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A fundamental task in political text analysis is to predict whether a speaker takes on a positive or negative view about a debate topic. Unlike social media data, which has received extensive attention for political text mining, stance analysis on Hansard data remains understudied. The main distinctions between the two include longer text and context dependency related to a motion in the Hansard data. As a result, it is difficult to devise a text mining model for parliamentary debates based on existing studies of other applications. This raises the question of the generalisability of prominent methods for cross-domain classification under low-resourced data situations. To address this issue, we construct and compare various state-of-the-art natural language processing techniques and machine learning models for stance classification, using two benchmark datasets from the UK Hansard. To improve the model accuracy, a hybrid approach is designed, which leverages both text and numerical features in the classification process. The devised method achieves 15\u201320% improvement in accuracy compared to the baseline methods. Transfer learning of pre-trained language models is further investigated for political text representation and domain adaptation in a new stance classification task: Australian Hansard with debates focusing on the public health issue of obesity and related junk food marketing policies. Then, a feature augmentation technique is employed to optimise the learning model from the source domain for prediction on unseen test data in the target domain. This approach results in approximately 10% improvement in accuracy compared to those from the baseline methods. Finally, an error analysis is conducted to gain further insights into the devised model, which reveals the characteristics of commonly misclassified samples and suggestions for future work.<\/jats:p>","DOI":"10.1007\/s42001-025-00366-y","type":"journal-article","created":{"date-parts":[[2025,3,3]],"date-time":"2025-03-03T15:07:08Z","timestamp":1741014428000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Stance classification: a comparative study and use case on Australian parliamentary debates"],"prefix":"10.1007","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-1416-7614","authenticated-orcid":false,"given":"Stephanie","family":"Ng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samson","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asim","family":"Bhatti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kathryn","family":"Backholer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. 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While our devised approach could efficiently aid researchers to gain valuable insights in political text analysis, it is important to note potential biases inherent in both training data and model itself, which could lead to a bias evaluation of political discourse. One notable limitation of our approach is the unintended truncation of dialogues or utterances, which could result in potential loss of context and meaning of the original messages. We also acknowledge that these models could potentially influence public opinion and shape political narratives, which could result in unintended consequences such as the spread of misinformation when the results are misinterpreted. As such, it is necessary to conduct further research for addressing these ethical considerations and improving model transparency and interpretability.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}],"article-number":"43"}}