Find Jobs
Hire Freelancers

maximum likelihood sstimation of beta-normal in R

$10-30 USD

Closed
Posted over 6 years ago

$10-30 USD

Paid on delivery
I want to estimate the parameters of beta-normal distribution.I've used the maxLik package in r: library(VGAM) library(maxLik) alfa=2;beta=3;mu=0;sigma=1 n=100 x=rbetanorm(n,alfa,beta,mu,sigma) logLikFun=function(w){ alfa=w[1] beta=w[2] mu=w[3] sigma=w[4] ll={-n*log(beta(alfa,beta))+(alfa-1)*sum(log(pnorm((x-mu)/sigma,mean=0,sd=1)))+(beta-1)*sum(log(1-pnorm((x-mu)/sigma,mean=0,sd=1)))-n*log(sigma)+sum(log(dnorm((x-mu)/sigma,mean=0,sd=1)))} ll } mle=maxLik(logLikFun,start=c(alfa=3,beta=2,mu=1,sigma=2)) summary(mle) i want to estimate the parameters of beta-normal distribution.I've used the maxLik package library(VGAM) library(maxLik) alfa=2;beta=3;mu=0;sigma=1 n=100 x=rbetanorm(n,alfa,beta,mu,sigma) logLikFun=function(w){ alfa=w[1] beta=w[2] mu=w[3] sigma=w[4] ll={-n*log(beta(alfa,beta))+(alfa-1)*sum(log(pnorm((x-mu)/sigma,mean=0,sd=1)))+(beta-1)*sum(log(1-pnorm((x-mu)/sigma,mean=0,sd=1)))-n*log(sigma)+sum(log(dnorm((x-mu)/sigma,mean=0,sd=1)))} ll } mle=maxLik(logLikFun,start=c(alfa=3,beta=2,mu=1,sigma=2)) summary(mle) but it gives error: ---------------------------------- Maximum Likelihood estimation Newton-Raphson maximisation, 4 iterations Return code 2: successive function values within tolerance limit Log-Likelihood: -86.16515 4 free parameters Estimates: Estimate Std. error t value Pr(> t) alfa 3.000 Inf 0 1 beta 2.941 Inf 0 1 mu 1.000 Inf 0 1 sigma 2.000 Inf 0 1 -------------------------------------------- the problem is the infinite value for the errors which is not acceptable. I would be pleased if someone could solve this problem.
Project ID: 15362954

About the project

4 proposals
Remote project
Active 6 yrs ago

Looking to make some money?

Benefits of bidding on Freelancer

Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
4 freelancers are bidding on average $45 USD for this job
User Avatar
Hi I am a very experienced statistician and academic writer. I have completed several PhD level thesis projects involving advanced statistical analysis of data. I have worked with data from several companies and have done projects involving high level quantitative analysis and data interpretation skills to study the trends, time behaviour and compare the variables in the data. I can do advanced level analysis in SPSS, R, WEKA, TABLEAU and excel tools like machine learning, hypothesis testing, forecasting, T-test, ANOVA etc. Looking forward to discussion, Best Regards, Suyash
$100 USD in 1 day
4.8 (99 reviews)
6.7
6.7
User Avatar
no need to worry Relevant Skills and Experience r studio, statistics Proposed Milestones $25 USD - full work
$25 USD in 1 day
4.9 (47 reviews)
5.4
5.4
User Avatar
I am an engineer and confident of what I can do and deliver. I can work on Arduino, Python, Matlab, among others. I am asking for a chance to work with you on your project. Thanks Relevant Skills and Experience Matlab and Mathematica, R Programming Language, Software Development, Statistical Analysis, Statistics Proposed Milestones $25 USD - initial milestone
$25 USD in 1 day
4.8 (21 reviews)
4.9
4.9
User Avatar
A proposal has not yet been provided
$30 USD in 8 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of TURKEY
Turkey
0.0
0
Payment method verified
Member since Oct 9, 2017

Client Verification

Thanks! We’ve emailed you a link to claim your free credit.
Something went wrong while sending your email. Please try again.
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.