Search Results for author: Emmanuel Müller

Found 19 papers, 10 papers with code

Deep One-Class Classification

1 code implementation ICML 2018 Lukas Ruff, Robert Vandermeulen, Nico Goernitz, Lucas Deecke, Shoaib Ahmed Siddiqui, Alexander Binder, Emmanuel Müller, Marius Kloft

Despite the great advances made by deep learning in many machine learning problems, there is a relative dearth of deep learning approaches for anomaly detection.

Classification One-Class Classification +1

VERSE: Versatile Graph Embeddings from Similarity Measures

2 code implementations13 Mar 2018 Anton Tsitsulin, Davide Mottin, Panagiotis Karras, Emmanuel Müller

Embedding a web-scale information network into a low-dimensional vector space facilitates tasks such as link prediction, classification, and visualization.

Link Prediction

NetLSD: Hearing the Shape of a Graph

1 code implementation27 May 2018 Anton Tsitsulin, Davide Mottin, Panagiotis Karras, Alex Bronstein, Emmanuel Müller

However, it is a hard task in terms of the expressiveness of the employed similarity measure and the efficiency of its computation.

Social and Information Networks

The Shape of Data: Intrinsic Distance for Data Distributions

2 code implementations ICLR 2020 Anton Tsitsulin, Marina Munkhoeva, Davide Mottin, Panagiotis Karras, Alex Bronstein, Ivan Oseledets, Emmanuel Müller

The ability to represent and compare machine learning models is crucial in order to quantify subtle model changes, evaluate generative models, and gather insights on neural network architectures.

Unsupervised Features Ranking via Coalitional Game Theory for Categorical Data

1 code implementation17 May 2022 Chiara Balestra, Florian Huber, Andreas Mayr, Emmanuel Müller

Unsupervised feature selection aims to reduce the number of features, often using feature importance scores to quantify the relevancy of single features to the task at hand.

Anomaly Detection Feature Importance +1

Differentiable Segmentation of Sequences

1 code implementation ICLR 2021 Erik Scharwächter, Jonathan Lennartz, Emmanuel Müller

We build on recent advances in learning continuous warping functions and propose a novel family of warping functions based on the two-sided power (TSP) distribution.

Change Point Detection Segmentation

Does Terrorism Trigger Online Hate Speech? On the Association of Events and Time Series

1 code implementation30 Apr 2020 Erik Scharwächter, Emmanuel Müller

We propose a novel statistical methodology to measure, test and visualize the systematic association between rare events and peaks in a time series.

Causal Inference Point Processes +2

Two-Sample Testing for Event Impacts in Time Series

1 code implementation31 Jan 2020 Erik Scharwächter, Emmanuel Müller

Unfortunately, it is often non-trivial to select both a time series that is informative about events and a powerful detection algorithm: detection may fail because the detection algorithm is not suitable, or because there is no shared information between the time series and the events of interest.

Event Detection Time Series +3

Statistical Evaluation of Anomaly Detectors for Sequences

1 code implementation13 Aug 2020 Erik Scharwächter, Emmanuel Müller

Although precision and recall are standard performance measures for anomaly detection, their statistical properties in sequential detection settings are poorly understood.

Anomaly Detection

SGR: Self-Supervised Spectral Graph Representation Learning

no code implementations15 Nov 2018 Anton Tsitsulin, Davide Mottin, Panagiotis Karras, Alex Bronstein, Emmanuel Müller

Representing a graph as a vector is a challenging task; ideally, the representation should be easily computable and conducive to efficient comparisons among graphs, tailored to the particular data and analytical task at hand.

Graph Representation Learning

FREDE: Anytime Graph Embeddings

no code implementations8 Jun 2020 Anton Tsitsulin, Marina Munkhoeva, Davide Mottin, Panagiotis Karras, Ivan Oseledets, Emmanuel Müller

Low-dimensional representations, or embeddings, of a graph's nodes facilitate several practical data science and data engineering tasks.

Graph Embedding

Graph Clustering with Graph Neural Networks

no code implementations NeurIPS 2023 Anton Tsitsulin, John Palowitch, Bryan Perozzi, Emmanuel Müller

Graph Neural Networks (GNNs) have achieved state-of-the-art results on many graph analysis tasks such as node classification and link prediction.

Attribute Clustering +3

RODD: Robust Outlier Detection in Data Cubes

no code implementations14 Mar 2023 Lara Kuhlmann, Daniel Wilmes, Emmanuel Müller, Markus Pauly, Daniel Horn

We propose a general type of test data and examine all methods in a simulation study.

Outlier Detection

Interpretable Anomaly Detection via Discrete Optimization

no code implementations24 Mar 2023 Simon Lutz, Florian Wittbold, Simon Dierl, Benedikt Böing, Falk Howar, Barbara König, Emmanuel Müller, Daniel Neider

Anomaly detection is essential in many application domains, such as cyber security, law enforcement, medicine, and fraud protection.

Anomaly Detection Decision Making

Prototypes as Explanation for Time Series Anomaly Detection

no code implementations4 Jul 2023 Bin Li, Carsten Jentsch, Emmanuel Müller

Detecting abnormal patterns that deviate from a certain regular repeating pattern in time series is essential in many big data applications.

Anomaly Detection Time Series +1

Redundancy-aware unsupervised rankings for collections of gene sets

no code implementations30 Jul 2023 Chiara Balestra, Carlo Maj, Emmanuel Müller, Andreas Mayr

The rankings can be used to reduce the dimension of collections of gene sets, such that they show lower redundancy and still a high coverage of the genes.

On the Effectiveness of Heterogeneous Ensemble Methods for Re-identification

no code implementations19 Mar 2024 Simon Klüttermann, Jérôme Rutinowski, Anh Nguyen, Britta Grimme, Moritz Roidl, Emmanuel Müller

In this contribution, we introduce a novel ensemble method for the re-identification of industrial entities, using images of chipwood pallets and galvanized metal plates as dataset examples.

About Test-time training for outlier detection

no code implementations4 Apr 2024 Simon Klüttermann, Emmanuel Müller

In this paper, we introduce DOUST, our method applying test-time training for outlier detection, significantly improving the detection performance.

Outlier Detection

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