[source] # Manhattan A distance metric that constrains movement to horizontal and vertical, similar to navigating the city blocks of Manhattan. An example of a board game that uses this type of movement is Checkers. $$ Manhattan(\mathbf {a} ,\mathbf {b})=\|\mathbf {a} -\mathbf {b} \|_{1}=\sum _{i=1}^{n}|a_{i}-b_{i}| $$ **Data Type Compatibility:** Continuous ## Parameters This kernel does not have any parameters. ## Example ```php use Rubix\ML\Kernels\Distance\Manhattan; $kernel = new Manhattan(); ```