![[--------------------------------------]](http://www.cnbc.cmu.edu/~noelle/share/spy_grad.gif){kind=small}
HW #4 Bug
For Question 4.11 in the fourth assignment, do not reduce the value of sigma to zero, as suggested. In version 2 of PDP++, this results in an error. Instead, reduce the value of sigma to a very low value, such as 0.00001. Report the value that you use.
Scheduling for Term Project Status Reports Has Begun
During lecture today we began to schedule times for the oral status reports for student term projects. The tentative schedule is available online. If you have not scheduled a time to present your oral report, please contact the teaching team at "noelle@cnbc.cmu.edu", suggesting a day for your report. There should be no more than 8 reports on any given day.
Assignment #2 Due Date Changed AGAIN
Since a graded assignment has yet to be returned to the class, the due date for the second assignment has been delayed once again. This assignment is now due on Tuesday, February 23 at 9 A.M. (the start of lecture). The usual late penalties apply, so late assignments will be accepted (at a penalty) through the following Thursday. You have my most sincere apologies for the delay in feedback on the first assignment.
Cluster Office Hours
In hopes of helping you with your second homework assignment, Steve will spend some time in a computer cluster to answer questions. He will be available in Wean Hall 5202/5204 on Wednesday, February 17th from 4 P.M. till 5 P.M..
Assignment #2 Due Date Changed
Since a graded assignment has yet to be returned to the class, and for a number of other reasons discussed during lecture today, the due date for the second assignment has been delayed. This assignment is now due on Thursday, February 18 at 9 A.M. (the start of lecture). The usual late penalties apply, so late assignments will be accepted (at a penalty) through the following Monday.
Cluster Office Hours
In hopes of helping you with your second homework assignment, David will spend some time in a computer cluster to answer questions. He will be available in Wean Hall 5202/5204 on Tuesday, February 16th from 5 P.M. till 6 P.M.. We recognize that an hour is a short time, so please come with specific questions already in mind. If you cannot meet at this time, and you have questions, please send us electronic mail to make an appointment at another time.
Cluster Office Hours
In hopes of helping you with your first homework assignment, both members of the teaching team will be spending time in a computer cluster to answer questions. David will be available in Wean Hall 5202/5204 on Friday, January 29th from 5 P.M. till 6 P.M.. Steve will be available in the same room on Monday, February 1st from 4 P.M. till 5 P.M.. We recognize that an hour is a short time, so please come with specific questions already in mind. If you cannot meet with us at either of these times, and you have questions, please send us electronic mail to make an appointment at another time.
PDP++ HW#1 Update
It looks like we're going to be stuck using Version 1.2 of PDP++ for the foreseeable future. Thus, I have created a 1.2 compatible version of "cube.proj.gz". This means that you should be able to run the Necker Cube project now, just as described in the Assignment #1 Specification.
Also note that I have moved the 1.3 versions of all of the project files into a "v1.3" subdirectory. This means that the project file called "jets-n-sharks.proj.gz" is now compliant with Version 1.2 of PDP++. I have left "tmp-jets-n-sharks.proj.gz" in place, however, as a symbolic link. You should feel free, though, to now use "jets-n-sharks.proj.gz" during the first part of the homework assignment.
Mailing List
I have created an electronic mailing list for this course. Right now, the list only contains enrolled students. If you are not receiving messages from this list, but you would like to, please let me know and I will add you to the list.
PDP++ Fixes
Thank you all for your patience with my technical difficulties
during our first visit to the computer lab. As you recall, there
were two difficulties. First, the proper defaults file was not
available, causing some problems with cs++. Second,
the project files for the first homework assignment were not
working, for some reason. Here are some (at least temporary)
solutions.
First, you need to obtain a copy of the defaults file. This may be found in "/afs/andrew/hss/psy/pdp-IVlib/homework/hw1/cs.def". You should copy this file either to your home directory or to the directory in which you are working. This may be done with a command like:
cp /afs/andrew/hss/psy/pdp-IVlib/homework/hw1/cs.def ~/cs.def
... or ...
cp /afs/andrew/hss/psy/pdp-IVlib/homework/hw1/cs.def ~/pdp++/hw1/cs.def
The better option is the first, placing the defaults file in your
home directory. This should allow you to create a new project
using cs++ without resulting in any warnings about a
missing defaults file.
Concerning the homework assignment project files, it turns out
that these are not readable by the version of cs++
which is currently installed on Andrew. I am in the process of
getting a newer version of cs++ installed. In the
meantime, I have created another version of the Jets and Sharks
network - one that works with the older version of this program.
This older Jets and Sharks network is in the file:
/afs/andrew/hss/psy/pdp-IVlib/homework/hw1/tmp-jets-n-sharks.proj.gz
You may use this temporary project file until the new version of
cs++ is installed. It should behave identically to
the new version.
If you still have any problems getting the Jets and Sharks network to work on Andrew, please feel free to contact me at noelle@cnbc.cmu.edu.
Again, thanks for your patience.
Class syllabus has been updated to
move a required reading (PDP++ Manual, Chapter 16)
from January 26 to March 16.
Class gatherings on January 21 and March 04 will be held in Wean Hall, rooms 5202 and 5204.