The paper compares the accuracy of quantile and conditional tail expectation (CTE) measurements using the “Peaks-Over-Threshold” tail estimator function for seven generalized Pareto distribution parameter estimation techniques. We use strictly consistent scoring functions that facilitate an...

The main objective of this research is to investigate the Predictability of Financial Statements Fraud-Risk Using Benford's Law on the Tehran Stock Exchange. Therefore, based on financial fraud detection criteria, a sample of 50 companies was extracted that 25 companies had fraud-risk in...

A large product assortment is typically characterized by many products that are rarely purchased: the long tail. Combined, these products make a sizable contribution to the total purchase volume. A retailer that better understands the purchase behavior in its long tail can increase the value of...

A chance-constrained binary program (CCBP) is a general optimization problem over binary decision variables restricted by a chance constraint, which ensures that a constraint with uncertain coefficients can be violated only up to a given probability threshold. Despite its wide applications, the...

Frauds in managing ERP system have been widely reported in Malaysia. The management should initiate a series of anti-fraud measures, as a leverage of cost control, while offsetting an existing resource. Fraud involves a significant financial risk that may threaten profit, as well as the image of...

The long tail hypothesis claims that increased Internet usage will enhance the purchase of obscure items so that, in aggregate, these obscure items will become an important, perhaps primary portion of the market. We test this hypothesis with two analyses. First, using unusually rich data on book...