Tackling Hallucinations in Neural Chart Summarization
Saad Obaid ul Islam,
Iza Škrjanec,
Ondrej Dusek
et al.
Abstract:Hallucinations in text generation occur when the system produces text that is not grounded in the input. In this work, we tackle the problem of hallucinations in neural chart summarization. Our analysis shows that the target side of chart summarization training datasets often contains additional information, leading to hallucinations. We propose a natural language inference (NLI) based method to preprocess the training data and show through human evaluation that our method significantly reduces hallucinations.… Show more
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