no code implementations • 7 Jul 2020 • Alexander T. M. Fisch, Idris A. Eckley, P. Fearnhead
In this paper, we propose CE-BASS, a particle mixture Kalman filter which is robust to both innovative and additive outliers, and able to fully capture multi-modality in the distribution of the hidden state.
no code implementations • 4 Sep 2019 • Alexander T. M. Fisch, Idris A. Eckley, Paul Fearnhead
In recent years, there has been a growing interest in identifying anomalous structure within multivariate data streams.
1 code implementation • 5 Jun 2018 • Alexander T. M. Fisch, Idris A. Eckley, Paul Fearnhead
Theoretical results establish the consistency of CAPA at detecting collective anomalies and, as a by-product, the consistency of a popular penalised cost based change in mean and variance detection method.
1 code implementation • 4 Sep 2015 • David P. Hofmeyr, Nicos G. Pavlidis, Idris A. Eckley
We study the problem of determining the optimal low dimensional projection for maximising the separability of a binary partition of an unlabelled dataset, as measured by spectral graph theory.
1 code implementation • 11 Dec 2014 • Kaylea Haynes, Idris A. Eckley, Paul Fearnhead
The computational complexity of this approach can be linear in the number of data points and linear in the difference between the number of changepoints in the optimal segmentations for the smallest and largest penalty values.