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IEEE International Conference on systems, Man and Cybernetics

作者： T.W. Scutt R.I. Damper ICL Institute of Information Technology University of Nottingham Nottingham UK Image Speech and Intelligent Systems Research GroupDepartment of Electronics and Computer Science University of Southampton Southampton UK Department of Computer Science and Engineering Oregon Graduate Institute of Science and Technology Portland OR USA

Over recent years, the focus of artificial intelligence (AI) research has shifted from top-down simulation of high-level cognitive functions based on (essentially-ungrounded) symbolic computations to consideration of the way that intelligent behaviour can emerge in bottom-up fashion in systems situated in the 'real' world. Inspirations from neurobiology and concepts of neural information processing have been very influential in this 'new' AI: most usually in the guise of 'parallel distributed processing' approaches operating at a high level of abstraction, or the more detailed and biologically-realistic 'computational neuroscience' paradigm. In this paper, we describe a biologically-motivated approach to learning in situated robots based on the computational neuroscience paradigm. The mechanisms by which such learning occurs are habituation, sensitization and classical conditioning of the neural responses involved in basic, pre-existing ('hand-wired') reflexes. Emergent light-seeking and collision-avoidance behaviors are observed in an adaptive mobile robot embodying these learning principles, as a result of interaction with its environment.

关键词： Mobile robots Artificial intelligence Biology computing Neuroscience Learning Biological system modeling Computational modeling intelligent robots Information processing Distributed processing

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A biocybernetic simulation of speech perception by humans and animals

A biocybernetic simulation of speech perception by humans an...

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IEEE International Conference on systems, Man and Cybernetics

作者： R.I. Damper Image Speech and Intelligent Systems ISIS Research Group Department of Electronics and Computer Science University of Southampton Southampton UK Center for Spoken Language Understanding Department of Computer Science and Engineering Oregon Graduate Institute of Science and Technology Portland OR USA

Important aspects of the voiced/unvoiced categorization of synthetic syllable-initial stop consonants are reproduced by a two stage biocybernetic simulation of the auditory system. This behavior is emergent - it is not explicitly programmed into the model - and no fine timing information is necessary. Unlike real (human and animal) listeners, the computational auditory model can be systematically manipulated and probed to determine the basis of its behavior. This reveals the importance of the region of first formant onset to the perception of voicing for these stimuli. Spectral analysis of this region in the raw stimuli show that processing by the first stage of the model, mimicking the functions of the peripheral auditory system, is not essential to the observed behavior. Thus, in this case at least, the phonetic perception of voicing is directly recoverable from both acoustic and auditory representations of the stimuli.

关键词： Cybernetics Humans Animals Computational modeling Biological system modeling Auditory system Speech coding computer science Speech processing intelligent systems

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HOQ's implicit requirements assessment: a fuzzy logic-based method

HOQ's implicit requirements assessment: a fuzzy logic-based ...

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Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： C. Temponi J. Yen W.A. Tiao School of Business Southwest Texas State University San Marcos TX USA Center for Fuzzy Logic Roboticsand Intelligent Systems Department of Computer Science Texas A and M University College Station TX USA

The House of Quality (HOQ) is used to identify the relationships between products/services requirements based on the perceptions of customers and experts from a multidisciplinary team. The foundation of the house of quality is the belief that products should be designed to reflect customers' desires and taste. There are two issues in analyzing these requirements using HOQ. First, requirements are often described informally using vague terms; this makes it difficult to meet customer's needs. Second, identifying relationships between requirements is often time consuming, thus, arriving at a group consensus on some relationships between requirements could be cumbersome. To address these issues, we have developed a fuzzy logic-based extension to HOQ for capturing imprecise requirements. We developed a heuristic inference scheme to reason about the implicit relationships between requirements. A textile mill supply business application is used to illustrate our approach.

关键词： Fuzzy logic Quality function deployment Customer satisfaction intelligent robots Quality management intelligent systems computer science Product design Textiles Milling machines

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Assessment of customer's and technical requirements through a fuzzy logic-based method

Assessment of customer's and technical requirements through ...

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IEEE International Conference on systems, Man and Cybernetics

作者： C. Temponi J. Yen W.A. Tiao School of Business Southwest Texas State University San Marcos TX USA Center for Fuzzy Logic Robotics and Intelligent Systems Department of Computer Science Texas A and M University College Station TX USA

The foundation of the house of quality (HOQ) is the belief that products should be designed to reflect customers desires. It is often used to identify the relationships between requirements based on different viewpoints. There are two issues in analyzing these requirements using HOQ. First, requirements are often described informally using vague terms, which makes it difficult to meet customer's needs. Second, identifying relationships between requirements is often time consuming. To address these issues, we have developed a fuzzy logic-based extension to HOQ for capturing imprecise requirements to both facilitate communication of team members and have a formal representation of requirements. Based on this representation, we developed a heuristic inference scheme to reason about the implicit relationships between requirements. We illustrate our approach using a textile mill supply business application.

关键词： Fuzzy logic Quality function deployment Customer satisfaction intelligent robots Disaster management Quality management intelligent systems Product design Textiles Milling machines

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computer vision research at the University of Southern California

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INTERNATIONAL JOURNAL OF computer VISION 1996年第1-2期20卷 5-9页

作者： Nevatia, R Medioni, G Institute of Robotics and Intelligent Systems University of Southern California Computer Science Department 90089 Los Angeles CA USA

A broad computer research program that includes many topics of basic research such as perceptual grouping, stereo and motion analysis, shape description and object recognition as well as many application areas such as aerial image analysis, moving target analysis and vehicle navigation are being conducted at the University of Southern California. The objective of the research is to construct 'generic' vision system. A generic system is one that is capable of working in a variety of domains, or at least is capable of being reconfigured rapidly to do so.

关键词： computer vision

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A potential field algorithm for fixture synthesis in 2d

A potential field algorithm for fixture synthesis in 2d

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ASME 1996 Design Engineering Technical Conferences and computers in Engineering Conference, DETC-CIE 1996

作者： Penev, Kamen Requicha, Aristides A. G. Programmable Automation Laboratory Computer Science Department and Institute for Robotics and Intelligent Systems University of Southern California Los AngelesCA90089-0781 United States

ISBN: (纸本)9780791897621

A fixture is an arrangement of fixturing modules that locate and hold a workpart during a manufacturing operation. In this work we address the fixturing problem in the plane. We consider fixtures with frictionless point contacts. The focus is on contact point placement and its integration with fixture analysis. A novel method for planar fixture synthesis has been developed. It is a non-deterministic, potential field algorithm for contact point placement. The method provides a basic framework for the integration of heterogeneous high-level fixturing agents through an interface based on zones of attraction and repulsion on the workpart boundary. The algorithm may produce redundant fixtures, and can augment partial solutions to complete form closure fixtures. © 1996 by ASME.

关键词： Fixtures (tooling)

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Constructing optimal fuzzy models using statistical information criteria 1

Constructing optimal fuzzy models using statistical informat...

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1996 Mexico-USA Collaboration in intelligent systems Technologies - 1st Joint Conference on intelligent systems between the 9th International Symposium on Artificial Intelllgence, ISAI 1996 and the 6th International Conference on Industrial Fuzzy Control and intelligent systems, IFIS 1996

作者： Yen, J. Liang Wang Center for Fuzzy Logic Robotics and Intelligent Systems Department of Computer Science Texas AandM University College StationTX77843-3112 United States

ISBN: (纸本)9682994373

In this paper we describe a principled approach to explore the fitness-complexity trade-off using several optiniality criteria together with a fuzzy model reduction technique based on the singular value decomposition (SVD). The role of these optimality criteria in fuzzy modeling is discussed and their practical applicability is illustrated using a nonlinear system modeling example. © 1996 ITESM.

关键词： Economic and social effects

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On certificates and lookahead in dynamic graph problems 7

On certificates and lookahead in dynamic graph problems

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Proceedings of the 1996 7th Annual ACM-SIAM Symposium on Discrete Algorithms

作者： Khanna, Sanjeev Motwani, Rajeev Wilson, Randall H. Department of Computer Science Stanford University Stanford 94305 CA United States Intelligent Systems and Robotics Center Sandia National Laboratories Albuquerque 87185 NM United States

ISBN: (纸本)0898713668

Recent work in dynamic graph algorithms has led to efficient algorithms for dynamic undirected graph problems such as connectivity. However, no efficient deterministic algorithms are known for the dynamic versions of fundamental directed graph problems like strong connectivity and transitive closure, as well as some undirected graph problems such as maximum matchings and cuts. We provide some explanation for this lack of success by presenting quadratic lower bounds on the certificate complexity of the seemingly difficult problems, in contrast to the known linear certificate complexity for the problems which have efficient dynamic algorithms. A direct outcome of our lower bounds is the demonstration that a generic technique for designing efficient dynamic graph algorithms, viz., sparsification, will not apply to the difficult problems. More generally, it is our belief that the boundary between tractable and intractable dynamic graph problems can be demarcated in terms of certificate complexity. In many applications of dynamic (di)graph problems, a certain form of lookahead is available. Specifically, we consider the problems of assembly planning in robotics and the maintenance of relations in databases. These give rise to dynamic strong connectivity and dynamic transitive closure problems, respectively. We explain why it is reasonable, and indeed natural and desirable, to assume that lookahead is available in these two applications. Exploiting lookahead to circumvent their inherent complexity, we obtain efficient fully-dynamic algorithms for strong connectivity and transitive closure.

关键词： Directed graphs

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Assembly planning for modular fixtures

Assembly planning for modular fixtures

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IEEE International Workshop on intelligent Robots and systems (IROS)

作者： Chunsik Yi G.A. Bekey Institute for Robotics and Intelligent Systems Department of Computer Science University of Southern California Los Angeles CA USA

Fixtures are devices used in manufacturing to immobilize a part far operations such as assembly, inspection or machining. Modular fixtures are configurations of standard components. The goal of a automatic modular fixture design is to find algorithms to determine a set of fixturing contact points automatically, given a set of modular components and the fixturing requirements. This paper considers the problem of generating valid assembly sequences for a given modular future configuration. This is called assembly planning for modular fixtures. Because the application domain is known, we can devise an efficient assembly planning system taking advantage of the characteristics of the fixture domain. In this paper, we propose a fastener-based approach which considers the functionality of fasteners (to hold the fixture components together) to achieve both the efficiency in assembly planning and the stability of the generated assembly sequences. We also describe an accessibility measure that can be used to select preferred assembly sequences. This work complements automatic fixture design such that complete automation can be achieved from the design of a fixture to its assembly, which can be performed manually or with the aid of robots.

关键词： Fixtures Robotic assembly robotics and automation Manufacturing Inspection Machining Algorithm design and analysis Assembly systems Fasteners Stability

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Modeler independent procedural interfaces for solid modeling

Modeler independent procedural interfaces for solid modeling

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computer Graphics International

作者： JungHyun Han A.A.G. Requicha Computer Science Department and Institute for Robotics and Intelligent Systems University of Southern California Los Angeles CA USA

This paper describes modeler independent application programming interfaces called adaptors. A solid modeler is augmented with an adaptor so as to provide a standard procedural interface to applications and function as a geometric server. Adaptors give the applications portability and free the application programmers from the details of specific modelers. Adaptors have been developed at USC for two different modelers, PADL-2 (a Constructive Solid Geometry system) and Parasolid (a boundary modeler). The issues raised in adaptor development and their solutions are discussed. Adaptors are routinely used at USC in a distributed environment where a solid modeler augmented with an adaptor, an application, and a renderer run as separate processes and communicate with one another through local area networks.

关键词： Solid modeling Object oriented modeling Geometry intelligent robots computer aided manufacturing CADCAM Topology computer science intelligent systems USA Councils

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