no code implementations • 29 Sep 2019 • Emille E. O. Ishida, Matwey V. Kornilov, Konstantin L. Malanchev, Maria V. Pruzhinskaya, Alina A. Volnova, Vladimir S. Korolev, Florian Mondon, Sreevarsha Sreejith, Anastasia Malancheva, Shubhomoy Das
We present the first evidence that adaptive learning techniques can boost the discovery of unusual objects within astronomical light curve data sets.
2 code implementations • 23 Jan 2019 • Shubhomoy Das, Md. Rakibul Islam, Nitthilan Kannappan Jayakodi, Janardhan Rao Doppa
Our results show that active learning allows us to discover significantly more anomalies than state-of-the-art unsupervised baselines, our batch active learning algorithm discovers diverse anomalies, and our algorithms under the streaming-data setup are competitive with the batch setup.
2 code implementations • 2 Oct 2018 • Md. Rakibul Islam, Shubhomoy Das, Janardhan Rao Doppa, Sriraam Natarajan
Human analysts that use anomaly detection systems in practice want to retain the use of simple and explainable global anomaly detectors.
2 code implementations • 17 Sep 2018 • Shubhomoy Das, Md. Rakibul Islam, Nitthilan Kannappan Jayakodi, Janardhan Rao Doppa
First, we present an important insight into how anomaly detector ensembles are naturally suited for active learning.
2 code implementations • 30 Aug 2017 • Shubhomoy Das, Weng-Keen Wong, Alan Fern, Thomas G. Dietterich, Md Amran Siddiqui
Unfortunately, in realworld applications, this process can be exceedingly difficult for the analyst since a large fraction of high-ranking anomalies are false positives and not interesting from the application perspective.
1 code implementation • 3 Mar 2015 • Andrew Emmott, Shubhomoy Das, Thomas Dietterich, Alan Fern, Weng-Keen Wong
The intended contributions of this article are many; in addition to providing a large publicly-available corpus of anomaly detection benchmarks, we provide an ontology for describing anomaly detection contexts, a methodology for controlling various aspects of benchmark creation, guidelines for future experimental design and a discussion of the many potential pitfalls of trying to measure success in this field.