Annals of Applied Statistics
- Ann. Appl. Stat.
- Volume 8, Number 4 (2014), 2027-2067.
A multiple filter test for the detection of rate changes in renewal processes with varying variance
Michael Messer, Marietta Kirchner, Julia Schiemann, Jochen Roeper, Ralph Neininger, and Gaby Schneider
Abstract
Nonstationarity of the event rate is a persistent problem in modeling time series of events, such as neuronal spike trains. Motivated by a variety of patterns in neurophysiological spike train recordings, we define a general class of renewal processes. This class is used to test the null hypothesis of stationary rate versus a wide alternative of renewal processes with finitely many rate changes (change points). Our test extends ideas from the filtered derivative approach by using multiple moving windows simultaneously. To adjust the rejection threshold of the test, we use a Gaussian process, which emerges as the limit of the filtered derivative process. We also develop a multiple filter algorithm, which can be used when the null hypothesis is rejected in order to estimate the number and location of change points. We analyze the benefits of multiple filtering and its increased detection probability as compared to a single window approach. Application to spike trains recorded from dopamine midbrain neurons in anesthetized mice illustrates the relevance of the proposed techniques as preprocessing steps for methods that assume rate stationarity. In over 70% of all analyzed spike trains classified as rate nonstationary, different change points were detected by different window sizes.
Article information
Source
Ann. Appl. Stat., Volume 8, Number 4 (2014), 2027-2067.
Dates
First available in Project Euclid: 19 December 2014
Permanent link to this document
https://projecteuclid.org/euclid.aoas/1419001734
Digital Object Identifier
doi:10.1214/14-AOAS782
Mathematical Reviews number (MathSciNet)
MR3292488
Zentralblatt MATH identifier
06408769
Keywords
Stochastic processes renewal processes change point detection nonstationary rate multiple filters multiple time scales
Citation
Messer, Michael; Kirchner, Marietta; Schiemann, Julia; Roeper, Jochen; Neininger, Ralph; Schneider, Gaby. A multiple filter test for the detection of rate changes in renewal processes with varying variance. Ann. Appl. Stat. 8 (2014), no. 4, 2027--2067. doi:10.1214/14-AOAS782. https://projecteuclid.org/euclid.aoas/1419001734
Supplemental materials
- Supplementary material: Supplement to “A multiple filter test for the detection of rate changes in renewal processes with varying variance”. We provide the R-Code for the multiple filter algorithm.Digital Object Identifier: doi:10.1214/14-AOAS782SUPP

