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Nils Constantin Hellwig

Observed names: Hellwig, Nils Constantin, Hellwig, Nils-Constantin
ORCID: 0009-0000-7305-8797
Observed ORCID: 0009-0000-7305-8797
OpenAlex ID: A5093323666
Exploring large language models for the generation of synthetic training samples for aspect-based sentiment analysis in low resource settings
2024 · Nils Constantin Hellwig, Jakob Fehle, et al. · Expert Systems with Applications · 40
Artificial Intelligence and Deep Learning for Advancing PET Image Reconstruction: State-of-the-Art and Future Directions
2023 · Dirk Hellwig, Nils Constantin Hellwig, et al. · Nuklearmedizin - NuclearMedicine · 27
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Exploring Twitter discourse with BERTopic: topic modeling of tweets related to the major German parties during the 2021 German federal election
2024 · Nils Constantin Hellwig, Jakob Fehle, et al. · International Journal of Speech Technology · 7
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Leveraging fine-tuning of large language models for aspect-based sentiment analysis in resource-scarce environments
2026 · Jakob Fehle, Udo Kruschwitz, et al. · Knowledge-Based Systems · 2
Do we still need Human Annotators? Prompting Large Language Models for Aspect Sentiment Quad Prediction
2025 · Nils Constantin Hellwig, Jakob Fehle, et al. · Joint Workshop on Large Language Models and Structure Modeling (XLLM) · 2
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nchellwig at SemEval-2026 Task 3: Self-Consistent Structured Generation (SCSG) for Dimensional Aspect-Based Sentiment Analysis using Large Language Models
2026 · Nils Constantin Hellwig, Jakob Fehle, et al. · International Workshop on Semantic Evaluation (SemEval) · 1
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Prompting Is All You Need: Multi-view Prompting Large Language Models for Aspect-Based Sentiment Analysis
2026 · Hellwig, Nils Constantin, Donhauser, Niklas, et al. · arXiv (Cornell University)
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Annotation Quality in Aspect-Based Sentiment Analysis: A Case Study Comparing Experts, Students, Crowdworkers, and Large Language Model
2026 · Donhauser, Niklas, Fehle, Jakob, et al. · arXiv (Cornell University)
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Annotation Quality in Aspect-Based Sentiment Analysis: A Case Study Comparing Experts, Students, Crowdworkers, and Large Language Models
2026 · Niklas Donhauser, Jakob Fehle, et al. · Language Resources and Evaluation Conference (LREC)
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AnnoABSA: A Web-Based Annotation Tool for Aspect-Based Sentiment Analysis with Retrieval-Augmented Suggestions
2026 · Nils Constantin Hellwig, Jakob Fehle, et al. · Language Resources and Evaluation Conference (LREC)
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Zero-Shot to Full-Resource: Cross-lingual Transfer Strategies for Aspect-Based Sentiment Analysis
2026 · Jakob Fehle, Nils Constantin Hellwig, et al. · Language Resources and Evaluation Conference (LREC)
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LLM-as-an-Annotator: Training Lightweight Models with LLM-Annotated Examples for Aspect Sentiment Tuple Prediction
2026 · Nils Constantin Hellwig, Jakob Fehle, et al. · Language Resources and Evaluation Conference (LREC)
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Zero-Shot to Full-Resource: Cross-lingual Transfer Strategies for Aspect-Based Sentiment Analysis
2026 · Fehle, Jakob, Hellwig, Nils Constantin, et al. · arXiv (Cornell University)
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LLM-as-an-Annotator: Training Lightweight Models with LLM-Annotated Examples for Aspect Sentiment Tuple Prediction
2026 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · arXiv (Cornell University)
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nchellwig at SemEval-2026 Task 3: Self-Consistent Structured Generation (SCSG) for Dimensional Aspect-Based Sentiment Analysis using Large Language Models
2026 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · arXiv (Cornell University)
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AnnoABSA: A Web-Based Annotation Tool for Aspect-Based Sentiment Analysis with Retrieval-Augmented Suggestions
2026 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · arXiv (Cornell University)
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LLM-as-an-Annotator: Training Lightweight Models with LLM-Annotated Examples for Aspect Sentiment Tuple Prediction
2026 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · University of Regensburg Publication Server (University of Regensburg)
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Zero-Shot to Full-Resource: Cross-lingual Transfer Strategies for Aspect-Based Sentiment Analysis
2026 · Fehle, Jakob, Hellwig, Nils Constantin, et al. · University of Regensburg Publication Server (University of Regensburg)
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AnnoABSA: A Web-Based Annotation Tool for Aspect-Based Sentiment Analysis with Retrieval-Augmented Suggestions
2026 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · University of Regensburg Publication Server (University of Regensburg)
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schmerle at SemEval-2026 Task 4: Exploring Large Language Model Prompting Strategies for Low-Resource Narrative Similarity Detection
2026 · Maximilian Schmerle, Nils Constantin Hellwig · International Workshop on Semantic Evaluation (SemEval)
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More than just Prompts – KI-Einsatz in den Regensburger Medieninformatik-Studiengängen
2026 · Wolff, Christian, Achmann-Denkler, Michael, et al. · Gesellschaft für Informatik (GI)
Do we still need Human Annotators? Prompting Large Language Models for Aspect Sentiment Quad Prediction
2025 · Hellwig, Nils Constantin, Fehle, Jakob, et al. · arXiv (Cornell University)
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German Aspect-based Sentiment Analysis in the Wild: B2B Dataset Creation and Cross-Domain Evaluation
2025 · Fehle, Jakob, Donhauser, Niklas, et al. · University of Regensburg Publication Server (University of Regensburg)
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Works count: 23
Citation count: 79
H-index: 3
I10-index: 2
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