Examples of using The cost function in English and their translations into Vietnamese
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So that's the cost function.
In this video we will define something called the cost function.
Now let's look at the cost function for logistic regression.
In our case, we are looking for the minimum of the cost function.
To minimize the cost function, you need to iterate through your data set many times.
How can we reduce the cost function?
And so, this corresponds to H over X, equals, you know, minus 900 minus 0.1 x is this line,so out here on the cost function.
How can we minimized the cost function?
Understand the cost function- the difference between the prediction and actual results based on what you're trying to do.”.
This function is called the Cost Function.
In contrast, the cost function, J, that's a function of the parameter, theta one, which controls the slope of the straight line.
It is often the case that the constraints are interchangeable with the cost function.
Now, when we have two parameters, it turns out the cost function also has a similar sort of bow shape.
The cost function is an important concept in learning, as it is a measure of how far away a particular solution is from an optimal solution to the problem to be solved.
In this video,lets delve deeper and get even better intuition about what the cost function is doing.
Also to keep the costs finite the cost function has to be taken to be J/ T{\displaystyle{\mathbf{}}J/T}.
You kinda of a get a sense, I hope,of this bowl shaped surface as that's what the cost function J looks like.
By computing the derivative(or gradient) of the cost function at a certain set of weight, we're able to see in which direction the minimum is.
And later in the class we will use gradient descent to minimize other functions as well,not just the cost function J, for linear regression.
I did herewas I just you know plugged in the definition of the cost function there, and simplifying little bit more, this turns out to be equal to, this.
I'm not actually going touse these sort of 3D surfaces to show you the cost function J, instead I'm going to use contour plots.
But, it turns out that the cost function for gradient of cost function for linear regression is always going to be a bow-shaped function like this.
Unlike before, unlike the last video, I'm going to keep both of my parameters, theta zero, and theta one,as we generate our visualizations for the cost function.
So, we need to figure out what is this partial derivative term,and plug in the definition of the cost function J, this turns out to be this"inaudible" equals sum 1 through M of this squared error cost function term, and all.
So, that's the gradient descent algorithm, and you can use it to minimize,to try to minimize any cost function J. Not the cost function J to be defined for.
We have previously defined the cost function J. In this video I want to tell you about an algorithm called gradient descent for minimizing the cost function J. It turns out gradient descent is a more general algorithm and is used not only in linear regression.
If you have seen advanced linear algebra before so some you may have taken a class with advanced linear algebra,you might know that there exists a solution for numerically solving for the minimum of the cost function.
The function is called cost function.