Papers by Jens-Olof Lindh
This paper suggests that the physical, information, cognitive and social domain layers of warfare... more This paper suggests that the physical, information, cognitive and social domain layers of warfare should be extended to also include an ecological layer. We compare the extended domain-model to the four-layered architecture for open computational systems (OCS). Implementations of (i) the interaction platform Service oriented layered architecture for communicating entities (SOLACE) and (ii) the Distributed interaction system for complex entity relation networks (DISCERN) are introduced. The demonstrator system Trustworthy and sustainable operations in marine environments (TWOSOME) shows that it is possible to create and control distributed systems that are exposed the evolutionary behaviors of an ecological environment. The relevance of TWOSOME to Network-Centric Warfare is supported by a comparison of the OCS architecture to the domains of warfare. We also argue that systems based on the OCS architecture are both compliant with requirements on essential operational capabilities of network enabled forces and conforming to the Global Information Grid.
Analysing Traffic Safty from a Case-Based Perspective
Autonomous Intelligent Systems, Nov 16, 2021
A research arena (WARA-PS) for sensing, data fusion, user interaction, planning and control of co... more A research arena (WARA-PS) for sensing, data fusion, user interaction, planning and control of collaborative autonomous aerial and surface vehicles in public safety applications is presented. The objective is to demonstrate scientific discoveries and to generate new directions for future research on autonomous systems for societal challenges. The enabler is a computational infrastructure with a core system architecture for industrial and academic collaboration. This includes a control and command system together with a framework for planning and executing tasks for unmanned surface vehicles and aerial vehicles. The motivating application for the demonstration is marine search and rescue operations. A state-of-art delegation framework for the mission planning together with three specific applications is also presented. The first one concerns model predictive control for cooperative rendezvous of autonomous unmanned aerial and surface vehicles. The second project is about learning to make safe real-time decisions under uncertainty for autonomous vehicles, and the third one is on robust terrain-aided navigation through sensor fusion and virtual reality tele-operation to support a GPS-free positioning system in marine environments. The research results have been experimentally evaluated and demonstrated to industry and public sector audiences at a marine test facility. It would be most difficult to do experiments on this large scale without the WARA-PS research arena. Furthermore, these demonstrator activities have resulted in effective research dissemination with high public visibility, business impact and new research collaborations between academia and industry.
Analysing traffic safety from a case-based reasoning perspective
Univ., 1997
This thesis contains a study of how to use partial matching and qualitative reasoning methods to ... more This thesis contains a study of how to use partial matching and qualitative reasoning methods to provide computer-based support for assisting municipal traffic engineers in finding solutions to traffic safety problems. The study was motivated by needs in the application domain, where it was conjectured that decisions regarding accident prevention measures could benefit from easy access to previous relevant experience. The specific domain chosen for the study was urban intersections and conflicts between protected and unprotected road users. Case-based reasoning, CBR, offers a way to represent previous relevant experience, which can be retrieved and used by analogical reasoning. In the study, a series of experiments was performed in order to study the utility of the CBR approach in the traffic safety domain and to assess the feasibility of building systems assisting a traffic engineer in the process of coming up with unconventional solutions based on analogies with other cases. The study indicates that a useful model for representing cases may involve three different structures, namely a functional abstraction hierarchy, a physical aggregation hierarchy and a casual state-transformation accident model. The purpose of these models is to allow partial matching between a posed question (current safety problem) and stored cases (previous experience). The thesis accounts for the experience from test implementations using real accident reports and describes the proposed approach to represent safety-related cases based on system and accident theory. (A)
Blekinge Institute of Technology, 2006
Kockums stands for leading-edge, world-class naval technology-above and below the surface. Kockum... more Kockums stands for leading-edge, world-class naval technology-above and below the surface. Kockums design, build and maintain submarines and naval surface vessels that incorporate the most advanced stealth technology. Kockums is based in Malmö and Karlskrona, where all production facilities are. The shipyard at Karlskrona was founded already in 1679. Kockums is part of ThyssenKrupp Marine Systems. The opinions and statements put forward in this thesis are those of the author, and are not in any way to be taken as official statements of neither Kockums AB nor ThyssenKrupp Marine Systems. v TWOSOME is highly relevant as an NCW demonstrator. Observations of its behaviour indicates that significant efforts in modelling domains and systems are needed if we are to cope with the processes of battlespace monitoring and management in an open, context-dependent NCW-enabled theater. Once the network problem is solved, the networking problem will remain.
Analysing Traffic Safety from a Case-Based Reasoning Perspective
This thesis contains a study of how to use partial matching and qualitative reasoning methods to ... more This thesis contains a study of how to use partial matching and qualitative reasoning methods to provide computer-based support for assisting municipal traffic engineers in finding solutions to traffic safety problems. The study was motivated by needs in the application domain, where it was conjectured that decisions regarding accident prevention measures could benefit from easy access to previous relevant experience. The specific domain chosen for the study was urban intersections and conflicts between protected and unprotected road users. Case-based reasoning, CBR, offers a way to represent previous relevant experience, which can be retrieved and used by analogical reasoning. In the study, a series of experiments was performed in order to study the utility of the CBR approach in the traffic safety domain and to assess the feasibility of building systems assisting a traffic engineer in the process of coming up with unconventional solutions based on analogies with other cases. The s...
Analysing Traffic Safty from a Case-Based Perspective
Based on explorative empirical studies, this paper suggests that data coherence is a necessary bu... more Based on explorative empirical studies, this paper suggests that data coherence is a necessary but not sufficient prerequisite for shared information and shared situation awareness in cooperating but physically distributed asynchronous cognitive systems (DAC-systems). A temporal model of DAC system interaction has been developed and a corresponding method for post operations analysis of temporal data has been tested. Results show that interaction between nodes shall occur within a temporal interval, if internal coherence and external relevance shall be maintained: We call this the coherence interval. Loss of coherence (decoherence) may be caused by overuse of available means for communication and/or lack of common domains and/or technologies. Also, DAC systems exhibit an observability horizon, at which attempts to increase control by increasing the amount of observations in fact cause a loss of control. We call this the control paradox. It also appears that our findings about DAC systems correlate well with aspects such as information-time vectors, relative simultaneity and the information-system uncertainty principle, normally discussed in modern physics. The coherence interval can also be used to indicate if cooperating groups are able to share a common and relevant dataset.
Autonomous Intelligent Systems, 2021
A research arena (WARA-PS) for sensing, data fusion, user interaction, planning and control of co... more A research arena (WARA-PS) for sensing, data fusion, user interaction, planning and control of collaborative autonomous aerial and surface vehicles in public safety applications is presented. The objective is to demonstrate scientific discoveries and to generate new directions for future research on autonomous systems for societal challenges. The enabler is a computational infrastructure with a core system architecture for industrial and academic collaboration. This includes a control and command system together with a framework for planning and executing tasks for unmanned surface vehicles and aerial vehicles. The motivating application for the demonstration is marine search and rescue operations. A state-of-art delegation framework for the mission planning together with three specific applications is also presented. The first one concerns model predictive control for cooperative rendezvous of autonomous unmanned aerial and surface vehicles. The second project is about learning to ...
Citeseer
Kockums stands for leading-edge, world-class naval technology-above and below the surface. Kockum... more Kockums stands for leading-edge, world-class naval technology-above and below the surface. Kockums design, build and maintain submarines and naval surface vessels that incorporate the most advanced stealth technology. Kockums is based in Malmö and Karlskrona, where all production facilities are. The shipyard at Karlskrona was founded already in 1679. Kockums is part of ThyssenKrupp Marine Systems. The opinions and statements put forward in this thesis are those of the author, and are not in any way to be taken as official statements of neither Kockums AB nor ThyssenKrupp Marine Systems. v TWOSOME is highly relevant as an NCW demonstrator. Observations of its behaviour indicates that significant efforts in modelling domains and systems are needed if we are to cope with the processes of battlespace monitoring and management in an open, context-dependent NCW-enabled theater. Once the network problem is solved, the networking problem will remain.
This paper suggests that the physical, information, cognitive and social domain layers of warfare... more This paper suggests that the physical, information, cognitive and social domain layers of warfare should be extended to also include an ecological layer. We compare the extended domain-model to the four-layered architecture for open computational systems (OCS). Implementations of (i) the interaction platform Service oriented layered architecture for communicating entities (SOLACE) and (ii) the Distributed interaction system for complex entity relation networks (DISCERN) are introduced. The demonstrator system Trustworthy and sustainable operations in marine environments (TWOSOME) shows that it is possible to create and control distributed systems that are exposed the evolutionary behaviors of an ecological environment. The relevance of TWOSOME to Network-Centric Warfare is supported by a comparison of the OCS architecture to the domains of warfare. We also argue that systems based on the OCS architecture are both compliant with requirements on essential operational capabilities of n...
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Papers by Jens-Olof Lindh