Gov2001 April 2006

gov2001@lists.gking.harvard.edu

36 participants
56 discussions

[gov2001-l] ANNOUNCE Office Hours Changed, Section Notes Posted

by dhopkins＠fas.harvard.edu

Hi All, * First, to better line up with our problem set schedule, I will shift my office hours to Friday, April 21st from 4-6 PM in room N-018. I won't have Wednesday office hours, but Ian will hold his regular Tuesday office hours this upcoming week (April 18th), and we will see how that works for the final few weeks. * Also, the notes and R code from tonight's section are now posted. Good weekends to all! Best, Dan ---- Ph.D. Student Department of Government Harvard University Tutor, Currier House dhopkins(a)fas.harvard.edu http://www.danhopkins.org

18 years

[gov2001-l] PS6: Expected values (part d)

by lbarnes＠fas.harvard.edu

Hi List, A question of clarification for the problem set: what exactly do you mean by "predicted values" in the case of the probit model? i.e. in a continuous variable case it makes sense to predict the outcome variable, but this may not be very interesting here- should we be concentrating instead on the probability of seeing a particular outcome? thanks, Lucy

18 years

[gov2001-l] setting to the median

by jfvargas＠fas.harvard.edu

Hi all, I find the on-line Zelig manual unclear regarding how to set a set of variables to values other than the default mean in 'setx'. What is the syntaxs to set 'all the other' variables to their median? Juan

18 years

[gov2001-l] Explaining error messages

by sheldon.bond＠gmail.com

Greetings, I attempted some of the Whatif commands in R and they subsequently crashed my R session. The R program seems to kill the session after letting the code run for about an hour. My model had about 15,000 observations and about 15 variables and interactions. Does anyone have any intuition as to why this is occuring and has anyone run Whatif successfully? In addition, I attempted to use the "by" command in my Zelig models and got an error message informing me that I cannot create a vector of size 121 kb. Has anyone encountered this error, and does anyone have a suggestion of how to proceed? Regards, Sheldon

18 years

[gov2001-l] ANNOUNCE reminder: room change; other notes

by yohai＠fas.harvard.edu

Hi everyone, A few announcements/reminders to pass along: 1. *Room change: starting tomorrow, lecture will be held in CGIS N354* 2. A reminder that your memo offering suggestions on another group's replication is due at the beginning of lecture (2 PM EST for distance students). Please be on time, so that we can exchange memos and get them back to you as quickly as possible. Details about what we expect in the memos are available at the end of this handout: http://www.courses.fas.harvard.edu/~gov2001/Assignments/repassign.pdf 3. Gary will discuss model dependence and matching tomorrow, and Dan will build on these topics in section. Therefore, please be sure to read the previously assigned articles, available at the links below: http://gking.harvard.edu/files/matchp.pdf http://gking.harvard.edu/files/counterft.pdf 4. As previously announced, problem set 6 is now due Monday, April 17th at the beginning of lecture (2 PM EST for distance students). Hope you are having a nice weekend... Best, Ian

18 years

[gov2001-l] GEC Estimator

by king＠harvard.edu

programming the gec involves a bit more specialized plumbing than usual. If you want to give it a try, I'd start with the Gauss version, which has it all programmed in. (right, you probably don't know gauss, but the secret is that now that you've got the hang of R you also will be able to decipher most other stat'l programming languages). If you do it, let me know and we'll include it in Zelig with your name on it -- same for others who implement, or wrap existing, methods not already in Zelig. Gary -----Original Message----- From: "Jacqueline Chattopadhyay" <jchattop(a)fas.harvard.edu> Date: Saturday, Apr 8, 2006 6:33 pm Subject: Re: [gov2001-l] GEC Estimator Hi all, I'm wondering if anyone has worked with the Generalized Event Count (GEC) estimator. I see that the log-likelihood function is given on page 775 of Gary's article, "Variance Specification in Event Count Models." I assume that it's possible to enter the GEC log-likelihood function into R and then use ML estimation, as we do for other distributions. It looks, however, like one would need to find a way to program the three different forms that C_{i} could take into R and instruct the program to choose the appropriate one of those three when running ML. I don't know how to do this. It doesn't look like Zelig is pre-programmed to run models that assume the GEC distribution. I'm not sure where to begin with this and would much appreciate any insights. Thanks, Jacqueline ------=_Part_32691_31885762.1144535594252 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline <div>Hi all,</div> <div>I'm wondering if anyone has worked with the Generalized Event Count (GEC) estimator. I see that the log-likelihood function is given on page 775 of Gary's article, 'Variance Specification in Event Count Models." I assume that it's possible to enter the GEC log-likelihood function into R and then use ML estimation, as we do for other distributions. It looks, however, like one would need to find a way to program the three different forms that C_{i} could take into R and instruct the program to choose the appropriate one of those three when running ML. I don't know how to do this. It doesn't look like Zelig is pre-programmed to run models that assume the GEC distribution. I'm not sure where to begin with this and would much appreciate any insights. </div> <div>Thanks,</div> <div>Jacqueline</div> ------=_Part_32691_31885762.1144535594252-- Re: [gov2001-l] GEC Estimator"Jacqueline Chattopadhyay" <jchattop(a)fas.harvard.edu>To: gov2001-l(a)lists.fas.harvard.edu Reply-To: gov2001-l(a)lists.fas.harvard.edu

18 years

[gov2001-l] GEC Estimator

by jchattop＠fas.harvard.edu

Hi all, I'm wondering if anyone has worked with the Generalized Event Count (GEC) estimator. I see that the log-likelihood function is given on page 775 of Gary's article, "Variance Specification in Event Count Models." I assume that it's possible to enter the GEC log-likelihood function into R and then use ML estimation, as we do for other distributions. It looks, however, like one would need to find a way to program the three different forms that C_{i} could take into R and instruct the program to choose the appropriate one of those three when running ML. I don't know how to do this. It doesn't look like Zelig is pre-programmed to run models that assume the GEC distribution. I'm not sure where to begin with this and would much appreciate any insights. Thanks, Jacqueline

18 years

[gov2001-l] $\operatorname{P}$, $\operatorname{Pr}$, and $P$

by ghumphr＠fas.harvard.edu

Dear Professor King, Is there a difference between $\operatorname{P}$, $\operatorname{Pr}$, and $P$? Geoff

18 years

[gov2001-l] ANNOUNCE *problem set 6 extension*

by yohai＠fas.harvard.edu

Hi everyone, Given that you are working on the replications, we have decided to extend the deadline for Problem Set 6 until Monday, April 17th at the beginning of lecture (2 PM EST for distance students). Hopefully this will make your weekends a bit better... Best, Ian

18 years

[gov2001-l] Chronicle article: Sense of Injustice Can Lead Scientists to Act Unethically, Study Finds

by king＠harvard.edu

An article from The Chronicle of Higher Education was forwarded to you by: king(a)harvard.edu The following message was enclosed: Given some of the questions last Monday, I thought you might be interested in this. Gary This article, "Sense of Injustice Can Lead Scientists to Act Unethically, Study Finds" is available online at this address: http://chronicle.com/temp/email2.php?id=jm5JNTYdhXKVyDmHjX95vcyFJR8HrQby This article will be available to non-subscribers of The Chronicle for up to five days after it is e-mailed. The article is always available to Chronicle subscribers at this address: http://chronicle.com/daily/2006/04/2006040704n.htm _________________________________________________________________ Finding it hard to keep up with all that's happening in academe? The Chronicle's e-mailed Daily Report keeps you up-to-date in a matter of minutes by quickly summarizing current events in higher education while providing links to complete coverage on our subscriber-only Web site. The Daily Report and Web access come with your Chronicle subscription at no extra cost. Order your subscription now at http://chronicle.com/4free?es _________________________________________________________________ Visit us on the Web -- http://chronicle.com Careers & advice -- http://chroniclecareers.com Opinions & critique -- http://chroniclereview.com Arts & Letters Daily -- http://aldaily.com _________________________________________________________________ If you have other problems or questions, please send a message to help(a)chronicle.com _________________________________________________________________ Copyright (c) The Chronicle of Higher Education, Inc.

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Gov2001 April 2006