FG Agententechnologien in betrieblichen Anwendungen und der Telekommunikation (AOT)

37 Items

Recent Submissions
User Interaction Templates for the Design of Lifelogging Systems

Hopfgartner, Frank ; Yang, Yang ; Zhou, Lijuan Marissa ; Gurrin, Cathal (2013)

A variety of life-tracking devices are being created to give opportunity to track our daily lives accurately and automatically through the application of sensing technologies. Technology allows us to automatically and passively record life activities in previously unimaginable detail, in a process called lifelogging. Captured materials may include text, photos/video, audio, location, Bluetooth ...

Detecting Violent Content in Hollywood Movies and User-generated Videos

Acar, Esra ; Irrgang, Melanie ; Maniry, Dominique ; Hopfgartner, Frank (2015-01-15)

Detecting violent scenes in videos is an important content understanding functionality, e.g., for providing automated youth protection services. The key issues in designing violence detection algorithms are the choice of discriminative features and learning effective models. We employ low and mid-level audio-visual features and evaluate their discriminative power within the context of the Media...

Gamification of Workplace Activities

Meder, Michael ; Jain, Brijnesh Johannes ; Plumbaum, Till ; Hopfgartner, Frank (2015-01-15)

Gamification—taking game design patterns and principles out of video games to apply them in non-game environments has become a popular idea in the last 4 years. It has also successfully been applied to workplace environments, but it still remains unclear how employees really feel about the introduction of a gamified system. We address this matter by comparing the employees’ subjective perceptio...

Health Assistance for Immigrants

Plumbaum, Till ; Klein-Ellinghaus, Funda ; Reeske, Anna ; Pelz, Kristin ; Hopfgartner, Frank (2015-01-15)

Our personal health should be one of our main concerns, but unfortunately, due to modern lifestyle, far too many people ignore their own well-being. Consequently, methodologies need to be developed that assist us in living a healthier life. In this chapter, we present a health assistance system for immigrants. The system consists of two parts: A health information system that allows users to se...

Multimedia Retrieval and Adaptive Systems

Frank, Hopfgartner (2013-11)

null

Novel hands-free interaction techniques based on the software switch approach for computer access with head movements

Esiyok, Cagdas ; Askin, Ayhan ; Tosun, Aliye ; Albayrak, Sahin (2020-07-08)

Head-operated computer accessibility tools (CATs) are useful solutions for the ones with complete head control; but when it comes to people with only reduced head control, computer access becomes a very challenging task since the users depend on a single head-gesture like a head nod or a head tilt to interact with a computer. It is obvious that any new interaction technique based on a single he...

When algorithm selection meets Bi-linear Learning to Rank: accuracy and inference time trade off with candidates expansion

Yuan, Jing ; Geissler, Christian ; Shao, Weijia ; Lommatzsch, Andreas ; Jain, Brijnesh (2020-10-09)

Algorithm selection (AS) tasks are dedicated to find the optimal algorithm for an unseen problem instance. With the knowledge of problem instances’ meta-features and algorithms’ landmark performances, Machine Learning (ML) approaches are applied to solve AS problems. However, the standard training process of benchmark ML approaches in AS either needs to train the models specifically for every a...

PeriSense: Ring-based multi-finger gesture interaction utilizing capacitive proximity sensing

Wilhelm, Mathias ; Krakowczyk, Daniel ; Albayrak, Sahin (2020-07-17)

Rings are widely accepted wearables for gesture interaction. However, most rings can sense only the motion of one finger or the whole hand. We present PeriSense, a ring-shaped interaction device enabling multi-finger gesture interaction. Gestures of the finger wearing ring and its adjacent fingers are sensed by measuring capacitive proximity between electrodes and human skin. Our main contribut...

Social Cobots: Anticipatory Decision-Making for Collaborative Robots with Extended Human Adaptation

Görür, Orhan Can (2020)

One of the biggest concerns about collaborative robots (cobots) is their ability to adapt during their interactions with humans, which typically exhibit an immense diversity. We present an autonomous framework as a robot's real-time decision-making mechanism to anticipate and adapt to a great deal of human characteristics and behaviors, including human errors, toward a fluent and personalized h...

Very short-term power system frequency forecasting

Yurdakul, Ogun ; Eser, Fatih ; Sivrikaya, Fikret ; Albayrak, Sahin (2020-07-30)

Power system frequency plays a pivotal role in ensuring the security, adequacy, and integrity of a power system. While some frequency response services are automatically delivered to maintain the frequency within the stipulated limits, certain cases may require that system operators (SOs) manually intervene-against the clock-to take the necessary preventive or corrective actions. As such, SOs c...

Transmission rate sampling and selection for reliable wireless multicast

Geithner, Thomas ; Sivrikaya, Fikret (2020-09-30)

The multicast communication concept offers a scalable and efficient method for many classes of applications; however, its potential remains largely unexploited when it comes to link-layer multicasting in wireless local area networks. The fundamental lacking feature for this is a transmission rate control mechanism that offers higher transmission performance and lower channel utilization, while ...

Adaptive quality of context optimization in the Internet of Things: models and methods

Eryilmaz-Sigwarth, Elif (2020)

The Internet of Things (IoT) is a basis of the Internet of the future and will cover billions of intelligent objects being able to sense, actuate, and communicate with each other. Recent advances in the Internet of Things (IoT) provides rich opportunities for the development of more flexible context-aware solutions. Applications can benefit from those flexible mechanisms by adapting to change i...

Self-adaptive and self-organised planning and decision-making for multi-robot systems

Hrabia, Christopher-Eyk (2019)

Robots are leaving the friendly, well-structured world of automation and are facing the challenges of a dynamic world. The uncertain conditions in the dynamic world call for a high degree of robustness and adaptivity for individual robots as well as interactions between multiple robots and other system entities. The uncertainty makes it difficult for designers and engineers to anticipate all co...

SITbench 1.0: A Novel Switch-Based Interaction Technique Benchmark

Esiyok, Cagdas ; Albayrak, Sahin (2019-08-18)

Evaluation process of a switch-based interaction technique (SIT) requires an interdisciplinary team effort and takes a considerable amount of time. Collecting subjective evaluation data from the users is a very common approach, but the subjective evaluation data alone might be manipulated and unreliable for comparing performances in many cases. Thus, therapists generally cannot succeed in deter...

Enhanced Rate Control for Wireless Reliable Multicast (EWRiM)

Geithner, Thomas (2019-06-19)

While the concept of multicast communication offers a scalable and efficient method for many classes of applications in general, its potential remains largely unexploited when it comes to 802.11 networks. The fundamental lacking feature for this is a transmission rate control mechanism that offers higher transmission performance and lower channel utilization. Another challenging aspect is ensur...

Towards adaptive multi-robot systems: self-organization and self-adaptation

Hrabia, Christopher-Eyk ; Lützenberger, Marco ; Albayrak, Sahin (2018-10-04)

The development of complex systems ensembles that operate in uncertain environments is a major challenge. The reason for this is that system designers are not able to fully specify the system during specification and development and before it is being deployed. Natural swarm systems enjoy similar characteristics, yet, being self-adaptive and being able to self-organize, these systems show benef...

Modelling and integrating personality as affective phenomenon in agent-based systems

Ahrndt, Sebastian (2019)

A team member's ability to predict the actions of other team members influences the efficiency of teamwork. This is named predictability and one of the challenges associated with the task of making agents team player in joint human-agent activities. I approach this problem focusing on personality as a predictor of human behaviour and following a combination of theory and data-driven approaches...

EffFeu Project: Towards Mission-Guided Application of Drones in Safety and Security Environments

Hrabia, Christopher-Eyk ; Hessler, Axel ; Xu, Yuan ; Seibert, Jacob ; Brehmer, Jan ; Albayrak, Sahin (2019-02-25)

The number of unmanned aerial system (UAS) applications for supporting rescue forces is growing in recent years. Nevertheless, the analysis of sensed information and control of unmanned aerial vehicle (UAV) creates an enormous psychological and emotional load for the involved humans especially in critical and hectic situations. The introduced research project EffFeu (Efficient Operation of Unma...

Application-level Simulation for Network Security

Schmidt, Stephan ; Bye, Rainer ; Chinnow, Joël ; Bsufka, Karsten ; Camtepe, Ahmet ; Albayrak, Sahin (2010)

NeSSi (network security simulator) is a novel network simulation tool which incorporates a variety of features relevant to network security distinguishing it from general-purpose network simulators. Its capabilities such as profile-based automated attack generation, traffic analysis and support for detection algorithm plug-ins allow it to be used for security research and evaluation purposes. N...

Distributed enterprise search using software agents

Gunadi, Erwin ; Meder, Michael ; Plumbaum, Till ; Scheel, Christian ; Hopfgartner, Frank ; Albayrak, Sahin (2014)

In this paper we introduce a distributed information retrieval system using agent-based technology. In this multi-agent system, each agent has its own specific task and can be used to handle a specific document repository. The system is designed to automatically comply with access restriction rules that are normally enforced in companies. It is used in the administration offices of the German c...