Search Results for author: Bernhard Sick

Found 71 papers, 13 papers with code

Criteria for Uncertainty-based Corner Cases Detection in Instance Segmentation

no code implementations17 Apr 2024 Florian Heidecker, Ahmad El-Khateeb, Maarten Bieshaar, Bernhard Sick

We also present our first results of an iterative training cycle that outperforms the baseline and where the data added to the training dataset is selected based on the corner case decision function.

Instance Segmentation Navigate +1

Fast Fishing: Approximating BAIT for Efficient and Scalable Deep Active Image Classification

1 code implementation13 Apr 2024 Denis Huseljic, Paul Hahn, Marek Herde, Lukas Rauch, Bernhard Sick

BAIT, a recently proposed AL strategy based on the Fisher Information, has demonstrated impressive performance across various datasets.

Active Learning Binary Classification +2

Spatio-Temporal Attention Graph Neural Network for Remaining Useful Life Prediction

no code implementations29 Jan 2024 Zhixin Huang, Yujiang He, Bernhard Sick

Our model combines graph neural networks and temporal convolutional neural networks for spatial and temporal feature extraction, respectively.

Management

Enhancing Multi-Objective Optimization through Machine Learning-Supported Multiphysics Simulation

1 code implementation22 Sep 2023 Diego Botache, Jens Decke, Winfried Ripken, Abhinay Dornipati, Franz Götz-Hahn, Mohamed Ayeb, Bernhard Sick

This paper presents a methodological framework for training, self-optimising, and self-organising surrogate models to approximate and speed up multiobjective optimisation of technical systems based on multiphysics simulations.

Active Label Refinement for Semantic Segmentation of Satellite Images

no code implementations12 Sep 2023 Tuan Pham Minh, Jayan Wijesingha, Daniel Kottke, Marek Herde, Denis Huseljic, Bernhard Sick, Michael Wachendorf, Thomas Esch

Since these initial labels are partially erroneous, we use active learning strategies to cost-efficiently refine the labels in the second step.

Active Learning Segmentation +1

Active Bird2Vec: Towards End-to-End Bird Sound Monitoring with Transformers

no code implementations14 Aug 2023 Lukas Rauch, Raphael Schwinger, Moritz Wirth, Bernhard Sick, Sven Tomforde, Christoph Scholz

We propose a shift towards end-to-end learning in bird sound monitoring by combining self-supervised (SSL) and deep active learning (DAL).

Active Learning Decision Making

Unraveling the Complexity of Splitting Sequential Data: Tackling Challenges in Video and Time Series Analysis

no code implementations26 Jul 2023 Diego Botache, Kristina Dingel, Rico Huhnstock, Arno Ehresmann, Bernhard Sick

Splitting of sequential data, such as videos and time series, is an essential step in various data analysis tasks, including object tracking and anomaly detection.

Anomaly Detection Object Tracking +2

The IMPTC Dataset: An Infrastructural Multi-Person Trajectory and Context Dataset

1 code implementation12 Jul 2023 Manuel Hetzel, Hannes Reichert, Günther Reitberger, Erich Fuchs, Konrad Doll, Bernhard Sick

In addition, to enable the entire stack of research capabilities, the dataset includes all data, starting from the sensor-, calibration- and detection data until trajectory and context data.

Scene Understanding

DADO -- Low-Cost Query Strategies for Deep Active Design Optimization

no code implementations10 Jul 2023 Jens Decke, Christian Gruhl, Lukas Rauch, Bernhard Sick

We present two selection strategies for self-optimization to reduce the computational cost in multi-objective design optimization problems.

Active Learning

ActiveGLAE: A Benchmark for Deep Active Learning with Transformers

1 code implementation16 Jun 2023 Lukas Rauch, Matthias Aßenmacher, Denis Huseljic, Moritz Wirth, Bernd Bischl, Bernhard Sick

Deep active learning (DAL) seeks to reduce annotation costs by enabling the model to actively query instance annotations from which it expects to learn the most.

Active Learning

Sampling-based Uncertainty Estimation for an Instance Segmentation Network

no code implementations24 May 2023 Florian Heidecker, Ahmad El-Khateeb, Bernhard Sick

The examination of uncertainty in the predictions of machine learning (ML) models is receiving increasing attention.

Clustering Instance Segmentation +1

Dataset of a parameterized U-bend flow for Deep Learning Applications

no code implementations9 May 2023 Jens Decke, Olaf Wünsch, Bernhard Sick

This third representation enables considering the specific data structure of numerical simulations for deep learning approaches.

Sensor Equivariance by LiDAR Projection Images

no code implementations29 Apr 2023 Hannes Reichert, Manuel Hetzel, Steven Schreck, Konrad Doll, Bernhard Sick

This addresses the issue of sensor-dependent object representation in projection-based sensors, such as LiDAR, which can lead to distorted physical and geometric properties due to variations in sensor resolution and field of view.

Instance Segmentation Semantic Segmentation

Multi-annotator Deep Learning: A Probabilistic Framework for Classification

1 code implementation5 Apr 2023 Marek Herde, Denis Huseljic, Bernhard Sick

Training standard deep neural networks leads to subpar performances in such multi-annotator supervised learning settings.

Classification

Space, Time, and Interaction: A Taxonomy of Corner Cases in Trajectory Datasets for Automated Driving

no code implementations17 Oct 2022 Kevin Rösch, Florian Heidecker, Julian Truetsch, Kamil Kowol, Clemens Schicktanz, Maarten Bieshaar, Bernhard Sick, Christoph Stiller

Based on these predictions - and additional contextual information such as the course of the road, (traffic) rules, and interaction with other road users - the highly automated vehicle (HAV) must be able to reliably and safely perform the task assigned to it, e. g., moving from point A to B.

A Review of Uncertainty Calibration in Pretrained Object Detectors

1 code implementation6 Oct 2022 Denis Huseljic, Marek Herde, Mehmet Muejde, Bernhard Sick

In the field of deep learning based computer vision, the development of deep object detection has led to unique paradigms (e. g., two-stage or set-based) and architectures (e. g., Faster-RCNN or DETR) which enable outstanding performance on challenging benchmark datasets.

Object object-detection +1

Task Embedding Temporal Convolution Networks for Transfer Learning Problems in Renewable Power Time-Series Forecast

no code implementations29 Apr 2022 Jens Schreiber, Stephan Vogt, Bernhard Sick

The proposed architecture significantly improves up to 25 percent for multi-task learning for power forecasts on the EuropeWindFarm and GermanSolarFarm dataset compared to the multi-layer perceptron approach.

Multi-Task Learning Time Series +2

Model Selection, Adaptation, and Combination for Transfer Learning in Wind and Photovoltaic Power Forecasts

no code implementations28 Apr 2022 Jens Schreiber, Bernhard Sick

Therefore, we adopt source models based on target data from different seasons and limit the amount of training data.

Model Selection Transfer Learning

Synthetic Photovoltaic and Wind Power Forecasting Data

no code implementations1 Apr 2022 Stephan Vogt, Jens Schreiber, Bernhard Sick

Since the synthetic time series are based exclusively on weather measurements, possible errors in the weather forecast are comparable to those in actual power data.

Multi-Task Learning Time Series +1

Design of Explainability Module with Experts in the Loop for Visualization and Dynamic Adjustment of Continual Learning

no code implementations14 Feb 2022 Yujiang He, Zhixin Huang, Bernhard Sick

With the help of this module, experts can be more confident in decision-making regarding anomaly filtering, dynamic adjustment of hyperparameters, data backup, etc.

Continual Learning Decision Making +1

A Survey on Cost Types, Interaction Schemes, and Annotator Performance Models in Selection Algorithms for Active Learning in Classification

no code implementations23 Sep 2021 Marek Herde, Denis Huseljic, Bernhard Sick, Adrian Calma

Therefore, we introduce a general real-world AL strategy as part of a learning cycle and use its elements, e. g., the query and annotator selection algorithm, to categorize about 60 real-world AL strategies.

Active Learning

Description of Corner Cases in Automated Driving: Goals and Challenges

no code implementations20 Sep 2021 Daniel Bogdoll, Jasmin Breitenstein, Florian Heidecker, Maarten Bieshaar, Bernhard Sick, Tim Fingscheidt, J. Marius Zöllner

Scaling the distribution of automated vehicles requires handling various unexpected and possibly dangerous situations, termed corner cases (CC).

Artificial intelligence for online characterization of ultrashort X-ray free-electron laser pulses

no code implementations31 Aug 2021 Kristina Dingel, Thorsten Otto, Lutz Marder, Lars Funke, Arne Held, Sara Savio, Andreas Hans, Gregor Hartmann, David Meier, Jens Viefhaus, Bernhard Sick, Arno Ehresmann, Markus Ilchen, Wolfram Helml

X-ray free-electron lasers (XFELs) as the world's brightest light sources provide ultrashort X-ray pulses with a duration typically in the order of femtoseconds.

Probabilistic Active Learning for Active Class Selection

no code implementations9 Aug 2021 Daniel Kottke, Georg Krempl, Marianne Stecklina, Cornelius Styp von Rekowski, Tim Sabsch, Tuan Pham Minh, Matthias Deliano, Myra Spiliopoulou, Bernhard Sick

In machine learning, active class selection (ACS) algorithms aim to actively select a class and ask the oracle to provide an instance for that class to optimize a classifier's performance while minimizing the number of requests.

Active Learning

Cyclist Trajectory Forecasts by Incorporation of Multi-View Video Information

no code implementations30 Jun 2021 Stefan Zernetsch, Oliver Trupp, Viktor Kress, Konrad Doll, Bernhard Sick

This article presents a novel approach to incorporate visual cues from video-data from a wide-angle stereo camera system mounted at an urban intersection into the forecast of cyclist trajectories.

Optical Flow Estimation

Pose and Semantic Map Based Probabilistic Forecast of Vulnerable Road Users' Trajectories

no code implementations4 Jun 2021 Viktor Kress, Fabian Jeske, Stefan Zernetsch, Konrad Doll, Bernhard Sick

We compare our method with an approach that provides forecasts in the form of Gaussian distributions and discuss the respective advantages and disadvantages.

Trajectory Forecasting

Cyclist Intention Detection: A Probabilistic Approach

no code implementations19 Apr 2021 Stefan Zernetsch, Hannes Reichert, Viktor Kress, Konrad Doll, Bernhard Sick

A basic movement detection based on motion history images (MHI) and a residual convolutional neural network (ResNet) are used to estimate probabilities for the current cyclist motion state.

AdaPT: Adaptable Particle Tracking for Spherical Microparticles in Lab on Chip Systems

no code implementations28 Jan 2021 Kristina Dingel, Rico Huhnstock, André Knie, Arno Ehresmann, Bernhard Sick

In the following, we distinguish between two sub-steps in particle tracking, namely the localization of particles in single images and the linking of the extracted particle positions of the subsequent frames into trajectories.

Data Analysis, Statistics and Probability

CLeaR: An Adaptive Continual Learning Framework for Regression Tasks

no code implementations4 Jan 2021 Yujiang He, Bernhard Sick

The second one is designed with data collected from European wind farms to evaluate the CLeaR framework's performance in a real-world application.

Continual Learning Incremental Learning +2

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

Off-the-shelf sensor vs. experimental radar -- How much resolution is necessary in automotive radar classification?

no code implementations9 Jun 2020 Nicolas Scheiner, Ole Schumann, Florian Kraus, Nils Appenrodt, Jürgen Dickmann, Bernhard Sick

Furthermore, the generalization capabilities of both data sets are evaluated and important comparison metrics for automotive radar object detection are discussed.

Autonomous Driving Clustering +4

Toward Optimal Probabilistic Active Learning Using a Bayesian Approach

1 code implementation2 Jun 2020 Daniel Kottke, Marek Herde, Christoph Sandrock, Denis Huseljic, Georg Krempl, Bernhard Sick

Gathering labeled data to train well-performing machine learning models is one of the critical challenges in many applications.

Active Learning

Extended Coopetitive Soft Gating Ensemble

no code implementations29 Apr 2020 Stephan Deist, Jens Schreiber, Maarten Bieshaar, Bernhard Sick

This article is about an extension of a recent ensemble method called Coopetitive Soft Gating Ensemble (CSGE) and its application on power forecasting as well as motion primitive forecasting of cyclists.

Emerging Relation Network and Task Embedding for Multi-Task Regression Problems

no code implementations29 Apr 2020 Jens Schreiber, Bernhard Sick

Results suggest that the ern is beneficial when tasks are only loosely related and the prediction problem is more non-linear.

Multi-Task Learning regression +3

Iterative Label Improvement: Robust Training by Confidence Based Filtering and Dataset Partitioning

1 code implementation7 Feb 2020 Christian Haase-Schütz, Rainer Stal, Heinz Hertlein, Bernhard Sick

To alleviate this issue, we propose a novel meta training and labelling scheme that is able to use inexpensive unlabelled data by taking advantage of the generalization power of deep neural networks.

Seeing Around Street Corners: Non-Line-of-Sight Detection and Tracking In-the-Wild Using Doppler Radar

1 code implementation CVPR 2020 Nicolas Scheiner, Florian Kraus, Fangyin Wei, Buu Phan, Fahim Mannan, Nils Appenrodt, Werner Ritter, Jürgen Dickmann, Klaus Dietmayer, Bernhard Sick, Felix Heide

In this work, we depart from visible-wavelength approaches and demonstrate detection, classification, and tracking of hidden objects in large-scale dynamic environments using Doppler radars that can be manufactured at low-cost in series production.

Temporal Sequences

Generative Adversarial Networks for Operational Scenario Planning of Renewable Energy Farms: A Study on Wind and Photovoltaic

no code implementations3 Jun 2019 Jens Schreiber, Maik Jessulat, Bernhard Sick

In these scenarios, operators examine temporal as well as spatial influences of different energy sources on the grid.

Influences in Forecast Errors for Wind and Photovoltaic Power: A Study on Machine Learning Models

no code implementations31 May 2019 Jens Schreiber, Artjom Buschin, Bernhard Sick

Despite the increasing importance of forecasts of renewable energy, current planning studies only address a general estimate of the forecast quality to be expected and selected forecast horizons.

BIG-bench Machine Learning

Automated Ground Truth Estimation For Automotive Radar Tracking Applications With Portable GNSS And IMU Devices

no code implementations28 May 2019 Nicolas Scheiner, Stefan Haag, Nils Appenrodt, Bharanidhar Duraisamy, Jürgen Dickmann, Martin Fritzsche, Bernhard Sick

The reference system allows to much more precisely generate real world radar data distributions of VRUs than compared to conventional methods.

Radar-based Feature Design and Multiclass Classification for Road User Recognition

no code implementations27 May 2019 Nicolas Scheiner, Nils Appenrodt, Jürgen Dickmann, Bernhard Sick

The classification of individual traffic participants is a complex task, especially for challenging scenarios with multiple road users or under bad weather conditions.

Binarization Classification +1

Collaborative Interactive Learning -- A clarification of terms and a differentiation from other research fields

no code implementations16 May 2019 Tom Hanika, Marek Herde, Jochen Kuhn, Jan Marco Leimeister, Paul Lukowicz, Sarah Oeste-Reiß, Albrecht Schmidt, Bernhard Sick, Gerd Stumme, Sven Tomforde, Katharina Anna Zweig

The field of collaborative interactive learning (CIL) aims at developing and investigating the technological foundations for a new generation of smart systems that support humans in their everyday life.

Active Learning

Limitations of Assessing Active Learning Performance at Runtime

no code implementations29 Jan 2019 Daniel Kottke, Jim Schellinger, Denis Huseljic, Bernhard Sick

Hence, it is not possible to reliably estimate the performance of the classification system during learning and it is difficult to decide when the system fulfills the quality requirements (stopping criteria).

Active Learning General Classification

Detecting Intentions of Vulnerable Road Users Based on Collective Intelligence

no code implementations11 Sep 2018 Maarten Bieshaar, Günther Reitberger, Stefan Zernetsch, Bernhard Sick, Erich Fuchs, Konrad Doll

Heterogeneous, open sets of agents (cooperating and interacting vehicles, infrastructure, e. g. cameras and laser scanners, and VRUs equipped with smart devices and body-worn sensors) exchange information forming a multi-modal sensor system with the goal to reliably and robustly detect VRUs and their intentions under consideration of real time requirements and uncertainties.

Activity Recognition Intent Detection

Quantifying the Influences on Probabilistic Wind Power Forecasts

no code implementations14 Aug 2018 Jens Schreiber, Bernhard Sick

Therefore, we examine the potential influences with techniques from the field of sensitivity analysis on three different black-box models to obtain insights into differences and similarities of these probabilistic models.

Starting Movement Detection of Cyclists Using Smart Devices

no code implementations8 Aug 2018 Maarten Bieshaar, Malte Depping, Jan Schneegans, Bernhard Sick

In near future, vulnerable road users (VRUs) such as cyclists and pedestrians will be equipped with smart devices and wearables which are capable to communicate with intelligent vehicles and other traffic participants.

feature selection Human Activity Recognition

Coopetitive Soft Gating Ensemble

no code implementations3 Jul 2018 Stephan Deist, Maarten Bieshaar, Jens Schreiber, Andre Gensler, Bernhard Sick

In this article, we propose the Coopetititve Soft Gating Ensemble or CSGE for general machine learning tasks and interwoven systems.

BIG-bench Machine Learning

A Multi-Scheme Ensemble Using Coopetitive Soft-Gating With Application to Power Forecasting for Renewable Energy Generation

no code implementations16 Mar 2018 André Gensler, Bernhard Sick

The proposed algorithm combines the ideas of multiple ensemble paradigms (power forecasting model ensemble, weather forecasting model ensemble, and lagged ensemble) in a hierarchical structure.

Weather Forecasting

Cooperative Starting Movement Detection of Cyclists Using Convolutional Neural Networks and a Boosted Stacking Ensemble

no code implementations9 Mar 2018 Maarten Bieshaar, Stefan Zernetsch, Andreas Hubert, Bernhard Sick, Konrad Doll

In future, vehicles and other traffic participants will be interconnected and equipped with various types of sensors, allowing for cooperation on different levels, such as situation prediction or intention detection.

Intentions of Vulnerable Road Users - Detection and Forecasting by Means of Machine Learning

no code implementations9 Mar 2018 Michael Goldhammer, Sebastian Köhler, Stefan Zernetsch, Konrad Doll, Bernhard Sick, Klaus Dietmayer

Furthermore, the architecture is used to evaluate motion-specific physical models for starting and stopping and video-based pedestrian motion classification.

BIG-bench Machine Learning General Classification +1

Early Start Intention Detection of Cyclists Using Motion History Images and a Deep Residual Network

no code implementations6 Mar 2018 Stefan Zernetsch, Viktor Kress, Bernhard Sick, Konrad Doll

The method uses a deep Convolutional Neural Network (CNN) with a residual network architecture (ResNet), which is commonly used in image classification and detection tasks.

General Classification Image Classification

Cooperative Tracking of Cyclists Based on Smart Devices and Infrastructure

no code implementations6 Mar 2018 Günther Reitberger, Stefan Zernetsch, Maarten Bieshaar, Bernhard Sick, Konrad Doll, Erich Fuchs

We show in numerical evaluations on scenes where cyclists are starting or turning right that the cooperation leads to an improvement in both the ability to keep track of a cyclist and the accuracy of the track particularly when it comes to occlusions in the visual system.

Self-Adaptation of Activity Recognition Systems to New Sensors

no code implementations30 Jan 2017 David Bannach, Martin Jänicke, Vitor F. Rey, Sven Tomforde, Bernhard Sick, Paul Lukowicz

Traditional activity recognition systems work on the basis of training, taking a fixed set of sensors into account.

Activity Recognition Clustering

Organic Computing in the Spotlight

no code implementations27 Jan 2017 Sven Tomforde, Bernhard Sick, Christian Müller-Schloer

Organic Computing is an initiative in the field of systems engineering that proposed to make use of concepts such as self-adaptation and self-organisation to increase the robustness of technical systems.

Semi-Supervised Active Learning for Support Vector Machines: A Novel Approach that Exploits Structure Information in Data

no code implementations13 Oct 2016 Tobias Reitmaier, Adrian Calma, Bernhard Sick

An effective approach to reduce these costs is to apply any kind of active learning (AL) methods, as AL controls the training process of a classifier by specific querying individual data points (samples), which are then labeled (e. g., provided with class memberships) by a domain expert.

Active Learning General Classification

Variational Bayesian Inference for Hidden Markov Models With Multivariate Gaussian Output Distributions

no code implementations27 May 2016 Christian Gruhl, Bernhard Sick

Hidden Markov Models (HMM) have been used for several years in many time series analysis or pattern recognitions tasks.

Bayesian Inference Time Series +1

A New Vision of Collaborative Active Learning

no code implementations1 Apr 2015 Adrian Calma, Tobias Reitmaier, Bernhard Sick, Paul Lukowicz, Mark Embrechts

Active learning (AL) is a learning paradigm where an active learner has to train a model (e. g., a classifier) which is in principal trained in a supervised way, but in AL it has to be done by means of a data set with initially unlabeled samples.

Active Learning

The Responsibility Weighted Mahalanobis Kernel for Semi-Supervised Training of Support Vector Machines for Classification

no code implementations13 Feb 2015 Tobias Reitmaier, Bernhard Sick

We will see that this kernel outperforms the RBF kernel and other kernels capturing structure in data (such as the LAP kernel in Laplacian SVM) in many applications where partially labeled data are available, i. e., for semi-supervised training of SVM.

General Classification

Cannot find the paper you are looking for? You can Submit a new open access paper.