4 files changed, 6 insertions, 10 deletions
diff --git a/src/argaze.test/GazeFeatures.py b/src/argaze.test/GazeFeatures.py
index a6709cb..d609dd2 100644
--- a/src/argaze.test/GazeFeatures.py
+++ b/src/argaze.test/GazeFeatures.py
@@ -631,8 +631,8 @@ class TestAOIScanPathClass(unittest.TestCase):
         self.assertEqual(aoi_scan_path.get_letter_aoi('B'), 'Shu')
         self.assertEqual(aoi_scan_path.get_letter_aoi('C'), 'Foo')
 
-        # Check string representation
-        self.assertEqual(str(aoi_scan_path), 'ABCA')
+        # Check letter sequence representation
+        self.assertEqual(aoi_scan_path.letter_sequence, 'ABCA')
 
     def test_transition_matrix(self):
         """Test AOIScanPath transition matrix feature."""
diff --git a/src/argaze/GazeAnalysis/LempelZivComplexity.py b/src/argaze/GazeAnalysis/LempelZivComplexity.py
index c836235..82ef05f 100644
--- a/src/argaze/GazeAnalysis/LempelZivComplexity.py
+++ b/src/argaze/GazeAnalysis/LempelZivComplexity.py
@@ -33,7 +33,7 @@ class AOIScanPathAnalyzer(GazeFeatures.AOIScanPathAnalyzer):
 
         assert(len(aoi_scan_path) > 1)
 
-        self.__lempel_ziv_complexity = lempel_ziv_complexity(str(aoi_scan_path))
+        self.__lempel_ziv_complexity = lempel_ziv_complexity(aoi_scan_path.letter_sequence)
 
     @property
     def lempel_ziv_complexity(self) -> int:
diff --git a/src/argaze/GazeAnalysis/NGram.py b/src/argaze/GazeAnalysis/NGram.py
index 662060e..bee9767 100644
--- a/src/argaze/GazeAnalysis/NGram.py
+++ b/src/argaze/GazeAnalysis/NGram.py
@@ -40,7 +40,7 @@ class AOIScanPathAnalyzer(GazeFeatures.AOIScanPathAnalyzer):
 
         assert(len(aoi_scan_path) > 1)
 
-        sequence = str(aoi_scan_path)
+        sequence = aoi_scan_path.letter_sequence
 
         self.__ngrams_count = {}
 
diff --git a/src/argaze/GazeFeatures.py b/src/argaze/GazeFeatures.py
index 224e2d9..bb5f991 100644
--- a/src/argaze/GazeFeatures.py
+++ b/src/argaze/GazeFeatures.py
@@ -799,11 +799,6 @@ class AOIScanPath(list):
 
         self.expected_aois = expected_aois
         self.__duration = 0
-        
-    def __repr__(self):
-        """String representation."""
-
-        return str(super())
 
     @property
     def duration(self) -> float:
@@ -846,7 +841,8 @@ class AOIScanPath(list):
 
         return self.__letter_aoi[letter]
 
-    def __str__(self) -> str:
+    @property
+    def letter_sequence(self) -> str:
         """Convert aoi scan path into a string with unique letter per aoi step."""
 
         sequence = ''