Activation function, mostly used in neural networks.
0, & \text {if } x < 0, \\ 1, & \text{if } x \ge 0 \end{cases}\end{split}$$Activation function, mostly used in neural networks.
0, & \text {if } x < 0, \\ 1, & \text{if } x \ge 0 \end{cases}\end{split}$$