In August, Professor Alexander Gelbukh began a 12 month sabbatical at RGCL. As part of his visit, Prof. Gelbukh presented a research seminar to the group on ‘Opinion Mining and Sentiment Analysis’. During his time here, he has held many meetings with members of the group to discuss both future opportunities for collaboration, and discuss his research with interested people.
Last week, Antonio Pascucci a visiting Ph.D. Industrial Student in Computational Linguistics for Authorship and Gender Attribution in Italian social media texts from Universiy Of Naples – L’Orientale, gave a Researcher Seminar to the group.
Title: ‘Computational Stylometry for Authorship Attribution in social media texts’
Computational Stylometry (CS) is the study of stylistic features (linguistic choices). Writing style is a combination of decisions in language production. Thanks to a statistic analysis of these decisions, we can know author identity and many more characteristics about him/her. Writing style, in fact, is unique to an individual, and that’s why we talk about authorial DNA.
CS for the authorship attribution is the topic of my research project, and the aim is using CS for authorship attribution in social media texts. During the seminar, research project and my first steps in gender attribution will be shown, in addition to Cyberbullying detection researches, conducted thanks to a software made available by Expert System Corp.
Every year, the University of Wolverhampton awards 10 research fellowships to support projects led by researchers who obtained their PhD in the last 5 years. The initiative is called ERAS – Early Research Award Scheme (ERAS)  and provides a budget of up to 5,000 pounds to each project. The program has existed since 2016 and applications are selective on a competitive basis.
Marcos Zampieri, a member of RGCL and RIILP, was selected to be part of the 2018-2019 cohort of ERAS fellows with a project entitled “Identifying and Categorizing Offensive Language in Social Media”. The project deals with the application of computational methods to identify offensive and aggressive language and hate speech in social media. The funding will support the annotation of a large offensive language dataset that will be used in a SemEval 2019 task .
For more information, please check Marcos’ recent publications on the topic [3,4,5].
Pablo Calleja, from the Ontology Engineering Group at the Universidad Politécnica de Madrid, Spain, is currently completing an Internship with RGCL as part of his PhD. Yesterday, Pablo gave a talk to the group about his research.
Title: Role-based Named Entity Recognition over unstructured texts
Named Entity Recognition (NER) poses new challenges in real-world documents in which there are entities with different roles according to their purpose or meaning. Retrieving all the possible entities in scenarios in which only a subset of them based on their role is needed, produces noise on the overall precision.
The talk will present a Role-based NER task that relies on role classification hierarchy models that support recognizing entities with a specific role. The proposed task has been implemented in two use cases: one in the biomedical domain using Spanish drug Summary of Product Characteristics and the other in the legal domain using multilingual and heterogeneous mails of the Panama Papers investigation.
Last week, we were visited by Dr Chun Chang and Zhao Jie from the Institute of Scientific and Technical Information of China. Dr Chang and Zhao Jie spent the day in meetings with members of RGCL discussing future collaborations but in between meetings, Dr Chang found the time to give a talk to the group. The details can be found below-
Title: The Construction and Application of Chinese Thesaurus in China
Dr. Chun Chang, Professor, The Institute of Scientific and Technical Information of China. Dr. Chang has long been engaged in the construction and application of the knowledge organization system.
Focusing on the construction and application of the Chinese Thesaurus, the lecture will discuss three main aspects below: The definition of a thesaurus and basic information of constructing thesauri in China; The history and current situation of constructing Chinese Thesaurus and the application of Computational Linguistics in the compilation process; and the current and prospective application of Chinese Thesaurus in retrieving information.