markov-chain | An implementation of the Markov chain algorithm in PHP | Bot library
kandi X-RAY | markov-chain Summary
kandi X-RAY | markov-chain Summary
An implementation of the Markov chain algorithm in PHP.
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Top functions reviewed by kandi - BETA
- Read the input .
- Classify a subject .
- Tokenize string .
markov-chain Key Features
markov-chain Examples and Code Snippets
Lines of Code : 19License : Permissive (MIT)
Copyuse MarkovChain\MarkovChain;
use MarkovChain\Tokenizer\CharTokenizer;
$c = new MarkovChain(new CharTokenizer());
$c->learn([
'Lorem ipsum dolor sit amet, consetetur sadipscing elitr.',
'At vero eos et accusam et justo duo dolores et ea use MarkovChain\MarkovChain;
use MarkovChain\Tokenizer\WordTokenizer;
$c = new MarkovChain(new WordTokenizer());
$c->learn([
'Lorem ipsum dolor sit amet, consetetur sadipscing elitr.',
'At vero eos et accusam et justo duo dolores et ea $ composer require patrickschur/markov-chain
Community Discussions
Trending Discussions on markov-chain
QUESTION
I am working on a research project and a while back I asked this question on Mathematics Stack Exchange, where I was looking for a way to calculate the variance of the period-to-period change in income given a transition matrix, where each state corresponds to a log level of income in a vector, which is given. I want to calculate what the variance of an individual's change in income is over some n number of periods given that they began in each state. My state space consists of 11 states, so I hope to end up with a vector consisting of 11 different variances. When I asked the question, I received a satisfactory answer, but I am running into some issues when trying to code it in R I was hoping to receive help with.
I have created this piece of code to calculate the variances:
...ANSWER
Answered 2022-Mar-21 at 23:30Your variance function is returning the difference, and if you want the absolute value (variance) just wrap it inside abs() like this:
QUESTION
I have a matrix m that represents the probabilities transitioning from states to states.
E.g. for the sample below I will always get stuck in states 1,3,4, and state 2 I will randomly transition to one of the 4 states.
...ANSWER
Answered 2021-Feb-07 at 22:13My friend pointed out the following trick.
Eigendecomposition means we can write the original matrix as
V x D x V^-1
Where D is a diagonal matrix with the eigenvalues, and V is the eigenvector.
If we multiply this by itself infinite times, it is
V x D^inf x V^-1
Which we can calculate in numpy using the below.
QUESTION
This is in Python.
I want to write a simple Markov-Chain thingy in about 75 lines of code on my Calculator. the only Module im able to import is "Random" and "Math".
heres a quick copy i made, should work in the python terminal, where it is supposed to work.
thats the only way my calculator will have it.
ANSWER
Answered 2021-Jan-27 at 12:17Figured it out, thanks guidot.
a dictionary fixes all my problems, since it doesnt allow duplicates and i can simply search for a word through the word itself, perfect for me.
QUESTION
I am currently trying to establish an interest rate model, where I am trying to incorporate a Markov-Chain that should represent the state of the economy, i.e. 2 states for "good" and "bad". The tricky part is that I assume that the observed interest rates (in my case monthly compounded YTM of US-Tbills) follow a CIR-process of the form, and the Markov-Chain is unobserved.
Usually this is done by using different filtering and smoothing techniques in the EM-Algorithm. Unfortunately, these tend to be quite complicated and I am really struggling to implement them manually in R. So my question would be, which R-package would be the best to get around this problem. I checked out depmixS4 and hiddenmarkov, but they don't work in my case. I would appreciate any hint. Thanks a lot!
...ANSWER
Answered 2020-Jun-24 at 13:40Not sure about the CIR process, but the msm package allows you to estimate continuous-time hidden Markov models: https://cran.r-project.org/web/packages/msm/index.html
QUESTION
I would like to identify the probability of an activity changes across time. Below is an example (from act1_1 to act1_16) of matrix that I was using to calculate transition probabilities between activities.
head (Activities) will return a tibble: 6 x 145
...ANSWER
Answered 2020-Apr-17 at 07:37Use apply with rep(..., each=10).
Assuming your data is as you say, then the following command will expand the data frame from one with 145 columns (serial + 144 10-minute intervals in one 24-hour period) into one with 1,441 columns (serial + 1440 1-minute intervals in one 24-hour period).
QUESTION
I'm new to computer security but I'm trying the same to make a toggle case attack starting from a dictionary password.
I read there that it's possible to alternate uppercase and lower case word starting from a dictionary to have all combinations (case sensitive).
I don't know what command to use and 4 now I'm stopped on standard dictionary attack
...ANSWER
Answered 2020-Mar-28 at 07:31Download toggle5.rule from the Hashcat repo on Github and try running this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install markov-chain
PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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