Introduces the Payment Heterogeneity Index (PHI) as an unsupervised composite statistic integrating GMM parameters and non-parametric measures to characterize distinct payment regimes in procurement data.
2017 IEEE International Conference on Big Data (Big Data) , pages=
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The Payment Heterogeneity Index: An Integrated Unsupervised Framework for High-Volume Procurement Oversight and Decision Support
Introduces the Payment Heterogeneity Index (PHI) as an unsupervised composite statistic integrating GMM parameters and non-parametric measures to characterize distinct payment regimes in procurement data.