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stbi/Lib/site-packages/Sastrawi/Morphology/InvalidAffixPairSpecification.py

+import re
+
+class InvalidAffixPairSpecification(object):
+    """Asian J. (2007) "Effective Techniques for Indonesian Text Retrieval". page 26
+    
+    @link http://researchbank.rmit.edu.au/eserv/rmit:6312/Asian.pdf
+    """
+    def is_satisfied_by(self, word):
+        if re.match(r'^me(.*)kan$', word):
+            return False
+
+        if word == 'ketahui':
+            return False
+
+        invalid_affixes = [r'^ber(.*)i$',
+            r'^di(.*)an$',
+            r'^ke(.*)i$',
+            r'^ke(.*)an$',
+            r'^me(.*)an$',
+            r'^me(.*)an$',
+            r'^ter(.*)an$',
+            r'^per(.*)an$']
+
+        contains = False
+        for invalidAffix in invalid_affixes:
+            contains = contains or re.match(invalidAffix, word)
+
+        return contains
+
+