15.073 Logistical & Transportation Planning Methods
Fall 2014
Instructors: Arnold I Barnett, Richard Charles Larson, Amedeo R Odoni, James B Orlin
TA: Koki Ho
Lecture: MW 10:30-12:00 (5-134)
Information:
Announcements
Koki Ho's name has been added to evaluation surveys
Dear Urban OR Students:As announced in class today, the name of our tireless TA, Koki Ho, has been added to the evaluation sites for the Urban OR course. Professor Larson and I encourage those of you who have already filled out their evaluations to please go BACK in (http://web.mit.edu/subjectevaluation/) and complete entries for Koki. And thank you, once again, for being part of our class.
Best wishes,
Amedeo Odoni
Announced on 10 December 2014 5:44 p.m. by Amedeo R Odoni
Quiz Problem and Solution posted
Hello class,Well done for the semester! The Quiz 2 problem and solution are posted. If you haven't got your results, please email me.
For your information, the URL that Prof. Larson mentioned in the class is: http://web.mit.edu/mitssrc/nsf/index.html.
Thank you very much! It was very nice to work with you guys. Good luck for the other exams if you have any and have nice holidays!
Best,
Koki
Announced on 10 December 2014 11:11 a.m. by Koki Ho
No Office Hour Today
unless you really want one:)Well done for the quiz! Get some rest and see you on Wednesday for the final roundup!
Best,
Koki
Announced on 08 December 2014 1:26 p.m. by Koki Ho
About Past Quiz 2006 P2(g)
Hello class,
Thanks to Matthew Gombolay, we found another mistake in the past quiz solution: 2006 P2(g).
In the case of sector A, when 0.5<x<1, the mean distance is P[min(2(1-x)+y_B,1)] as the solution says, but this is 5/6 instead of 3/4. The remaining calculation is also affected accordingly.
Thank you. sleep well tonight and good luck for the quiz:)
Best,
Koki Ho
Announced on 07 December 2014 7:50 p.m. by Koki Ho
About Past Quizzes
Hello class,Hope you are enjoying the pre-quiz weekend.
I have got some questions about the past quizzes, and apparently there are some mistakes in the solutions. The following are those I recognize so far.
- In 2005 Quiz P2(c), the solution says that Mean A-to-B
response distance is 3pi/4. However, this ignores the fact that an
ambulance always travels the shortest circumferential distance. If
you consider that, it becomes (2/3){11pi/16} + (1/3){3pi/4} =
17pi/24. Thank you for pointing this out, Yoo Joon Kim.
- Also, in 2005 Quiz P2(f) Condition 3,
(3/8)*(3π/8)*0.5+(5/8)*(5π/8)*0.5 should be 17π/64 instead of
19π/128 in the solution. Thank you for pointing this out, Tatsuya
Doi.
Also, there are some advanced problems about location theory in the past quizzes. We did not cover location theory in detail this year; so you don't need to be able to solve all of them. As long as you understand the materials in the lecture slides and homework sets, you will be fine for the quiz 2.
If you have any questions, please feel free to email me. Thank you and good luck:)
Best,
Koki
Announced on 07 December 2014 12:02 a.m. by Koki Ho
