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IEEE Transactions on Systems, Man, and Cybernetics

Issue 4 • Date Jul/Aug 1993

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Displaying Results 1 - 23 of 23
  • Case-based reasoning and learning in manufacturing with the TOLTEC planner

    Publication Year: 1993, Page(s):1010 - 1023
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1380 KB)

    The research presented concentrates on bringing together case-based reasoning and expert knowledge-based reasoning in a planner called TOLTEC. The expert's domain-specific knowledge is modelled as dynamic memory structures and this representation is used to help the planner reason and control its planning process. TOLTEC uses a complex indexing of its cases, so as to allow incremental retrieval. T... View full abstract»

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  • Local search for satisfiability (SAT) problem

    Publication Year: 1993, Page(s):1108 - 1129
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1752 KB)

    The satisfiability problem (SAT) is a fundamental problem in mathematical logic, constraint satisfaction, VLSI engineering, and computing theory. Methods to solve the satisfiability problem play an important role in the development of computing theory and systems. Traditional methods treat the SAT problem as a constrained decision problem. During past research, the number of unsatisfiable clauses ... View full abstract»

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  • Timing and chunking in processing temporal order

    Publication Year: 1993, Page(s):993 - 1009
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1780 KB)

    A computational framework of learning, recognition and reproduction of temporal sequences are provided, based on an interference theory of forgetting in short-term memory (STM), modelled as a network of neural units with mutual inhibition. The STM model provides information for recognition and reproduction of arbitrary temporal sequences. Sequences are acquired by a new learning rule, the attentio... View full abstract»

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  • Multiple participant-multiple criteria decision making

    Publication Year: 1993, Page(s):1184 - 1189
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    Meaningful connections among different types of decision making Situations are established in order to improve the development of useful decision technologies for application to real world problems. More specifically, an assertion is put forward that suggests that single participant-multiple criteria (SPMC) and multiple participant-single criterion (MPSC) decision making problems may be treated in... View full abstract»

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  • Improved flagging for pattern classifying diagnostic systems

    Publication Year: 1993, Page(s):1101 - 1107
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Fault detection and isolation (diagnosis) is based on residual generation and residual analysis. The model-based approach flags the residuals through thresholding, to isolate the effect of faults from noise, and performs diagnosis by mapping the residuals to a residual space with prespecified fault signatures. The main problem with this approach is that thresholds are not always able to differenti... View full abstract»

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  • Diagnostic reasoning in action

    Publication Year: 1993, Page(s):981 - 992
    Cited by:  Papers (44)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1244 KB)

    The task of diagnosis is a very important topic in many different contexts. In highly complex technical installations involving high hazards, such as process plants, diagnosis is a crucial part of disturbance control; in technical maintenance, diagnosis is necessary to locate the root cause of system failures; and in medicine, diagnosis is the basis for any patient treatment. The paper presents a ... View full abstract»

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  • An adaptive gait for legged walking machines over rough terrain

    Publication Year: 1993, Page(s):1150 - 1155
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    An adaptive gait algorithm for multilegged walking machines over rough terrain has been developed. The heuristic and hierarchical approach for the three levels of: 1) body motion adaptation; 2) leg sequence adaptation; and 3) leg position adaptation is effective, straightforward, and relatively independent of the number of legs. On rough terrains with depressions the algorithm behaves like a &ldqu... View full abstract»

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  • A genetics-based hybrid scheduler for generating static schedules in flexible manufacturing contexts

    Publication Year: 1993, Page(s):953 - 972
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2020 KB)

    Existing computerized systems that support scheduling decisions for flexible manufacturing systems (FMS's) rely largely on knowledge acquired through rote learning for schedule generation. In a few instances, the systems also possess some ability to learn using deduction or supervised induction. We introduce a novel AI-based system for generating static schedules that makes heavy use of an unsuper... View full abstract»

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  • Learning optimal conjunctive concepts through a team of stochastic automata

    Publication Year: 1993, Page(s):1175 - 1184
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (916 KB)

    The problem of learning conjunctive concepts from a series of positive and negative examples of the concept is considered. Employing a probabilistic structure on the domain, the goal of such inductive learning is precisely characterized. A parallel distributed stochastic algorithm is presented. It is proved that the algorithm will converge to the concept description with maximum probability of cor... View full abstract»

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  • Design and motion planning of a mechanical snake

    Publication Year: 1993, Page(s):1091 - 1100
    Cited by:  Papers (25)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB)

    The paper presents the design and motion planning for a mechanical snake robot that was built at the University of Michigan. The structure of the robot enables it to move without wheels. It is constructed of a series of articulated links, each one with a motor and linear solenoid. Although each link has only one motor, this structure allows the body configuration to be easily controlled thereby en... View full abstract»

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  • A decision-oriented approach to system design and development

    Publication Year: 1993, Page(s):1024 - 1037
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1228 KB)

    Describes a two-phase, decision-oriented process that overcomes many of the system usability problems and unfavorable cost/effectiveness consequences resulting from current design and development processes. The system design and development approach presented combines the use of a unique version of prototyping, a decision-oriented prototype, detailed requirements analysis, strong user involvement ... View full abstract»

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  • Supervisory control in a dynamic and uncertain environment: laboratory task and crew performance

    Publication Year: 1993, Page(s):1130 - 1138
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1004 KB)

    A research program using a microworld methodology for investigating human performance in a dynamic uncertain environment is described. One- and two-person crews performed a supervisory control task that involved piloting a low-fidelity scout helicopter and supervising four additional helicopters. The simulated environment contained cargo and enemy craft that had to be discovered by searching a 100... View full abstract»

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  • On a hierarchical structure for fuzzy modeling and control

    Publication Year: 1993, Page(s):1189 - 1197
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    The fuzzy logic controller is examined and the basic assumptions inherent in the Mamdani model is described. Distinctions are made between rule firing based upon possibility and certainty qualification. Rules are looked at as a partitioning of the input space. The author discusses the use of certainty qualification in determining the firing level of a rule. Different representations of the rule co... View full abstract»

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  • Fault detection/monitoring using time Petri nets

    Publication Year: 1993, Page(s):1155 - 1162
    Cited by:  Papers (40)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    While controlling manufacturing systems, real time data is collected through sensory devices or some other means and fed back to the controller for the purpose of monitoring that system. Monitoring refers to the analysis of data collected from the system. It involves fault detection and diagnostics. Here, we shall emphasize the fault detection aspects of monitoring. Modeling the control system by ... View full abstract»

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  • Adaptive hierarchical fuzzy controller

    Publication Year: 1993, Page(s):973 - 980
    Cited by:  Papers (130)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    A methodology for designing adaptive hierarchical fuzzy controllers is presented. In order to evaluate this concept, several suitable performance indices were developed and converted to linguistic fuzzy variables. Based on those variables, a supervisory fuzzy rule set was constructed and used to change the parameters of a hierarchical fuzzy controller to accommodate the variations of system parame... View full abstract»

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  • Fuzzy qualitative simulation

    Publication Year: 1993, Page(s):1038 - 1061
    Cited by:  Papers (44)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2200 KB)

    An approach is described that utilizes fuzzy sets to develop a fuzzy qualitative simulation algorithm that allows a semiquantitative extension to qualitative simulation, providing three significant advantages over existing techniques. Firstly, it allows a more detailed description of physical variables, through an arbitrary, but finite, discretisation of the quantity space. The adoption of fuzzy s... View full abstract»

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  • Motion trajectories

    Publication Year: 1993, Page(s):1138 - 1150
    Cited by:  Papers (16)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1184 KB)

    A simple algorithm for selecting and linking interesting flow vectors across a sequence of frames for computing motion trajectories is presented. Tokens are tracked that have both interesting pixel gray values in the spatial domain and in the optical flow field in the temporal domain. This effectively removes some redundant trajectories. Due to errors introduced during the computation of optical f... View full abstract»

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  • Unified structure and parameter identification of fuzzy models

    Publication Year: 1993, Page(s):1198 - 1205
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The unified approach to fuzzy modeling developed in this correspondence addresses the problems of structure and parameter identification of fuzzy models. It demonstrates an alternative view to structure identification, transforming the problem of structure identification to estimation of the distribution of input space. A new concept of sample probability distributions (SPD) is introduced and a fa... View full abstract»

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  • Spatially dynamic calibration of an eye-tracking system

    Publication Year: 1993, Page(s):1162 - 1168
    Cited by:  Papers (18)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    ERICA is a personal-computer workstation developed to provide nonverbal, motor-disabled individuals with a means of communication and environmental control. The system employs computer vision to detect the user's approximate point of regard on a display screen and then invokes the menu option currently appearing at the corresponding screen coordinates. In this way, a severely handicapped user can ... View full abstract»

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  • A choice set-sensitive analysis of preference information acquisition about discrete resources

    Publication Year: 1993, Page(s):1062 - 1071
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    The theory of questionnaires deals with the design of experiments for eliciting information with a view to making a decision. The need for eliciting information arises in the problem of allocation of discrete and indivisible scarce resources among consumers by a coordinator. Resource allocation is carried out based on consumer preference information about the discrete resources. This information i... View full abstract»

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  • Supervisory control in a dynamic and uncertain environment: a process model of skilled human-environment interaction

    Publication Year: 1993, Page(s):929 - 952
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2576 KB)

    An understanding of how both psychological and environmental factors mutually constrain skilled behavior is required to effectively support human activity. As a step toward meeting this need, a process model of skilled human interaction with a dynamic and uncertain environment is presented. The model was able to mimic human behavior in a laboratory task requiring one- and two-person crews to direc... View full abstract»

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  • A noise-tolerant algorithm for robotic hand-eye calibration with or without sensor orientation measurement

    Publication Year: 1993, Page(s):1168 - 1175
    Cited by:  Papers (32)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    An iterative algorithm for calibration of a robotic hand-eye relationship is presented. The hand-eye calibration can be performed by solving a system of homogeneous transformation equations of the form A iX=XBi, where X is the unknown sensor position relative to the robot wrist, Ai is the ith robot motion, and Bi is the ith sensor motion. Unlike existing... View full abstract»

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  • A quantitative model for adaptive task allocation in human-computer interfaces

    Publication Year: 1993, Page(s):1072 - 1090
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1528 KB)

    Describes the design and implementation of a task allocation for a human-computer interface that is capable of adapting the human's workload, online, according to his ability to perform tasks for systems, where the computer acts as a backup decision maker. During the operation of the system, the human and the computer's service and error rates are continually measured. An embedded human model esti... View full abstract»

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