Computational Approaches to the Understanding of Political Debates

作者:sds-admin 发布时间:2017-08-10

Title: Computational Approaches to the Understanding of Political Debates
Speaker: Prof. Yulan He, Aston University, UK
Organizer: Prof. Zhongyu Wei, School of Data Science at Fudan University
Time: 3:00pm-4:00pm, 2017-8-15 (Tuesday)
Location: RM N205, Zibin Building, Fudan University
Abstract: This talk consists of two parts. In the first part, I will present our study of using semantic frames for modeling persuasive argumentation in speakers’ discourse. We investigate the impact of a speaker’s argumentation style and their effect in influencing an audience in supporting their candidature in political debates. In the second part of my talk, I will present our work in exploring how to detect people’s perspectives that occupy a certain proposition. We propose a Bayesian modeling approach where topics (or propositions) and their associated perspectives (or viewpoints) are modeled as latent variables. Words associated with topics or perspectives follow different generative routes. The model is evaluated on debates from the House of Commons of the UK Parliament, revealing perspectives from the debates without the use of labelled data and obtaining better results than previous related solutions under a variety of evaluations.
Bio: Yulan He is a Reader and Director of the Systems Analytics Research Institute at Aston University, UK. She obtained her PhD degree in Spoken Language Understanding in 2004 from the University of Cambridge, UK. Her current research interests lie in the integration of machine learning and natural language processing for text mining and social media analysis. Yulan has published over 140 papers on topics including sentiment analysis, social media content modeling, online community analysis and recommendation systems, with most appeared in high impact journals and at top conferences such as IEEE Transactions on Knowledge and Data Engineering, KDD, CIKM, ACL, EMNLP, etc. She has held 14 research grants funded by UK research councils, EU, Innovate UK and Royal Academy of Engineering. She served as an Area Chair in NAACL 2016, EMNLP 2015, CCL 2015 and NLPCC 2015 and co-organized ECIR 2010 and IAPR 2007. She is a member of the Peer Review College at the Engineering and Physical Science Research Council (EPSRC), UK, and has served as a reviewer for the Economics and Social Science Research Council (ESRC), Royal Society of the UK and Czech Science Foundation.