And then did you learn to use isolines?

你学会使用等值线了吗？

One thing that you will notice is that none of these isolines ever cross.

你会注意到的一点是，这些等值线永远不会相交。

If you ever move along a isoline, again it is going to be equal levels of potential.

如果你沿着等值线移，那么你将会处于相同电势的水平。

And so we could draw in isolines.

我们可以画出等值线。

The two axes on this contour plots are b, on the vertical axis, and w on the horizontal axis.

此等值线图的两个轴分别是 b （在垂直轴） 和 w （在水平轴）。

And so did you learn to represent these contour lines as isolines?

那你学会用等值线来表示这些等高线了吗？

And so in the sciences what we do is we draw isolines, lines of equal scalar value.

而在科学中，我们绘制等值线，即标量值相等的线。

But if I were to connect a lot of these with what are called isolines, where we are seeing they are the same value then you start to see an image here.

但如果我把这些用所谓的等值线连接起来，你会发现它们具有相同的数值， 你就会开始看到一个图像。

And you'll also see a contour plot, seeing how the cost gets closer to the global minimum as gradient descent finds better and better values for the parameters w and b. So remember that to do the optional lab.

您还将看到一个等值线图，可以看到随着梯度下降为参数 w 和 b 找到越来越好的值，成本如何越来越接近全局最小值。因此，请记住，要进行可选实验。