Search Results for author: Claudia Plant

Found 28 papers, 8 papers with code

DISCO: Internal Evaluation of Density-Based Clustering

no code implementations28 Feb 2025 Anna Beer, Lena Krieger, Pascal Weber, Martin Ritzert, Ira Assent, Claudia Plant

In this paper, we propose DISCO, a Density-based Internal Score for Clustering Outcomes, which is the first CVI that also evaluates the quality of noise labels.

Clustering

I Want 'Em All (At Once) -- Ultrametric Cluster Hierarchies

no code implementations19 Feb 2025 Andrew Draganov, Pascal Weber, Rasmus Skibdahl Melanchton Jørgensen, Anna Beer, Claudia Plant, Ira Assent

Hierarchical clustering is a powerful tool for exploratory data analysis, organizing data into a tree of clusterings from which a partition can be chosen.

All Clustering

Motif Discovery Framework for Psychiatric EEG Data Classification

no code implementations8 Jan 2025 Melanija Kraljevska, Katerina Hlavackova-Schindler, Lukas Miklautz, Claudia Plant

In current medical practice, patients undergoing depression treatment must wait four to six weeks before a clinician can assess medication response due to the delayed noticeable effects of antidepressants.

Classification EEG

Plasticity Loss in Deep Reinforcement Learning: A Survey

no code implementations7 Nov 2024 Timo Klein, Lukas Miklautz, Kevin Sidak, Claudia Plant, Sebastian Tschiatschek

With this survey, we aim to provide an overview of the emerging research on plasticity loss for academics and practitioners of deep reinforcement learning.

Deep Reinforcement Learning reinforcement-learning +2

Breaking the Reclustering Barrier in Centroid-based Deep Clustering

1 code implementation4 Nov 2024 Lukas Miklautz, Timo Klein, Kevin Sidak, Collin Leiber, Thomas Lang, Andrii Shkabrii, Sebastian Tschiatschek, Claudia Plant

This work investigates an important phenomenon in centroid-based deep clustering (DC) algorithms: Performance quickly saturates after a period of rapid early gains.

Clustering Deep Clustering +2

SHADE: Deep Density-based Clustering

1 code implementation8 Oct 2024 Anna Beer, Pascal Weber, Lukas Miklautz, Collin Leiber, Walid Durani, Christian Böhm, Claudia Plant

Similar to existing deep clustering algorithms, SHADE supports high-dimensional and large data sets with the expressive power of a deep autoencoder.

Clustering Deep Clustering

Temporal Subspace Clustering for Molecular Dynamics Data

1 code implementation31 Jul 2024 Anna Beer, Martin Heinrigs, Claudia Plant, Ira Assent

We introduce MOSCITO (MOlecular Dynamics Subspace Clustering with Temporal Observance), a subspace clustering for molecular dynamics data.

Clustering Time Series

Advancing Anomaly Detection: Non-Semantic Financial Data Encoding with LLMs

no code implementations5 Jun 2024 Alexander Bakumenko, Kateřina Hlaváčková-Schindler, Claudia Plant, Nina C. Hubig

The findings further underscore the effectiveness of LLMs in enhancing anomaly detection in financial journal entries, particularly by tackling feature sparsity.

Anomaly Detection Sentence

ADEdgeDrop: Adversarial Edge Dropping for Robust Graph Neural Networks

no code implementations14 Mar 2024 Zhaoliang Chen, Zhihao Wu, Ylli Sadikaj, Claudia Plant, Hong-Ning Dai, Shiping Wang, Yiu-ming Cheung, Wenzhong Guo

Employing an adversarial training framework, the edge predictor utilizes the line graph transformed from the original graph to estimate the edges to be dropped, which improves the interpretability of the edge-dropping method.

Text-Guided Image Clustering

1 code implementation5 Feb 2024 Andreas Stephan, Lukas Miklautz, Kevin Sidak, Jan Philip Wahle, Bela Gipp, Claudia Plant, Benjamin Roth

We, therefore, propose Text-Guided Image Clustering, i. e., generating text using image captioning and visual question-answering (VQA) models and subsequently clustering the generated text.

Clustering Image Captioning +3

Automatic Parameter Selection for Non-Redundant Clustering

no code implementations19 Dec 2023 Collin Leiber, Dominik Mautz, Claudia Plant, Christian Böhm

In this paper, we propose a framework that utilizes the Minimum Description Length Principle (MDL) to detect the number of subspaces and clusters per subspace automatically.

Clustering

Extension of the Dip-test Repertoire -- Efficient and Differentiable p-value Calculation for Clustering

no code implementations19 Dec 2023 Lena G. M. Bauer, Collin Leiber, Christian Böhm, Claudia Plant

This accelerates computation and provides an approximation of the Dip- to Dip-p-value transformation for every single sample size.

Clustering

Spectral Clustering of Attributed Multi-relational Graphs

1 code implementation3 Nov 2023 Ylli Sadikaj, Yllka Velaj, Sahar Behzadi, Claudia Plant

Many different algorithms have been proposed in the literature: for simple graphs, for graphs with attributes associated to nodes, and for graphs where edges represent different types of relations among nodes.

Clustering Dimensionality Reduction +1

AGNN: Alternating Graph-Regularized Neural Networks to Alleviate Over-Smoothing

no code implementations14 Apr 2023 Zhaoliang Chen, Zhihao Wu, Zhenghong Lin, Shiping Wang, Claudia Plant, Wenzhong Guo

In light of this, we propose an Alternating Graph-regularized Neural Network (AGNN) composed of Graph Convolutional Layer (GCL) and Graph Embedding Layer (GEL).

Graph Embedding

Attributed Multi-order Graph Convolutional Network for Heterogeneous Graphs

no code implementations13 Apr 2023 Zhaoliang Chen, Zhihao Wu, Luying Zhong, Claudia Plant, Shiping Wang, Wenzhong Guo

Heterogeneous graph neural networks aim to discover discriminative node embeddings and relations from multi-relational networks. One challenge of heterogeneous graph learning is the design of learnable meta-paths, which significantly influences the quality of learned embeddings. Thus, in this paper, we propose an Attributed Multi-Order Graph Convolutional Network (AMOGCN), which automatically studies meta-paths containing multi-hop neighbors from an adaptive aggregation of multi-order adjacency matrices.

Graph Learning

Multi-view Graph Convolutional Networks with Differentiable Node Selection

no code implementations9 Dec 2022 Zhaoliang Chen, Lele Fu, Shunxin Xiao, Shiping Wang, Claudia Plant, Wenzhong Guo

Due to the powerful capability to gather information of neighborhood nodes, in this paper, we apply Graph Convolutional Network (GCN) to cope with heterogeneous-graph data originating from multi-view data, which is still under-explored in the field of GCN.

Graph Embedding Graph Learning +1

Learnable Graph Convolutional Network and Feature Fusion for Multi-view Learning

no code implementations16 Nov 2022 Zhaoliang Chen, Lele Fu, Jie Yao, Wenzhong Guo, Claudia Plant, Shiping Wang

In practical applications, multi-view data depicting objectives from assorted perspectives can facilitate the accuracy increase of learning algorithms.

MULTI-VIEW LEARNING

Deep Clustering With Consensus Representations

no code implementations13 Oct 2022 Lukas Miklautz, Martin Teuffenbach, Pascal Weber, Rona Perjuci, Walid Durani, Christian Böhm, Claudia Plant

Further, we propose DECCS (Deep Embedded Clustering with Consensus representationS), a deep consensus clustering method that learns a consensus representation by enhancing the embedded space to such a degree that all ensemble members agree on a common clustering result.

Clustering Clustering Ensemble +1

Interpretable Gait Recognition by Granger Causality

no code implementations14 Jun 2022 Michal Balazia, Katerina Hlavackova-Schindler, Petr Sojka, Claudia Plant

We apply the graphical Granger model (GGM) to obtain the so-called Granger causal graph among joints as a discriminative and visually interpretable representation of a person's gait.

Causal Inference Gait Recognition

Causal Discovery in Hawkes Processes by Minimum Description Length

no code implementations10 Jun 2022 Amirkasra Jalaldoust, Katerina Hlavackova-Schindler, Claudia Plant

The synthetic experiments demonstrate superiority of our method incausal graph discovery compared to the baseline methods with respect to the size of the data.

Causal Discovery Model Selection +1

GPU backed Data Mining on Android Devices

no code implementations9 Dec 2021 Robert Fritze, Claudia Plant

We have created a wrapper library that allows to use OpenCL on Android devices.

Network Embedding via Deep Prediction Model

no code implementations27 Apr 2021 Xin Sun, Zenghui Song, Yongbo Yu, Junyu Dong, Claudia Plant, Christian Boehm

This paper proposes a network embedding framework to capture the transfer behaviors on structured networks via deep prediction models.

Clustering Feature Engineering +4

Massively Parallel Graph Drawing and Representation Learning

1 code implementation6 Nov 2020 Christian Böhm, Claudia Plant

To fully exploit the performance potential of modern multi-core processors, machine learning and data mining algorithms for big data must be parallelized in multiple ways.

Graph Embedding Graph Representation Learning

Incorporating User's Preference into Attributed Graph Clustering

1 code implementation24 Mar 2020 Wei Ye, Dominik Mautz, Christian Boehm, Ambuj Singh, Claudia Plant

In contrast to global clustering, local clustering aims to find only one cluster that is concentrating on the given seed vertex (and also on the designated attributes for attributed graphs).

Attribute Clustering +1

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