1.2 What is a Neural Network

01 Binary Classification 00:00 02 Logistic Regression 08:14 03 Logistic Regression Cost Function 14:13 04 Gradient Descent 22:24 05 Derivatives 33:48 06 More Derivative Examples 07 Computation Graph 08 Derivatives With Computation Graphs 09 Logistic Regression Gradient Descent 10 Gradient Descent on m Examples 11 Vectorization 12 More Vectorization Examples 13 Vectorizing Logistic Regression 14 Vectorizing Logistic Regression’s Gradient Computation 15 Broadcasting in Python 16 A Note on PythonNumpy Vectors 17 Quick Tour of JupyteriPython Notebooks 18 Explanation of Logistic Regression’s Cost Function