LimeSoda: Dataset for Fake News Detection in Healthcare Domain

In this paper, we present our Thai fake news dataset in the healthcare domain, LIMESODA, with the construction guideline. Each document in the dataset is classified as fact, fake, or undefined. Moreover, we also provide token-level annotations for validating classifier decisions. Five high-level annotation tags
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are 1) misleading headline 2) imposter 3) fabrication 4) false connection and 5) misleading content. We curate and manually annotated 7,191 documents with these tags. We evaluate our dataset with two deep learning approaches; RNN and Transformer baselines and analyzed token-level contributions to understand model behaviors. For the RNN model, we use the attention weights as token-level contributions. For Transformer models, we use the integrated gradient method at the embedding layers. We finally compared these token-level contributions with human annotations. Although our baseline models yield promising performances, we found that tokens that support model decisions are quite different from human annotation.