no code implementations • 31 Jul 2022 • Debanjan Datta, Sathappan Muthiah, John Simeone, Amelia Meadows, Naren Ramakrishnan
The task of finding such fraudulent activities using trade data, in the absence of ground truth, can be modelled as an unsupervised anomaly detection problem.
1 code implementation • 8 Jul 2022 • Raquib Bin Yousuf, Subhodip Biswas, Kulendra Kumar Kaushal, James Dunham, Rebecca Gelles, Sathappan Muthiah, Nathan Self, Patrick Butler, Naren Ramakrishnan
We demonstrate how EneRex is able to extract key insights and trends from a large-scale dataset in the domain of computer science.
no code implementations • 2 Apr 2021 • Debanjan Datta, Sathappan Muthiah, Naren Ramakrishnan
Among other challenges annotations are unavailable for our large-scale trade data with heterogeneous features (categorical and continuous), that can assist in building automated systems to detect fraudulent transactions.
no code implementations • 31 Mar 2016 • Prithwish Chakraborty, Sathappan Muthiah, Ravi Tandon, Naren Ramakrishnan
We propose hierarchical quickest change detection (HQCD), a framework that formalizes the process of incorporating additional correlated sources for early changepoint detection.