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Wolfgang Nejdl

9 accepted papers

2025

Enhancing Online Climate Discourse: A Two-Stage Framework for Climate Content Categorization and Moderation

IJCAI 2025

Climate change is one of the most pressing global challenges that requires urgent adaptation and resilience efforts, highlighting the need for both scientific solutions and effective communication. In the digital age, online content plays a key role in shaping climate narratives. Therefore, previous

2025

MoVoC: Morphology-Aware Subword Construction for Ge’ez Script Languages

EMNLP 2025

Subword-based tokenization methods often fail to preserve morphological boundaries, a limitation especially pronounced in low-resource, morphologically complex languages such as those written in the Ge‘ez script. To address this, we present MoVoC (Morpheme-aware Subword Vocabulary Construction) and

2024

Data Drift in Clinical Outcome Prediction from Admission Notes

COLING 2024main

Clinical NLP research faces a scarcity of publicly available datasets due to privacy concerns. MIMIC-III marked a significant milestone, enabling substantial progress, and now, with MIMIC-IV, the dataset has expanded significantly, offering a broader scope. In this paper, we focus on the task of pre…

Cited by 1SourcePDFScholar
2024

FairTrade: Achieving Pareto-Optimal Trade-Offs between Balanced Accuracy and Fairness in Federated Learning

AAAI 2024technical

As Federated Learning (FL) gains prominence in distributed machine learning applications, achieving fairness without compromising predictive performance becomes paramount. The data being gathered from distributed clients in an FL environment often leads to class imbalance. In such scenarios, balance…

2024

IVP-VAE: Modeling EHR Time Series with Initial Value Problem Solvers

AAAI 2024technical

Continuous-time models such as Neural ODEs and Neural Flows have shown promising results in analyzing irregularly sampled time series frequently encountered in electronic health records. Based on these models, time series are typically processed with a hybrid of an initial value problem (IVP) solver…

2024

TIGQA: An Expert-Annotated Question-Answering Dataset in Tigrinya

COLING 2024main

The absence of explicitly tailored, accessible annotated datasets for educational purposes presents a notable obstacle for NLP tasks in languages with limited resources. This study initially explores the feasibility of using machine translation (MT) to convert an existing dataset into a Tigrinya dat…

2023

Intensity-Valued Emotions Help Stance Detection of Climate Change Twitter Data

IJCAI 2023poster

Our study focuses on the United Nations Sustainable Development Goal 13: Climate Action, by identifying public attitudes on Twitter about climate change. Public consent and participation is the key factor in dealing with climate crises. However, discussions about climate change on Twitter are often…