Update app.py

app.py

@@ -23,7 +23,7 @@ def huff_model_probability(df_distances, df_attractiveness, alpha, beta, df_popu
 
     adjusted_population = df_population.repeat(df_distances.shape[1]).values.reshape(df_distances.shape) * adjustment_factors
     attractiveness_term = df_attractiveness ** alpha
-    distance_term = df_distances ** -beta
+    distance_term =np.exp(df_distances * -beta)
 
     numerator = (attractiveness_term * distance_term).multiply(adjusted_population, axis=0)
     denominator = numerator.sum(axis=1)