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Register a new userFine-Grained Fairness Analysis of Abusive Language Detection Systems with CheckList
تحليل النزاهة الرخوة من أنظمة الكشف عن اللغة المسيئة مع قائمة مرجعية
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أظهرت أنظمة الكشف عن اللغة المسيئة الحالية التحيز غير المقصود تجاه ميزات حساسة مثل الجنسية أو الجنس. هذه قضية حاسمة، والتي قد تؤذي الأقليات والجماعات الممثلة تمثيلا ناقصا إذا تم دمج هذه الأنظمة في تطبيقات العالم الحقيقي. في هذه الورقة، نقوم بإنشاء اختبارات مخصصة من خلال أداة قائمة المراجعة (Ribeiro et al.، 2020) للكشف عن التحيزات داخل مصنفات اللغة المسيئة للغة الإنجليزية. نقارن سلوك نماذج استنادتين في بيرت، واحد مدرب على مجموعة بيانات الكلام الكراهية العامة والآخر في مجموعة بيانات للكشف عن الحرج. يوضح تقييمنا أنه على الرغم من أن المصنفات القائمة على بيرت تحقق مستويات عالية الدقة على مجموعة متنوعة من مهام معالجة اللغة الطبيعية، فإنها تؤدي بشكل سيء للغاية فيما يتعلق بالإنصاف والتحيز، لا سيما بشأن العينات التي تنطوي على الصور النمطية الضمنية، وتعبيرات عن الكراهية نحو الأقليات والسمات المحمية كما العرق أو الميل الجنسي. نطلق سراح كل من أجهزة الكمبيوتر المحمولة المنفذة لتوسيع اختبارات الإنصاف ومجموعات البيانات الاصطناعية التي يمكن استخدامها لتقييم تنظيم الأنظمة بشكل مستقل عن قائمة المراجعة.
Current abusive language detection systems have demonstrated unintended bias towards sensitive features such as nationality or gender. This is a crucial issue, which may harm minorities and underrepresented groups if such systems were integrated in real-world applications. In this paper, we create ad hoc tests through the CheckList tool (Ribeiro et al., 2020) to detect biases within abusive language classifiers for English. We compare the behaviour of two BERT-based models, one trained on a generic hate speech dataset and the other on a dataset for misogyny detection. Our evaluation shows that, although BERT-based classifiers achieve high accuracy levels on a variety of natural language processing tasks, they perform very poorly as regards fairness and bias, in particular on samples involving implicit stereotypes, expressions of hate towards minorities and protected attributes such as race or sexual orientation. We release both the notebooks implemented to extend the Fairness tests and the synthetic datasets usable to evaluate systems bias independently of CheckList.
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