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Ralf Krestel

3 accepted papers

2024

DDxGym: Online Transformer Policies in a Knowledge Graph Based Natural Language Environment

Benjamin Winter, Alexei Gustavo Figueroa Rosero, Alexander Loeser, Felix Alexander Gers, Nancy Katerina Figueroa Rosero, Ralf Krestel
COLING 2024main

Differential diagnosis (DDx) is vital for physicians and challenging due to the existence of numerous diseases and their complex symptoms. Model training for this task is generally hindered by limited data access due to privacy concerns. To address this, we present DDxGym, a specialized OpenAI Gym e…

Cited by 3Source ↗PDF ↗Scholar ↗
2022

Art Creation with Multi-Conditional StyleGANs

Konstantin Dobler, Florian Hübscher, Jan Westphal, Alejandro Sierra-Múnera, Gerard de Melo, Ralf Krestel
IJCAI 2022poster

Creating art is often viewed as a uniquely human endeavor. In this paper, we introduce a multi-conditional Generative Adversarial Network (GAN) approach trained on large amounts of human paintings to synthesize realistic-looking paintings that emulate human art. Our approach is based on the StyleGAN…

Cited by 12Source ↗PDF ↗code ↗Scholar ↗
2021

Multifaceted Domain-Specific Document Embeddings

Julian Risch, Philipp Hager, Ralf Krestel
NAACL 2021system demonstrations

Current document embeddings require large training corpora but fail to learn high-quality representations when confronted with a small number of domain-specific documents and rare terms. Further, they transform each document into a single embedding vector, making it hard to capture different notions…

Cited by 5Source ↗PDF ↗code ↗Scholar ↗