{"id":65911,"date":"2020-11-11T11:26:23","date_gmt":"2020-11-11T16:26:23","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=65911"},"modified":"2022-11-21T09:46:36","modified_gmt":"2022-11-21T14:46:36","slug":"can-a-computer-read-employee-emails-and-detect-fraud","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/can-a-computer-read-employee-emails-and-detect-fraud\/","title":{"rendered":"Can A Computer Read Employee Emails and Detect Fraud?"},"content":{"rendered":"\n<p><em>The post &#8220;<a href=\"https:\/\/alphaarchitect.com\/2020\/10\/19\/can-a-computer-read-employee-emails-and-detect-fraud\/\">Can A Computer Read Employee Emails and Detect Fraud?<\/a>&#8221; first appeared on Alpha Architect Blog.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-zero-revelation-regtech-detecting-risk-through-linguistic-analysis-of-corporate-emails-and-news\">Zero-Revelation RegTech: Detecting Risk through Linguistic Analysis of Corporate Emails and News<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>S.R. Das, S. Kim, B. Kothari<\/li><li><em>Journal of Financial Data Science,&nbsp;<\/em>Spring 2019<\/li><li>A version of this paper can be found&nbsp;<a href=\"https:\/\/papers.ssrn.com\/sol3\/papers.cfm?abstract_id=2960350\">here<\/a><\/li><li>Want to read our summaries of academic finance papers? Check out our&nbsp;<a href=\"https:\/\/alphaarchitect.com\/category\/architect-academic-insights\/academic-research-insight\/\">Academic Research Insight<\/a>&nbsp;category<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-research-questions\">What are the Research Questions<\/h2>\n\n\n\n<p>Last week I took you on a tour of utilizing the data hidden in the&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/alphaarchitect.com\/2020\/10\/12\/news-and-its-impact-on-risk-and-returns-around-the-world\/\" target=\"_blank\">language of the news<\/a>. In this post, we\u2019re taking the analysis of language to corporate emails. Clearly, unlike the data in news, corporate emails are non-public information. Therefore the data is being utilized to develop regulatory technology (RegTech), not hunting for alpha generation. This paper applies natural language programming (NLP), a popular data science technique used in finance, to develop an early-warning system for detecting corporate fraud and\/or failure. Specifically, the authors attempt at answering the following research questions:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Does the sentiment conveyed by employee communications (i.e. emails) contain value-relevant information?<\/li><li>Is this information conveyed in a timely manner (i.e., does email sentiment lead subsequent stock returns)?<\/li><li>Do other structural characteristics of internal employee emails (e.g., email length, email volume, or email-network characteristics) also contain value-relevant information?<\/li><li>Which tends to contain more value-relevant information, the actual verbal content, or structural characteristics of employee emails?<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-academic-insights\">What are the Academic Insights?<\/h2>\n\n\n\n<p>By analyzing a unique dataset made up of 113,000 emails from 144 Enron employees and 1,300 that appeared on PR&nbsp;<em>Newswire&nbsp;<\/em>from January 2000 to December 2001, the authors find:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>YES, the authors observe trending patterns in the sentiment contained in emails. Specifically, they observe the positive sentiment from both emails and news articles decline into the year of 2001 as Enron problems started to manifest.<\/li><li>YES, the net sentiment of email content is a meaningful predictor of subsequent stock returns. Specifically, a one standard deviation decrease in the net sentiment gleaned from emails is associated with a 4.5% decline in stock returns (coefficient estimate = 2.347, t-statistic = 3.27).<\/li><li>YES, the authors find that when the length of emails is added as an independent variable to the regression, it takes over in explaining the relation with future stock returns. In fact, for every 20-character decline in email length, there is a 1.17% in future stock returns. Additionally, the authors find that structural characteristics such as the length of emails contain the most value-relevant information.<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-does-it-matter\">Why does it matter?<\/h2>\n\n\n\n<p>The importance of RegTech has grown rapidly since the financial crisis; more than $160 billion has been paid in fines by various financial institutions. Also, about 10%-15% of the staff in financial institutions is dedicated to compliance (&nbsp;<a href=\"https:\/\/www.ft.com\/content\/fd80ac50-7383-11e6-bf48-b372cdb1043a\">Arnold, 2016<\/a>) and a RegTech solution could create a reduction of costs. This paper develops a RegTech expert system solution to parse corporate email content to detect shifts in critical characteristics in a timely, efficient, and noninvasive manner. Clearly it\u2019s hard to make large sweeping conclusions from one data set on a company that the researchers knew had failed. That however shouldn\u2019t stop us from taking a deeper look into the utilization of textual RegTech analysis of corporate management emails as a means to detect risk in a timelier fashion. It may also be used by regulators in their audit process because they can requisition such analyses from firms without intrusively reading emails. In the words of the authors:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201c<em>Early detection and prevention is better than a cure\u201d<\/em><\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-most-important-chart-from-the-paper\">The Most Important Chart from the Paper:<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"748\" height=\"266\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/11\/alpha-architect-computer.png\" alt=\"\" class=\"wp-image-65915 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/11\/alpha-architect-computer.png 748w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/11\/alpha-architect-computer-700x249.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/11\/alpha-architect-computer-300x107.png 300w\" data-sizes=\"(max-width: 748px) 100vw, 748px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 748px; aspect-ratio: 748\/266;\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><em>In this paper, we demonstrate how an applied linguistics platform may be used to parse corporate email content and news to assess factors predicting escalating risk or the gradual shifting of other critical characteristics within the firm before they are eventually manifested in observable data and financial outcomes. We find that email content and news articles meaningfully predict increased risk and potential malaise. We also find that other structural characteristics, such as the average email length, are strong predictors of risk and subsequent performance. We present implementations of three spatial analyses of internal corporate communication, i.e., email networks, vocabulary trends, and topic analysis. Overall, we propose a RegTech solution by which to systematically and effectively detect escalating risk or potential malaise without the need to manually read individual employee emails.<\/em><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>This article will demonstrate how natural language programming (NLP) is applied in finance to discover corporate fraud and\/or failure. <\/p>\n","protected":false},"author":152,"featured_media":28966,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[339,338,341,352,344],"tags":[806,8698,852,2859],"contributors-categories":[13651],"class_list":{"0":"post-65911","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-data-science","8":"category-ibkr-quant-news","9":"category-quant-development","10":"category-quant-north-america","11":"category-quant-regions","12":"tag-data-science","13":"tag-finteck","14":"tag-machine-learning","15":"tag-natural-language-processing","16":"contributors-categories-alpha-architect"},"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.3) - 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