Kb at SemEval-2023 Task 3: On Multitask Hierarchical BERT Base Neural Network for Multi-label Persuasion Techniques Detection
Katarzyna Baraniak, M Sydow · 2023
This paper presents a solution for Semeval 2023 subtask3 of task3: persuasion techniques in paragraphs detection.The aim of this task is to identify all persuasion techniques in each paragraph of given news articles.We use hierarchical multitask neural networks combined with transformers.Span detection is an auxiliary task that helps in the main task: identify propaganda techniques.Our experiments show that if we change the index of BERT embedding from the first token of the whole input to the first token of the identified span it can improve the performance.Span and label detection can be performed using one network so we save data and, when data is limited, we can use more of it for training.