markovchain | Easy Handling Discrete Time Markov Chains | Development Tools library

by spedygiorgio R Version: Current License: No License

X-Ray Key Features Code Snippets(1)Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | markovchain Summary

markovchain is a R library typically used in Utilities, Development Tools applications. markovchain has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

R package providing classes, methods and function for easily handling Discrete Time Markov Chains (DTMC), performing probabilistic analysis and fitting.

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Support

markovchain has a low active ecosystem.

It has 96 star(s) with 37 fork(s). There are 12 watchers for this library.

It had no major release in the last 6 months.

There are 20 open issues and 143 have been closed. On average issues are closed in 105 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of markovchain is current.

Quality

markovchain has 0 bugs and 0 code smells.

Security

markovchain has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

markovchain code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

markovchain does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

markovchain releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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markovchain Key Features

No Key Features are available at this moment for markovchain.

markovchain Examples and Code Snippets

Add Flask

Python

Lines of Code : 129

License : No License

Copy

$ mkdir lyricize
$ cd lyricize
$ virtualenv --no-site-packages venv
$ source venv/bin/activate


$ pip install PyMarkovChain flask requests
$ pip freeze > requirements.txt


from flask import Flask, render_template

app = Flask(__name__)
app.debug

Community Discussions

Trending Discussions on markovchain

generating a Markov chain simulation using a transition matrix of specific size and with a given seed, using the mchmm library

Can't install any R package with jupyter notebook

Reconstructing Markov chain from figure in R

Is there an R package to calculate 1st order transition matrix from a frequency table?

Fixing R and shiny package together

Simulation takes very long, how could performance be improved?

QUESTION

generating a Markov chain simulation using a transition matrix of specific size and with a given seed, using the mchmm library

Asked 2022-Feb-23 at 20:48

I am trying to generate a Markov simulation using a specific sequence as start, using the mchmm library coded with scipy and numpy. I am not sure if I am using it correctly, since the library also has Viterbi and Baum-Welch algorithms in the context of Markov, which I am not familiar with.

To illustrate, I will continue with an example.

...

ANSWER

Answered 2022-Feb-23 at 20:48

The states in the MarkovChain instance a are 'A', 'B' and 'C'. When the simulate method is given a string for state, it expects it to be the name of one of the states, i.e. either 'A', 'B' or 'C'. You get that error because data[-3:] is not one of the states.

For example, in the following I use start='A' in the call of simulate(), and it generates a sequence of 10 states, starting at 'A':

Source https://stackoverflow.com/questions/71239580

QUESTION

Can't install any R package with jupyter notebook

Asked 2022-Feb-22 at 17:32

I get this error whenever I try to install any package with jupyter notebook

...

ANSWER

Answered 2022-Feb-22 at 17:32

The CRAN package lifedependencies is now available through Conda Forge.¹ I generally recommend that all Conda R environments should source packages from Conda, otherwise one is likely to encounter compilation (really, library linking) issues.

Source https://stackoverflow.com/questions/71196368

QUESTION

Reconstructing Markov chain from figure in R

Asked 2022-Feb-14 at 20:28

I am trying to reconstruct a Markov process from Shannons paper "A mathematical theory of communication". My question concerns figure 3 on page 8 and a corresponding sequence (message) from that Markov chain from page 5 section (B). I just wanted to check if I coded the right Markov chain to this figure from Shannons paper:

Here is my attempt:

...

ANSWER

Answered 2022-Feb-14 at 20:28

Looks fine. It's maybe odd because with fully independent states like this there isn't any need for a Markov chain. One could equally well use

Source https://stackoverflow.com/questions/71116826

QUESTION

Is there an R package to calculate 1st order transition matrix from a frequency table?

Asked 2021-Aug-01 at 01:37

I have a frequency table aggregated from 800 millions of records and am wondering if I can use a package to calculate 1st order transition matrix from the frequency table, which is not symmetric because some state just never happened again. A sample of the frequency table is:

...

ANSWER

Answered 2021-Aug-01 at 01:37

It appeared you might have known about the stats::xtabs function since, since the result you are asking us to work with appears to be the result of the base::as.data.frame.table function which converts the "wide" result from a table call into a "long" data.frame representation of the same data. (But maybe not since you posted the pollster code that adds an additional confusing column.) Here we will be reversing that procedure so we can recover a matrix (which R table objects inherit from).

Do notice that I'm using your data object, but not using pkg:pollster code, since your tables didn't appear to be based on that data.table object.

How to get the zero column, ... just put in a single zero data element in the state2=3 "column" position. You only need to add one data point in state2 for the entire column, but it obviously needs to be from some state1 value. It can be from any of the state 1 values:

Source https://stackoverflow.com/questions/68603750

QUESTION

Fixing R and shiny package together

Asked 2020-Jun-29 at 22:42

I created this simple text prediction model . How do I integrate my main code with Shiny app I created ? How to create an output based from R code I created with shiny app

...

ANSWER

Answered 2020-Jun-29 at 22:42

This answer will be incomplete, for two reasons: (1) I don't have those packages, so I'll focus on functionization of your process and one shiny server component that will use that, and (2) I don't know what other functionality you have in your shiny, so I don't know how best to incorporate it into that structure.

Source https://stackoverflow.com/questions/62647333

QUESTION

Simulation takes very long, how could performance be improved?

Asked 2020-Jun-11 at 09:22

I am currently doing a markov chain simulation with the markovchain package, and an inner- and an outer-loop. In total 175,2 million values should be inserted into a dataframe, the reproducible example code is below. This has been running for 40+ hours now, and I was wondering how I could speed this up? And I am curious whether someone could give me an indication on how long it might take to finish the calculation.

I've already improved the code by using the profvis package.

...

ANSWER

Answered 2020-Jun-11 at 08:35

Your code seems not to run as expected, there are multiple variables incorrectly defined and two identical loops. But I will guess that the inner loop is written badly.

If you have some df with charges/discharges:

Source https://stackoverflow.com/questions/62318821

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install markovchain

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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