⛓ marc is a small, but flexible Markov chain generator

Last update: Oct 27, 2022

Overview

About

marc (markov chain) is a small, but flexible Markov chain generator.

Usage

marc is easy to use. To build a MarkovChain pass the object a sequence of items:

from marc import MarkovChain

sequence = [
    'Rock', 'Rock', 'Rock', 'Paper', 'Rock', 'Scissors',
    'Paper', 'Paper', 'Scissors', 'Rock', 'Scissors',
    'Scissors', 'Paper', 'Scissors', 'Rock', 'Rock', 'Rock',
    'Paper', 'Scissors', 'Scissors', 'Scissors', 'Rock'
]

chain = MarkovChain(sequence)

The learned transition matrix can be accessed through the matrix attribute:

print(chain.matrix)
# [[0.5, 0.25, 0.25], [0.2, 0.2, 0.6], [0.375, 0.25, 0.375]]

Though, the output is perhaps better viewed as a pandas DataFrame:

import pandas as pd

df = pd.DataFrame(
    chain.matrix,
    index=chain.encoder.index_,
    columns=chain.encoder.index_
)

print(df)
#            Rock  Paper  Scissors
# Rock      0.500   0.25     0.250
# Paper     0.200   0.20     0.600
# Scissors  0.375   0.25     0.375

Use the next method to generate the next state (seeded or unseeded):

chain.next('Rock')
# 'Rock'

chain.next()
# Paper

The next method can also generate multiple states with the n argument:

chain.next('Paper', n=5)
# ['Scissors', 'Paper', 'Rock', 'Paper', 'Scissors']

MarkovChain objects are iterable. This means that they can be passed directly to the next function:

next(chain)
# 'Scissors'

next(chain)
# Rock

Example

A fully worked example of marc in action (block text provided by quote):

import random
import re
from quote import quote
from marc import MarkovChain

quotes = quote('shakespeare', 250)
print(quotes[0])

# {'author': 'William Shakespeare',
#  'book': 'As You Like It',
#  'quote': 'The fool doth think he is wise, but the wise man knows himself to be a fool.'}

text = '\n'.join([q['quote'] for q in quotes])
text = text.lower()

tokens = re.findall(r"[\w']+|[.,!?;]", text)
tokens[:5]

# ['the', 'fool', 'doth', 'think', 'he']

chain = MarkovChain(tokens)

def generate_sentences(chain, n=2, length=(10, 20)):
    for _ in range(n):
        l = random.randint(length[0], length[1])
        nonsense = ' '.join(chain.next(n=l))
        print(nonsense)

generate_sentences(chain)

# and unless by some are fascinated by the hour upon the wind faithful
# those that hath had a very much as flaws go

Install

pip install -U marc

Releases(22.5.1)

22.5.1(May 28, 2022)
Tweak: changed Swift init to accept any sequence

Added: performance test for Swift store

Source code(tar.gz)
Source code(zip)
22.5.0(May 25, 2022)
Overhaul: breaking changes

Versioning: calver

Source code(tar.gz)
Source code(zip)
3.0rc1(May 24, 2022)
Preview: Python + Swift

Source code(tar.gz)
Source code(zip)
v2.0(Oct 9, 2019)
Simplified: API

Improved: examples

Source code(tar.gz)
Source code(zip)

pyhsmm - library for approximate unsupervised inference in Bayesian Hidden Markov Models (HMMs) and explicit-duration Hidden semi-Markov Models (HSMMs), focusing on the Bayesian Nonparametric extensions, the HDP-HMM and HDP-HSMM, mostly with weak-limit approximations.

Bayesian inference in HSMMs and HMMs This is a Python library for approximate unsupervised inference in Bayesian Hidden Markov Models (HMMs) and expli

527 Dec 4, 2022

Decipher using Markov Chain Monte Carlo

43 Dec 24, 2022

Python Markov Chain chatbot running on Telegram

Hanasubot Hanasubot (Japanese 話すボット, talking bot) is a Python chatbot running on Telegram. The bot is based on Markov Chains so it can learn your word

12 Dec 27, 2022

Block Chain for RiceSupply Chain and Agriculture Traceability

Block Chain for RiceSupply Chain and Agriculture Traceability Project Under Development Folder: Building a BlockChain Basic blockchain structure using

3 Jan 19, 2022

Markov Chain Composer

Markov Chain Composer Using Markov Chain to represent relationships between words in song lyrics and then generating new lyrics.. ahem interpretive po

85 Dec 9, 2022

Tools for working with MARC data in Catalogue Bridge.

catbridge_tools Tools for working with MARC data in Catalogue Bridge. Borrows heavily from PyMarc

1 Nov 11, 2021

Intruder detection systems are common place now, and readily available in industry, but how do they work? They must detect people and large animals, but not generate false alarms in the presence of small animals, changes in lighting, environmental motion such as trees, or melting snow. To work correctly, the system must learn the background, in order to differentiate foreground objects.

Intruder-Detection Intruder detection systems are common place now, and readily available in industry, but how do they work? They must detect people a

4 Jul 18, 2021

A simple but flexible plugin system for Python.

PluginBase PluginBase is a module for Python that enables the development of flexible plugin systems in Python. Step 1: from pluginbase import PluginB

1k Dec 16, 2022

935 Feb 20, 2021

Python Eacc is a minimalist but flexible Lexer/Parser tool in Python.

Python Eacc is a parsing tool it implements a flexible lexer and a straightforward approach to analyze documents.

60 Nov 16, 2022

A logical, reasonably standardized, but flexible project structure for doing and sharing data science work.

Cookiecutter Data Science A logical, reasonably standardized, but flexible project structure for doing and sharing data science work. Project homepage

0 Sep 5, 2021

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

Boltons boltons should be builtins. Boltons is a set of over 230 BSD-licensed, pure-Python utilities in the same spirit as — and yet conspicuously mis

6k Jan 6, 2023

5.4k Feb 20, 2021

6k Jan 4, 2023

Minimal But Practical Image Classifier Pipline Using Pytorch, Finetune on ResNet18, Got 99% Accuracy on Own Small Datasets.

PyTorch Image Classifier Updates As for many users request, I released a new version of standared pytorch immage classification example at here: http:

106 Nov 6, 2022

[CVPR 2021] 'Searching by Generating: Flexible and Efficient One-Shot NAS with Architecture Generator'

[CVPR2021] Searching by Generating: Flexible and Efficient One-Shot NAS with Architecture Generator Overview This is the entire codebase for the paper

35 Dec 1, 2022

barely is a lightweight, but highly extensible static site generator written in pure python.

barely is a lightweight, but highly extensible static site generator. Explore the docs » Quickstart · See available Plugins · Report Bug · Request Fea

40 Dec 1, 2022

♻️ Password Generator (PSG) 📚 This plugin is made for more familiarity with Python, but can also be used to create passwords

About Tool This plugin is made for more familiarity with Python, but can also be used to create passwords.

2 Jul 23, 2022

Small-File-Explorer - I coded a small file explorer with several options

Petit explorateur de fichier / Small file explorer Pour la première option (création de répertoire) / For the first option (creation of a directory) e

1 Jan 3, 2022

⛓ marc is a small, but flexible Markov chain generator

Related tags

Overview

About

Usage

Example

Install

You might also like...

pyhsmm - library for approximate unsupervised inference in Bayesian Hidden Markov Models (HMMs) and explicit-duration Hidden semi-Markov Models (HSMMs), focusing on the Bayesian Nonparametric extensions, the HDP-HMM and HDP-HSMM, mostly with weak-limit approximations.

Decipher using Markov Chain Monte Carlo

Python Markov Chain chatbot running on Telegram

Block Chain for RiceSupply Chain and Agriculture Traceability

Markov Chain Composer

Tools for working with MARC data in Catalogue Bridge.

A simple but flexible plugin system for Python.

A simple but flexible plugin system for Python.

Python Eacc is a minimalist but flexible Lexer/Parser tool in Python.

A logical, reasonably standardized, but flexible project structure for doing and sharing data science work.

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

Minimal But Practical Image Classifier Pipline Using Pytorch, Finetune on ResNet18, Got 99% Accuracy on Own Small Datasets.

[CVPR 2021] 'Searching by Generating: Flexible and Efficient One-Shot NAS with Architecture Generator'

barely is a lightweight, but highly extensible static site generator written in pure python.

♻️ Password Generator (PSG) 📚 This plugin is made for more familiarity with Python, but can also be used to create passwords

Small-File-Explorer - I coded a small file explorer with several options

Releases(22.5.1)

22.5.1(May 28, 2022)

22.5.0(May 25, 2022)

3.0rc1(May 24, 2022)

v2.0(Oct 9, 2019)

Owner

Max Humber

Rest API Written In Python To Classify NSFW Images.

Basic functions manipulating images using the OpenCV library

BD-ALL-DIGIT - This Is Bangladeshi All Sim Cloner Tools

This is the open source implementation of the ICLR2022 paper "StyleNeRF: A Style-based 3D-Aware Generator for High-resolution Image Synthesis"

Convert scans of handwritten notes to beautiful, compact PDFs

Code for CVPR 2022 paper "SoftGroup for Instance Segmentation on 3D Point Clouds"

Code for the paper "Controllable Video Captioning with an Exemplar Sentence"

Shape Detection - It's a shape detection project with OpenCV and Python.

Textboxes implementation with Tensorflow (python)

Detect and fix skew in images containing text

BNF Globalization Code (CVPR 2016)

This project proposes a camera vision based cursor control system, using hand moment captured from a webcam through a landmarks of hand by using Mideapipe module

OCR, Scene-Text-Understanding, Text Recognition

An application of high resolution GANs to dewarp images of perturbed documents

Machine Leaning applied to denoise images to improve OCR Accuracy

Handwritten Text Recognition (HTR) system implemented with TensorFlow.

OCR, Object Detection, Number Plate, Real Time

CellProfiler is a open-source application for biological image analysis

Distort a video using Seam Carving (video) and Vibrato effect (sound)

An interactive document scanner built in Python using OpenCV