no code implementations • 29 May 2023 • Alexandre Mösching, Housen Li, Axel Munk
Hidden Markov models (HMMs) are characterized by an unobservable (hidden) Markov chain and an observable process, which is a noisy version of the hidden chain.
1 code implementation • 10 Mar 2021 • Laura Jula Vanegas, Benjamin Eltzner, Daniel Rudolf, Miroslav Dura, Stephan E. Lehnart, Axel Munk
We propose and investigate a hidden Markov model (HMM) for the analysis of dependent, aggregated, superimposed two-state signal recordings.
Methodology
1 code implementation • 14 Jan 2021 • Facundo Mémoli, Axel Munk, Zhengchao Wan, Christoph Weitkamp
In this paper, we investigate compact ultrametric measure spaces which form a subset $\mathcal{U}^w$ of the collection of all metric measure spaces $\mathcal{M}^w$.
Metric Geometry Populations and Evolution
1 code implementation • 11 Dec 2020 • Florian Heinemann, Axel Munk, Yoav Zemel
We propose a hybrid resampling method to approximate finitely supported Wasserstein barycenters on large-scale datasets, which can be combined with any exact solver.
Computation Methodology 62G99, 65C60, 62P10, 90C08
2 code implementations • 20 Oct 2020 • Miguel del Alamo, Housen Li, Axel Munk, Frank Werner
Many modern statistically efficient methods come with tremendous computational challenges, often leading to large scale optimization problems.
Computation Optimization and Control 62G05, 68U10
no code implementations • 20 Oct 2020 • Solt Kovács, Housen Li, Lorenz Haubner, Axel Munk, Peter Bühlmann
Change point estimation is often formulated as a search for the maximum of a gain function describing improved fits when segmenting the data.
1 code implementation • 25 Feb 2019 • Laura Jula Vanegas, Merle Behr, Axel Munk
We introduce a new methodology for analyzing serial data by quantile regression assuming that the underlying quantile function consists of constant segments.
Methodology 62G08, 62G15, 62G30, 62G35, 90C39
2 code implementations • 5 Jul 2018 • Miguel del Álamo, Housen Li, Axel Munk
Despite the popularity and practical success of total variation (TV) regularization for function estimation, surprisingly little is known about its theoretical performance in a statistical setting.
Statistics Theory Statistics Theory 62G05, 62M40, 62G20
no code implementations • 11 Nov 2017 • Merle Behr, Axel Munk
To this end we quantify in the noiseless case, that is, Z = 0, the perturbation range of Y in order to obtain stable recovery of F and W. Based on this, we derive an iterative Lloyd's type estimation procedure that attains minimax estimation rates for W and F for Gaussian error matrix Z.
Statistics Theory Statistics Theory Primary 62F12, 62H30, Secondary 62F30, 62J05
no code implementations • 21 Dec 2016 • Housen Li, Axel Munk, Hannes Sieling, Guenther Walther
We define the essential histogram as the histogram in the confidence set with the fewest bins.
Statistics Theory Methodology Statistics Theory 62G10, 62H30
no code implementations • 18 Dec 2014 • Housen Li, Axel Munk, Hannes Sieling
In this paper, we propose a multiscale segmentation method, FDRSeg, which controls the false discovery rate (FDR) in the sense that the number of false jumps is bounded linearly by the number of true jumps.
Statistics Theory Statistics Theory