a method that derives information about the local structure of the manifold (i.e. implicitly its tangent directions) at x based mostly on the training examples “around” x. There is a large group of manifold ...

found by clicking the above link or by going to the URL http://www.math.hmc.edu/calculus/tutorials/tangent line/applet1.html. If you cannot open the applet then use a graphing program/calculator to plot the ...