# Hidden Markov Model on R Studio

Is there any detailed materials that can help explain how to set up HMM on R Studio?

• have you seen here? – Media Jan 21 '18 at 15:12

You can take a look at here. As you can read from there:

Now unpack it

shell$tar -xzvf hiddenDomains.VERSION.NUMBER.tar.gz  Where VERSION and NUMBER represent the release that you downloaded. 1. Install R and required R packages (if necessary) Download and install R if you don't already have it. If you don't already have them, you will need to install two hidden Markov model libraries: depmixS4 HiddenMarkov You can do this by starting R on the command line: shell$ R


Or, if you prefer RStudio, you can use that.

Regardless of how you started R, type the following commands to install the packages.

> install.packages("depmixS4")
> install.packages("HiddenMarkov")


Here and here may also be helpful for knowing how to use it.

There is a package called ‘HMM’ (not 'hmm'). You can find the documentation here. There are a lot of tutorials available.

Use depmixS4 package in R. This basic example would help-

https://machinelearningstories.blogspot.com/2017/02/hidden-markov-model-session-1.html

depmixs4 vignette is also present. u can get in package also.

A simple code sample would be-

R Code snippets-

## Required library

library(depmixS4)

physician_prescrition_data <-c(12,16,45,45,56,67,78,98,120,124,156)

## model execution-

HMM_model <- depmixS4::depmix(physician_prescrition_data~1, nstates = 2,ntimes=length(physician_prescrition_data))

## model fitting

HMM_fm <- fit(HMM_model)

## Transition probabilties-

HMM_fm@transition

## posterior states-

posterior(HMM_fm) plot(ts(posterior(HMM_fm)[,1]))

HMM_fm@response