Showing papers in "Expert Systems With Applications in 1989"
TL;DR: An elevator system employing a micro-processor-based group controller to assign cars to hall calls based on a Relative System Response (RSR) approach uses "artificial intellience" techniques to improve handling capacity and reducing waiting and service times.
Abstract: An elevator system employing a micro-processor-based group controller (FIG 2) communicating with the cars (3, 4) to assign cars to hall calls based on a Relative System Response (RSR) approach However, rather than using unvarying bonuses and penalties, the assigned bonuses and penalties are varied using "artificial intellience" techniques based on combined historic and real time traffic predictions to predict the number of people behind a hall call, and, calculating and using the average boarding and de-boarding rates at "en route" stops, and the expected car load at the hall call floor Prediction of the number of people waiting behind hall calls for a few minute intervals are made using traffic levels measured during the past few time intervals on that day as real time predictors, using a linear exponential smoothing model, and traffic levels measured during similar time intervals on previous similar days as historic traffic predictors, using a single exponential smoothing model The remaining capacity in the car at the hall call floor is matched to the waiting queue using a hall call mismatch penalty The car stop and hall stop penalties are varied based on the number of people behind the hall call and the variable dwell times at "en route" stops The stopping of a heavily loaded car to pick up a few people is penalized using a car load penalty These enhancements to RSR result in equitable distribution of car stops and car loads, thus improving handling capacity and reducing waiting and service times
48 citations
TL;DR: An expert system for performing a redesign operation in connection with an original design of the design representations on the blackboards in response to the original design and the identified dicrepancies and discrepancy causes.
Abstract: An expert system for performing a redesign operation in connection with an original design. A working memory includes a plurality of blackboards each for storing a design representation and desired operational characteristics. A simulation component comprises a plurality of simulators each for generating simulated operational characteristics in connection with a design representation on one of said blackboards. A diagnostic component identifies operational discrepancies between the simulated operational characteristics and the desired operational characteristics and the causes of the operational characteristics. A redesign component generates a redesign of the design representations on the blackboards in response to the original design and the identified dicrepancies and discrepancy causes.
39 citations
TL;DR: The overseer has the capability to alert lab personnel whenever questionable readings or trends are observed and provide a background review of the problem and suggest root causes and potential solutions, or appropriate additional tests that could be performed.
Abstract: An expert overseer for the operation and real-time management of a mass spectrometer and associated laboratory equipment. The overseer is a computer-based expert diagnostic system implemented on a computer separate from the dedicated computer used to control the mass spectrometer and produce the analysis results. An interface links the overseer to components of the mass spectrometer, components of the laboratory support system, and the dedicated control computer. Periodically, the overseer polls these devices and as well as itself. These data are fed into an expert portion of the system for real-time evaluation. A knowledge base used for the evaluation includes both heuristic rules and precise operation parameters. The overseer also compares current readings to a long-term database to detect any developing trends using a combination of statistical and heuristic rules to evaluate the results. The overseer has the capability to alert lab personnel whenever questionable readings or trends are observed and provide a background review of the problem and suggest root causes and potential solutions, or appropriate additional tests that could be performed. The overseer can change the sequence or frequency of the polling to respond to an observation in the current data.
17 citations