Search Results for author: Valerie Vaquet

Found 15 papers, 6 papers with code

An Algorithm-Centered Approach To Model Streaming Data

no code implementations12 Dec 2024 Fabian Hinder, Valerie Vaquet, David Komnick, Barbara Hammer

Besides the classical offline setup of machine learning, stream learning constitutes a well-established setup where data arrives over time in potentially non-stationary environments.

Learning Theory model

Adversarial Attacks for Drift Detection

no code implementations25 Nov 2024 Fabian Hinder, Valerie Vaquet, Barbara Hammer

Concept drift refers to the change of data distributions over time.

Drift Detection

FairGLVQ: Fairness in Partition-Based Classification

1 code implementation16 Oct 2024 Felix Störck, Fabian Hinder, Johannes Brinkrolf, Benjamin Paassen, Valerie Vaquet, Barbara Hammer

The contribution of this work is twofold: 1) we develop a general framework for fair machine learning of partition-based models that does not depend on a specific fairness definition, and 2) we derive a fair version of learning vector quantization (LVQ) as a specific instantiation.

Classification Fairness +2

Challenges, Methods, Data -- a Survey of Machine Learning in Water Distribution Networks

no code implementations16 Oct 2024 Valerie Vaquet, Fabian Hinder, André Artelt, Inaam Ashraf, Janine Strotherm, Jonas Vaquet, Johannes Brinkrolf, Barbara Hammer

Research on methods for planning and controlling water distribution networks gains increasing relevance as the availability of drinking water will decrease as a consequence of climate change.

Investigating the Suitability of Concept Drift Detection for Detecting Leakages in Water Distribution Networks

1 code implementation3 Jan 2024 Valerie Vaquet, Fabian Hinder, Barbara Hammer

In this work, we explore the potential of model-loss-based and distribution-based drift detection methods to tackle leakage detection.

Drift Detection

A Remark on Concept Drift for Dependent Data

1 code implementation15 Dec 2023 Fabian Hinder, Valerie Vaquet, Barbara Hammer

Concept drift, i. e., the change of the data generating distribution, can render machine learning models inaccurate.

Time Series

Localizing Anomalies in Critical Infrastructure using Model-Based Drift Explanations

1 code implementation24 Oct 2023 Valerie Vaquet, Fabian Hinder, Jonas Vaquet, Kathrin Lammers, Lars Quakernack, Barbara Hammer

Facing climate change, the already limited availability of drinking water will decrease in the future rendering drinking water an increasingly scarce resource.

Anomaly Detection

One or Two Things We know about Concept Drift -- A Survey on Monitoring Evolving Environments

no code implementations24 Oct 2023 Fabian Hinder, Valerie Vaquet, Barbara Hammer

In addition to providing a systematic literature review, this work provides precise mathematical definitions of the considered problems and contains standardized experiments on parametric artificial datasets allowing for a direct comparison of different strategies for detection and localization.

Anomaly Detection Drift Detection +1

Model Based Explanations of Concept Drift

no code implementations16 Mar 2023 Fabian Hinder, Valerie Vaquet, Johannes Brinkrolf, Barbara Hammer

To do so, we propose a methodology to reduce the explanation of concept drift to an explanation of models that are trained in a suitable way extracting relevant information regarding the drift.

model

Combining self-labeling and demand based active learning for non-stationary data streams

no code implementations8 Feb 2023 Valerie Vaquet, Fabian Hinder, Johannes Brinkrolf, Barbara Hammer

Learning from non-stationary data streams is a research direction that gains increasing interest as more data in form of streams becomes available, for example from social media, smartphones, or industrial process monitoring.

Active Learning valid

On the Change of Decision Boundaries and Loss in Learning with Concept Drift

no code implementations2 Dec 2022 Fabian Hinder, Valerie Vaquet, Johannes Brinkrolf, Barbara Hammer

More precisely, we relate a change of the ITTE to the presence of real drift, i. e., a changed posterior, and to a change of the training result under the assumption of optimality.

Drift Detection

Precise Change Point Detection using Spectral Drift Detection

no code implementations13 May 2022 Fabian Hinder, André Artelt, Valerie Vaquet, Barbara Hammer

The notion of concept drift refers to the phenomenon that the data generating distribution changes over time; as a consequence machine learning models may become inaccurate and need adjustment.

Change Point Detection Drift Detection

Suitability of Different Metric Choices for Concept Drift Detection

no code implementations19 Feb 2022 Fabian Hinder, Valerie Vaquet, Barbara Hammer

In this paper, we analyze structural properties of the drift induced signals in the context of different metrics.

Drift Detection

Contrastive Explanations for Explaining Model Adaptations

1 code implementation6 Apr 2021 André Artelt, Fabian Hinder, Valerie Vaquet, Robert Feldhans, Barbara Hammer

We also propose a method for automatically finding regions in data space that are affected by a given model adaptation and thus should be explained.

Decision Making model

Evaluating Robustness of Counterfactual Explanations

1 code implementation3 Mar 2021 André Artelt, Valerie Vaquet, Riza Velioglu, Fabian Hinder, Johannes Brinkrolf, Malte Schilling, Barbara Hammer

Counterfactual explanations explain a behavior to the user by proposing actions -- as changes to the input -- that would cause a different (specified) behavior of the system.

counterfactual Decision Making +1

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