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This is the site for 6.034 Artificial Intelligence, with Professor Patrick Winston.

News

October 27, 2006

Problem set 4 postponed!

Take a break -- you've earned it. There is no problem set this week.

Tutorials on Monday will cover various topics that aren't represented in the problem sets.

October 26, 2006

Problem set 3

Problem set 3 has been graded once, but there are two problems with the grading.

  • Test case 34 is erroneous. If you failed it, it probably wasn't your fault. It's being fixed.
  • The test cases for alpha-beta didn't test that you actually make the correct move. Some people had alpha-beta procedures that conveniently let their better-evaluate function win all the time! These test cases will need to be adjusted.

Updated grades should be sent out by tonight. (If you submitted late, you will get your grade later.)

Quiz 2

Quiz 2 has been graded. You can pick up your quiz in recitation today or tomorrow.

Here's the grading breakdown to help you judge how you did:

Problem Max. points Thorough understanding Acceptable understanding Needs help
1A (Minimax) 6 6 6 < 6
1B (Alpha-beta) 20 ≥ 17 ≥ 11 < 11
1C (Iterative deepening) 10 10 ≥ 6 < 6
1D (Optimal alpha-beta) 14 ≥ 10 ≥ 8 < 8
1 (Game search) 50 ≥ 43 ≥ 31 < 31
2A (Forward checking, neighbors) 20 ≥ 16 ≥ 10 < 10
2B (Forward checking through singletons) 20 ≥ 18 ≥ 14 < 14
2C (Most constrained first) 10 ≥ 8 ≥ 5 < 5
2 (Constraint propagation) 50 ≥ 42 ≥ 29 < 29
Total 100 ≥ 85 ≥ 60 < 60

October 24, 2006

As a reminder, Quiz 2 will be held tomorrow, Wednesday, October 25, from 11:05AM -11:55AM, in 32-123, where the lectures are held. Past exams can be accessed here.

October 12, 2006

Lectures for Oct 18 and Oct 23 have been swapped. Calendar reflects change.

October 12, 2006

Problem set 3 has been released, covering constraint propagation and game search. It's due next Wednesday, October 18.

October 11, 2006

Automatic grades for Problem Set #2 have been sent out. If the email is blank, you did not submit anything for the pset. If you submitted late, but did not email 6.034-tas, then do that now. If you did not receive a grade, it is possible we don't know you're taking the class. Send an email to 6.034-tas.

September 28, 2006

Problem set 2

Problem set 2 is out. It's due Wednesday, October 4.

We've now written up a problem set grading policy, which tells you things like:

  • How to submit a problem set late (for a 25% penalty)
  • What GraderBot does
  • Why you should run the tester and make sure it runs successfully before you submit

Quiz 1 results

6.034 never calculates class averages, because it is not graded on a curve. However, you can use this table to assess how you did on quiz 1.

Problem Max. points Thorough understanding Acceptable understanding Needs help
1 (Search) 50 ≥ 37 ≥ 30 < 30
2A (Backward chaining) 20 ≥ 16 ≥ 10 < 10
2B.1 (Forward chaining) 20 ≥ 18 ≥ 16 < 16
2B.2 (Infinite loop) 10 If you got this problem correct, consider it a bonus to the entire quiz.
Total 100 ≥ 71 ≥ 56 < 56

September 27, 2006

There is no mega-recitation this week.

You can pick up your graded quizzes in your recitation on Thursday or Friday, or at Prof. Winston's office (32-251).

September 26, 2006

Tutorial hours will be held on Tuesday this week. Monday was a student holiday so Monday students can go to ANY Tuesday tutorial they can make. The tutorials will be a quiz review for Wednesday's quiz. Bring questions about material you're unsure about.

The exam will cover the material learned so far in the course, which can be found at Calendar. Exam questions are quite like what you've seen in mega-recitation and tutorials. Past exams can be accessed here.

The terminology has changed over the past several years, and no previous 6.034 class has been in this format with four quizzes, so the mega-recitation still provides the best example problems for quizzes.

In particular, we will not use the terms "trigger" and "visited list" this year, the quiz will be shorter than previous years' Quiz 1, and it will of course only cover topics we've covered in the class so far.

September 25, 2006

Reminder: There will be an in-lecture quiz on Wednesday,September 27. As always in 6.034, the quiz will be open book and open notes; bring anything you want within reason. Laptops are not considered within reason.

September 22, 2006

Problem set 1 has been graded, and the grades were e-mailed out by GraderBot. If you haven't received any grade e-mails yet, we might not know you're in the class, so e-mail the TAs.

The solutions to pset 0 and solutions to pset 1 have been released.

September 19, 2006

An erratum has been added to Problem set 1, clarifying some inconsistency in the use of the word "trigger".

September 17, 2006

Grades for PS0 have been e-mailed out.

If you didn't receive a grade, it may be that we haven't graded your problem set yet. It could be because we don't know your Athena username, or because you submitted it late, in which case it will be sent out in a second round of grading.

(If you are listed on Tutorial assignments with an address that isn't @mit.edu, please let us know your Athena username. If you are a cross-registered student, you are supposed to be able to acquire an Athena username.)

September 14, 2006

Mega-Recitation will be held tomorrow, Friday 11AM-Noon, in 32-123.

Problem set 1 has been released.

September 13, 2006

Problem set 0 is due at midnight tonight.

Thursday recitation room assignments have been made. Check the Recitation assignments page for where your section will meet.

September 12, 2006

Recitations have been assigned. Check the Recitation assignments page for which one you're in.

Some of the tutorials that meet on Monday have been assigned different rooms since yesterday. Check the updated tutorial assignments page for permanent room assignments.

September 8, 2006

Tutorials have been assigned. Check the tutorial assignments page for which one you're in.

Recitations will be assigned by Wednesday.

September 5, 2006

Based on discussions with students from previous years, we are introducing several changes in the fall, 2006 version of 6.034, including the following:

Quizzes and evaluations

This year, we will have 4 quizzes instead of 2, so as to both reduce time pressure and test less material per quiz.

The final will be organized into parts corresponding to the quizzes. If you have a bad day on one of the quiz days, you can make up for it on the final, as we propose to give you the higher of the two grades.

All quizzes and the final are open book, open notes, open problem sets and solutions, open everything, except for computers.

Tutorials and recitations

As in previous years, we will have tutorials on Mondays and Tuesdays and recitations on Thursdays and Fridays. In addition, this year we are introducing the concept of a megarecitation, to be held 11–12 on Fridays. Roughly, the purpose of each element is as follows:

Element Purpose
Lectures: To introduce most of the material and provide the big picture
Tutorials: To provide help with the homework and assess understanding
Mega recitation: To demonstrate how to work problems of the kind that tend to show up on the quizzes
Regular recitations To introduce some of the material, answer questions, provide additional

perspective, and be a venue small enough for discussion

Times and places of recitations and tutorials

We will ask you to fill out a schedule form in the first lecture so that we can make assignments. Ignore the times listed by the registrar.

There will be no tutorials, regular recitations, or megarecitation during the first week of class, the week of September 4.

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