Now showing items 23-42 of 82

    • Darwinian embodied evolution of the learning ability for survival 

      Elfwing, Stefan; Uchibe, Eiji; Doya, Kenji; Christensen, Henrik (Georgia Institute of TechnologySageInternational Society for Adaptive Behavior, 2007)
      In this article we propose a framework for performing embodied evolution with a limited number of robots, by utilizing time-sharing in subpopulations of virtual agents hosted in each robot. Within this framework, we explore ...
    • Design of a Control Strategy for Teleoperation of a Platform with Significant Dynamics 

      Bratt, Mattias; Smith, Christian; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-10)
      A teleoperation system for controlling a robot with fast dynamics over the Internet has been constructed. It employs a predictive control structure with an accurate dynamic model of the robot to overcome problems caused ...
    • Design of an Office-Guide Robot for Social Interaction Studies 

      Pacchierotti, Elena; Christensen, Henrik I.; Jensfelt, Patric (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-10)
      In this paper, the design of an office-guide robot for social interaction studies is presented. We are interested in studying the impact of passage behaviours in casual encounters. While the system offers assistance in ...
    • Detecting region transitions for human-augmented mapping 

      Christensen, Henrik I.; Topp, Elin A. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2010-08)
      In this paper, we describe a concise method for the feature-based representation of regions in an indoor environment and show how it can also be applied for door-passage-independent detection of transitions between ...
    • Detecting structural ambiguities and transistions during a guided tour 

      Topp, Elin A.; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2008-05)
      Service robots designed for domestic settings need to navigate in an environment that they have to share with their users. Thus, they have to be able to report their current state and whereabouts in a way that is ...
    • A Discriminative Approach to Robust Visual Place Recognition 

      Pronobis, A.; Caputo, B.; Jensfelt, Patric; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-10)
      An important competence for a mobile robot system is the ability to localize and perform context interpretation. This is required to perform basic navigation and to facilitate local specific services. Usually localization ...
    • Domestic robot ecology - an initial framework to unpack long-term acceptance of robots at home 

      Sung, Ja-Young; Grinter, Rebecca E.; Christensen, Henrik (Georgia Institute of TechnologySpringer, 2010)
      It has been recognized that long-term effects exist in the interaction with robotic technologies. Despite this recognition, we still know little about how the temporal effects are associated with domestic robots. To bridge ...
    • Dynamic, cooperative multi-robot pa trolling with a team of UAVs 

      Pippin, Charles, E.; Christensen, Henrik I.; Weiss, Lora G. (Georgia Institute of TechnologySociety of Photo-Optical Instrumentation Engineers (SPIE), 2013)
      The multi-robot patrolling task has practical relevance in surveillance, search and rescue, and security applications. In this task, a team of robots must repeatedly visit areas in the environment, minimizing the time ...
    • Effects of sensory precision on mobile robot localization and mapping 

      Rogers, John G.; Trevor, Alexander J. B.; Nieto-Granda, Carlos; Cunningham, Alexander; Paluri, Manohar; Michael, Nathan; Dellaert, Frank; Christensen, Henrik I.; Kumar, Vijay (Georgia Institute of Technology, 2010-12)
      This paper will explore the relationship between sensory accuracy and Simultaneous Localization and Mapping (SLAM) performance. As inexpensive robots are developed with commodity components, the relationship between ...
    • European Robot Symposium - 2006 

      Christensen, Henrik I.; Georgia Institute of Technology. College of Computing; Georgia Institute of Technology. Center for Robotics and Intelligent Machines (Georgia Institute of TechnologySpringer Verlag, 2006-03)
    • Evaluation of Passing Distance for Social Robots 

      Pacchierotti, Elena; Christensen, Henrik I.; Jensfelt, Patric (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-09)
      Casual encounters with mobile robots for nonexperts can be a challenge due to lack of an interaction model. The present work is based on the rules from proxemics which are used to design a passing strategy. In narrow ...
    • Evolutionary Development of Hierarchical Learning Structures 

      Elfwing, Stefan; Uchibe, Eiji; Doya, Kenji; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-04)
      Hierarchical reinforcement learning (RL) algorithms can learn a policy faster than standard RL algorithms. However, the applicability of hierarchical RL algorithms is limited by the fact that the task decomposition has ...
    • Exploiting Distinguishable Image Features in Robotic Mapping and Localization 

      Jensfelt, Patric; Folkesson, John; Kragic, Danica; Christensen, Henrik I. (Georgia Institute of TechnologySpringer Verlag, 2006-03)
      Simultaneous localization and mapping (SLAM) is an important research area in robotics. Lately, systems that use a single bearing-only sensors have received significant attention and the use of visual sensors have been ...
    • Feature-based mapping with grounded landmark and place labels 

      Trevor, Alexander J. B.; Rogers, John G.; Nieto-Granda, Carlos; Christensen, Henrik I. (Georgia Institute of Technology, 2011-06)
      Service robots can benefit from maps that support their tasks and facilitate communication with humans. For efficient interaction, it is practical to be able to reference structures and objects in the environment, e.g. ...
    • From sensors to human spatial concepts: An annotated data set 

      Zivkovic, Zoran; Booij, Olaf; Kröse, Ben; Topp, Elin A.; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2008-03)
      An annotated data set is presented meant to help researchers in developing, evaluating, and comparing various approaches in robotics for building space representations appropriate for communicating with humans. The data ...
    • Graphical SLAM for Outdoor Applications 

      Folkesson, John; Christensen, Henrik I. (Georgia Institute of TechnologyJohn Wiley & Sons, 2007-02)
      Application of SLAM outdoors is challenged by complexity, handling of non-linearities and flexible integration of a diverse set of features. A graphical approach to SLAM is introduced that enables flexible data-association. ...
    • Housewives or technophiles?: understanding domestic robot owners 

      Sung, Ja-Young; Grinter, Rebecca E.; Christensen, Henrik; Guo, Lan (Georgia Institute of TechnologyAssociation for Computing Machinery, 2008-03)
      Despite the growing body of Human-Robot Interaction (HRI) research focused on domestic robots, surprisingly little is known about the demographic profile of robot owners and their influence on usage patterns. In this paper, ...
    • Incentive based cooperation in multi-agent auctions 

      Pippin, Charles, E.; Christensen, Henrik I. (Georgia Institute of TechnologyAssociation for the Advancement of Artificial Intelligence, 2012-03)
      Market or auction based algorithms offer effective methods for de-centralized task assignment in multi-agent teams. Typically there is an implicit assumption that agents are willing to cooperate and can be trusted to perform ...
    • Information-based Reduced Landmark SLAM 

      Choudhary, Siddharth; Indelman, Vadim; Christensen, Henrik I.; Dellaert, Frank (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2015-05)
      In this paper, we present an information-based approach to select a reduced number of landmarks and poses for a robot to localize itself and simultaneously build an accurate map. We develop an information theoretic ...
    • International Symposium on Intelligent Autonomous Systems - IAS-11 

      Christensen, Henrik I.; Groen, F.; Petreu, E.; Georgia Institute of Technology. College of Computing; Georgia Institute of Technology. Center for Robotics and Intelligent Machines (Georgia Institute of TechnologyIOS Press, 2010)