fabisearch
0.0.4.5Change Point Detection in High-Dimensional Time Series Networks
Overview
Implementation of the Factorized Binary Search (FaBiSearch) methodology for the estimation of the number and the location of multiple change points in the network (or clustering) structure of multivariate high-dimensional time series. The method is motivated by the detection of change points in functional connectivity networks for functional magnetic resonance imaging (fMRI) data. FaBiSearch uses non-negative matrix factorization (NMF), an unsupervised dimension reduction technique, and a new binary search algorithm to identify multiple change points. It requires minimal assumptions. Lastly, we provide interactive, 3-dimensional, brain-specific network visualization capability in a flexible, stand-alone function. This function can be conveniently used with any node coordinate atlas, and nodes can be color coded according to community membership, if applicable. The output is an elegantly displayed network laid over a cortical surface, which can be rotated in the 3-dimensional space. The main routines of the package are detect.cps(), for multiple change point detection, est.net(), for estimating a network between stationary multivariate time series, net.3dplot(), for plotting the estimated functional connectivity networks, and opt.rank(), for finding the optimal rank in NMF for a given data set. The functions have been extensively tested on simulated multivariate high-dimensional time series data and fMRI data. For details on the FaBiSearch methodology, please see Ondrus et al. (2021) arXiv:2103.06347. For a more detailed explanation and applied examples of the fabisearch package, please see Ondrus and Cribben (2022), preprint.
Install
Health
- NOTE r-devel-linux-x86_64-debian-clang
- NOTE r-devel-linux-x86_64-debian-gcc
- NOTE2026-03-1012 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
Documentation
- Examples that run
- 25%
- Documented parameters
- 100%
- Return-value docs
- 100%
- References docs
- 42%
Downloads
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Checks run against github.com/mondrus96/fabisearch on 2026-08-16.
Dependencies
Nothing depends on this yet.
Code & Tests
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People & History
7 releases. Pick two to compare their code metrics. R releases are shown for context.
- RR 4.6.0 released · 2026-04-24
- RR 4.5.0 released · 2025-04-11
- RR 4.4.0 released · 2024-04-24
- RR 4.3.0 released · 2023-04-21
- 0.0.4.5Latest
- unarchivedReturned to CRAN2023-01-12
- archivedRemoved from CRAN2022-11-20requires archived package 'pkgmaker'
- RR 4.2.0 released · 2022-04-22
- 0.0.4.42022-03-15 · diff ↗
- 0.0.4.32022-03-03 · diff ↗
- 0.0.4.12022-02-08 · diff ↗
- 0.0.3.92021-11-23 · diff ↗
- unarchivedReturned to CRAN2021-11-23
- archivedRemoved from CRAN2021-10-26check problems were not corrected in time
- 0.0.3.62021-10-09 · diff ↗
- RR 4.1.0 released · 2021-05-18
Show 2 earlier events
- 0.0.2.42021-02-24
- RR 4.0.0 released · 2020-04-24
Package metadata
- First published
- 2021-02-24
- Total releases
- 7 / 5 yrs
- License
- MIT + file LICENSE OSI
- Minimum R
- ≥ 3.10
- Bundled data
- 3.4 MB / 7 files
- Download size
- 3.7 MB
- Installed size
- not tracked yet
- With dependencies
- not tracked yet
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