Hackerman Hall B17 @ 3400 N Charles St, Baltimore, MD 21218, USA
The big data boom in recent years covers a wide spectrum of heterogeneous data types, from text to image, video, speech, and multimedia. Most of the valuable information in such ?big data? is encoded in natural language, which makes it accessible to some people ? for example, those who can read that particular language ? but much less amenable to computer processing beyond a simple keyword search. Information Extraction (IE) on a massive scale aims to extract structured facts from a wide spectrum of heterogeneous unstructured data types. Traditional IE techniques are limited to a certain source X (X = a particular language, domain, limited number of pre-defined fact types, single data modality, ?). When moving from X to a new source Y, we need to start from scratch againby annotating a substantial amount of training data and developing Y-specific extraction capabilities. In this talk, I will present a new Universal IE paradigm based on share-and-tranfer, to combine the merits of traditional IE (high quality and fine granularity) and Open IE (high scalability). This framework is able to discover schemas and extract facts from any input data in any domain, without any annotated training data, by integrating distributional semantics and symbolic semantics. It can also be extended to hundreds of languages, thousands of fact types and multiple datamodalities by constructing a multi-lingual multi-media multi-task common semantic space and then performing zero-shot transfer learning across sources.
Heng Ji is the Edward P. Hamilton Chair Professor in Computer Science at Rensselaer Polytechnic Institute. She received her Ph.D. in Computer Science from New York University. Her research interests focuson Natural Language Processing, especially on Information Extraction andKnowledge Base Population. She was selected as ?Young Scientist? and a member of the Global Future Council on the Future of Computing by the World Economic Forum in 2016, 2017 and 2018. She received ?AI’s 10 to Watch? Award by IEEE Intelligent Systems in 2013, NSF CAREER award in 2009, Google Research Awards in 2009 and 2014, IBM Watson Faculty Award in 2012 and2014, Bosch Research Awards in 2015, 2016 and 2017, and Tencent AI LabRhino-Bird award in 2019. She coordinated the NIST TAC Knowledge Base Population task since 2010, and served as the Program Committee Co-Chair ofseveral conferences including NAACL-HLT2018.