Search found 7 matches

by marwa
Mon Jan 12, 2009 2:39 pm
Forum: Estimation
Topic: Ordered probit model
Replies: 16
Views: 38256

Ordered probit model

Dear all, I am using an ordred probit model, in which my latent variable is buy, sell or no transaction. I assigned +1 to buy, 0 for no transaction , and -1 to sell. I ran the regression with latent variable as my dependent variable against a list od independent variables, and it went OK with no err...
by marwa
Sun Dec 21, 2008 10:58 pm
Forum: Estimation
Topic: What is the Fitted values in GARCH estimation?
Replies: 6
Views: 11777

Re: What is the Fitted values in GARCH estimation?

Thank you Gene.
by marwa
Wed Dec 17, 2008 1:37 pm
Forum: Estimation
Topic: What is the Fitted values in GARCH estimation?
Replies: 6
Views: 11777

Re: What is the Fitted values in GARCH estimation?

Thank you Gareth. One more question, do you know of any other way to compare among different GARCH type models, I am using the same dependent and independent variables in GARCH (1,1), TGARCH and GARCH in mean, and want to find the model that has the best fit, Should I use the information criteria, o...
by marwa
Wed Dec 17, 2008 12:42 pm
Forum: Estimation
Topic: What is the Fitted values in GARCH estimation?
Replies: 6
Views: 11777

Re: What is the Fitted values in GARCH estimation?

Thanks Gareth for the prompt reply.
If I want to output the GARCH equation, I go to proc and select the "make the GARCH variance series", is this the fitted variance?
by marwa
Wed Dec 17, 2008 9:56 am
Forum: Estimation
Topic: What is the Fitted values in GARCH estimation?
Replies: 6
Views: 11777

What is the Fitted values in GARCH estimation?

Dear all, What is the fitted values in GARCH estimations, is it the fitted values for the mean equation or the variance equation? ALso can I use the J test to compare between GARCH(1,1) and TGARCH models. What is the best way to compare between different GARCH models, is it the maximum likelihood, o...
by marwa
Thu Dec 11, 2008 11:19 am
Forum: Estimation
Topic: likelihood ratio test and GARCH models
Replies: 5
Views: 14382

likelihood ratio test and GARCH models

Dear all, I am working on different types of GARCH models like the simple GARCH (1,1), GARCH in mean, Threshold GARCH, and exponential GARCH models. How can I compare among them using the Likelihood Ratio test, I have eviews 6 and I can't find a command for likelihood ratio, it is only available in ...
by marwa
Tue Nov 25, 2008 9:53 am
Forum: Estimation
Topic: why do I get negative Rsquared in SURE?
Replies: 28
Views: 37803

why do I get negative Rsquared in SURE?

Dear all, I want to estimate a system of equations simaltaneously,I am running a the system using SURE (seemingly unrelated regression). I usually get negative R squared for at least one or two of the equations. Why would this happen? and if this is possible how can I comment on the model. This also...

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