Investigation in opinion fraud detection techniques
Dr. Chang Xu

Speaker Event details

Dr. Chang Xu
Postdoctoral Fellow
Data61, CSIRO




13 June 2018, Wednesday

4.00pm 5.00pm

Meeting Room 4-4, Level 4
School of Information Systems
Singapore Management University
80 Stamford Road
Singapore 178902

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In this talk, I will present my PhD thesis work on opinion fraud detection. Opinion fraud refers to an underground practice where spammers are hired to manipulate the perceived reputations of specific items (e.g., products) through crafting misleading reviews. In particular, I will focus on a new form of opinion fraud called collusive fraud, where spammers operate in a coordinating manner by launching multiple small campaigns towards the same targets, making them less likely to be spotted. Then, I will discuss our approaches to analysing and identifying such collusive behaviours in opinion fraud. Core to our approaches is extracting implicit behavioural clues from review data to connect such campaigned spammers. Finally, I will talk about my current research at Data61 on stance classification/comparison in NLP.

About the speaker

Dr. Chang Xu is a Postdoctoral Fellow at Data61, CSIRO. His research is in stance classification and argument mining. He completed his PhD of opinion fraud detection at Nanyang Technological University in 2017.


This research is supported by the National Research Foundation, Prime Minister's Office, Singapore under its International Research Centres in Singapore Funding Initiative.

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