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Hi all,

Moed B exam and solution published.
Grades for Moed B + final course grade are available under the "exam" tab. Grades will processed by the Mazkirut soon.

Thanks,

Regev

Exercises 4 and 5 have been checked and returned in the hive. Their grades are posted in the HW tab.

For those who did Moed A, final grades have been calculated, and are available under the exam. They will be submitted to the Mazkirut soon.

Let me know if there are any issues or appeals.

Thanks!

Dean A. (guest) 12 Feb 2017 19:08
in discussion Discussions / HW5 » killed message on nova

Don't know if this is still needed, but ssh'ing to "gauss" can only be done after connecting to Nova

by Dean A. (guest), 12 Feb 2017 19:08
Srulik (guest) 12 Feb 2017 15:45
in discussion Discussions / HW5 » killed message on nova

The ssh command is the same, just didn't find the server..

I was stupidly multiplying var by I , thanks for that =) does go in seconds now

by Srulik (guest), 12 Feb 2017 15:45
Assaf (guest) 12 Feb 2017 15:24
in discussion Discussions / HW5 » killed message on nova

1. Maybe one of /usr/bin/ssh, or /bin/ssh works ?
Every mac comes with ssh preinstalled - so you just need to find it.
Maybe try in another terminal (try running ssh under: Terminal/bash/konsole/tcsh)

2. In HW5, if you use numpy just for the heavy part (the distances ||x_i - u_m|| ^ 2)
then the code runs in a few seconds, so there is no need to do anything special.

by Assaf (guest), 12 Feb 2017 15:24
Dor (guest) 12 Feb 2017 15:06
in discussion Discussions / HW5 » מועד הגשה

The programming assigment is taking longer than expected.
Although it seem short, its cimplicated.
We had a test on this course about 1 week ago, and we have tests on other courses too.
Considering we didn't receive the grades for hw4,
Please consider an extension of few days, for the programming part only.

Thanks.

by Dor (guest), 12 Feb 2017 15:06
Srulik (guest) 12 Feb 2017 14:33
in discussion Discussions / HW5 » killed message on nova

I am using bash on mac, can it / does it work the same?
I'm getting 'ssh: No match'

by Srulik (guest), 12 Feb 2017 14:33
Dean A. (guest) 12 Feb 2017 14:15
in discussion Discussions / HW5 » killed message on nova

Try running it one of the "gauss" computers instead, it will probably be a lot less busy.
After connecting to Nova, you can ssh to one of them through Putty, using the command "ssh gauss-**.cs.tau.ac.il".
The password it requires is the same as the one you used to log in to Nova.

by Dean A. (guest), 12 Feb 2017 14:15
killed message on nova
Srulik (guest) 12 Feb 2017 14:03
in discussion Discussions / HW5 » killed message on nova

I got the code running perfectly okay on my computer, but when I try running it on nova I get a 'killed' message on different running times (it sometimes comes before the distributions are calculated and sometimes already after the graph and images are saved).
I tried running also the old hw3 code which used to work fine and now also it gives a killed message at different points.
Anything to be done? Is it because of current overload on the servers?

killed message on nova by Srulik (guest), 12 Feb 2017 14:03
Regev SchweigerRegev Schweiger 12 Feb 2017 10:42
in discussion Discussions / HW5 » מועד הגשה

Not sure, probably morning

by Regev SchweigerRegev Schweiger, 12 Feb 2017 10:42
Regev SchweigerRegev Schweiger 12 Feb 2017 10:41
in discussion Discussions / HW5 » Programming Assignment

Your call. I assume you will get partial points, which is better than nothing.. :)

by Regev SchweigerRegev Schweiger, 12 Feb 2017 10:41
ofer (guest) 11 Feb 2017 20:25
in discussion Discussions / HW5 » Programming Assignment

Thanks but its what im doing… and I cant get it to work.
I'm battling the code for 3 days without any real progress.

Is there a point to submit an un-working code?

by ofer (guest), 11 Feb 2017 20:25

Thank you.

by אסף (guest), 11 Feb 2017 19:00
the (guest) 11 Feb 2017 18:47
in discussion Discussions / HW5 » מועד הגשה

הבעיה היא שהתרגיל התכנותי עושה להרבה אנשים בעיות עם הדיבוג, ובגלל שאנחנו בתקופת מבחנים זה מאוד מקשה עלינו.
אם היינו רואים קודם את ציוני שב 4, אז היינו יודעים אם בכלל אפשר לוותר על הכנת התרגיל

by the (guest), 11 Feb 2017 18:47
Student (guest) 11 Feb 2017 16:00
in discussion Discussions / HW5 » מועד הגשה

Which hour on Monday?

by Student (guest), 11 Feb 2017 16:00

There will be no extra time - this exercise is short, with an extended deadline, and is non-mandatory (in the 5/6 sense). Note that the checker won't pick it up until Monday.

Re: מועד הגשה by Regev SchweigerRegev Schweiger, 11 Feb 2017 15:17

Here's a recipe that can help:

1. Calculate $\log P(z_i = j, x_i)$ - do this by using the log of the expression for the pdf of normal directly. Let's call this number $b_{i,j}$.
2. Calculate $\log P(x_i) = \log(\sum_{j=1}^K P(z_i = j, x_i)) = log(\sum_{j=1}^K exp(b_{i,j}))$. This can be done by using the logsumexp function in numpy.
2. Calculate $\log P(z_i = j | x_i)$. By Bayes' law, this is equal to $\log P(z_i = j , x_i) - \log P(x_i)$, which uses quantities calculated in 1+2.

There will be no extra time - this exercise is short, with an extended deadline, and is non-mandatory (in the 5/6 sense). Note that the checker won't pick it up until Monday.

Programming Assignment
ofer (guest) 11 Feb 2017 13:42
in discussion Discussions / HW5 » Programming Assignment

I can't get my code to working.. I understand what to do and what I need to calculate but I keep getting errors with dividing by zero or singular matrix or god knows….

Can we get some directions on how to implement the calculations and some extra time to do it?

Thanks,
Ofer.

Programming Assignment by ofer (guest), 11 Feb 2017 13:42
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