scholarly journals Evaluación de riesgos con Data Mining: el sistema financiero español

2019 ◽  
Vol 14 (3) ◽  
pp. 309-328
Author(s):  
José Alejandro Fernández Fernández ◽  
Virginia Bejarano Vázquez ◽  
Juan Antonio Vicente Virseda

El objetivo de este trabajo, basado en técnicas de Data Mining, es llegar a identificar el mejor método de predicción de riesgos para el sistema bancario español, teniendo en cuenta tanto sus características específicas, como la situación económica de España en el período objeto de estudio. Para ello, se definen, en primer lugar, catorce ratios que permiten identificar, en términos de riesgos, la situación de los bancos y cajas de ahorros españoles durante el período examinado. Mediante una técnica de reducción de dimensiones con la que se simplifica la interpretación de resultados, se obtienen cuatro factores latentes sobre los que se evalúa, junto con cuatro variables macroeconómicas adicionales,un conjunto de algoritmos de Data Mining, siendo seleccionado finalmente el arbol CHAID, a diferencia de trabajos previos, en los que nunca se había llegado a proponer la aplicación de técnicas de Data Mining y Machine Learning en la identificación de situaciones de riesgo en la industria bancaria española. Una limitación de este trabajo ha sido la imposibilidad de incorporar variables regulatorias, por tratarse de información reservada que, de haber estado disponible, nos habría permitido incorporar una nueva dimensión en la predicción de riesgos.

2020 ◽  
Author(s):  
Mohammed J. Zaki ◽  
Wagner Meira, Jr
Keyword(s):  

2019 ◽  
Vol 12 (3) ◽  
pp. 171-179 ◽  
Author(s):  
Sachin Gupta ◽  
Anurag Saxena

Background: The increased variability in production or procurement with respect to less increase of variability in demand or sales is considered as bullwhip effect. Bullwhip effect is considered as an encumbrance in optimization of supply chain as it causes inadequacy in the supply chain. Various operations and supply chain management consultants, managers and researchers are doing a rigorous study to find the causes behind the dynamic nature of the supply chain management and have listed shorter product life cycle, change in technology, change in consumer preference and era of globalization, to name a few. Most of the literature that explored bullwhip effect is found to be based on simulations and mathematical models. Exploring bullwhip effect using machine learning is the novel approach of the present study. Methods: Present study explores the operational and financial variables affecting the bullwhip effect on the basis of secondary data. Data mining and machine learning techniques are used to explore the variables affecting bullwhip effect in Indian sectors. Rapid Miner tool has been used for data mining and 10-fold cross validation has been performed. Weka Alternating Decision Tree (w-ADT) has been built for decision makers to mitigate bullwhip effect after the classification. Results: Out of the 19 selected variables affecting bullwhip effect 7 variables have been selected which have highest accuracy level with minimum deviation. Conclusion: Classification technique using machine learning provides an effective tool and techniques to explore bullwhip effect in supply chain management.


2021 ◽  
Vol 1088 (1) ◽  
pp. 012035
Author(s):  
Mulyawan ◽  
Agus Bahtiar ◽  
Githera Dwilestari ◽  
Fadhil Muhammad Basysyar ◽  
Nana Suarna

2021 ◽  
pp. 097215092098485
Author(s):  
Sonika Gupta ◽  
Sushil Kumar Mehta

Data mining techniques have proven quite effective not only in detecting financial statement frauds but also in discovering other financial crimes, such as credit card frauds, loan and security frauds, corporate frauds, bank and insurance frauds, etc. Classification of data mining techniques, in recent years, has been accepted as one of the most credible methodologies for the detection of symptoms of financial statement frauds through scanning the published financial statements of companies. The retrieved literature that has used data mining classification techniques can be broadly categorized on the basis of the type of technique applied, as statistical techniques and machine learning techniques. The biggest challenge in executing the classification process using data mining techniques lies in collecting the data sample of fraudulent companies and mapping the sample of fraudulent companies against non-fraudulent companies. In this article, a systematic literature review (SLR) of studies from the area of financial statement fraud detection has been conducted. The review has considered research articles published between 1995 and 2020. Further, a meta-analysis has been performed to establish the effect of data sample mapping of fraudulent companies against non-fraudulent companies on the classification methods through comparing the overall classification accuracy reported in the literature. The retrieved literature indicates that a fraudulent sample can either be equally paired with non-fraudulent sample (1:1 data mapping) or be unequally mapped using 1:many ratio to increase the sample size proportionally. Based on the meta-analysis of the research articles, it can be concluded that machine learning approaches, in comparison to statistical approaches, can achieve better classification accuracy, particularly when the availability of sample data is low. High classification accuracy can be obtained with even a 1:1 mapping data set using machine learning classification approaches.


Author(s):  
Gilda Taranto-Vera ◽  
Purificación Galindo-Villardón ◽  
Javier Merchán-Sánchez-Jara ◽  
Julio Salazar-Pozo ◽  
Alex Moreno-Salazar ◽  
...  

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