Search Results for author: Ansgar Scherp

Found 24 papers, 18 papers with code

Text Role Classification in Scientific Charts Using Multimodal Transformers

1 code implementation8 Feb 2024 Hye Jin Kim, Nicolas Lell, Ansgar Scherp

The models are evaluated on various chart datasets, and results show that LayoutLMv3 outperforms UDOP in all experiments.

Data Augmentation Document Layout Analysis

Open-World Lifelong Graph Learning

1 code implementation19 Oct 2023 Marcel Hoffmann, Lukas Galke, Ansgar Scherp

We study the problem of lifelong graph learning in an open-world scenario, where a model needs to deal with new tasks and potentially unknown classes.

Graph Learning Out of Distribution (OOD) Detection

Fine-Tuning Language Models for Scientific Writing Support

1 code implementation19 Jun 2023 Justin Mücke, Daria Waldow, Luise Metzger, Philipp Schauz, Marcel Hoffman, Nicolas Lell, Ansgar Scherp

Firstly, we propose a regression model trained on a corpus of scientific sentences extracted from peer-reviewed scientific papers and non-scientific text to assign a score that indicates the scientificness of a sentence.

Sentence

Memorization of Named Entities in Fine-tuned BERT Models

1 code implementation7 Dec 2022 Andor Diera, Nicolas Lell, Aygul Garifullina, Ansgar Scherp

One such risk is training data extraction from language models that have been trained on datasets, which contain personal and privacy sensitive information.

Memorization Privacy Preserving +4

Event and Entity Extraction from Generated Video Captions

1 code implementation5 Nov 2022 Johannes Scherer, Ansgar Scherp, Deepayan Bhowmik

Our experiments show that it is possible to extract entities, their properties, relations between entities, and the video category from the generated captions.

Caption Generation Dense Video Captioning

Are We Really Making Much Progress in Text Classification? A Comparative Review

no code implementations8 Apr 2022 Lukas Galke, Andor Diera, Bao Xin Lin, Bhakti Khera, Tim Meuser, Tushar Singhal, Fabian Karl, Ansgar Scherp

This study reviews and compares methods for single-label and multi-label text classification, categorized into bag-of-words, sequence-based, graph-based, and hierarchical methods.

Multi-Label Classification Multi Label Text Classification +2

Graph Summarization with Graph Neural Networks

1 code implementation11 Mar 2022 Maximilian Blasi, Manuel Freudenreich, Johannes Horvath, David Richerby, Ansgar Scherp

A graph summary based on equivalence classes preserves pre-defined features of a graph's vertex within a $k$-hop neighborhood such as the vertex labels and edge labels.

Lifelong Learning on Evolving Graphs Under the Constraints of Imbalanced Classes and New Classes

1 code implementation20 Dec 2021 Lukas Galke, Iacopo Vagliano, Benedikt Franke, Tobias Zielke, Marcel Hoffmann, Ansgar Scherp

The combination of these two challenges is particularly relevant since newly emerging classes typically resemble only a tiny fraction of the data, adding to the already skewed class distribution.

Graph Attention Graph Learning +2

General Cross-Architecture Distillation of Pretrained Language Models into Matrix Embeddings

1 code implementation17 Sep 2021 Lukas Galke, Isabelle Cuber, Christoph Meyer, Henrik Ferdinand Nölscher, Angelina Sonderecker, Ansgar Scherp

We match or exceed the scores of ELMo for all tasks of the GLUE benchmark except for the sentiment analysis task SST-2 and the linguistic acceptability task CoLA.

CoLA Linguistic Acceptability +6

Bag-of-Words vs. Graph vs. Sequence in Text Classification: Questioning the Necessity of Text-Graphs and the Surprising Strength of a Wide MLP

2 code implementations ACL 2022 Lukas Galke, Ansgar Scherp

We show that a wide multi-layer perceptron (MLP) using a Bag-of-Words (BoW) outperforms the recent graph-based models TextGCN and HeteGCN in an inductive text classification setting and is comparable with HyperGAT.

text-classification Text Classification

Analysis of GraphSum's Attention Weights to Improve the Explainability of Multi-Document Summarization

no code implementations19 May 2021 M. Lautaro Hickmann, Fabian Wurzberger, Megi Hoxhalli, Arne Lochner, Jessica Töllich, Ansgar Scherp

We observe a high correlation between the attention weights and this reference metric, especially on the the later decoding layers of the transformer architecture.

Document Summarization Multi-Document Summarization +2

rx-anon -- A Novel Approach on the De-Identification of Heterogeneous Data based on a Modified Mondrian Algorithm

no code implementations18 May 2021 Fabian Singhofer, Aygul Garifullina, Mathias Kern, Ansgar Scherp

To control the influence of anonymization over unstructured textual data versus structured data attributes, we introduce a modified, parameterized Mondrian algorithm.

De-identification

Recommendations for Item Set Completion: On the Semantics of Item Co-Occurrence With Data Sparsity, Input Size, and Input Modalities

1 code implementation10 May 2021 Iacopo Vagliano, Lukas Galke, Ansgar Scherp

In conclusion, it is crucial to consider the semantics of the item co-occurrence for the choice of an appropriate recommendation model and carefully decide which metadata to exploit.

Attribute Citation Recommendation

A Comparison of Deep-Learning Methods for Analysing and Predicting Business Processes

2 code implementations11 Feb 2021 Ishwar Venugopal, Jessica Töllich, Michael Fairbank, Ansgar Scherp

In contrast to existing studies, we evaluate our models' performance at different stages of a process, determined by quartiles of the number of events and normalized quarters of the case duration.

Online Learning of Graph Neural Networks: When Can Data Be Permanently Deleted

no code implementations1 Jan 2021 Lukas Paul Achatius Galke, Benedikt Franke, Tobias Zielke, Ansgar Scherp

In most cases, i. e., 15 out 18 experiments, we even observe that a temporal window of size 1 is sufficient to retain at least 90%.

Lifelong Learning of Graph Neural Networks for Open-World Node Classification

1 code implementation25 Jun 2020 Lukas Galke, Benedikt Franke, Tobias Zielke, Ansgar Scherp

Graph neural networks (GNNs) have emerged as the standard method for numerous tasks on graph-structured data such as node classification.

Node Classification

Multi-Modal Adversarial Autoencoders for Recommendations of Citations and Subject Labels

1 code implementation22 Jul 2019 Lukas Galke, Florian Mai, Iacopo Vagliano, Ansgar Scherp

We present multi-modal adversarial autoencoders for recommendation and evaluate them on two different tasks: citation recommendation and subject label recommendation.

Citation Recommendation

Can Graph Neural Networks Go "Online"? An Analysis of Pretraining and Inference

1 code implementation15 May 2019 Lukas Galke, Iacopo Vagliano, Ansgar Scherp

In this setup, we compare adapting pretrained graph neural networks against retraining from scratch.

CBOW Is Not All You Need: Combining CBOW with the Compositional Matrix Space Model

1 code implementation ICLR 2019 Florian Mai, Lukas Galke, Ansgar Scherp

In order to address this shortcoming, we propose a learning algorithm for the Continuous Matrix Space Model, which we call Continual Multiplication of Words (CMOW).

Word Embeddings

Using Titles vs. Full-text as Source for Automated Semantic Document Annotation

1 code implementation15 May 2017 Lukas Galke, Florian Mai, Alan Schelten, Dennis Brunsch, Ansgar Scherp

For the first time, we offer a systematic comparison of classification approaches to investigate how far semantic annotations can be conducted using just the metadata of the documents such as titles published as labels on the Linked Open Data cloud.

Document Classification General Classification +3

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