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AI Systems in Government Conference, 1989.,Proceedings of the Annual

Date 27-31 March 1989

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Displaying Results 1 - 25 of 47
  • Proceedings of the Annual AI Systems in Government Conference (IEEE Cat. No.89CH2715-1)

    Publication Year: 1989
    Request permission for commercial reuse | PDF file iconPDF (115 KB)
    Freely Available from IEEE
  • Managing flow of control in diagnostic expert systems

    Publication Year: 1989, Page(s):303 - 310
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    It is argued that many expert systems for equipment fault diagnosis have lost sight of the goal of modeling the actual procedures of the domain expert. It is shown that it is possible to model such expertise in the design of flow of control in such expert systems, i.e. in the architecture as well as the rule base. The authors present as examples two such features from an expert system for the main... View full abstract»

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  • Toward a naive theory of trafficability

    Publication Year: 1989, Page(s):2 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The author describes the development of a naive theory of trafficability in the predictive calculus for vehicles and military units owning them. Concepts covered include terrain features on the surface of the earth, continuous elevations, trafficability of vehicles and units on surfaces, and being able to reach one place from another. An example showing how the theory disambiguates a moving target... View full abstract»

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  • An automatic network troubleshooter for throughput bottlenecks in computer networks

    Publication Year: 1989, Page(s):296 - 302
    Cited by:  Papers (4)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    Government agencies operate several large computer networks; diagnosing and repairing performance problems on these networks is an expensive task. The Automatic Network Troubleshooter (ANT) project's goal is to reduce this expense by reducing the mean-time-to-repair for performance problems. ANT uses a model-based troubleshooting technique: first creating an executable model of network misbehavior... View full abstract»

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  • Automated knowledge generation in support of Shuttle ground operations

    Publication Year: 1989, Page(s):268 - 274
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A system is described that performs automated knowledge generation (AKG) using structural databases to create semantic knowledge bases. The approach, borrowed from machine vision, uses relaxation labeling to propagate constraints through the system. A prototype system has been developed which accesses an Intergraph CAD database, `processes' the information contained therein, and generates a frame-... View full abstract»

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  • Parsing for prosody: what a text-to-speech system needs from syntax

    Publication Year: 1989, Page(s):188 - 194
    Cited by:  Papers (2)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The authors describe an experimental text-to-speech system that uses a syntactic parser and prosody rules to determine prosodic phrasing for synthesized speech. It is shown that many aspects of sentence analysis that are required for other parsing applications, e.g. machine translation and question answering, become unnecessary in parsing for text-to-speech. It is possible to generate natural-soun... View full abstract»

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  • An automated injury coding system

    Publication Year: 1989, Page(s):24 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The authors describe a prototype expert system for assigning codes to injuries detected in medical records such as hospital discharge summaries and coroner's reports. The system is intended to assist investigators in the task of analyzing official data related to injuries sustained by the occupants of automobiles involved in highway accidents. The design draws on previous work by the authors in th... View full abstract»

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  • Diagnosing an analog feedback system using model-based reasoning

    Publication Year: 1989, Page(s):290 - 295
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    The approach developed by J. de Kleer and B.C. Williams (1987) has been extended to diagnose steady-state faults in an analog feedback system. A prototype system called AMFI (automated model-based fault isolation) is described which automatically diagnoses a target system given only information on the connectivity and component transfer functions. The prototype detects inconsistencies among measur... View full abstract»

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  • Human corps planning: a first-order computational model

    Publication Year: 1989, Page(s):38 - 43
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    Human authors have attempted to identify a plausible first-order model which characterizes the high-level control cycle of expert human planners in the task of battlefield planning. Literature on the training of battlefield planning experts, interviews with expert planners, Army doctrine, and observations of planning activities of human experts were used to construct the model. The model is evalua... View full abstract»

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  • The DBG message understanding system

    Publication Year: 1989, Page(s):258 - 265
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    The DBG (Data Base Generator) message understanding system takes as input the text of military messages of various types and produces as output a representation of the content of the messages in the form of instantiated templates, which are frame structures specifying the properties of entities and events in particular domains. These structures can then be used to generate sets of data elements fo... View full abstract»

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  • A signal analysis expert system for signal noise reduction

    Publication Year: 1989, Page(s):93 - 99
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    A signal-analysis expert system (SAES) has been developed to address the problem of noise-editing pulse-position modulation (PPM) signals in preparation for analysis. These signals have historically required manual noise editing, or a combination of manual and semiautomatic editing techniques. Due to the nature of the signal, standard frequency-domain noise-reduction techniques are not applicable.... View full abstract»

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  • The Carryback Processing Assistant: a study in case processing

    Publication Year: 1989, Page(s):218 - 225
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Case processing involves amending, correcting, or updating an existing account. It is the least automated type of processing in the Internal Revenue Service. The author describes how a constraint network and a process called discrepancy resolution can be used to limit the amount of input data needed to process a case. He presents results achieved by the Carryback Processing Assistant, a system des... View full abstract»

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  • OPERA-an expert operations analyst for a distributed computer system

    Publication Year: 1989, Page(s):179 - 185
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    OPERA (operations analyst) is a suite of expert systems being developed to improve operations support of a complex distributed computer network in the Space Shuttle Launch Processing System. The two expert systems in the initial OPERA prototype assist users in isolating and correcting network problems. One expert system monitors network error messages, which interprets to hypothesize faults and to... View full abstract»

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  • Constraint-based image understanding system for aerial imagery interpretation

    Publication Year: 1989, Page(s):141 - 147
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    The authors describe a constraint-based image understanding system, named COBIUS, for aerial imagery interpretation. COBIUS consists of knowledge bases for domain objects spatial and temporal constraints, control strategies, blackboard areas to instantiate hypotheses of objects and constraints, and an image feature database to fuse results from multiple image segmentation modules. Domain-specific ... View full abstract»

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  • A new algorithm for truth maintenance

    Publication Year: 1989, Page(s):14 - 21
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The author offers a truth maintenance algorithm which combines key features of existing algorithms. Like J. de Kleer's (1986) ATMS (assumption-based truth maintenance systems), it finds all solution states of belief and avoids dependency-directed backtracking. Like J. Doyle's (1979) TMS, it deals explicitly with nonmonotonic justifications and arguments for beliefs. The algorithm uses a novel repr... View full abstract»

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  • Knowledge acquisition for an Internal Revenue Service classification system

    Publication Year: 1989, Page(s):281 - 288
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The authors introduce the Automated Issue Identification System (AIIS), an expert system prototype designed and built for the US Internal Revenue Service (IRS). They describe the classification task as currently performed by IRS auditors, and the expected benefits of automating this task with an expert system. The multilayer objectives of the knowledge engineering team are specifically detailed. K... View full abstract»

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  • Environs-an expert system: application to the impact of environmental pollution on the health of industrial workers and general public

    Publication Year: 1989, Page(s):33 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    An interactive system called Environs which enables experts gradually to construct a knowledge base is described. This rule-based expert system makes it possible for an expert to convey his expertise to the system without the intervention of a computer specialist. This knowledge-based production rule system is constructed to reduce the superfluity of rules and eliminate inconsistency, thereby secu... View full abstract»

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  • The PUNDIT natural-language processing system

    Publication Year: 1989, Page(s):234 - 243
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    The authors describe the PUNDIT (Prolog Understanding of Integrated Text) text-understanding system, which is designed to analyze and construct representations of paragraph-length text. PUNDIT is implemented in Quintus Prolog, and consists of distinct lexical, syntactic, semantic, and pragmatic components. Each component draws on one or more sets of data, including a lexicon, a broad-coverage gram... View full abstract»

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  • Knowledge intensive empirical learning using multiple levels of background knowledge

    Publication Year: 1989, Page(s):157 - 163
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The author describes a substructure discovery system, PLAND, that combines empirical learning methods with knowledge-intense learning algorithms. Unlike other systems which combine similarity-difference-based and explanation-based learning techniques at a single level, the PLAND system uses knowledge to direct the learning process on three distinct levels. This multileveled approach to learning al... View full abstract»

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  • Multi-modal output composition for human-computer dialogues

    Publication Year: 1989, Page(s):250 - 257
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    The authors discuss the development of a prototype multimodal human-computer interface system, called CUBRICON, which is a research platform for investigating how knowledge-based approaches can best be applied to enhance human-computer interfaces. Four critical features of such an interface are introduced along with CUBRICON's initial approach to achieving them. Several knowledge sources have been... View full abstract»

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  • Prospector II

    Publication Year: 1989, Page(s):88 - 92
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Prospector II has been designed as a frame-based expert system and the successor to PROSPECTOR to assist the geologist in performing regional mineral resource assessments. The changes that have occurred relate to the role of descriptive mineral deposit models in resource assessment and to the arrival of graphics-oriented workstations. These changes have brought about an expansion of the volunteer ... View full abstract»

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  • An assistant expert system: assisting assistors in assisting taxpayers

    Publication Year: 1989, Page(s):210 - 217
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    The US Internal Revenue Service (IRS) employs 5000 assistors to answer telephone inquiries from taxpayers. The author describes the design and development of an expert system, the Taxpayer Service Assistant (TSA), that helps assistors provide advice to taxpayers on tax law topics. As measured by the GAO (US Government Accounting Office), these assistors provide correct and complete answers on only... View full abstract»

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  • Expert systems as job training aids

    Publication Year: 1989, Page(s):113 - 119
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The author presents a proposal for the development of a general training aid that can be used with expert job aids to enhance on-the-job training. The training aid is based on a goal-directed architecture and can interact in several ways with a trainee, either passively, actively, or responsively. The focus for an initial test of the training aid will be procedure training based on an expert proce... View full abstract»

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  • PX1: a space shuttle mission operations knowledge-based system project

    Publication Year: 1989, Page(s):175 - 178
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    A knowledge-based system (KBS) prototyping project is examined. The work entails reasoning about the impact of component failures in space shuttle orbiter subsystems. The effort is directed toward the development of a system that will recognize passive component failures as potential safety hazards, rather than toward an active failure identification or diagnostic tool. The system was designed to ... View full abstract»

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  • Development and evaluation of artificial intelligence techniques for tactical decision support systems

    Publication Year: 1989, Page(s):133 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    To facilitate research into multiagent planning issues, the Command and Control Testbed Using Simulation (CACTUS) and the Situation-based Autonomous Reasoner in a GBB (ground-based battle) Environment (SARGE) have been developed. CACTUS is a simulation of combat operations for platoon-sized units in battalion-level engagements. Those battlefield elements that affect the planning process of the for... View full abstract»

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