diff --git a/examples/example_image/main.py b/examples/example_image/main.py
index 1a65272..45aac50 100644
--- a/examples/example_image/main.py
+++ b/examples/example_image/main.py
@@ -44,8 +44,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_1", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_1", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -55,8 +55,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business", "Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_2", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_2", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -66,8 +66,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_3", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_3", "Type": "String"},
     },
 ]
 
@@ -79,8 +79,8 @@ user_senmantic = {
     },
     "Device": {"Values": ["GPU"], "Type": "Tag"},
     "Scenario": {"Values": ["Business"], "Type": "Tag"},
-    "Description": {"Values": "", "Type": "Description"},
-    "Name": {"Values": "", "Type": "Name"},
+    "Description": {"Values": "", "Type": "String"},
+    "Name": {"Values": "", "Type": "String"},
 }
 
 
diff --git a/examples/example_m5/main.py b/examples/example_m5/main.py
index b14f194..e3e4390 100644
--- a/examples/example_m5/main.py
+++ b/examples/example_m5/main.py
@@ -21,8 +21,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_1", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_1", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -32,8 +32,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business", "Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_2", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_2", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -43,8 +43,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_3", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_3", "Type": "String"},
     },
 ]
 
@@ -56,8 +56,8 @@ user_senmantic = {
     },
     "Device": {"Values": ["GPU"], "Type": "Tag"},
     "Scenario": {"Values": ["Business"], "Type": "Tag"},
-    "Description": {"Values": "", "Type": "Description"},
-    "Name": {"Values": "", "Type": "Name"},
+    "Description": {"Values": "", "Type": "String"},
+    "Name": {"Values": "", "Type": "String"},
 }
 
 
diff --git a/examples/example_market_db/example_db.py b/examples/example_market_db/example_db.py
index a7b0585..11eb4cc 100644
--- a/examples/example_market_db/example_db.py
+++ b/examples/example_market_db/example_db.py
@@ -17,24 +17,24 @@ semantic_specs = [
         "Task": {"Values": ["Classification"], "Type": "Class"},
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_1", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_1", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
         "Task": {"Values": ["Classification"], "Type": "Class"},
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business", "Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_2", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_2", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
         "Task": {"Values": ["Regression"], "Type": "Class"},
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_3", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_3", "Type": "String"},
     },
 ]
 
@@ -46,8 +46,8 @@ user_senmantic = {
     },
     "Device": {"Values": ["GPU"], "Type": "Tag"},
     "Scenario": {"Values": ["Business"], "Type": "Tag"},
-    "Description": {"Values": "", "Type": "Description"},
-    "Name": {"Values": "learnware", "Type": "Name"},
+    "Description": {"Values": "", "Type": "String"},
+    "Name": {"Values": "learnware", "Type": "String"},
 }
 
 
diff --git a/examples/example_pfs/main.py b/examples/example_pfs/main.py
index c306203..3d0fd3e 100644
--- a/examples/example_pfs/main.py
+++ b/examples/example_pfs/main.py
@@ -21,8 +21,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_1", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_1", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -32,8 +32,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business", "Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_2", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_2", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -43,8 +43,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_3", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_3", "Type": "String"},
     },
 ]
 
@@ -56,8 +56,8 @@ user_senmantic = {
     },
     "Device": {"Values": ["GPU"], "Type": "Tag"},
     "Scenario": {"Values": ["Business"], "Type": "Tag"},
-    "Description": {"Values": "", "Type": "Description"},
-    "Name": {"Values": "", "Type": "Name"},
+    "Description": {"Values": "", "Type": "String"},
+    "Name": {"Values": "", "Type": "String"},
 }
 
 
diff --git a/examples/workflow_by_code/main.py b/examples/workflow_by_code/main.py
index 842d9aa..2b72e27 100644
--- a/examples/workflow_by_code/main.py
+++ b/examples/workflow_by_code/main.py
@@ -24,8 +24,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_1", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_1", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -35,8 +35,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business", "Nature"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_2", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_2", "Type": "String"},
     },
     {
         "Data": {"Values": ["Tabular"], "Type": "Class"},
@@ -46,8 +46,8 @@ semantic_specs = [
         },
         "Device": {"Values": ["GPU"], "Type": "Tag"},
         "Scenario": {"Values": ["Business"], "Type": "Tag"},
-        "Description": {"Values": "", "Type": "Description"},
-        "Name": {"Values": "learnware_3", "Type": "Name"},
+        "Description": {"Values": "", "Type": "String"},
+        "Name": {"Values": "learnware_3", "Type": "String"},
     },
 ]
 
@@ -59,8 +59,8 @@ user_senmantic = {
     },
     "Device": {"Values": ["GPU"], "Type": "Tag"},
     "Scenario": {"Values": ["Business"], "Type": "Tag"},
-    "Description": {"Values": "", "Type": "Description"},
-    "Name": {"Values": "", "Type": "Name"},
+    "Description": {"Values": "", "Type": "String"},
+    "Name": {"Values": "", "Type": "String"},
 }
 
 
diff --git a/learnware/config.py b/learnware/config.py
index 4d2e0ea..5323994 100644
--- a/learnware/config.py
+++ b/learnware/config.py
@@ -107,11 +107,11 @@ semantic_config = {
     },
     "Description": {
         "Values": None,
-        "Type": "Description",
+        "Type": "String",
     },
     "Name": {
         "Values": None,
-        "Type": "Name",
+        "Type": "String",
     },
 }