Exam grades

We have released the grades. The min,max,mean,median,mode, and std were 54,142,103.4,104,104, and 17.2, respectively. If you see a 0 in FD, and you took the exam, you need to contact us (Prof. Scherlis and me) immediately. We will be setting the final grades for the course over the next few days. So, we cannot, at this time, tell you what exactly scores will qualify for A,B,C, etc. We will have all grades entered by Friday afternoon.

FYI

Professor Scherlis taught the lecture on concurrency. You would be surprised how many people missed that question. Now I don't feel so bad that I didn't learn everyone's names. Have a nice break, whoever you are.

Some lecture PDFs

You can get PDFs for most of my lectures at http://www.cs.cmu.edu/~wls/211/42/. Note that these duplicate what you already have on paper and in the "thumbnail" view of the video tab. --Bill

The final

You may bring one page of notes, just like the midterms.

Average Scores

For those of you curious about how you are doing in the course, I've posted some stats about all of the graded items. They can be found at https://www.cs.cmu.edu/~211/content/averages/. Note that the stats are raw scores, not percentages. Also note that anyone scoring a zero on an item will not count towards the stats.

Chess Scores

I wrote a few scripts to parse the chess output and upload to FrontDesk. There are numerous places for errors in these scripts and although I looked at a few cases for correctness, you should check to make sure your scores are correct. If you have any questions or concerns, email me.

Exam detail

This is from the latest HUB posting, but please double check: 15211 1 FUND DATA STRUCT ALG Mon. December 17 08:30AM-11:30AM MCCONOMY. --Bill

Sample exam

Here is an sample exam and its solutions. Good Luck!

Review for Final

The review for the final will be at 4pm on Saturday, Dec 15 in Wean Hall 7500. Please post questions to the discussion board prior to the session so that the TAs know what to cover.

Recitation assignments -- IMPORTANT

It is the time of year when TAs are contemplating the assignment of TA discretionary points. If you are attending a section other than the one to which you are officially assigned in the HUB, please notify BOTH of the TAs involved, so the correct TA can assign you points for participation. Otherwise you may fall through the cracks and end up with no TA discretionary points.

Monday Office Hours Canceled

I have an exam scheduled during my usual time for office hours on Monday. Please email me if you want to set up a meeting sometime later in the week.

Chess Server Info

Here is a script that you can use to check to see how many times in a row you have beaten BachChoy and JackBach. It should be updated by the minute. http://www.link.cs.cmu.edu/211/chess-results.html And in case you missed it -- the account creation link. You will need to provide your andrew id, a handle for the chess server, and create a password for the chess server (not your andrew password)

Chess Fixes

It has come to our attention that there were a few minor errors in Standalone.java and SimpleBoard.java. I have fixed them and and updated the stubs, which you can use to update your code as desired. Also, I fixed up the section on the timers, which was a bit out of date. Sorry if this caused major confusion. Also, if you have questions about anything in the assignment, please check the bboard--Owen and I have been making an effort to clarify things there if they are asked.

Office Hours

My office hours tomorrow will be in WeH 3406 on the off chance that anyone wants to come for them.

11/27 Anthony Office Hour canceled

Anthony's office hour tuesday (11/27) will be canceled due to break.

Quiz 4

Quiz 4 will be given during recitation next week (28th Nov). Don't forget to review your material for it! Happy holidays!

Chess Server Account Signup

The chess server account sign-up page is now up and running. You will need to enter your andrew id, a handle for your chess server account, and a password for your chess server account. This password should not be the password you use for anything else. Your server handle will be shown when you play games, on the ranking site (yet to be activated), and when people see who is online. You should receive a confirmation email (on andrew) after your account has been created. If you have any problems with account creation, email me or Will. http://www.link.cs.cmu.edu/211/sign-up.html

Chess Fixed

The chess assignment should now be completely fixed. If you have any problems with FrontDesk, please email me. I made significant revisions to the assignment from last semester and obviously my testing was not sufficient the first time around. If you already started the assignment you may want to download the stubs again. Sorry for the inconvenience. Hope you have fun completely destroying the bot I wrote when taking the course as revenge!

The State of Chess

I incorrectly deployed the chess assignment to FrontDesk. We are working to correct the problem, and it will be fixed tonight. I will make another post to the portal when everything is fixed. There will be no changes to the code you need to implement (some files just need to get moved around and compiled correctly).

Exam Correction

For the compression question part c) on the exam: "For a given input, X = x1, x2, x3, ...xn, there is exactly one Huffman tree which will produce a maximal compression ratio." The official answer we graded by was "sometimes" The one instance where there is exactly one tree for the maximum compression ratio is for an empty file (only 1 such tree exists). Since we wrote "x1, x2, x3, ...xn", it is not clear that the length of the file could be 0. So if you wrote "sometimes" or "never" you should receive full credit. If you need a score correction for THIS part of the question, please contact YOUR TA for a score change.