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IEEE Transactions on Systems, Man, and Cybernetics

Issue 1 • Date Jan/Feb 1990

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Displaying Results 1 - 25 of 27
  • Estimation of mixing probabilities in multiclass finite mixtures

    Publication Year: 1990, Page(s):149 - 158
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    The problem of estimating prior probabilities in a mixture of M classes with known class conditional distributions is studied. The observation is a sequence of n independent, identically distributed mixture random variables. The first moments of appropriately formulated functions of observations are used to facilitate estimation. The complexity of these functions may vary from li... View full abstract»

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  • Classification models for the counting of cellular objects

    Publication Year: 1990, Page(s):283 - 291
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    The automated image analysis cell classification paradigm for estimating the proportion (P) of cells on a cytology slide containing objects of interest is presented. Automated cell counters based on image analysis offer a mechanized alternative to the tedious and time-consuming task of manually performing these counts. Several classification models for increasing the automated estimation ... View full abstract»

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  • A game theoretic approach with risk assessment for international conflict solving

    Publication Year: 1990, Page(s):141 - 148
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A game-theoretic approach based on risk assessment for evaluating the effectiveness of the formation of international concords is discussed. An n-person cooperative game in the characteristic-function form is used for international conflict solving. A concept for solution of a game called a nucleolus and its alternative forms are derived, and a two-layer hierarchical system for the evalua... View full abstract»

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  • Predicting fault diagnosis performance: why are some bugs hard to find?

    Publication Year: 1990, Page(s):274 - 283
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1244 KB)

    An experiment to examine how a troubleshooter's mental model of a logic network might prejudice his or her ability to diagnose previously unseen faults is discussed. Subjects first inferred the structure of a logic network by viewing it in different states. Most subjects ended up with mental models of the network that were almost, but not completely, correct. Then, in a fault diagnosis phase, subj... View full abstract»

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  • Multispectral image context classification using stochastic relaxation

    Publication Year: 1990, Page(s):128 - 140
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1716 KB)

    A multispectral image context classification which is based on a stochastic relaxation algorithm and Markov-Gibbs random field is presented. The implementation of the relaxation algorithm is related to a form of optimization programming using annealing. The authors discuss the motivation for a Bayesian context-decision rule, and then use a Markov-Gibbs model to develop a contextual classification ... View full abstract»

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  • The bond energy algorithm revisited

    Publication Year: 1990, Page(s):268 - 274
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (720 KB)

    The bond energy algorithm of W.T. McCormick, P.J. Schweitzer, and T.W. White (Oper. Res., vol.20, p.993-1009, 1972) is examined in the context of related strategies of data analysis that seek to solve problems in production research, imaging, and related engineering problems. A taxonomy of types of input data and forms of matrix structure, adopted from other areas of data analysis, serves to clari... View full abstract»

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  • A framework for networked knowledge-based systems

    Publication Year: 1990, Page(s):119 - 127
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    A conceptual framework for building a network of knowledge-based systems (KBS) to fully utilize the benefits of these systems within complex decision-making environments is proposed. The authors focus on three issues: (1) what should be the capabilities of the system supporting the human decision-maker; (2) how the nodes of such a network should be linked; and (3) what knowledge each node in the n... View full abstract»

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  • Composite edge detection with random field models

    Publication Year: 1990, Page(s):81 - 93
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2524 KB)

    A pixel is regarded as an edge pixel if there is either a sharp change in the intensity values on either side of the pixel like a step function, yielding a so-called step edge or the texture on either side of the pixel is different, yielding a so-called texture edge. A two stage generate-and-confirm paradigm for detecting all the edge pixels in the scene is used. In the first stage, a directional ... View full abstract»

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  • An object-oriented expert system based on pattern recognition

    Publication Year: 1990, Page(s):33 - 44
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (996 KB)

    The design and implementation of a knowledge elicitation tool for use in specifying real-time control system requirements with the Core method is presented. The tool uses pattern recognition based on a Holland classifier to propose a control-system object space for subsequent manipulation, and it is in this area that emphasis is placed. Classifier systems in general are discussed, and an implement... View full abstract»

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  • Neural correlation based on the IPFM model

    Publication Year: 1990, Page(s):262 - 268
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The performance and the sensitivity of the neural correlator based on integral pulse frequency modulation (IPFM) are analyzed. The performance of the neural correlator is evaluated and shown to match many psychophysical test results. The behavior of the neural coder is expressed in terms of a stochastic nonlinear law. An analytical optimality condition for the mean-spike firing rate is derived. Nu... View full abstract»

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  • Information/communication and dispatching strategies for networks with mobile servers

    Publication Year: 1990, Page(s):111 - 118
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    The dispatch problem for a network with a general number of nonstationary service units is discussed. The possibility of dispatching a service unit to a call for service while the unit is in motion depends on the quality of the information/communication system available. Three information/communication systems are investigated: two extreme cases in which only stationary units can be dispatched fro... View full abstract»

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  • An exploration of orientation representation by Lie algebra for robotic applications

    Publication Year: 1990, Page(s):243 - 248
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    A number of conventional methods for orientation representation are reviewed and discussed. An analysis based on Lie algebra for exploring possible definitions of three-dimensional (3D) orientation vectors and for unifying representations of position and orientation is presented. The associated computation methods are developed and verified by application to the six-axis Puma 560 robot View full abstract»

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  • Representing and learning Boolean functions of multivalued features

    Publication Year: 1990, Page(s):67 - 80
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    An analysis and empirical measurement of threshold linear functions of multivalued features is presented. The number of thresholded linear functions, maximum weight size, training speed, and the number of nodes necessary to represent arbitrary Boolean functions are all shown to increase polynomially with the number of distinct values the input features can assume and exponentially with the number ... View full abstract»

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  • Model-base structures to support adaptive planning in command/control systems

    Publication Year: 1990, Page(s):18 - 32
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1308 KB)

    The basic rationale for an organization to constitute itself as a command/control system is to increase its potential for coping with particularly perilous, volatile and ill-constrained competitive environments. One characteristic common to such environments is the likelihood of confrontation by unanticipated or unplanned for situations. The emergence of such a situation might require adaptive pla... View full abstract»

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  • Toward efficient global optimization in large dynamic systems-the adaptive complex method

    Publication Year: 1990, Page(s):257 - 261
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The efficient solution of global optimization problems in large dynamic systems requires methods that are robust, do not require analytical expressions for the objective function or its derivatives and require function evaluations only on the order O(n), where n is the dimension of the search-variable space. The adaptive complex method operated in a staged feed-ahead mod... View full abstract»

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  • An overview of automated reasoning

    Publication Year: 1990, Page(s):202 - 224
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2264 KB)

    Two general approaches to reasoning with imperfect information are discussed: nonmonotonic reasoning and a calculus of uncertainty. Default reasoning is posed as an approach that is potentially capable of integrating many facets of these two approaches. Practical requirements for default reasoning are then established. This is done by identifying a number of cases that involve incomplete and uncer... View full abstract»

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  • Detection and smoothing of edge contours in images by one-dimensional Kalman techniques

    Publication Year: 1990, Page(s):159 - 165
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    An edge model is developed along with the associated edge detection and contour determination algorithms. An edge point along any scan direction is defined as a sufficient jump in the mean of a time series that is assumed to be white Gaussian around the edge point with the same variance on either side. An edge contour is defined as a sequence of such edge points, each point denoted by the two coor... View full abstract»

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  • On the hierarchical modeling analysis and simulation of flexible manufacturing systems with extended Petri nets

    Publication Year: 1990, Page(s):94 - 110
    Cited by:  Papers (55)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1460 KB)

    A class of Petri nets, called extended Petri nets, with multiple types of places, multiple classes of tokens and multiple arcs is proposed. It is utilized for the hierarchical modeling of flexible manufacturing systems, ensuring a priori that the extended Petri net system model obtained is live, bounded, consistent and error free. The proposed method views the operation of the flexible manufacturi... View full abstract»

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  • Belief combination and propagation in a lattice-structured interference network

    Publication Year: 1990, Page(s):45 - 57
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    Belief propagation and belief combination procedures based on the Dempster-Shafer belief function for inference in rule-based systems is proposed. The belief combination procedure yields results identical to those of Dempster's rule when pieces of evidence are independent. Dempster's rule is shown to be nonrobust for combining evidence with a high degree of conflict. The cause of the nonrobustness... View full abstract»

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  • On a generalization of variable precision logic

    Publication Year: 1990, Page(s):248 - 252
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Variable-precision logic was introduced by R.S. Michalski and P.H. Winston (Artif. Intell., vol.29, p.121-46, 1986) as a means for representing reasoning in the face of exceptions. Using the framework of belief structures, some of their ideas are extended. In particular, a general framework that easily allows the representation of different types of rules in a unified manner is provided. This appr... View full abstract»

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  • Knowledge acquisition and fault diagnosis: experiments with PLAULT

    Publication Year: 1990, Page(s):225 - 242
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1844 KB)

    A series of experiments using a paradigm called PLAULT, where subjects have to discover the structure of a logical network, is reported. The links in the network are invisible, and subjects have to infer where they are by examining the status of the logic gates under a variety of conditions. Three experiments explore the interaction of features of the task, such as its spatial and graphical comple... View full abstract»

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  • User modeling in expert man-machine interfaces: a case study in intelligent information retrieval

    Publication Year: 1990, Page(s):166 - 185
    Cited by:  Papers (32)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1872 KB)

    The requirements of a user modeling component for an expert interface are analyzed, and the main points of a proposed approach to user modeling are stated. The authors focus on a knowledge-based system, called UM-tool, devoted to creating, maintaining, and using explicit user models within an expert interface. UM-tool supports a novel approach to user modeling, which is based both on the use of st... View full abstract»

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  • Quantitative analysis of a moment-based edge operator

    Publication Year: 1990, Page(s):58 - 66
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    An operator that is based on the sample variance of a group of pixels is introduced. It exhibits three unique properties: freedom from a predefined shape, low computational complexity and a rigorous stochastic formulation. The utility of the latter property in applying detection-theoretic principles to the task of edge detection and in theoretical predictions of experimental performance measures i... View full abstract»

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  • A new method for linearization of dynamic robot models

    Publication Year: 1990, Page(s):2 - 17
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    A method for linearizing dynamic models for robot manipulators along a nominal trajectory for robot manipulators is developed from the straightforward Lagrangian formulation. The method is very simple and systematic. It can be applied both to the computation of the feedforward control law (i.e. the joint generalized forces/torques) along the desired nominal trajectory and to the design of the feed... View full abstract»

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  • A study on graphic presentation formats and information processing using query tracing

    Publication Year: 1990, Page(s):252 - 257
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    A study to determine whether graphics are suitable for displaying information in complex information processing tasks is discussed. Using an information query system capable of responding in either graphical or tabular format, a laboratory experiment was conducted. A method called query tracing was introduced to observe information processing in a decision support system environment. The results i... View full abstract»

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