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IEEE Transactions on Systems, Man, and Cybernetics

Issue 5 • Date Sep/Oct 1991

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Displaying Results 1 - 25 of 36
  • Coalitional fairness and distortion of utilities

    Publication Year: 1991, Page(s):1295 - 1298
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The author considers the noncooperative game with strategies consisting of utility functions and whose outcomes are coalitionally fair solutions for the case of a finite number of agents who wish to divide a finite number of commodities. It is shown that for such a game any equal-income competitive equilibrium allocation for the true utilities is a Nash equilibrium outcome View full abstract»

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  • Approximating discrete probability distributions with decomposable models

    Publication Year: 1991, Page(s):1287 - 1294
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    A heuristic procedure is presented for approximating an n-dimensional discrete probability distribution with a decomposable model of a given complexity. It is shown that, without loss of generality, the search space can be restricted to a suitable subclass of decomposable models, whose members are called elementary models. The selected elementary model is constructed in an incremental man... View full abstract»

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  • Decision fusion strategies in multisensor environments

    Publication Year: 1991, Page(s):1140 - 1154
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    Efficient decision fusion strategies for deriving optimal decisions in multisensor target recognition/tracking environments are analyzed. The problem is viewed as one of parallel fusion of the individual independent decisions with a recursive structure that permits enhancement of the reliability of the fused decision. Instead of a voting-based fusion approach, this recursive structure can be combi... View full abstract»

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  • A self-organizing binary decision tree for incrementally defined rule-based systems

    Publication Year: 1991, Page(s):1231 - 1238
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    An adaptive self-organizing concurrent system (ASOCS) model is presented for massively parallel processing of incrementally defined rule-based systems in such areas as adaptive logic, robotics, logical inference, and dynamic control. An ASOCS is an adaptive network composed of many simple computing elements operating asynchronously and in parallel. The authors focus on adaptive algorithm 3 (AA3) a... View full abstract»

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  • An algorithm for point clustering and grid generation

    Publication Year: 1991, Page(s):1278 - 1286
    Cited by:  Papers (119)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    A special-purpose point clustering algorithm is described, and its application to automatic grid generation, a technique used to solve partial differential equations, is considered. Extensions of techniques common in computer vision and pattern recognition literature are used to partition points into a set of enclosing rectangles. Examples from 2-D calculations are shown, but the algorithm general... View full abstract»

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  • Multitarget motion analysis in a DSN

    Publication Year: 1991, Page(s):1125 - 1139
    Cited by:  Papers (24)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1080 KB)

    The data association problem in multiple target bearings-only motion analysis is considered. The measurements are target bearings obtained from passive sonars in a distributed sensor network. These measurements, after being transmitted to a processing center, are used to estimate the initial states of targets. The overall problem is formulated using the maximum likelihood principle. A two-step ite... View full abstract»

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  • Multisensor data fusion and decision support for airborne target identification

    Publication Year: 1991, Page(s):1224 - 1230
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A knowledge-based approach and a reasoning system for multisensor data fusion is presented. The scenario taken for the example is an air-land battlefield situation. A data fusion system obtains data from a variety of sensors. A Dempster-Shafer approach to representing and combining data is found appropriate for combining uncertain information from these disparate sensor sources at different levels... View full abstract»

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  • Isthmus critical points for solving jigsaw puzzles in computer vision

    Publication Year: 1991, Page(s):1271 - 1278
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    A computer vision system that can assemble canonical jigsaw puzzles is described. The most novel aspect of this system is that the methodology derives a new set of critical points that define a feature that can be used in matching partial boundaries (or contours) of planar regions. This global feature, called an isthmus, can be efficiently and reliably computed from the Euclidean skeleton or media... View full abstract»

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  • Direction finding: a signal subspace approach

    Publication Year: 1991, Page(s):1115 - 1124
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    The classical direction-finding problem is concerned with the task of detecting and estimating the directions from which multiple energy wavefronts impinge on an array of sensors. The problem is formulated in the signal subspace, leading to a number of benefits, chief among which is the ability to resolve closely spaced coherent sources. In order to realize this potential, however, a parametric op... View full abstract»

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  • Robotic learning from distributed sensory sources

    Publication Year: 1991, Page(s):1216 - 1223
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    Recent work toward the development of low-complexity, sensor-based inferencing methods to serve as the initial links of incremental robotic learning systems is described. A multimodal learning approach is proposed in which distributed sensory sources are used to both trigger the observation of and perceive relevant learning instances in a human-robot synergistic framework. Three components of the ... View full abstract»

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  • Fault-tolerant reconfigurable architecture for robot kinematics and dynamics computations

    Publication Year: 1991, Page(s):983 - 999
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1448 KB)

    Efficient parallel algorithms for computing the kinematics, dynamics, and Jacobian of manipulators and their corresponding inverses are discussed and analyzed, and their characteristics are identified based on the type and degree of parallelism, uniformity of the operations, fundamental operations, data dependencies, and communication requirements. Most of the algorithms for robotic computations p... View full abstract»

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  • Partial global planning: a coordination framework for distributed hypothesis formation

    Publication Year: 1991, Page(s):1167 - 1183
    Cited by:  Papers (64)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1748 KB)

    Partial global planning is used to provide a framework for coordinating multiple AI systems that are cooperating in a distributed sensor network. By combining a variety of coordination techniques into a single, unifying framework, partial global planning enables separate AI systems to reason about their roles and responsibilities as part of group problem solving, and to modify their planned proces... View full abstract»

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  • S-TRAINER: script based reasoning for mission assessment

    Publication Year: 1991, Page(s):1243 - 1251
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1272 KB)

    The design and implementation of script-based reasoning techniques integrated into a rule-based diagnoser for the purpose of debriefing air force pilots who have completed a bomber training mission are reported. The system was developed on a Symbolics Lisp Machine using Flavors and has the capability of reasoning about the tactical situations and providing plausible explanations of these activitie... View full abstract»

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  • Direction of arrival estimation using artificial neural networks

    Publication Year: 1991, Page(s):1192 - 1201
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    The maximum likelihood estimator is the optimal estimator of the direction of sources, but it requires the minimization of a complex, multimodal, multidimensional cost function. A neural optimization procedure is presented that does not require an initial estimate of the direction of the sources and offers the potential of real-time solutions to the direction of arrival problem by utilizing the fa... View full abstract»

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  • Entropy: a new definition and its applications

    Publication Year: 1991, Page(s):1260 - 1270
    Cited by:  Papers (135)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Shannon's definition of entropy is critically examined and a new definition of classical entropy based on the exponential behavior of information gain is proposed along with its justification. The concept is extended to defining the global, local, and conditional entropy of a gray-level image. Based on these definitions four algorithms for object extraction are developed. One of these algorithms u... View full abstract»

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  • Optimization of detection networks. I. Tandem structures

    Publication Year: 1991, Page(s):1044 - 1059
    Cited by:  Papers (47)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1172 KB)

    A distributed binary detection problem with binary communications is considered, wherein the nodes (sensors and decision-makers) of the system are organized in a series configuration. It is shown that this problem can be reformulated as a deterministic multistage nonlinear optimal control problem. The necessary and sufficient conditions of optimality using Bayes' risk as the optimization criterion... View full abstract»

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  • Asymptotic error probability expressions for multihypothesis testing using multisensor data

    Publication Year: 1991, Page(s):1101 - 1114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (836 KB)

    Existing upper bounds to the error probability in testing between m>2 hypotheses, and H. Chernoff's (1952) asymptotically correct error probability expression for m=2 hypotheses, as the number of observations n→∞, are discussed. The multidimensional version of Chernoff's bound and its relationship to large deviation theory is presented. Large deviation theo... View full abstract»

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  • Decision models: some lessons from the field

    Publication Year: 1991, Page(s):1018 - 1026
    Cited by:  Papers (58)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (884 KB)

    Studies of decision-making in such environments as nuclear power plants, urban fire departments, command-and-control centers, and courtrooms are discussed. The studies provide a different perspective on decision strategies from laboratory studies that rely on naive subjects performing relatively context-free tasks under little time pressure and static task conditions. The field research paradigms ... View full abstract»

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  • OS characterization for local CFAR detection

    Publication Year: 1991, Page(s):1212 - 1216
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    An order-statistic (OS) characterization for modeling clutter statistics at local detectors is presented. Important features of the OS characterization include its structure, which allows for parallel computations, and its degrees of freedom, which enable it to track various changes in the clutter statistics. Constant-false-alarm rate (CFAR) performance for local detectors designed from the OS cha... View full abstract»

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  • Functional characterization of fault tolerant integration in distributed sensor networks

    Publication Year: 1991, Page(s):1082 - 1087
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Fault-tolerance is an important issue in network design because sensor networks must function in a dynamic, uncertain world. A functional characterization of the fault-tolerant integration of abstract interval estimates is proposed. This model provides a preliminary version for a general framework that is hoped to develop to address the general problem of fault-tolerant integration of abstract sen... View full abstract»

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  • On human performance in telerobotics

    Publication Year: 1991, Page(s):971 - 982
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    Experimental attempts to build teleoperated master-slave robot arm manipulators revealed that a human operator has difficulty in interpreting input information (coming, e.g. directly via visual tract or from fixed or moving TV monitors at the scene), and consequently in teleoperation decision making. The problem becomes more pronounced when the slave arm has to operate in a complex environment whe... View full abstract»

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  • Linear imaging with sensor arrays on convex polygonal boundaries

    Publication Year: 1991, Page(s):1155 - 1166
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    The resolution of a linear imaging system is determined by the size of the aperture on which it measures data. For a fixed number of sensor elements, large 2-D apertures are formed when the elements are placed on the boundary of some planar region. It is proved that it is possible, in principle, to use only the boundary of some convex region as the aperture, while synthesizing the effect of having... View full abstract»

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  • Decisions with probabilities over finite product spaces

    Publication Year: 1991, Page(s):1238 - 1242
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    Techniques for decision-making with probabilities over finite product spaces are discussed. In general, the type of decision problem generated by the available probabilistic information is one of decision under partial uncertainty: the probability distribution over the event space for the problem is determined only to the extent that it is contained in a convex polyhedron of distributions. The str... View full abstract»

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  • Probabilistic risk assessment of quality control and quality assurance measures in structural design

    Publication Year: 1991, Page(s):1000 - 1007
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    A probabilistic risk assessment approach used to examine the effects of human error on a typical structural engineering design task (design of a steel I-beam) is reported. This approach utilizes an event-tree methodology and a Monte Carlo simulation analysis. An investigation of the efficiency of a quality control measure (e.g. design checking) is reported that includes design checking guidelines ... View full abstract»

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  • A hierarchy of network-based knowledge systems

    Publication Year: 1991, Page(s):1184 - 1191
    Cited by:  Papers (5)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    An extension of the method that was used for building and using the network-based knowledge system SUPER is proposed to fully utilize the benefits of this approach in the domain of diagnosing distributed dynamically evolving processes. In the scope of distributed sensor networks, several issues are addressed concerning problems dealing with software architectures, strategies, and properties for ef... View full abstract»

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