CSE 150: Introduction to Artificial Intelligence: Probabilistic Reasoning and Decision Making

I'll hold additional office hours this week Wed & Thu 9:45-10:45 am.  (But there will be no office hours on Friday morning.)

If you downloaded an early copy of the HW, your print-out may contain a typo.  In 6.3a, the sentence should read "Consider the policy that chooses action a=0 in each state."  Sorry for the inconvenience.

In a class of this size, there are always a few excused absences from quizzes.  So please refrain from talking about the quiz on piazza until we make sure that all of the students have taken it.  Thank you.

I will hold extra office hours today from 3-4 pm.

The teaching staff has posted a new lecture notes resource.

Title: Lecture14.pdf
http://www.piazza.com/class_profile/get_resource/hpteegomext2eb/hs55benl48u3xn

Due date: Feb 25, 2014

You can view it on the course page: https://piazza.com/ucsd/winter2014/cse150/resources

For HW5 make sure to download the most recent version of this file (posted 1:30 pm, Thursday).

Before updating $p_i^{\prime }s$ at each step, you must be doing something like $p\mathrm{\_}old=p\mathrm{\_}new$. This is not correct because after doing this both $p\mathrm{\_}old$ and $p\mathrm{\_}new$ reference the same object. Any value you change in $p\mathrm{\_}new$ gets changed in $p\mathrm{\_}old$ too which you don't want. The correct way of doing this is $p\mathrm{\_}old=p\mathrm{\_}new[:]$.
An example:
a = [1,2,3]
b = a
a[1] = 6
Both a and b become [1,6,3]