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Neha Anna John

7 accepted papers

2025

Open Domain Question Answering with Conflicting Contexts

NAACL 2025findings

Open domain question answering systems frequently rely on information retrieved from large collections of text (such as the Web) to answer questions. However, such collections of text often contain conflicting information, and indiscriminately depending on this information may result in untruthful a…

Cited by 3SourcePDFScholar
2025

Towards Long Context Hallucination Detection

NAACL 2025findings

Large Language Models (LLMs) have demonstrated remarkable performance across various tasks. However, they are prone to contextual hallucination, generating information that is either unsubstantiated or contradictory to the given context. Although many studies have investigated contextual hallucinati…

Cited by 2SourcePDFScholar
2025

Understanding and Improving Information Preservation in Prompt Compression for LLMs

EMNLP 2025

Recent advancements in large language models (LLMs) have enabled their successful application to a broad range of tasks. However, in information-intensive tasks, the prompt length can grow fast, leading to increased computational requirements, performance degradation, and induced biases from irrelev

2025

Unraveling and Mitigating Safety Alignment Degradation of Vision-Language Models

ACL 2025finding

The safety alignment ability of Vision-Language Models (VLMs) is prone to be degraded by the integration of the vision module compared to its LLM backbone. We investigate this phenomenon, dubbed as “safety alignment degradation” in this paper, and show that the challenge arises from the representati…

Cited by 0SourcePDFScholar
2023

Characterizing and Measuring Linguistic Dataset Drift

ACL 2023long

NLP models often degrade in performance when real world data distributions differ markedly from training data. However, existing dataset drift metrics in NLP have generally not considered specific dimensions of linguistic drift that affect model performance, and they have not been validated in their…

2023

Comparing Biases and the Impact of Multilingual Training across Multiple Languages

EMNLP 2023long main

Studies in bias and fairness in natural language processing have primarily examined social biases within a single language and/or across few attributes (e.g. gender, race). However, biases can manifest differently across various languages for individual attributes. As a result, it is critical to exa…

Cited by 0SourceScholar
2023

Taxonomy Expansion for Named Entity Recognition

EMNLP 2023long main

Training a Named Entity Recognition (NER) model often involves fixing a taxonomy of entity types. However, requirements evolve and we might need the NER model to recognize additional entity types. A simple approach is to re-annotate entire dataset with both existing and additional entity types and t…

Cited by 0SourceScholar