Added Cosine Distance example code

Author: TannerGilbert

Loss_Functions/cosine_distance/code/cosine_distance.py

@@ -0,0 +1,10 @@
+import numpy as np
+
+
+class CosineDistance:
+
+ def __call__(self, y: np.ndarray, y_pred: np.ndarray) -> np.ndarray:
+ return self.loss(y, y_pred)
+
+ def loss(self, y: np.ndarray, y_pred: np.ndarray) -> np.float64:
+ return np.dot(y, y_pred) / (np.linalg.norm(y) * np.linalg.norm(y_pred))