Bankruptcy Prediction through Artificial Intelligence

Bankruptcy Prediction through Artificial Intelligence

Y. Goletsis, C. Papaloukas, Th. Exarhos, C.D. Katsis
DOI: 10.4018/978-1-60566-026-4.ch053
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Bankruptcy prediction or corporate failure is considered a classic issue in both, academic and business communities. Bankruptcy risk is one of the most important factors (if not the most important one) to be considered when credit requests are screened or even existing debtors are evaluated. On the other hand, all potential stakeholders (shareholders, suppliers, customers, employees, creditors, auditors, etc.) have potential interest to identify if a company is on a trajectory that is tending towards failure. Commercial banks, public accounting firms and other institutional entities (e.g., bond rating agencies) appear to be the primary beneficiaries of accurate bankruptcy prediction, since they can use research results to minimize exposure to potential client failures. In addition to avoiding potentially troubled obligors, the research can also benefit in other ways. It can help in accurately assessing the credit risk of bank loan portfolios. Credit risk has been the subject of much research activity, since the regulators are acknowledging the need and are urging the banks to assess the credit risk in their portfolios. Measuring the credit risk accurately also allows banks to engineer future lending transactions, so as to achieve targeted return/risk characteristics. The other benefit of the prediction of bankruptcies is for accounting firms. If an accounting firm audits a potentially troubled firm, and misses giving a warning signal then it faces costly lawsuits (Atiya, 2001). A series of techniques have been applied in literature. Econometric / statistical methods have first appeared in literature: In late 1960’s (multiple) discriminant analysis (DA) was the dominant method; during the 1980’s logistic analysis. In the 1990’s artificial intelligence starts appearing in financial literature with neural networks (Odom & Sharda 1990) serving as an alternative to statistical methods demonstrating promising results. The goal of this chapter is therefore two-fold: First, it intends to give an overview of the artificial intelligence techniques successfully applied to the problem, ranging from the first neural network applications to recent applications of biologically inspired algorithms, such as genetic algorithms. Then, two kernel based methods, namely the Radial Basis Function Neural Networks and the Support Vector Machines are applied to the bankruptcy problem.
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Early statistical studies in bankruptcy prediction (e.g., Beaver, 1966 adopted a univariate methodology identifying the accounting ratios having the highest classification accuracy in separating failing and non-failing firms. Beaver investigated the predictability of 14 financial ratios. Altman (1968) examined simultaneously a series of financial ratios, enriching the single ratio approaches. A multiple discriminant function was calculated, the so-called Z-score composed of five financial ratios:Z = 1.2X1 + 1.4X2 + 3.3X3 + .6X4 + .999X5, (1) where

X1 = Working Capital / Total Assets. (Measures liquidity)

X2 = Retained Earnings / Total Assets. (Measures profitability)

X3 = Earnings Before Interest and Taxes / Total Assets. (Measures operating efficiency)

X4 = Market Value of Equity / Book Value of Total Liabilities. (Adds market dimension)

X5 = Sales/ Total Assets. (Standard measure for turnover)

Z-Score model was modified by Altman, Haldeman, and Narayanan (1977). Their ZETA model was composed from seven financial ratios. Since these early studies, a vast range of statistical methodologies have been applied for the purposes of corporate failure prediction including logistic regression (Martin, 1977), logit (Ohlson, 1980), Kolari, Glennon, Shin, and Caputo (2002), probit and maximum likehood models (Zmijewski, 1984).

Key Terms in this Chapter

Support Vector Machines (SVM): Support vector machines is a methodology used for classification and regression. SVMs select a small number of critical boundary instances called support vectors from each class and build a linear discriminant function that separates them as widely as possible.

Bankruptcy Prediction: The process based on financial data of a company to predict whether the company will become bankrupt.

Financial Ratios: Mathematical relationship between one financial quantity and another used to describe financial condition of a firm. There are many categories of ratios such as those that evaluate a business entity’s liquidity, solvency, return on investment, operating performance, asset utilization, and market measures.

Artificial Neural Networks (ANN): An artificial neural network is a massive parallel distributed processor made up of simple processing units. It has the ability to learn from experiential knowledge expressed through interunit connections strengths, and can make such knowledge available for use.

Genetic Algorithms (GA): Genetic algorithms are derivative free, stochastic optimization methods based on the concepts of natural selection and evolutionary processes.

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