IEEE

An Adaptive Heterogeneous Credit Card Fraud Detection Model Based on Deep Reinforcement Training Subset Selection

Abstract: Heterogeneous fraud detection is an important means of credit card security assurance, which can utilize historical transaction records in a source and target domain to build an effective ...

Empirical Probability: What It Is and How It Works

Empirical probability uses the number of occurrences of an outcome within a sample set as a basis for determining the ...
IEEE

RIS Selection Scheme for UAV-Based Multi-RIS-Aided Multiuser Downlink Network With Imperfect and Outdated CSI

Abstract: In this paper, we explore the use of reconfigurable intelligent surface (RIS) in unmanned aerial vehicle (UAV) based multiuser downlink communications, where a flying UAV serves multiple ...
The Economist

How natural selection really shaped humanity

HUMANS HAVE never been immune from the pressures of natural selection. Throughout the history of the species circumstances have arisen to give individuals with certain beneficial mutations an ...
Harvard Medical School

Massive Ancient-DNA Study Reveals Natural Selection Has Accelerated in Recent Human Evolution

Applying new analytic methods to nearly 16,000 ancient genomes reveals natural selection has acted on hundreds, not dozens, of genes in West Eurasia over the last 10,000 years. More than half of the ...