Search Results for author: Nishanth Sastry

Found 13 papers, 6 papers with code

AI in the Gray: Exploring Moderation Policies in Dialogic Large Language Models vs. Human Answers in Controversial Topics

1 code implementation28 Aug 2023 Vahid Ghafouri, Vibhor Agarwal, Yong Zhang, Nishanth Sastry, Jose Such, Guillermo Suarez-Tangil

The introduction of ChatGPT and the subsequent improvement of Large Language Models (LLMs) have prompted more and more individuals to turn to the use of ChatBots, both for information and assistance with decision-making.

Decision Making

Illuminating an Ecosystem of Partisan Websites

1 code implementation9 Mar 2018 Shweta Bhatt, Sagar Joglekar, Shehar Bano, Nishanth Sastry

This paper aims to shed light on alternative news media ecosystems that are believed to have influenced opinions and beliefs by false and/or biased news reporting during the 2016 US Presidential Elections.

Social and Information Networks

Challenges in the Decentralised Web: The Mastodon Case

1 code implementation12 Sep 2019 Aravindh Raman, Sagar Joglekar, Emiliano De Cristofaro, Nishanth Sastry, Gareth Tyson

The Decentralised Web (DW) has recently seen a renewed momentum, with a number of DW platforms like Mastodon, Peer-Tube, and Hubzilla gaining increasing traction.

Networking and Internet Architecture Cryptography and Security Computers and Society

Decentralised Moderation for Interoperable Social Networks: A Conversation-based Approach for Pleroma and the Fediverse

1 code implementation3 Apr 2024 Vibhor Agarwal, Aravindh Raman, Nishanth Sastry, Ahmed M. Abdelmoniem, Gareth Tyson, Ignacio Castro

Recent work has exploited the conversational context of a post to improve this automatic tagging, e. g. using the replies to a post to help classify if it contains toxic speech.

TAG

Characterising Third Party Cookie Usage in the EU after GDPR

no code implementations3 May 2019 Xuehui Hu, Nishanth Sastry

We find that on average the number of third parties dropped by more than 10% after GDPR, but when we examine real users' browsing histories over a year, we find that there is no material reduction in long-term numbers of third party cookies, suggesting that users are not making use of the choices offered by GDPR for increased privacy.

Characterising User Content on a Multi-lingual Social Network

no code implementations23 Apr 2020 Pushkal Agarwal, Kiran Garimella, Sagar Joglekar, Nishanth Sastry, Gareth Tyson

In the case of images containing text that cross language barriers, we see that language translation is used to widen the accessibility.

Clustering

Discovery of the Content and Engagement with the Content

no code implementations15 Jun 2022 Pushkal Agarwal, Nishanth Sastry, Edward Wood

More recently, in an effort to further improve transparency and citizen engagement, the UK Parliament started publishing videos of these debates and meetings itself, and tweeting details of debates as they happened.

A Graph-Based Context-Aware Model to Understand Online Conversations

no code implementations16 Nov 2022 Vibhor Agarwal, Anthony P. Young, Sagar Joglekar, Nishanth Sastry

We evaluate GraphNLI on two such tasks - polarity prediction and misogynistic hate speech detection - and found that our model consistently outperforms all relevant baselines for both tasks.

Hate Speech Detection Misinformation

AnnoBERT: Effectively Representing Multiple Annotators' Label Choices to Improve Hate Speech Detection

no code implementations20 Dec 2022 Wenjie Yin, Vibhor Agarwal, Aiqi Jiang, Arkaitz Zubiaga, Nishanth Sastry

During training, the model associates annotators with their label choices given a piece of text; during evaluation, when label information is not available, the model predicts the aggregated label given by the participating annotators by utilising the learnt association.

Hate Speech Detection

GASCOM: Graph-based Attentive Semantic Context Modeling for Online Conversation Understanding

no code implementations21 Oct 2023 Vibhor Agarwal, Yu Chen, Nishanth Sastry

Specifically, we design two novel algorithms that utilise both the graph structure of the online conversation as well as the semantic information from individual posts for retrieving relevant context nodes from the whole conversation.

Graph Attention Hate Speech Detection

HateRephrase: Zero- and Few-Shot Reduction of Hate Intensity in Online Posts using Large Language Models

no code implementations21 Oct 2023 Vibhor Agarwal, Yu Chen, Nishanth Sastry

We develop 4 different prompts based on task description, hate definition, few-shot demonstrations and chain-of-thoughts for comprehensive experiments and conduct experiments on open-source LLMs such as LLaMA-1, LLaMA-2 chat, Vicuna as well as OpenAI's GPT-3. 5.

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