Search Results for author: Klemens Böhm

Found 15 papers, 8 papers with code

Efficient Generation of Hidden Outliers for Improved Outlier Detection

1 code implementation6 Feb 2024 Jose Cribeiro-Ramallo, Vadim Arzamasov, Klemens Böhm

The only existing method accounting for this property falls short in efficiency and effectiveness.

Outlier Detection

Uncertainty-Aware Partial-Label Learning

1 code implementation1 Feb 2024 Tobias Fuchs, Florian Kalinke, Klemens Böhm

In real-world applications, one often encounters ambiguously labeled data, where different annotators assign conflicting class labels.

Autonomous Driving Partial Label Learning

Adaptive Bernstein Change Detector for High-Dimensional Data Streams

1 code implementation22 Jun 2023 Marco Heyden, Edouard Fouché, Vadim Arzamasov, Tanja Fenn, Florian Kalinke, Klemens Böhm

In high-dimensional data, change detectors should not only be able to identify when changes happen, but also in which subspace they occur.

Change Detection

Budgeted Multi-Armed Bandits with Asymmetric Confidence Intervals

no code implementations12 Jun 2023 Marco Heyden, Vadim Arzamasov, Edouard Fouché, Klemens Böhm

We study the stochastic Budgeted Multi-Armed Bandit (MAB) problem, where a player chooses from $K$ arms with unknown expected rewards and costs.

Multi-Armed Bandits

Maximum Mean Discrepancy on Exponential Windows for Online Change Detection

no code implementations25 May 2022 Florian Kalinke, Marco Heyden, Edouard Fouché, Klemens Böhm

Detecting changes is of fundamental importance when analyzing data streams and has many applications, e. g., predictive maintenance, fraud detection, or medicine.

Change Detection Fraud Detection

Pedagogical Rule Extraction to Learn Interpretable Models - an Empirical Study

no code implementations25 Dec 2021 Vadim Arzamasov, Benjamin Jochum, Klemens Böhm

Decision trees, classification rules, and subgroup discovery are three broad categories of supervised machine-learning models presenting knowledge in the form of interpretable rules.

BIG-bench Machine Learning Subgroup Discovery

Efficient Subspace Search in Data Streams

1 code implementation13 Nov 2020 Edouard Fouché, Florian Kalinke, Klemens Böhm

In the real world, data streams are ubiquitous -- think of network traffic or sensor data.

Outlier Detection

Efficient SVDD Sampling with Approximation Guarantees for the Decision Boundary

2 code implementations29 Sep 2020 Adrian Englhardt, Holger Trittenbach, Daniel Kottke, Bernhard Sick, Klemens Böhm

Our approach is to frame SVDD sampling as an optimization problem, where constraints guarantee that sampling indeed approximates the original decision boundary.

General Classification Novelty Detection

Generating Artificial Outliers in the Absence of Genuine Ones -- a Survey

no code implementations5 Jun 2020 Georg Steinbuss, Klemens Böhm

Ultimately, to guide the choice of the generation approach in a specific context, we propose an appropriate general-decision process.

Benchmarking Experimental Design +1

Incremental Real-Time Personalization in Human Activity Recognition Using Domain Adaptive Batch Normalization

no code implementations25 May 2020 Alan Mazankiewicz, Klemens Böhm, Mario Bergés

Previous work has addressed this challenge by personalizing general recognition models to the unique motion pattern of a new user in a static batch setting.

Human Activity Recognition Online Domain Adaptation

Active Learning of SVDD Hyperparameter Values

no code implementations4 Dec 2019 Holger Trittenbach, Klemens Böhm, Ira Assent

Existing methods to estimate hyperparameter values are purely heuristic, and the conditions under which they work well are unclear.

Active Learning Outlier Detection

REDS: Rule Extraction for Discovering Scenarios

1 code implementation3 Oct 2019 Vadim Arzamasov, Klemens Böhm

Given a computational budget, results tend to get worse as the number of inputs of the simulation model and the cost of simulations increase.

Subgroup Discovery

Monte Carlo Dependency Estimation

1 code implementation4 Oct 2018 Edouard Fouché, Klemens Böhm

In this paper, we propose Monte Carlo Dependency Estimation (MCDE), a theoretical framework to estimate multivariate dependency in static and dynamic data.

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