Search Results for author: Srijan Kumar

Found 36 papers, 19 papers with code

Mysterious Projections: Multimodal LLMs Gain Domain-Specific Visual Capabilities Without Richer Cross-Modal Projections

no code implementations26 Feb 2024 Gaurav Verma, MinJe Choi, Kartik Sharma, Jamelle Watson-Daniels, Sejoon Oh, Srijan Kumar

It is desirable to understand the roles of these two modules in modeling domain-specific visual attributes to inform the design of future models and streamline the interpretability efforts on the current models.

Language Modelling Large Language Model

Towards Fair Graph Anomaly Detection: Problem, New Datasets, and Evaluation

1 code implementation25 Feb 2024 Neng Kai Nigel Neo, Yeon-Chang Lee, Yiqiao Jin, Sang-Wook Kim, Srijan Kumar

The Fair Graph Anomaly Detection (FairGAD) problem aims to accurately detect anomalous nodes in an input graph while ensuring fairness and avoiding biased predictions against individuals from sensitive subgroups such as gender or political leanings.

Fairness Graph Anomaly Detection +1

MM-Soc: Benchmarking Multimodal Large Language Models in Social Media Platforms

no code implementations21 Feb 2024 Yiqiao Jin, MinJe Choi, Gaurav Verma, Jindong Wang, Srijan Kumar

Social media platforms are hubs for multimodal information exchange, encompassing text, images, and videos, making it challenging for machines to comprehend the information or emotions associated with interactions in online spaces.

Benchmarking Hate Speech Detection +1

FINEST: Stabilizing Recommendations by Rank-Preserving Fine-Tuning

no code implementations5 Feb 2024 Sejoon Oh, Berk Ustun, Julian McAuley, Srijan Kumar

Modern recommender systems may output considerably different recommendations due to small perturbations in the training data.

Recommendation Systems

Better to Ask in English: Cross-Lingual Evaluation of Large Language Models for Healthcare Queries

1 code implementation19 Oct 2023 Yiqiao Jin, Mohit Chandra, Gaurav Verma, Yibo Hu, Munmun De Choudhury, Srijan Kumar

Our findings underscore the pressing need to bolster the cross-lingual capacities of these models, and to provide an equitable information ecosystem accessible to all.

Adversarial Robustness of Prompt-based Few-Shot Learning for Natural Language Understanding

1 code implementation19 Jun 2023 Venkata Prabhakara Sarath Nookala, Gaurav Verma, Subhabrata Mukherjee, Srijan Kumar

Our results on six GLUE tasks indicate that compared to fully fine-tuned models, vanilla FSL methods lead to a notable relative drop in task performance (i. e., are less robust) in the face of adversarial perturbations.

Adversarial Robustness Few-Shot Learning +1

Cross-Modal Attribute Insertions for Assessing the Robustness of Vision-and-Language Learning

1 code implementation19 Jun 2023 Shivaen Ramshetty, Gaurav Verma, Srijan Kumar

The robustness of multimodal deep learning models to realistic changes in the input text is critical for their applicability to important tasks such as text-to-image retrieval and cross-modal entailment.

Attribute Image Retrieval +2

Factify 2: A Multimodal Fake News and Satire News Dataset

1 code implementation8 Apr 2023 S Suryavardan, Shreyash Mishra, Parth Patwa, Megha Chakraborty, Anku Rani, Aishwarya Reganti, Aman Chadha, Amitava Das, Amit Sheth, Manoj Chinnakotla, Asif Ekbal, Srijan Kumar

In this paper, we provide a multi-modal fact-checking dataset called FACTIFY 2, improving Factify 1 by using new data sources and adding satire articles.

Claim Verification Fact Checking +1

Reinforcement Learning-based Counter-Misinformation Response Generation: A Case Study of COVID-19 Vaccine Misinformation

1 code implementation11 Mar 2023 Bing He, Mustaque Ahamad, Srijan Kumar

In this work, we create two novel datasets of misinformation and counter-misinformation response pairs from in-the-wild social media and crowdsourcing from college-educated students.

Fact Checking Misinformation +1

A Survey of Graph Neural Networks for Social Recommender Systems

1 code implementation8 Dec 2022 Kartik Sharma, Yeon-Chang Lee, Sivagami Nambi, Aditya Salian, Shlok Shah, Sang-Wook Kim, Srijan Kumar

In this survey, we first identify 80 papers on GNN-based SocialRS after annotating 2151 papers by following the PRISMA framework (Preferred Reporting Items for Systematic Reviews and Meta-Analysis).

Recommendation Systems

Robustness of Fusion-based Multimodal Classifiers to Cross-Modal Content Dilutions

no code implementations4 Nov 2022 Gaurav Verma, Vishwa Vinay, Ryan A. Rossi, Srijan Kumar

Our work aims to highlight and encourage further research on the robustness of deep multimodal models to realistic variations, especially in human-facing societal applications.

M2TRec: Metadata-aware Multi-task Transformer for Large-scale and Cold-start free Session-based Recommendations

no code implementations23 Sep 2022 Walid Shalaby, Sejoon Oh, Amir Afsharinejad, Srijan Kumar, Xiquan Cui

Using one public and one large industrial dataset, we experimentally show that state-of-the-art SBRSs have low performance on sparse sessions with sparse items.

Session-Based Recommendations

Representation Learning in Continuous-Time Dynamic Signed Networks

no code implementations7 Jul 2022 Kartik Sharma, Mohit Raghavendra, Yeon Chang Lee, Anand Kumar M, Srijan Kumar

Modeling such dynamics of signed networks is crucial to understanding the evolution of polarization in the network and enabling effective prediction of the signed structure (i. e., link signs and signed weights) in the future.

Link Sign Prediction Representation Learning

Overcoming Language Disparity in Online Content Classification with Multimodal Learning

1 code implementation19 May 2022 Gaurav Verma, Rohit Mujumdar, Zijie J. Wang, Munmun De Choudhury, Srijan Kumar

Advances in Natural Language Processing (NLP) have revolutionized the way researchers and practitioners address crucial societal problems.

Emotion Recognition Text Detection

Characterizing, Detecting, and Predicting Online Ban Evasion

1 code implementation10 Feb 2022 Manoj Niverthi, Gaurav Verma, Srijan Kumar

We find that evasion child accounts demonstrate similarities with respect to their banned parent accounts on several behavioral axes - from similarity in usernames and edited pages to similarity in content added to the platform and its psycholinguistic attributes.

Rank List Sensitivity of Recommender Systems to Interaction Perturbations

no code implementations29 Jan 2022 Sejoon Oh, Berk Ustun, Julian McAuley, Srijan Kumar

We introduce a measure of stability for recommender systems, called Rank List Sensitivity (RLS), which measures how rank lists generated by a given recommender system at test time change as a result of a perturbation in the training data.

Recommendation Systems

PETGEN: Personalized Text Generation Attack on Deep Sequence Embedding-based Classification Models

1 code implementation14 Sep 2021 Bing He, Mustaque Ahamad, Srijan Kumar

Here we create a novel adversarial attack model against deep user sequence embedding based classification models, which use the sequence of user posts to generate user embeddings and detect malicious users.

Adversarial Attack Text Generation

Influence-guided Data Augmentation for Neural Tensor Completion

1 code implementation23 Aug 2021 Sejoon Oh, Sungchul Kim, Ryan A. Rossi, Srijan Kumar

In this paper, we propose DAIN, a general data augmentation framework that enhances the prediction accuracy of neural tensor completion methods.

Data Augmentation Imputation +2

The Role of the Crowd in Countering Misinformation: A Case Study of the COVID-19 Infodemic

no code implementations11 Nov 2020 Nicholas Micallef, Bing He, Srijan Kumar, Mustaque Ahamad, Nasir Memon

Concerned citizens (i. e., the crowd), who are users of the platforms where misinformation appears, can play a crucial role in disseminating fact-checking information and in countering the spread of misinformation.

Fact Checking Misinformation

Evaluating Graph Vulnerability and Robustness using TIGER

1 code implementation10 Jun 2020 Scott Freitas, Diyi Yang, Srijan Kumar, Hanghang Tong, Duen Horng Chau

By democratizing the tools required to study network robustness, our goal is to assist researchers and practitioners in analyzing their own networks; and facilitate the development of new research in the field.

M2P2: Multimodal Persuasion Prediction using Adaptive Fusion

no code implementations3 Jun 2020 Chongyang Bai, Haipeng Chen, Srijan Kumar, Jure Leskovec, V. S. Subrahmanian

Our M2P2 (Multimodal Persuasion Prediction) framework is the first to use multimodal (acoustic, visual, language) data to solve the IPP problem.

Racism is a Virus: Anti-Asian Hate and Counterspeech in Social Media during the COVID-19 Crisis

1 code implementation25 May 2020 Bing He, Caleb Ziems, Sandeep Soni, Naren Ramakrishnan, Diyi Yang, Srijan Kumar

The spread of COVID-19 has sparked racism and hate on social media targeted towards Asian communities.

Higher-Order Label Homogeneity and Spreading in Graphs

1 code implementation18 Feb 2020 Dhivya Eswaran, Srijan Kumar, Christos Faloutsos

Vertices with stronger connections participate in higher-order structures in graphs, which calls for methods that can leverage these structures in the semi-supervised learning tasks.

Fraud Detection Recommendation Systems

Predicting Dynamic Embedding Trajectory in Temporal Interaction Networks

1 code implementation3 Aug 2019 Srijan Kumar, Xikun Zhang, Jure Leskovec

However, existing dynamic embedding methods generate embeddings only when users take actions and do not explicitly model the future trajectory of the user/item in the embedding space.

Representation Learning

Learning Dynamic Embeddings from Temporal Interactions

no code implementations6 Dec 2018 Srijan Kumar, Xikun Zhang, Jure Leskovec

Here we present JODIE, a coupled recurrent model to jointly learn the dynamic embeddings of users and items from a sequence of user-item interactions.

Representation Learning

False Information on Web and Social Media: A Survey

3 code implementations23 Apr 2018 Srijan Kumar, Neil Shah

False information can be created and spread easily through the web and social media platforms, resulting in widespread real-world impact.

Feature Engineering Graph Mining

Community Interaction and Conflict on the Web

no code implementations9 Mar 2018 Srijan Kumar, William L. Hamilton, Jure Leskovec, Dan Jurafsky

Here we study intercommunity interactions across 36, 000 communities on Reddit, examining cases where users of one community are mobilized by negative sentiment to comment in another community.

FairJudge: Trustworthy User Prediction in Rating Platforms

no code implementations30 Mar 2017 Srijan Kumar, Bryan Hooi, Disha Makhija, Mohit Kumar, Christos Faloutsos, V. S. Subrahamanian

We propose three metrics: (i) the fairness of a user that quantifies how trustworthy the user is in rating the products, (ii) the reliability of a rating that measures how reliable the rating is, and (iii) the goodness of a product that measures the quality of the product.

Fairness

An Army of Me: Sockpuppets in Online Discussion Communities

no code implementations21 Mar 2017 Srijan Kumar, Justin Cheng, Jure Leskovec, V. S. Subrahmanian

Further, pairs of sockpuppets controlled by the same individual are more likely to interact on the same discussion at the same time than pairs of ordinary users.

Citation Classification for Behavioral Analysis of a Scientific Field

no code implementations2 Sep 2016 David Jurgens, Srijan Kumar, Raine Hoover, Dan McFarland, Dan Jurafsky

Citations are an important indicator of the state of a scientific field, reflecting how authors frame their work, and influencing uptake by future scholars.

Classification General Classification

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