hmmTensor

0.1.0

Hidden Markov Model by Matrix and Tensor Decomposition

0packages depend

567downloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Koki TsuyuzakiFirst published 2026-05-271 releasesCRAN page ↗

Solves Hidden Markov Models (HMMs) via matrix and tensor decomposition. Converts observation sequences to co-occurrence matrices/tensors and applies Symmetric Non-negative Matrix Factorization (symNMF), Singular Value Decomposition (SVD), CANDECOMP/PARAFAC (CP) decomposition, or Tensor-Train (TT) decomposition to recover HMM parameters. Also provides standard HMM algorithms (Forward, Backward, Viterbi, Baum-Welch) for comparison. The spectral learning approach for HMMs is based on Hsu, Kakade, and Zhang (2012) doi:10.1016/j.jcss.2011.12.025. The symNMF method is described in Kuang, Yun, and Park (2015) doi:10.1007/s10898-014-0247-2. The Tensor-Train decomposition is described in Oseledets (2011) doi:10.1137/090752286.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("hmmTensor", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-hmmtensor

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-hmmTensor

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-hmmTensor

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.0 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.16

not tracked

Coverage

100%

Documentation · exports

None

Vignettes

README

Dependencies · direct

Check history

OK2026-05-28
7 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

567

CRAN downloads in the past year

Rank #21,134 · ~2/day · ~47/mo

Releases R versions

Daily download trend is not available in this view yet.

37230 days

56790 days

5671 year

Compare downloads with other packages →

Also on1 r2u5 autocran

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (4)

rTensor symTensormethodsstats

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 759 (72%)Rd 301 (28%)

Code characteristics

Cyclomatic complexity: 2.0 median / 16 max
Test cases: 12 / 0.16 per code line
Documented parameters: 100%

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

11 7 exported

Complexity

4.6 avg / 16 max

Call network

11 nodes / 7 edges

Test coverage has not been measured for this package yet; nodes fall back to a neutral fill.

Call graph

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Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (1)

Maintainer (1)

Koki Tsuyuzaki

Author, Maintainer

Authors (1)

Koki Tsuyuzaki

Author, Maintainer

Release timeline

1 release. R releases are shown for context.

0.1.0Latest
2026-05-27 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-05-27
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet