Implemented KNN_purity callback

deepof/models.py

@@ -337,9 +337,9 @@ class SEQ_2_SEQ_GMVAE:
             "bidirectional_merge": "ave",
             "clipvalue": 1.0,
             "dense_activation": "relu",
-            "dense_layers_per_branch": 1,
-            "dropout_rate": 0.15,
-            "learning_rate": 1e-4,
+            "dense_layers_per_branch": 3,
+            "dropout_rate": 0.05,
+            "learning_rate": 1e-3,
             "units_conv": 64,
             "units_dense2": 32,
             "units_lstm": 128,