Thứ Ba, 1 tháng 5, 2018

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📝 Unknown Brain - Why Do I?

(feat.

Bri Tolani) Lyrics

Messing with my head again You had your heart set on me

But these feelings they come and go And they come so easily

Tell me what it is About you that I can't forget

But you're breaking down my walls again Just to set me free

Why do I, baby, why do I Love the way you only always leave me

Why do I, baby, why do I Love the touch but never love the feeling

Why do I, baby, why do I Love the way you only always leave me

Why do I, baby, why do I Love the touch but never love the feeling

Staying up when I go out You gotta know I'm all yours

But when I say what's that about You start slurring your words

Tell me why you have to seem so Distant when I'm holding you

Your fingertips are drifting away And I f*cking love how it hurts

Why do I, baby, why do I Love the way you only always leave me

Why do I, baby, why do I Love the touch but never love the feeling

Why do I, baby, why do I Love the way you only always leave me

Why do I, baby, why do I Love the touch but never love the feeling

Why do I, baby, why do I Why do I, baby, why do I

Why do I, baby, why do I Love the touch but never love the feeling

For more infomation >> Unknown Brain - Why Do I? (feat. Bri Tolani) (Lyrics Video) - Duration: 3:44.

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When should I solve a problem using dynamic programming? - Duration: 4:42.

What's up everyone? Sam here from www.byte-by-byte.com and today I'm going to

show you guys how to identify when to use dynamic programming in your coding

interviews.

Dynamic programming is something that scares a ton of people and I think that

a big part of why people get so scared is that they don't even know when to use

dynamic programming in the first place. So in this video I'm going to talk about

two different ways that you can identify when to use dynamic programming for a

problem. So the first way is maybe the obvious way is to see whether or not a

problem actually aligns with the definition of dynamic programming. And if

you're not sure about the definition of dynamic programming you really need to

check out my ebook, but to just briefly recap dynamic programming problems are

problems that have optimal substructure and overlapping subproblems. So what do

those mean? Optimal substructure means that you can break a problem down into

smaller and smaller chunks and then combine those together to get the

optimal solution. And if that sounds super familiar to you then that's

probably because it's basically recursion. So more or less what we're

saying is that if we can solve a problem recursively then it has optimal substructure.

The other component is overlapping subproblems and this is the part where dynamic programming really shines.

Overlapping subproblems just means that we're recomputing the same thing more

than once and dynamic programming works by caching those values so that we don't

actually have to recompute multiple times and we can just compute every

value once. So if we see that a problem has these two properties then we know

that we can use dynamic programming. And the best way to see if a problem has

both these properties is to actually draw a picture. And by drawing a picture,

I mean you're gonna draw a tree sort of like this one that you can see and you

are going to draw out all of the recursive functions. In this we can

actually see how there are multiple nodes in the tree that have the same

values which means that they're overlapping subproblems and we can see

because it's recursive that has optimal substructure and so we know that we can

use dynamic programming for this problem. Now this is kind of a

lot of work, right, because you have to go through the whole definition you have to

define the function and everything so what if there was an easier way for us

to identify when to use dynamic programming? Or at least give us a little

better sense? And luckily there are two heuristics that I've come up with that

make it a lot easier to decide whether to even consider going down this path or

not. The first heuristic is does the problem involve maximization,

minimization, optimization, or counting? And what I mean by this is let's

consider finding the shortest path through maze. That would be a

minimization problem. If we wanted to find the lowest number

of coins that it would take to make a given amount of change that's also a

minimization problem. If we wanted to find the longest path through a maze for

whatever reason that would be a maximization problem. Or if we just want

to find the best or worst or if we want to find the total number of

paths through a maze these are all examples of what I'm talking about

and if you see one of these things then there's a good chance that you might

want to use dynamic programming. And the corollary to this which is the other

heuristic is: If you can solve a problem by enumerating all the different possible

solutions and finding the best one then it's likely a good candidate for dynamic

programming. So let's go back to our maze example because it's just a really good

example for these sorts of problems. Let's say we wanted to find the shortest

path through maze. One thing that we could do is just find every possible

path through the maze and then pick the shortest one. It would be super easy to do

that and by having that heuristic, granted with mazes there are better ways

that we could do this we could use breadth-first search, but having those

heuristics makes it much easier for us to identify whether we even want to

consider using dynamic programming. So that's all I got for you guys today if

you like this video please subscribe below and don't forget to sign up for my

ebook at dynamicprogrammingbook.com if you haven't already and get that

ebook downloaded so that you can learn even more of this stuff about dynamic

programming and use it effectively in your interviews. And I

talk to you guys again soon.

For more infomation >> When should I solve a problem using dynamic programming? - Duration: 4:42.

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When a Facebook™ Ad stops working, how do I fix it? - Duration: 4:20.

- So if you just do those things,

you keep a close eye on it your campaigns will live forever

and Facebook will become a reliable, continuous source

of new patients.

(soft upbeat music)

Hi there, my name is John Nesbitt

with Million Dollar Practice Builders

here with our episode of the The Straight Answer.

So this is my kind of informal video for you

that you ask me any question and if I've had that question

like more than once I'm gonna answer it to you right here

on camera straight, the straight information

so that you can actually do something with it

and not just to make me seem like I'm some sort of expert

but actually give it to you in a way

that you can actually change the way you operate

and do better with your marketing, okay?

So today's question comes from, Doc asked me, okay

what do you do when your Facebook marketing campaign

stops working, this is really common.

A lot of guys will get their ads running,

they'll put their, they'll write a good couple ads

they'll put a landing page together,

everything so to get it running, targeted right,

and they'll actually get some results and then

after like a few days or maybe a week or two

or sometimes even a month or two, it'll just die.

And it won't come back.

Like they'll try running more, they'll run more budget

maybe even the ad stops even,

it doesn't even spend all the budget anymore right

like something happens with the campaign.

Alright well here's what you have to know

about Facebook marketing, first,

there's one whole way to setup marketing campaigns.

It's a whole technology of its own.

How do you set it up right?

You get the targeting right, you get the ads

put in the right spot you get a landing page created,

get all the stuff put together so you get the leads,

that sort to thing, right?

There's a whole different set of what you have to do

every day to keep it running.

So it's kind of like buying a car

is different than owning a car right.

When you first set up you do one thing

and then when you own it day by day, you do something else

you keep gaz in it you keep oil in it, that sort of thing,

right, so on a day by day basis, what you need to be doing

is looking at the numbers as the go up and down

and making adjustments and little refreshes.

Like you change headlines a little bit,

you change ad copy a little bit,

you change the images a little bit, right?

You wanna do this both for the landing page

and for the ads themselves, right?

You wanna constantly be doing a little bit

of observation of what's happening,

and then making these little tweaks all the time

even when it's running great,

especially when it's running great.

'cause what'll happen is, you'll get one ad

that's working you know really well,

and if you just do the wrong propeteal thing

to try to set it and forget it,

that ad will die, and the whole campaign will start to fade

and you won't have anything to test with anymore, right?

So if you are always kinda taking a couple ads

competing against each other just a little bit

on a daily basis, you'll always have a strong ad

up and coming and your campaign stays strong.

Now, that said there are times when it's gonna die anyway,

right you run the ads, you tweak like crazy

you've kept it going for maybe six months even, right?

Sometimes you make these things live a long time,

but it just starts to fade out and die.

With that one you have to do a basically

much larger kind of refresh of the campaign.

I recommend you actually change the offer.

What it means is, when the big campaign dies like that

when you have a big death and then the tweaks don't work,

it's because that audience has gotten tired of the offer

or all the people who are gonna respond to that offer

have responded easily, and now you're just sort of

down after the drags.

If you change the offer, like for example,

you honestly change the offer,

say you had an offer it was a $29 first consult special

and you get an x-ray and a this and a this and a this,

that's the $29 special, great.

Change it to a $35 new patient special,

give away something similar, highlight the fact

that they get the consultation and the massage comes with it

right so maybe they get the massage consult offer right?

Or for a vet for example you could say

well we had the pet grooming one,

let's go ahead and do the new puppy special, right?

Just go to a complete different market with it,

just change the offers to a different type of person.

That way you're kind of fishing in a whole new lake

while the old lake sort of regrows,

you don't wanna fish out the whole lake right,

'cause that's what that means when you actually got

a campaign that dies hard like that, okay.

So that's pretty much the cure for this,

every day by day you tweak it

and when those little tweaks stop working,

you change something big like the offer, alright?

So if you just do those things,

you keep a close eye on it, your campaigns will live forever

and Facebook will become a reliable, continuous source

of new patients, alright?

See you in the next video.

(soft upbeat music)

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