Search found 11 matches

by loooooo
Thu Mar 15, 2012 8:37 pm
Forum: Estimation
Topic: VAR & IRF: contemporaneous responses
Replies: 0
Views: 2370

VAR & IRF: contemporaneous responses

Hi, The error terms of a reduced VAR model are contemporaneously associated, so people often use Cholesky decomposition to orthogonalize them. However, in Eviews, I can only see the impulse responses at period 1 to, say, 10, but not the contemporaneous part, whereas Stata seems to report from period...
by loooooo
Mon Jan 16, 2012 12:23 am
Forum: Econometric Discussions
Topic: Negative Values in Time Series
Replies: 2
Views: 7471

Re: Negative Values in Time Series

Hi Shane, Not sure if you tried to log a % rate of change, but if you did, it's wrong. Since the rate of change is defined as "P(t)/P(t-1)-1," you should consider adding back 1 and log it, which will become "log(P(t))-log(P(t-1))" now. Inflation in annual term can't be higher tha...
by loooooo
Sat Jan 14, 2012 9:04 pm
Forum: Econometric Discussions
Topic: interpreting VAR and generalized impulse responses
Replies: 0
Views: 3577

interpreting VAR and generalized impulse responses

Hi all, Suppose two variables, X and Y, both of which are I(1) variables but not cointegrated. Hence, I difference them, and specify a VAR(p) model, where p can be chosen by AIC or SIC, if you'd like. Since I'm interested in the interaction between them, I'd ignore responses of each to a shock to it...
by loooooo
Mon Dec 26, 2011 1:10 am
Forum: Econometric Discussions
Topic: VAR Granger Casuality Test for FDI,Production and TFP HELP!
Replies: 1
Views: 3462

Re: VAR Granger Casuality Test for FDI,Production and TFP HE

Hi Lau, You should first read any econometrics textbook coz how you should go about it depends on data and sometimes it's very hard to make a judgement call without having a firm foundation on econometrics, but I can at least outline what you should be doing: 1. check if your variables are I(1) seri...
by loooooo
Mon Dec 26, 2011 12:54 am
Forum: Econometric Discussions
Topic: VECM - a weird case
Replies: 0
Views: 2429

VECM - a weird case

Hi, I've got three I(1) series, each of which is reported to have a unit root with no drift nor trend. Nevertheless, Johansen's testing procedure (both trace and max-eigenvalue tests) indicates 3 cointegrating relations when specified with a drift in CE and 2 without it. I know it can hardly be the ...
by loooooo
Mon Dec 26, 2011 12:34 am
Forum: Econometric Discussions
Topic: VECM - Interpretation of Estimates
Replies: 5
Views: 24476

Re: VECM - Interpretation of Estimates

Hi, Being not familiar with your 4 variables, I can't tell you much about the result, but it looks strange that a differenced term is entered into CE and as a result that the twice-differenced term of that variable appears in the equation. Are all your 4 variables I(1), including d(ASA)? Even if it ...
by loooooo
Thu Dec 22, 2011 7:44 pm
Forum: Econometric Discussions
Topic: Maximum eigenvalue versus trace tests: which one is better?
Replies: 1
Views: 6309

Re: Maximum eigenvalue versus trace tests: which one is bett

read this: Maximum eigenvalue versus trace tests for the cointegrating rank of a VAR process (Helmut Lüutkepohl, Pentti Saikkonen, Carsten Trenkler) The Econometrics Journal Volume 4, Issue 2, pages 287–310, December 2001
Hope it helps.
by loooooo
Thu Dec 22, 2011 10:42 am
Forum: Programming
Topic: cointegration lag choice
Replies: 2
Views: 4220

Re: cointegration lag choice

This is working beautifully.
Thanks Gareth!!
by loooooo
Thu Dec 22, 2011 10:37 am
Forum: Programming
Topic: cointegration lag choice
Replies: 2
Views: 4220

cointegration lag choice

Hi all, I wrote the code posted below, and seems to be working ok, except that the number of lags, which is needed to be specified as follows: grp.coint(s,numlag) Here I want numlag to be called from the matrix "vl" but it only takes the default value 4, even with the code written as below...
by loooooo
Wed Dec 14, 2011 7:34 am
Forum: Data Manipulation
Topic: repeatedly executing the same operations
Replies: 2
Views: 4242

Re: repeatedly executing the same operations

Thanks startz. That was why!
by loooooo
Wed Dec 14, 2011 4:31 am
Forum: Data Manipulation
Topic: repeatedly executing the same operations
Replies: 2
Views: 4242

repeatedly executing the same operations

Hi, I've been using Eviews for years but new to programming. I've obtained a code from this forum and modified as follows: %file = "C:\Desktop\MyData.xls" wfopen(page=ALL) %file for %s MO AXP BMY CSX CSC CAG COP DOW DD FE GIS HIG HPQ HON IBM IP KFT MCD MET NWS SWY SPG TGT KR TWX UNP WMT DI...

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