COM362 Knowledge Engineering Modern Case Studies 1 John MacIntyre 0191 515 3778...

COM362 Knowledge EngineeringModern Case Studies

1

Modern Case Studies

John MacIntyre0191 515 3778

[email protected]


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Application Areas

Engineering Diagnostics Environmental Monitoring Building Design Nutrition Advice Baking Police Investigation Remember the feasibility key points!


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The TIGER System

Developed Intelligent Applications Ltd, Scotland

Monitors gas turbines in real-time, and diagnoses faults

Linked to on-line data acquisition systems with hundreds of possible variables

Sophisticated front-end graphics for data visualisation


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The TIGER Problem

Information overload for plant engineers High capital costs of catastrophic failures High costs for non-availability of turbines Desire to run turbines to optimum

efficiency Lack of skilled engineers in turbine

diagnostics


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Benefits of TIGER

Continuous, 24-hour a day analysis of data

Automatic or semi-automatic diagnosis Storage of complete picture of events

leading up to turbine trips or faults Reduced downtime, increased

availability Hundreds of thousands of pounds saved

by National Power and PowerGen


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The SEPCA System

Developed by the National Ecological Institute of Mexico, and the US Air Force

Monitoring of air quality in Mexico City Data from 25 monitoring stations

located around Metropolitan Zone of Mexico City (MZMC)

Measure general air conditions and specific pollutants (ozone, carbon monoxide, etc etc….lots of information)


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SEPCA Approach

Uses meteorological data to forecast air quality information

Performs: quantitative analysis -levels of pollutant qualitative analysis - graphical interface

showing forecast air quality against allowable bands and alarms

Being expanded to include photo-chemistry data


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Benefits of SEPCA

Improvements in information available to meteorologists

Improved ability to warn public of bad air quality events

Improved ability to identify particular problem areas

Ability to see patterns and trends in pollution


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Computer Aided Design

Two systems developed by universities in Hong Kong

Floor Plan Design Expert (FPDX) Interior Design Expert (IDX) Linked with CAD systems


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FPDX

FPDX used by architects to evaluate whether an apartment building floor plan adheres to government requirements and standards

Very high overhead on regulations Regulations often required subjective

interpretation Need faster, more consistent decisions Automated from drawings


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IDX

IDX analyses design based on a set of design principles

Gives suggestions for improvements Helps designer with:

spatial relationships of objects basic design guidelines regulations and standards health and safety issues


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Benefits

Quick decisions Efficient design Regulation compliance Health and safety benefits Consistency!


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NUTRICON

Developed at East Texas State University

Nutrition consultant expert system Used by nutrition consultants,

dieticians, health care professionals Graphical interface for user input, linked

to database of stored domain knowledge


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NUTRICON Approach

Has a knowledge base of nutrients present in thousands of food items

Has rules on Recommended Daily Allowances (RDAs) for different age groups, different sexes, different lifestyle requirements

Highlights problems, deficiencies, and recommends remedial actions


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Benefits

Simplifies a very complex alternatives dependent upon age, sex, lifestyle

Remedial actions tailored to the individual suggested menus etc

Can easily be used by non-experts in nutrition to give advice to patients

Consistent and traceable


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Advising the Baker

Developed at the Flour Milling and Baking Research Association, England

Designed to help bakers to: optimise product quality improve operational use of retarding

equipment (basically to control the yeast activity in the dough)

Allows either manual or automatic operation of equipment


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Retarding Advisor

Rule base of complex relationships between ingredients, formulations, dough process and retarding process

Includes a “What If?” capability - lets the user see the outcome of scenarios (both ingredients and plant settings)

Advises on plant settings and ingredients Plant settings can be automatically

downloaded to the machines


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Benefits

Helps the baker to make better bread!! Better product quality, more consistent,

less waste Efficient use of plant - more throughput Improved knowledge of the baking

process itself Spin-off benefit - training and education

of machine operators


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Investigators’ Notebook

Developed by the Ottowa Police Service, Canada

Supports investigations of residential break and entry incidents

Motivation is the vast amount of information gathered by the police during investigations

Used as a pilot study to show how ES could be used throughout police service


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Investigators’ Notebook

Large set of historical data available Used in conjunction with new incidents

to carry out knowledge acquisition and modelling of break and enter events, suspect profiles etc

KA process led to modification and standardisation of documentation of incidents

Allows links to other cases


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Benefits Makes information easily accessible

previously held only in reports

Standardises “best practice” approach to investigation

Allows trending and linking with other cases in vicinity/similar case parameters

Links with previous offenders Generates list of suspects Graphic display capability


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Conclusions

Very varied!! Potential for applications in most

domains However successful applications have

been “scoped” well definition of the area of the knowledge

domain to be tackled

Feasibility rules apply in all cases

COM362 Knowledge Engineering Modern Case Studies 1 John MacIntyre 0191 515 3778...

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