diff --git a/learnware/__init__.py b/learnware/__init__.py
index f2414b5..4813623 100644
--- a/learnware/__init__.py
+++ b/learnware/__init__.py
@@ -52,7 +52,9 @@ def init(**kwargs):
 
 
 if not is_torch_available(verbose=False):
-    logger.warning("The functionality of learnware is limited due to 'torch' is not installed!")
+    logger.warning(
+        "The ability of learnware is limited due to 'torch' is not installed! Only the core framework is available now."
+    )
 
 # default init package
 init()
diff --git a/learnware/specification/regular/table/__init__.py b/learnware/specification/regular/table/__init__.py
index 262e72c..443648a 100644
--- a/learnware/specification/regular/table/__init__.py
+++ b/learnware/specification/regular/table/__init__.py
@@ -6,6 +6,9 @@ logger = get_module_logger("regular_table_spec")
 if not is_torch_available(verbose=False):
     RKMETableSpecification = None
     RKMEStatSpecification = None
-    logger.warning("RKMETableSpecification is skipped because torch is not installed!")
+    rkme_solve_qp = None
+    logger.warning(
+        "RKMETableSpecification, RKMEStatSpecification and rkme_solve_qp are skipped because torch is not installed!"
+    )
 else:
     from .rkme import RKMETableSpecification, RKMEStatSpecification, rkme_solve_qp
diff --git a/learnware/specification/system/__init__.py b/learnware/specification/system/__init__.py
index a09ecca..82fbe3f 100644
--- a/learnware/specification/system/__init__.py
+++ b/learnware/specification/system/__init__.py
@@ -1 +1,11 @@
-from .hetero_table import HeteroMapTableSpecification
+from .base import SystemStatSpecification
+from ...utils import is_torch_available
+from ...logger import get_module_logger
+
+logger = get_module_logger("system_spec")
+
+if not is_torch_available(verbose=False):
+    HeteroMapTableSpecification = None
+    logger.warning("HeteroMapTableSpecification is skipped because torch is not installed!")
+else:
+    from .hetero_table import HeteroMapTableSpecification
diff --git a/setup.py b/setup.py
index a3f25b5..2145a04 100644
--- a/setup.py
+++ b/setup.py
@@ -107,8 +107,9 @@ if __name__ == "__main__":
                 "pre-commit",
             ],
             "full": [
-                "torch>=2.0.0",
-                "torchvision>=0.15.1",
+                # The default full requirements for learnware package
+                "torch==2.1.0",
+                "torchvision==0.16.0",
                 "torch-optimizer>=0.3.0",
                 "lightgbm>=3.3.0",
                 "sentence_transformers>=2.2.2",