19 Nov
2015
19 Nov
'15
1:43 a.m.
Thanks Mr. Blackwell. I have some questions (again) about Amelia:
1) I have try Amelia with same data for 3 times and Amelia give 3 different
answer, this is the consequence of "Multiple Imputation -
Expectation-maximization with bootstrapping" method?
2) What the function of "Set as Time-Series Variable"?
3) In output file options, the default of Number of Imputed Datasets is 5
datasets, so it will be give 5 difference imputed value. If I increase the
Number of Imputed Datasets, could it will be give better answer
(convergence imputed value)?
I am expecting to receive the answers of my questions from you. Thanks for
your attention.
Kind regards,
Iqbal Hanif
On 19 November 2015 at 10:27, Matt Blackwell <mblackwell(a)gov.harvard.edu>
wrote:
Hi Iqbal,
From everything you've described, it sounds like you are using AmeliaView
correctly. Hope that helps!
Cheers,
Matt
~~~~~~~~~~~
Matthew Blackwell
Assistant Professor of Government
Harvard University
url: http://www.mattblackwell.org
On Wed, Nov 18, 2015 at 9:34 PM, Iqbal Hanif <iqbal.hanif.ipb(a)gmail.com>
wrote:
Thanks for replying, Sir. For information, I use
R version 3.2.2. There
are some steps that I'm doing with Amelia II package and AmeliaView:
1) I have a data (.csv format, you can see production_index.csv) that
contains 2 variable (Date and Production Index). There are 102 observations
that consists of date data from January 2007 to June 2015 and the
production index data for each month.
2) I make a simulation. I replace some data randomly with NA, so there
are 88 data of production index and 14 NA data of production index (you can
see production_index_with_miss.csv)
3) I open the Amelia View and then import production_index_with_miss.csv
to the Amelia package. When I click "Impute!", the error log appear, and
the message at the error log is "Amelia Error Code: 13 You cannot set all
variables (or all but one) as ID variables".
4) So I change the date variable into a number from 1 to 102. I re-import
production_index_with_miss.csv to the Amelia package and then click
"Impute!". After that, there are 5 .csv data that contains the impute data.
Am I do right? Or there are something wrong with my steps? Thanks for
your attention.
Kind regards,
Iqbal Hanif
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