好。然而,成本敏感型机器学习在降低风险的同时,也可能因预测到的成功初创企业较少而限制了潜在收益。为了解决这个问题,我们提出了加强成功初创企业识别的方法,包括汇总多个 MetaCost 模型的结果,这对较小的交易流尤其有利。我们的研究推动了人工智能在初创企业投资中的作用,为投资者在这一领域的导航提供了关键工具。
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引用次数: 0
Using large language models to write theses and dissertations 使用大型语言模型撰写论文和学位论文
Q1 Economics, Econometrics and Finance Pub Date : 2023-12-20 DOI: 10.1002/isaf.1547
Daniel E. O'Leary

There has been substantial discussion aimed at investigating the extent to which academic researchers can or should “use” large language models, such as ChatGPT and Bard, in their research papers. However, there seems to have been limited attention given to the extent to which students can use these tools for the development of theses, proposals and dissertations. This paper pushes the arguments from focusing on academic researchers, journal papers, and technical meetings to considering those theses and dissertations, raising several questions and concerns. Ultimately, university policies need to address these issues, but if publisher and editor responses and alternative business uses are a signal of that direction, consensus may be difficult to achieve.

学术研究人员可以或应该在多大程度上在其研究论文中 "使用 "大型语言模型(如 ChatGPT 和 Bard),对此已经进行了大量讨论。然而,对于学生可以在多大程度上利用这些工具来撰写论文、建议书和毕业论文,人们的关注似乎还很有限。本文将论点从关注学术研究人员、期刊论文和技术会议推进到考虑这些论文和学位论文,并提出了几个问题和关注点。归根结底,大学政策需要解决这些问题,但如果出版商和编辑的回应以及替代性商业用途是这一方向的信号,则可能难以达成共识。
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引用次数: 0
Costs associated with exit or disposal activities: A topic modeling investigation of disclosure and market reaction 与退出或处置活动相关的成本:对信息披露和市场反应的专题建模调查
Q1 Economics, Econometrics and Finance Pub Date : 2023-12-06 DOI: 10.1002/isaf.1545
Charles P. Cullinan, Richard Holowczak, David Louton, Hakan Saraoglu

The Securities and Exchange Commission (SEC) mandates disclosure of exit or disposal activity events in 8-K filings. We use Latent Dirichlet Allocation (LDA), a topic modeling method from computational linguistics, to investigate the possibility that substantively different event types may be subsumed under Item 2.05, the SEC category for costs associated with exit or disposal activities. Our analysis reveals that four distinct topics are reported under the Item 2.05 umbrella category: (1) restructuring, (2) disposal of a line of business, (3) plant closings, and (4) layoffs/workforce reductions. We then investigate various aspects of these 8-K filings. We find that the market reacts most negatively to workforce reductions that are reported in the absence of a broader strategic initiative. Subsequent amendments to the Item 2.05 8-K filings are significantly more likely for restructuring initiatives, and significantly less likely for layoffs. Asset impairment charges most frequently accompany line-of-business disposals and plant closings. Our results demonstrate that there are meaningful differences between the event types reported within Item 2.05 filings and that LDA provides a useful means of differentiating among these event types.

美国证券交易委员会(SEC)要求在8‐K文件中披露退出或处置活动事件。我们使用潜在狄利克雷分配(Latent Dirichlet Allocation, LDA),一种来自计算语言学的主题建模方法,来调查与退出或处置活动相关的成本在美国证券交易委员会(SEC)类别第2.05项下包含实质性不同事件类型的可能性。我们的分析显示,在项目2.05总括类别下报告了四个不同的主题:(1)重组,(2)处置业务线,(3)关闭工厂,以及(4)裁员/裁员。然后,我们调查这些8‐K文件的各个方面。我们发现,在缺乏更广泛的战略举措的情况下,市场对裁员的反应最为负面。对第2.05项8‐K文件的后续修订更有可能涉及重组计划,而裁员的可能性要小得多。资产减值费用通常伴随着业务线处置和工厂关闭。我们的结果表明,在item2.05文件中报告的事件类型之间存在有意义的差异,并且LDA提供了区分这些事件类型的有用方法。
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引用次数: 0
Cryptoassets: Definitions and accounting treatment under the current International Financial Reporting Standards framework 加密资产:现行《国际财务报告准则》框架下的定义和会计处理方法
Q1 Economics, Econometrics and Finance Pub Date : 2023-12-06 DOI: 10.1002/isaf.1543
Luz Parrondo

This paper provides a first comprehensive definition of cryptoassets for accounting purposes in the types of payment tokens, electronic money (e-money) tokens, utility tokens and security tokens. The delivery of definitions for accounting purposes addresses some of the concerns raised by the European Financial Reporting Advisory Group (EFRAG) discussion paper and helps accounting regulators adapt current International Financial Reporting Standards (IFRS) standards to blockchain-based tokens' taxonomy and nature. The paper helps policymakers reconcile Markets in Cryptoassets Regulation Proposal's (MiCA) definitions and classification of cryptoassets with the EFRAG's specific needs for clarification and/or amendment in the IFRS standards and contributes to providing an accounting guide for practitioners in their financial disclosure.

本文首次全面定义了用于会计目的的加密资产,包括支付代币、电子货币(e - money)代币、实用型代币和证券型代币。为会计目的提供的定义解决了欧洲财务报告咨询小组(EFRAG)讨论文件提出的一些问题,并帮助会计监管机构使现行的国际财务报告准则(IFRS)标准适应基于区块链的代币的分类和性质。该文件有助于政策制定者将加密资产市场监管提案(MiCA)的定义和加密资产分类与EFRAG对国际财务报告准则中澄清和/或修订的具体需求相协调,并有助于为从业者提供财务披露的会计指南。
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引用次数: 0
Exploring the time-frequency connectedness among non-fungible tokens and developed stock markets 探索不可流通代币与发达股票市场之间的时间频率关联性
Q1 Economics, Econometrics and Finance Pub Date : 2023-11-23 DOI: 10.1002/isaf.1544
Wael Hemrit, Noureddine Benlagha, Racha Ben Arous, Mounira Ben Arab

In this paper, we examine the connectedness between volatilities for various non-fungible tokens (NFTs) and developed stock markets during the period from July 1, 2018, to June 15, 2022. With the use of the time-varying connectedness methods to explore the volatility interdependences among these assets, we find that there is a significant volatility connectedness during Russia's invasion of Ukraine and COVID-19 periods. Evidence emerging from this study advocates the inclusion of NFTs in developed stock markets for medium and long time periods only. The results also suggest that UK and Germany stock markets are the predominant market of spillover transmission, whereas the XTZ is the top net recipient/transmitter of volatility connectedness shocks. Moreover, Chinese stock market and ENJ offer more diversification gains than others, and the volatility connectedness from US stock market to NFTs is more pronounced in the long-term than the short-term. Our research provides some urgent and prominent insights to help investors and policymakers to be aware that NFTs are important hedge assets that should be added to stock portfolios during periods of geopolitical stability and in the post-pandemic times.

本文研究了 2018 年 7 月 1 日至 2022 年 6 月 15 日期间各种不可兑换代币(NFT)与发达股票市场波动率之间的关联性。通过使用时变关联度方法探讨这些资产之间的波动性相互依存关系,我们发现在俄罗斯入侵乌克兰和 COVID-19 期间存在显著的波动性关联。本研究得出的证据表明,发达国家的股票市场只应在中长期内纳入 NFT。研究结果还表明,英国和德国股市是溢出传播的主要市场,而 XTZ 则是波动关联性冲击的最大净接受者/传播者。此外,与其他市场相比,中国股市和 ENJ 提供了更多的多样化收益,而从美国股市到 NFTs 的波动关联在长期比短期更为明显。我们的研究提供了一些紧迫而突出的见解,帮助投资者和政策制定者认识到,在地缘政治稳定时期和后疫情时期,NFTs 是重要的避险资产,应将其加入股票投资组合中。
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引用次数: 0
An application of artificial neural networks in corporate social responsibility decision making 人工神经网络在企业社会责任决策中的应用
Q1 Economics, Econometrics and Finance Pub Date : 2023-10-03 DOI: 10.1002/isaf.1542
Nguyen Thi Thanh Binh

Neural networks in deep learning are changing the way we interact with the world. This paper focuses on building a logit artificial neural network (ANN) and through it finds out the factors affecting the decision to join corporate social responsibility (CSR) of firms. This study contributes to suggesting new directions for research in the artificial intelligence (AI) era on the relationship between corporate governance and CSR. The dataset of 817 Taiwanese electronic firms is analyzed for the period 2014–2020. The empirical results show that when the power of the board of directors, supervisors, and CEOs are higher, firms do not choose to participate in CSR. The independent board has not yet promoted its corporate oversight of CSR participation. The decision not to participate in CSR of the firms is made when they are more equipped with the background of accounting, finance, and law. Only firms with higher debt, asset value, and profitability are willing to join CSR. These research results suggest some important points for future policy reforms towards sustainability.

深度学习中的神经网络正在改变我们与世界互动的方式。本文的重点是构建一个对数人工神经网络(ANN),并通过该网络找出影响企业加入企业社会责任(CSR)决策的因素。本研究有助于为人工智能(AI)时代公司治理与企业社会责任之间关系的研究提出新的方向。本研究分析了 2014-2020 年间 817 家台湾电子企业的数据集。实证结果表明,当董事会、监事和首席执行官的权力较高时,企业不会选择参与企业社会责任。独立董事会尚未促进其对企业社会责任参与的企业监督。当企业更具备会计、金融和法律背景时,它们会做出不参与企业社会责任的决定。只有负债、资产价值和盈利能力较高的企业才愿意参与企业社会责任。这些研究结果为未来的可持续发展政策改革提出了一些重要观点。
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引用次数: 0
Enterprise large language models: Knowledge characteristics, risks, and organizational activities 企业大型语言模型:知识特征、风险和组织活动
Q1 Economics, Econometrics and Finance Pub Date : 2023-09-25 DOI: 10.1002/isaf.1541
Daniel E. O'Leary

Since the release of OpenAI's ChatGPT, there has been substantial interest in and concern about generative AI systems. This paper investigates some of the characteristics, risks, and limitations with the enterprise use of enterprise large language models. In so doing, we study the organizational impact, continuing a long line of research on that topic. This paper examines the impact on expertise, the organizational implications of multiple correlated but different responses to the same query, the potential concerns associated with sensitive information and intellectual property, and some applications that likely would not be appropriate for large language models. We also investigate the possibility of agents potentially manipulating the content in these large language models for their own benefit. Finally, we investigate the emerging phenomenon of “ChatBot Enterprise” versions, including some of the implications and concerns of such enterprise large language models.

自从OpenAI的ChatGPT发布以来,人们对生成型人工智能系统产生了极大的兴趣和担忧。本文研究了企业使用大型语言模型的一些特点、风险和局限性。在这样做的过程中,我们研究了组织的影响,继续了对该主题的长期研究。本文研究了对专业知识的影响,对同一查询的多个相关但不同的响应的组织含义,与敏感信息和知识产权相关的潜在问题,以及一些可能不适合大型语言模型的应用。我们还调查了代理为了自身利益而操纵这些大型语言模型中内容的可能性。最后,我们研究了“ChatBot Enterprise”版本的新兴现象,包括此类企业大型语言模型的一些含义和关注点。
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引用次数: 0
Remarks on a copula-based conditional value at risk for the portfolio problem 关于投资组合问题的一个基于copula的条件风险值的注记
Q1 Economics, Econometrics and Finance Pub Date : 2023-08-07 DOI: 10.1002/isaf.1540
Andres Mauricio Molina Barreto, Naoyuki Ishimura

We deal with a multivariate conditional value at risk. Compared with the usual notion for the single random variable, a multivariate value at risk is concerned with several variables, and thus, the relation between each risk factor should be considered. We here introduce a new definition of copula-based conditional value at risk, which is real valued and ready to be computed. Copulas are known to provide a flexible method for handling a possible nonlinear structure; therefore, copulas may be naturally involved in the theory of value at risk. We derive a formula of our copula-based conditional value at risk in the case of Archimedean copulas, whose effectiveness is shown by examples. Numerical studies are also carried out with real data, which can be verified with analytical results.

我们处理一个有风险的多元条件值。与单个随机变量的通常概念相比,多变量风险值与多个变量有关,因此,应考虑每个风险因素之间的关系。我们在这里介绍了一个基于copula的条件风险值的新定义,它是实值的,可以计算。已知Copula提供了一种灵活的方法来处理可能的非线性结构;因此,copula可能自然地涉及风险价值理论。在阿基米德copula的情况下,我们推导了一个基于copula的风险条件值的公式,其有效性通过例子得到了证明。数值研究也用实际数据进行,这些数据可以用分析结果进行验证。
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引用次数: 0
An efficient graph-based peer selection method for financial statements 一种高效的基于图的财务报表对等选择方法
Q1 Economics, Econometrics and Finance Pub Date : 2023-07-05 DOI: 10.1002/isaf.1539
Sander Noels, Simon De Ridder, Sébastien Viaene, Tijl De Bie

Comparing companies can be useful for various purposes. Despite the widespread use of industry classification systems as a peer selection standard, these have been criticized for various reasons. Financial statements, however, offer a promising alternative to such classification systems. They are standardized, widely available, and offer deep insights into the nature of the company. In this paper, we present a graph distance metric for financial statements using the earth mover's distance. When using the distance metric on real-world tasks such as peer identification and industry classification, it shows promising results in terms of accuracy and computational efficiency.

比较公司可以用于各种目的。尽管行业分类系统作为同行选择标准被广泛使用,但由于各种原因,这些系统受到了批评。然而,财务报表为这种分类系统提供了一个很有前途的替代方案。它们是标准化的,广泛可用,并提供对公司性质的深刻见解。在本文中,我们提出了一个使用地球移动者距离的财务报表图距离度量。当在同行识别和行业分类等现实世界任务中使用距离度量时,它在准确性和计算效率方面显示出了有希望的结果。
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引用次数: 0
Evaluating interpretable machine learning predictions for cryptocurrencies 评估加密货币的可解释机器学习预测
Q1 Economics, Econometrics and Finance Pub Date : 2023-06-21 DOI: 10.1002/isaf.1538
Ahmad El Majzoub, Fethi A. Rabhi, Walayat Hussain

This study explores various machine learning and deep learning applications on financial data modelling, analysis and prediction processes. The main focus is to test the prediction accuracy of cryptocurrency hourly returns and to explore, analyse and showcase the various interpretability features of the ML models. The study considers the six most dominant cryptocurrencies in the market: Bitcoin, Ethereum, Binance Coin, Cardano, Ripple and Litecoin. The experimental settings explore the formation of the corresponding datasets from technical, fundamental and statistical analysis. The paper compares various existing and enhanced algorithms and explains their results, features and limitations. The algorithms include decision trees, random forests and ensemble methods, SVM, neural networks, single and multiple features N-BEATS, ARIMA and Google AutoML. From experimental results, we see that predicting cryptocurrency returns is possible. However, prediction algorithms may not generalise for different assets and markets over long periods. There is no clear winner that satisfies all requirements, and the main choice of algorithm will be tied to the user needs and provided resources.

本研究探讨了机器学习和深度学习在金融数据建模、分析和预测过程中的各种应用。主要重点是测试加密货币小时回报的预测准确性,并探索、分析和展示ML模型的各种可解释性特征。该研究考虑了市场上最占主导地位的六种加密货币:比特币、以太坊、币安币、Cardano、Ripple和莱特币。实验环境从技术、基础和统计分析中探索相应数据集的形成。本文比较了各种现有的和增强的算法,并解释了它们的结果、特点和局限性。算法包括决策树、随机森林和集成方法、SVM、神经网络、单特征和多特征N-BEATS、ARIMA和Google AutoML。从实验结果中,我们看到预测加密货币回报是可能的。然而,预测算法可能无法长期适用于不同的资产和市场。没有一个明确的赢家能满足所有要求,算法的主要选择将取决于用户的需求和提供的资源。
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引用次数: 0
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Intelligent Systems in Accounting, Finance and Management
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