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Hemank Lamba

5 accepted papers

2025

CEHA: A Dataset of Conflict Events in the Horn of Africa

COLING 2025main

Natural Language Processing (NLP) of news articles can play an important role in understanding the dynamics and causes of violent conflict. Despite the availability of datasets categorizing various conflict events, the existing labels often do not cover all of the fine-grained violent conflict event…

2025

Do LLMs Adhere to Label Definitions? Examining Their Receptivity to External Label Definitions

EMNLP 2025

Do LLMs genuinely incorporate external definitions, or do they primarily rely on their parametric knowledge? To address these questions, we conduct controlled experiments across multiple explanation benchmark datasets (general and domain-specific) and label definition conditions, including expert-cu

Cited by 0SourcePDFScholar
2025

Explain then Rank: Scale Calibration of Neural Rankers Using Natural Language Explanations from LLMs

ACL 2025finding

In search settings, calibrating the scores during the ranking process to quantities such as click-through rates or relevance levels enhances a system’s usefulness and trustworthiness for downstream users. While previous research has improved this notion of calibration for low complexity learning-to-…

2025

Uchaguzi-2022: A Dataset of Citizen Reports on the 2022 Kenyan Election

COLING 2025main

Online reporting platforms have enabled citizens around the world to collectively share their opinions and report in real time on events impacting their local communities. Systematically organizing (e.g., categorizing by attributes) and geotagging large amounts of crowdsourced information is crucial…

Cited by 0SourcePDFScholar
2024

HumVI: A Multilingual Dataset for Detecting Violent Incidents Impacting Humanitarian Aid

EMNLP 2024finding

Humanitarian organizations can enhance their effectiveness by analyzing data to discover trends, gather aggregated insights, manage their security risks, support decision-making, and inform advocacy and funding proposals. However, data about violent incidents with direct impact and relevance for hum…