Search Results for author: Amrita Bhattacharjee

Found 16 papers, 6 papers with code

Combating Disinformation in a Social Media Age

no code implementations14 Jul 2020 Kai Shu, Amrita Bhattacharjee, Faisal Alatawi, Tahora Nazer, Kaize Ding, Mansooreh Karami, Huan Liu

The creation, dissemination, and consumption of disinformation and fabricated content on social media is a growing concern, especially with the ease of access to such sources, and the lack of awareness of the existence of such false information.

Disinformation in the Online Information Ecosystem: Detection, Mitigation and Challenges

no code implementations18 Oct 2020 Amrita Bhattacharjee, Kai Shu, Min Gao, Huan Liu

We then proceed to discuss the inherent challenges in disinformation research, and then elaborate on the computational and interdisciplinary approaches towards mitigation of disinformation, after a short overview of the various directions explored in detection efforts.

Misinformation

Reinforcement Learning Methods for Wordle: A POMDP/Adaptive Control Approach

no code implementations15 Nov 2022 Siddhant Bhambri, Amrita Bhattacharjee, Dimitri Bertsekas

In this paper we address the solution of the popular Wordle puzzle, using new reinforcement learning methods, which apply more generally to adaptive control of dynamic systems and to classes of Partially Observable Markov Decision Process (POMDP) problems.

reinforcement-learning Reinforcement Learning (RL)

Towards Detecting Harmful Agendas in News Articles

1 code implementation31 Jan 2023 Melanie Subbiah, Amrita Bhattacharjee, Yilun Hua, Tharindu Kumarage, Huan Liu, Kathleen McKeown

Manipulated news online is a growing problem which necessitates the use of automated systems to curtail its spread.

Misinformation

Stylometric Detection of AI-Generated Text in Twitter Timelines

1 code implementation7 Mar 2023 Tharindu Kumarage, Joshua Garland, Amrita Bhattacharjee, Kirill Trapeznikov, Scott Ruston, Huan Liu

However, tweets are inherently short, thus making it difficult for current state-of-the-art pre-trained language model-based detectors to accurately detect at what point the AI starts to generate tweets in a given Twitter timeline.

Language Modelling Misinformation +1

Fighting Fire with Fire: Can ChatGPT Detect AI-generated Text?

1 code implementation2 Aug 2023 Amrita Bhattacharjee, Huan Liu

Large language models (LLMs) such as ChatGPT are increasingly being used for various use cases, including text content generation at scale.

Text Detection

ConDA: Contrastive Domain Adaptation for AI-generated Text Detection

1 code implementation7 Sep 2023 Amrita Bhattacharjee, Tharindu Kumarage, Raha Moraffah, Huan Liu

Given the potential malicious nature in which these LLMs can be used to generate disinformation at scale, it is important to build effective detectors for such AI-generated text.

Contrastive Learning Text Detection +1

Towards LLM-guided Causal Explainability for Black-box Text Classifiers

no code implementations23 Sep 2023 Amrita Bhattacharjee, Raha Moraffah, Joshua Garland, Huan Liu

Inspired by recent endeavors to utilize Large Language Models (LLMs) as experts, in this work, we aim to leverage the instruction-following and textual understanding capabilities of recent state-of-the-art LLMs to facilitate causal explainability via counterfactual explanation generation for black-box text classifiers.

counterfactual Counterfactual Explanation +6

Adversarial Text Purification: A Large Language Model Approach for Defense

no code implementations5 Feb 2024 Raha Moraffah, Shubh Khandelwal, Amrita Bhattacharjee, Huan Liu

Adversarial purification is a defense mechanism for safeguarding classifiers against adversarial attacks without knowing the type of attacks or training of the classifier.

Adversarial Text Language Modelling +2

ResumeFlow: An LLM-facilitated Pipeline for Personalized Resume Generation and Refinement

no code implementations9 Feb 2024 Saurabh Bhausaheb Zinjad, Amrita Bhattacharjee, Amey Bhilegaonkar, Huan Liu

While it is highly recommended that applicants tailor their resume to the specific role they are applying for, manually tailoring resumes to job descriptions and role-specific requirements is often (1) extremely time-consuming, and (2) prone to human errors.

Hallucination Language Modelling +1

Large Language Models for Data Annotation: A Survey

1 code implementation21 Feb 2024 Zhen Tan, Alimohammad Beigi, Song Wang, Ruocheng Guo, Amrita Bhattacharjee, Bohan Jiang, Mansooreh Karami, Jundong Li, Lu Cheng, Huan Liu

Furthermore, the paper includes an in-depth taxonomy of methodologies employing LLMs for data annotation, a comprehensive review of learning strategies for models incorporating LLM-generated annotations, and a detailed discussion on primary challenges and limitations associated with using LLMs for data annotation.

Towards Interpretable Hate Speech Detection using Large Language Model-extracted Rationales

no code implementations19 Mar 2024 Ayushi Nirmal, Amrita Bhattacharjee, Paras Sheth, Huan Liu

Although social media platforms are a prominent arena for users to engage in interpersonal discussions and express opinions, the facade and anonymity offered by social media may allow users to spew hate speech and offensive content.

Hate Speech Detection Language Modelling +1

EAGLE: A Domain Generalization Framework for AI-generated Text Detection

no code implementations23 Mar 2024 Amrita Bhattacharjee, Raha Moraffah, Joshua Garland, Huan Liu

With the advancement in capabilities of Large Language Models (LLMs), one major step in the responsible and safe use of such LLMs is to be able to detect text generated by these models.

Contrastive Learning Domain Generalization +1

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