Helske S, Helske J (2019). “Mixture Hidden Markov Models for Sequence Data: The seqHMM Package in R.” Journal of Statistical Software, 88(3), 1–32. doi:10.18637/jss.v088.i03.

Helske J (2025). “Feedback-augmented Non-homogeneous Hidden Markov Models for Longitudinal Causal Inference.” arXiv preprint. doi:10.48550/arXiv.2503.16014.

Helske J, Helske S (2026). seqHMM: Mixture hidden Markov models for social sequence data and other multivariate, multichannel categorical time series. doi:10.32614/CRAN.package.seqHMM, R package version 2.2.0.

Corresponding BibTeX entries:

  @Article{,
    title = {Mixture Hidden {M}arkov Models for Sequence Data: The
      {seqHMM} Package in {R}},
    author = {Satu Helske and Jouni Helske},
    journal = {Journal of Statistical Software},
    year = {2019},
    volume = {88},
    number = {3},
    pages = {1--32},
    doi = {10.18637/jss.v088.i03},
  }

  @Article{,
    title = {Feedback-augmented Non-homogeneous Hidden {M}arkov Models
      for Longitudinal Causal Inference},
    author = {Jouni Helske},
    journal = {arXiv preprint},
    year = {2025},
    doi = {10.48550/arXiv.2503.16014},
  }

  @Manual{,
    title = {seqHMM: Mixture hidden {Markov} models for social sequence
      data and other multivariate, multichannel categorical time
      series},
    author = {Jouni Helske and Satu Helske},
    year = {2026},
    note = {R package version 2.2.0},
    doi = {10.32614/CRAN.package.seqHMM},
  }