My name is Doug Lloyd.

My name is David Malin and this is indeed the 10 CS 50 fair.

And boy, has it come so far.

Back in the very first day of 50 Fair, it was pretty much with me holding a balloon, hoping that people would come by was one.

But now we have hundreds of CS 50 students, hundreds of students and faculty and staff across campus and even hundreds of CS.

With AP students who were taking CS 50 at their own.

That's a great crowd are ready to start.

We just got started about 1/2 an hour ago is our second annual live show of the CS 50 pairs.

This is also a lot of fun and exciting indeed.

Doug is looking forward to going strong for the next several hours.

So many hours, so many hours of CS 50 fair.

And what are we gonna see throughout the day?

We're gonna see student projects.

We're gonna do interviews from the floor from the interview station.

There's a whole lot of things that are gonna happen today.

We'll see lots of changes as Well, we've changed the way the look of affairs you mentioned things changed quite a bit in the last 10 years or more balloons this year.

Instead, above our heads, we have hundreds, maybe thousands, of L E D lights, all of which are software controlled.

So that Colton and the team on lighting can actually synchronize the lights with the song that is playing always, always innovating Here is 50.

Shall we take a look at the way should get right to the action.

So I'm gonna talk things over to the interview station where are not have a student who's gonna be talking about a stock analyzing.

Let's get started.

Hello.

Welcome to CS 50.

I'm are not a teaching fellow for the scores.

And today I have with me, my two lovely friends Paul and Andrew here to talk more about that project.

Plastic.

Hey, Andrew.

Hey, Paul.

Do you guys wanna introduce yourselves?

Tell us more about your project.

Hi.

I'm Andrew Soldini.

I'm a junior economic concentrated statistics concentrator in the house.

I'm Paul.

I'm in junior high.

Let me study statistics.

You want to do one?

Tell us more about blasting.

You know what made you guys stop with the project.

Yeah, for sure.

So our project is stock sentiment analyzer.

So what we do is we allow the user to choose a portfolio of stocks to analyze it in our program allows the user to gather data on the sentiment as well as a stock price and see trends between them.

So over here is last in.

And if we go on sentiment record, So my portfolio Curly consists of Apple, Tesla and Alibaba.

So I'm just gonna look at Apple.

Then we can analyse apple, and what I do is show us a graph off the sentiment score.

So a ground of sentiment and the stock price so yellow is the sentiment on a scale from minus 1211 Being positive and red is a stock price.

So we can kind of see trends over time.

Yeah, and they're really easy to compare in this because the grafts have dual axes that make it really see also shows remarkable trends that overtime really poorly.

Things correlate pretty well now, and more data collects sensitivity for the markets close so that you also have the last couple days tracked.

You could do this for any stock once we put it in our database.

Yeah, so?

So it updates every 90 seconds every 90 seconds gathers data.

And one of the cool things is that in our database, if you select the stock that's not yet in our database will automatically at the database and start from that date on gather data on the sentiment and stock price.

So, what a p I did.

You guys used to get this gentleman did.

And then the stock prices over time s o for the sentiment way.

Use tweets.

So we gather tweets from an A P I called stock to it, gathers the 30 latest relevant tweets on a stock and then use natural language processor to analyze the sentiment.

Each street and the average sentiment score is seven score of stock in that time.

Yeah, vaccinating.

So I mean, this project is amazing.

I just have one question about the name.

Name sounds kind of particular to meet.

So how'd you guys come up with the name?

I mean, the name is quite literally our initials.

Paul obviously comes first, but then way have 1/3 partner who happens to be abs like missing at this moment off enjoying the fair eso just hearin it shows.

Thank you so much, guys, for talking to us more about your project.

And I wish you guys the best of luck.

Thank you.

Thanks.

All right, so that was a really cool project.

And, uh, you kind of remind me a little bit of he said, six.

He's had seven from this year for anybody who followed along.

But before we get too far away, there's somebody sitting next to me.

Oh, my calling Karen.

Everyone.

So we're here.

The fair look so much different than last year, but I'm loving it already.

Got to see a few projects, and it's pretty great.

Erin's gonna be with us on and off for the next couple hours.

And Aaron is a very funny person.

Aaron, it's fairly nice with, Well, thank you very much.

I didn't have another one plan, but I got more to come because you'll have.

You'll have more to come.

I'm sure on that.

I think we're about to go back out into the field in just a moment.

But any other thoughts on the subject change in scenery this year before we head over.

I mean, I think that the students are definitely enjoying this new vibe.

I think it's ah, really interesting atmosphere to be here.

Live and help you guys get to get a little taste of that today.

All right, so you kind of take a look at that stock analyzer project was really cool.

Kind of tied together a couple of pieces of new things.

Always fun to see students sort of taking things you learn in the class and turning it up a notch and really innovating and doing something.

So I believe now we're gonna head out into the field and take a look at another student project right in.

All right, So we're here with Hillary and Anna, and they're gonna share their project with us.

So what is your projects?

Title.

What does it do and give us a little bit of an elevator pitch tweets, and basically, you can search any trending topic.

I'm right now and it'll give you it will listen for tweet that they're happening right now and then give you the time.

Most recent results on DNA, no show markers on the map, and you can kind of click on each one and sort of see the user, the tweet and what time?

That was awesome.

That's really cool.

And I Would you like to give us a live demo of how your project works?

All right, So originally we've been searching Trump.

What's a little controversial about this little search Friday that is much less trying controversial in Trump?

I will give you that and hope for people are speaking about Friday Right now.

That would be really awesome.

I like the little spinny thing.

You're gonna That's awesome, right?

So let's pull up this tweet from Massachusetts.

I was just a bunch of great, very nice.

Everyone's excited about looks like groups and Friday, Friday's awesome in general, that is a good point.

Awesome.

Frankel.

Thank you guys very much for sharing collapse way, our way, our live out in the field.

So there's a lot of people, a lot of wires, So apologies for any any visual difficulties you have metastatic just gonna happen.

We have this many people packed in the one spot of one.

I saw that that was working with pretty cool.

We introduced into that a little bit of swelling in some tweets and showing it on that same interface that we used for Nasher.

Exactly.

So we have problems that has a map based element to it from set eight students pulling in base portion out of that as well.

Make some more connections on the map.

It's right.

It's nice to see those visual project really tie, I think.

All right, so I think we're headed over to see a project called Angry over the invitations.

All right.

Thanks, Doug.

We're here with Korea and Kevin to show us your product.

So what?

What did you guys make today?

Have you been so hungry that you got angry?

You know, I could say I'm a little bit right night, like to actually for this app is built to deal with your gangrenous.

So basically, if you're on campus, he wanted just know where there's free food.

And at Harvard, this always There's always some organization offering cupcakes.

Believe Bay's nose.

Whatever.

It's really good way.

Want to compile a way to see a ll that visually, on a map and see where it is relative to?

You actually don't want to walk all the way across campus.

It's got some free food.

You're hungry now and you need this as by that hangar.

Estimates Boston.

So basically, um, yeah.

You wanna give us Ah, walk.

Yeah, and cold outside.

So I don't wanna walk for my free food.

Exactly.

And sometimes the dining hall just doesn't cut it.

What this does is geo coder, a p I to determine where we are related the map.

I feel a little bit of marginal air on that, but we're working on it, and and then it's able to map event, uh, that are near you with free foods, for example.

Sanders theater, I have to say, and this great or really?

Yeah, there's a lot of friends here.

Look, right.

With less labs, you might not have known, but there's popcorn at this event.

So you're able to mark what's going on around you Just go with a really important question for you guys who came up with the name thing.

And what time was that?

During the hackathon was three Emporium That was like the way you thought of the name first would develop.

But you're the best selling.

Well, awesome.

So what?

What is your favorite part of CS 50 so far.

Would you say the project are I feel like, for me, it's been a really exciting course because one of the best part of CS is when you get to collaborate with other people in that community, building is just huge.

It's definitely so called Make something.

It was, like, very stressful.

Get something together.

I think like now that you're here that you present, it's like the process was on and it was There's a lot of work, but I think he's worth and it's like, Where else are you gonna be able to have this kind of event with big inflatable rubber dogs and little implant on like companies here and people in popcorn?

So that's really exciting, I think, but that we want to plug that page.

Oh, please do.

Wow, Steve Jobs endorse a project.

So all right, so I think I know his favorite feature of your product.

What would you say is yours?

This is great.

There's a lot of hidden Easter eggs on this project, So, like, let's say you're about just the metaphor.

Maybe there's a networking about what Goldman.

Oh, look at that.

So you wanna find your champagne and caviar.

So good, huh?

Yeah, that's fun.

Cool.

And so what was the hardest part?

Would you say of this product that you're lying along?

These angry people walking around?

Let's have this project.

What do you find most difficult?

Was it kind of like doing your own thing?

Would you say it was a particular feature?

I think the hardest part is in this class we've gotten to know the basics of every little thing.

But it was hard to pull that together like every we knew it was possible.

We knew what we could do and which had to consistently, like, get it done and be able to figure it out and make sure everything's working because, like sometimes way don't know where the problem lies.

It could be in the HTML, could be in our sourcing.

Could be from the flash.

Could be in the C S C i.

D.

It's It was so hard said, Continue Thio little Taylor.

Another like problem solving with just that we like got to look up different times for user's online and just trying to integrate them with the clue was also really cool.

So you guys ready to get some food now.

So you have been angry for a while.

All right?

Thank you.

Think America, You know that they said something a little bit.

That was just so great.

Like talking about, like, how C s would be the final product.