# Model a sequence

Model / sequence

hidden Markov and other sequence models, reinforcement learning

Page: <https://meridian.online/operations/model-a-sequence>

## Status

Not built yet.

arcform does not do this yet. [Its place on the roadmap](https://meridian.online/roadmap#model-a-sequence)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 86.2% of 312 rows (exact class, version 2).

- mlpack: [`mlpack_hmm_train`](https://www.mlpack.org/doc/user/bindings/cli.html) (read 2026-09-27)
- mlpack: [`reinforcement_learning`](https://github.com/mlpack/mlpack/tree/master/src/mlpack/methods) (read 2026-09-27)