From 754cce36d3ad607052b67b7e248f9340dda8b0ec Mon Sep 17 00:00:00 2001
From: Pablo Zinemanas <pzinemanas@fing.edu.uy>
Date: Wed, 29 Jul 2020 15:59:06 +0200
Subject: [PATCH] Fix bug in Scaler.inverse_transform()

---
 dcase_models/data/scaler.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/dcase_models/data/scaler.py b/dcase_models/data/scaler.py
index b2c2249..588609d 100644
--- a/dcase_models/data/scaler.py
+++ b/dcase_models/data/scaler.py
@@ -189,9 +189,11 @@ def inverse_transform(self, X):
             of the input.
 
         """
-        if self.normalizer == 'minmax':
-            X = (self.scaler[1]-self.scaler[0]) * \
-                (X/2. + 0.5) + self.scaler[0]
-        if self.normalizer == 'standard':
+        # TODO: How the list self.normalizer should work here.
+        scaler_ix = 0
+        if self.normalizer[scaler_ix] == 'minmax':
+            X = (self.scaler[scaler_ix][1]-self.scaler[scaler_ix][0]) * \
+                (X/2. + 0.5) + self.scaler[scaler_ix][0]
+        if self.normalizer[scaler_ix][0] == 'standard':
             X = self.scaler.inverse_transform(X)
         return X