Name: BINARY CLASSIFIER WITH TENSORFLOW - CS50 on Twitch、EP.7 (BINARY CLASSIFIER WITH TENSORFLOW - CS50 on Twitch, EP. 7)
Uploaded: 2021-01-14T10:20:17.000Z
Duration: 2 h 18 min 46 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

This is CS50 on Twitch, and today we're joined

by CS50's Nick Wong, who's been a teaching fellow here

And today he's going to teach-- oh, what are you going to teach us today?

NICK WONG: So we're going to be talking about binary classifiers

And so TensorFlow was actually a project that was developed and built by Google.

And Google has their hands in everything,

but TensorFlow is really cool because it basically took

the whole linear algebra-ness of machine learning and made it very simple.

And then Keras is a wrapper on top of TensorFlow

that actually made even that simplification a little bit simpler.

COLTON OGDEN: Let's transition to your awesome little screensaver back here.

Yeah, so like an introduction to machine learning using some nice open source

libraries, some Google base-- is Keras a Google open source library as well?

TensorFlow-- I know everyone's heard of TensorFlow, or at least a lot of us

I know almost nothing about machine learning,

so this will be a learning experience for me as well,

but I'm super excited to talk about binary classifiers and what they are.

So yeah, I'll talk a little bit about the theory first.

I like the theory, I think it's really cool,

but we're going to just talk about it a little bit

to motivate and contextualize what I'm actually going to start

Before I do that, I just wanted to point out this screen saver

That's the actual program that's running.

But I put that through another program called

lolcat, which is one of my favorite "messing with people"

If you're ever trying to mess with someone,

you can display lolcat and stuff through a screen.

COLTON OGDEN: We'll have a separate stream on how to troll people,

COLTON OGDEN: And this screensaver is in a shell, right?

If I press any key, then I'm back in my shell,

and I can go back to coding and doing all sorts of cool things.

It just drains power, so you want to be plugged in.

COLTON OGDEN: We have a few comments in the chat there.

WHIPSTREAK, BELLA, and I can't read that last one.

COLTON OGDEN: We have a lively chat, so we'll definitely read off the messages

It's one of my favorite buzzwords that everyone throws around,

There are some really good ones out there.

They've been massively-- yeah, those last couple years.

NICK WONG: Everyone keeps throwing them out there, and they're all great.

And so I think one of the things that I heard this last summer where

I was working, someone said that machine learning is just fancy statistics

Like in concept, yes, but not necessarily in what

What they were meaning is, like, you could just

And when I was walking through our science center today,

I was looking at the old punch card style computers.

And I was like, yeah, technically I can run statistics on that too,

The game has changed a little bit given our computing power, our memory,

COLTON OGDEN: Little bit apples and oranges type deal.

It's just like, yeah, you're not wrong really, but you're pretty off.

And so machine learning is just a very broad field.

It really means just any way in which you

And a lot of it's modeled after how humans learn.

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BINARY CLASSIFIER WITH TENSORFLOW - CS50 on Twitch、EP.7 (BINARY CLASSIFIER WITH TENSORFLOW - CS50 on Twitch, EP. 7)

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