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MachineLearning-Lecture19

Instructor (Andrew Ng) :All right, good morning. So just one administrative thing before we go into today’s technical material. So let’s see. The final projects poster session presentations will be on Wednesday the 12th of December. I guess that’s one week from this Wednesday. So similar to the mid-term exam, if you physically live in the Bay Area then please come in person to do the poster session. So this means you guys, you know, so if on campus students, and SCPD students are that, so they live in the Bay Area. If, for some reason, you live in the Bay Area, but aren’t able to come in in person to the poster session, please send us an e-mail as soon as possible at the usual class mailing address cs229qa@cscenter.edu; it’s the one on the course website; let us know. And if you’re an SCPD or SITS student and if you live physically outside the Bay Area then you’re exempt from the poster session, I guess. The poster session itself will be held at 8:30 a.m. on this – so the registrar assigns classes a certain time slot for final exams, so this class doesn’t have a written final. We use that time slot instead for the final poster presentations. So they’re about, I don’t know, I think there are, like, about 70 posters in this class. So in order for me to be able to see everything in a reasonable amount of time please prepare, like, about a two-minute presentation, so that as I go around the posters next Wednesday you can just briefly tell me about your work. And that’s the short, and then as I promise every year, I personally read every single word of every single final project write-up, so don’t worry about telling me everything, every little detail, of what you did because when you send me your final project write-up – so I promise I read every single word of every write-up, so I get all the details from there. But to go in the process presentation is actually first and foremost for you guys also to have a look at what other cool things people in the class are doing and based on the models, I’ve been flipping through the models, of all the very cool projects this year. So at the poster presentation too hopefully you can see what your colleagues, your classmates, have been doing and have fun doing that and also for me to just get a very brief sense of the things you’ve been doing. Okay?

The posters themselves, we will supply poster boards if you want them. You’re welcome to buy your own poster boards, but in a few days I’ll send instructions on where you can pick up a poster board. If you do get a poster board from us we do reuse them. We do recycle them from year to year, so if you do get one from us that I ask you to return it at the end of the poster session next Wednesday. So poster boards are, I don’t know, maybe about this wide and about this tall, so you can print out several pieces of paper. Print out several slides and attach them to the poster board. And we’ll provide easels, as well, for the poster presentation. Okay? So next Wednesday, come a little bit before 8:30 a.m. and we’ll meet on the first floor of the Gates lobby. So around the first floor of the Gates lobby around Gates 104 and we’ll set up poster there. Okay? Are there questions about the poster session? No? Okay, cool. Let’s see.

Questions & Answers

what does the ideal gas law states
Joy Reply
Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
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Source:  OpenStax, Machine learning. OpenStax CNX. Oct 14, 2013 Download for free at http://cnx.org/content/col11500/1.4
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