FACTOR talk: Hettiarachchi - Temporal word dynamics for online event detection in social media streams

Thursday 5 December 2024, 3:00pm to 4:00pm

Venue

Bowland North Seminar Room 02, Lancaster, United Kingdom

Open to

All Lancaster University (non-partner) students, Alumni, Applicants, External Organisations, Families and young people, Postgraduates, Prospective International Students, Prospective Postgraduate Students, Prospective Undergraduate Students, Public, Staff, Undergraduates

Registration

Free to attend - registration required

Registration Info

Registration requires an email address. Lancaster University staff, students, guests and visitors are all welcome to attend.

Event Details

In the digital age, social media are key for sharing news, with most users relying on them for updates. Detecting events in this vast, unstructured data is labour-intensive, requiring automated methods. This talk explores how temporal word dynamics can improve event detection, addressing semantic gaps in current approaches.

In today's digital era, social media have become primary platforms for disseminating newsworthy content, with most internet users relying on them for regular updates. Thus, understanding and detecting important events from social media data streams is vital for various applications ranging from crisis management to market analysis. However, the vast volume and unstructured nature of this data, generated by a diverse range of users, make manual detection methods highly labour-intensive. As a result, automated intelligent mechanisms have become essential for efficiently handling event detection tasks. However, most available social media event detection approaches primarily rely on data statistics, ignoring semantics, making them vulnerable to critical information loss. Following this gap, this presentation will explore how temporal word dynamics can be involved in achieving effective event detection from social media data.

Speaker

Hansi Hettiarachchi

School of Computing and Communications, Lancaster University

This talk will be given by Dr Hansi Hettiarachchi (Computing, SPS, Lancaster University). Hansi's research primarily focuses on developing Machine Learning (ML) approaches for Natural Language Processing (NLP) tasks, particularly emphasising societal and human security and safety. Her recent work has concentrated on three main areas: online event detection (including temporal and textual event profiling, trigger and argument detection, and event causality identification), online safety (covering

Contact Details

Name Claire Hardaker
Email

c.hardaker@lancaster.ac.uk