added requirements.txt

app.py

@@ -3,8 +3,8 @@ import numpy as np
 import numpy.linalg as la
 import pickle
 import os
-#import gdown
-#from sentence_transformers import SentenceTransformer
+import gdown
+from sentence_transformers import SentenceTransformer
 import matplotlib.pyplot as plt
 import math
 
@@ -21,7 +21,7 @@ def cosine_similarity(x, y):
     ##################################
     ### TODO: Add code here ##########
     cos_sim = np.dot(x,y)/(np.linalg.norm(x)*np.linalg.norm(y))
-    exp_cos = 0 ######## find formula for exponentiated cosine similarity
+    exp_cos = np.exp(cos_sim) ######## find formula for exponentiated cosine similarity
 
     ##################################
     return exp_cos