Update preprocess.py

Signed-off-by: wmb <wmb@teknik.io>

preprocess.py

@@ -35,8 +35,6 @@ def parse_data(attributes: list, line: str) -> list[float]:
 
         if attr["value-types"] == "numeric":
             # Numeric field. Just copy it as is, we'll do the normalization later.
-            # Although keeping track of the min and max values for each field now
-            # would be more efficient.
             parsed_data.append(float(field))
 
         elif attr["value-types"] == "enum":
@@ -56,12 +54,8 @@ def update_min_max(min_max: list[list[float]], parsed_line: list[float]) -> None
     for fieldnum, field in enumerate(parsed_line):
         oldmin = min_max[0][fieldnum]
         oldmax = min_max[1][fieldnum]
-        if oldmin is None or field < oldmin:
-            min_max[0][fieldnum] = field
-        if oldmax is None or field > oldmax:
-            min_max[1][fieldnum] = field
-        #min_max[0][fieldnum] = field if oldmin is None or field < oldmin else oldmin
-        #min_max[1][fieldnum] = field if oldmax is None or field > oldmax else oldmax
+        min_max[0][fieldnum] = field if oldmin is None or field < oldmin else oldmin
+        min_max[1][fieldnum] = field if oldmax is None or field > oldmax else oldmax
 
 def normalize(data: list[list[float]],
         min_max: list[list[float]],