1 files changed, 48 insertions, 0 deletions
diff --git a/code/sunlab/common/scaler/max_abs_scaler.py b/code/sunlab/common/scaler/max_abs_scaler.py
new file mode 100644
index 0000000..56ea589
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+++ b/code/sunlab/common/scaler/max_abs_scaler.py
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+from .adversarial_scaler import AdversarialScaler
+
+
+class MaxAbsScaler(AdversarialScaler):
+    """# MaxAbsScaler
+
+    Scale the data based on the maximum-absolute value in each column"""
+
+    def __init__(self, base_directory):
+        """# MaxAbsScaler initialization
+
+        - Initialize the base directory of the model where it will live
+        - Initialize the scaler model"""
+        super().__init__(base_directory)
+        from sklearn.preprocessing import MaxAbsScaler as MAS
+
+        self.scaler_base = MAS()
+        self.scaler = None
+
+    def init(self, data):
+        """# Scaler initialization
+
+        Initialize the scaler transformation with the data"""
+        self.scaler = self.scaler_base.fit(data)
+        return self
+
+    def load(self):
+        """# Scaler loading
+
+        Load the data scaler model from a file"""
+        from pickle import load
+
+        with open(f"{self.base_directory}/portable/maxabs_scaler.pkl", "rb") as fhandle:
+            self.scaler = load(fhandle)
+        return self
+
+    def save(self):
+        """# Scaler saving
+
+        Save the data scaler model"""
+        from pickle import dump
+
+        with open(f"{self.base_directory}/portable/maxabs_scaler.pkl", "wb") as fhandle:
+            dump(self.scaler, fhandle)
+
+    def __call__(self, *args, **kwargs):
+        """# Scale the given data"""
+        return self.scaler.transform(*args, **kwargs)