Update README.md

README.md

@@ -14,7 +14,7 @@ Our research utilizes a comprehensive database of Polish political texts from so
 - YouTube: 42,252 comments
 - Facebook: 414,595 posts
 
-The texts were processed to fit transformer models' length constraints. Facebook texts were split into sentences, and all texts longer than 280 characters were removed. Non-Polish texts were filtered out using the `langdetect` software, and all online links and usernames were replaced with placeholders. We focused on texts with higher emotional content for training, resulting in a final dataset of 10,000 texts, annotated by 20 expert annotators.
+The texts were processed to fit transformer models' length constraints. Facebook texts were split into sentences, and all texts longer than 280 characters were removed. Non-Polish texts were filtered out using the `langdetect` software, and all online links and usernames were replaced with placeholders. We focused on texts with higher emotional content for training, which we have filtered using a lexicon approach, resulting in a final dataset of 10,000 texts, annotated by 20 expert annotators.
 
 ### Annotation Process