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Ulrich Schäfer

3 accepted papers

2025

CoPrUS: Consistency Preserving Utterance Synthesis towards more realistic benchmark dialogues

COLING 2025main

Large-scale Wizard-Of-Oz dialogue datasets have enabled the training of deep learning-based dialogue systems. While they are successful as benchmark datasets, they lack certain types of utterances, which would make them more realistic. In this work, we investigate the creation of synthetic communica…

2025

MonoTODia: Translating Monologue Requests to Task-Oriented Dialogues

NAACL 2025industry

Data scarcity is one of the main problems when it comes to real-world applications of transformer-based models.This is especially evident for task-oriented dialogue (TOD) systems, which require specialized datasets, that are usually not readily available. This can hinder companies from adding TOD sy…

2024

Counterfactual Dialog Mixing as Data Augmentation for Task-Oriented Dialog Systems

COLING 2024main

High-quality training data for Task-Oriented Dialog (TOD) systems is costly to come by if no corpora are available. One method to extend available data is data augmentation. Yet, the research into and adaptation of data augmentation techniques for TOD systems is limited in comparison with other data…