1 code implementation • 24 Feb 2022 • Karishma Sharma, Emilio Ferrara, Yan Liu
Malicious accounts spreading misinformation has led to widespread false and misleading narratives in recent times, especially during the COVID-19 pandemic, and social media platforms struggle to eliminate these contents rapidly.
no code implementations • NeurIPS 2021 • Yizhou Zhang, Karishma Sharma, Yan Liu
Specifically, when modeling the observed data from social media with neural temporal point process, we jointly learn a Gibbs-like distribution of group assignment based on how consistent an assignment is to (1) the account embedding space and (2) the prior knowledge.
no code implementations • 17 Jul 2021 • Karishma Sharma, Emilio Ferrara, Yan Liu
Identifying and characterizing disinformation in political discourse on social media is critical to ensure the integrity of elections and democratic processes around the world.
no code implementations • 15 Jun 2021 • Karishma Sharma, Yizhou Zhang, Yan Liu
In this work, we investigate misinformation communities and narratives that can contribute to COVID-19 vaccine hesitancy.
no code implementations • 8 Aug 2020 • Karishma Sharma, Xinran He, Sungyong Seo, Yan Liu
Users influential in the propagation of true and fake contents are identified using the inferred diffusion dynamics.
3 code implementations • 26 Mar 2020 • Karishma Sharma, Sungyong Seo, Chuizheng Meng, Sirisha Rambhatla, Yan Liu
The analysis is presented and updated on a publically accessible dashboard (https://usc-melady. github. io/COVID-19-Tweet-Analysis) to track the nature of online discourse and misinformation about COVID-19 on Twitter from March 1 - June 5, 2020.
no code implementations • ECCV 2020 • Karishma Sharma, Pinar Donmez, Enming Luo, Yan Liu, I. Zeki Yalniz
Label noise is increasingly prevalent in datasets acquired from noisy channels.
Ranked #20 on
Image Classification
on Clothing1M
(using extra training data)
no code implementations • 18 Jan 2019 • Karishma Sharma, Feng Qian, He Jiang, Natali Ruchansky, Ming Zhang, Yan Liu
The proliferation of fake news on social media has opened up new directions of research for timely identification and containment of fake news, and mitigation of its widespread impact on public opinion.