bug fix: data-typing

pipeline.py

@@ -234,7 +234,7 @@ class Components :
 			if name in x_cols :
 				if df[name].unique().size > 0 :
 					df[name] = self.approximate(df.iloc[i][name].fillna(0).values)
-			df[name] = df[name].astype(str)
+			# df[name] = df[name].astype(str)
 		# 	pass
 			
 		df.index = np.arange(df.shape[0])