diff --git a/learnware/market/heterogeneous/organizer/hetero_map/__init__.py b/learnware/market/heterogeneous/organizer/hetero_map/__init__.py
index 0453f97..37b5d3e 100644
--- a/learnware/market/heterogeneous/organizer/hetero_map/__init__.py
+++ b/learnware/market/heterogeneous/organizer/hetero_map/__init__.py
@@ -5,6 +5,7 @@ import pandas as pd
 import torch
 import torch.nn.functional as F
 from torch import Tensor, nn
+from loguru import logger
 
 from .....specification import HeteroMapTableSpecification, RKMETableSpecification
 from .feature_extractor import CLSToken, FeatureProcessor, FeatureTokenizer
@@ -73,7 +74,7 @@ class HeteroMap(nn.Module):
         activation : Union[str, Callable], optional
             Activation function for transformer layer, by default "relu"
         device : Union[str, torch.device], optional
-            Device to run the model on, by default "cuda:0"
+            Device to run the model on, by default "cpu"
         kwargs:
             Additional arguments to be passed to the feature tokenizer
         """
@@ -124,8 +125,26 @@ class HeteroMap(nn.Module):
         self.base_temperature = base_temperature
         self.num_partition = num_partition
         self.overlap_ratio = overlap_ratio
-        self.device = device
         self.to(device)
+    
+    def to(self, device: Union[str, torch.device]):
+        """Moves the model and all its submodules to the specified device
+
+        Parameters
+        ----------
+        device : Union[str, torch.device]
+            The target device to which the model and its components should be moved.
+
+        Returns
+        -------
+        HeteroMap
+            The instance of HeteroMap after moving to the specified device.
+        """
+        super(HeteroMap, self).to(device)
+        if hasattr(self, 'feature_processor'):
+            self.feature_processor.device = device
+        self.device = device
+        return self
 
     @staticmethod
     def load(checkpoint: str = None):