Speaker: Prof. Ee-Peng Lim, Singapore Management University - Báo cáo trực tiếp

Talk title: Document Content Analysis using Knowledge Graphs

Time: 15:00 - 16:30, December 21, 2023.

Seminar: Hybrid seminar (onsite at VIASM and online) [Registration here]

Abstract: To help readers understand textual content, entity recognition can be performed to identify interesting objects and linked to some knowledge base or knowledge graph. Nevertheless, how these objects are semantically connected, it is important to determine the contextual paths between these entity objects. In this talk, we present 3 approaches of finding these contextual paths, i.e., (a) retrieval approach, (b) generation approach, and (c) prompting approach. The retrieval approach ranks candidate paths based on their semantic relevance to the input content. The generation approach generates contextual paths based on a transformer-based architecture. The prompting approach uses large language models to obtain the contextual paths. In this research, we also construct a dataset for both training and evaluation purposes. The experiments to evaluate the performance of our proposed methods based on retrieval, generation and prompting approach will also be covered.

Bio: Dr. Ee-Peng Lim is a Professor of Computer Science with the School of Computing and Information Systems at the Singapore Management University. He was also the Founding Director of Living Analytics Research Centre in the School, a research centre focusing developing personalized and participatory analytics capabilities for smart city and smart nation relevant applications. Dr Lim received his PhD degree from University of Minnesota. His research expertise covers social media mining, social/urban data analytics, and information retrieval. He is the recipient of the Distinguished Contribution Award at the 2019 Pacific Asia Conference on Knowledge Discovery and Data Mining (PAKDD), and the Test of Time award at 2020 ACM Conference on Web Search and Data Mining (WSDM).  He has published more than 400 papers at international conferences and journals.