Dynamic sensors apply to sets of fact instances that can change, such as all employees or queues starting with "S". They are identified with an asterisk in the fact name and can be created, deleted, or changed as conditions vary. Dynamic sensors can include both selection criteria to identify relevant facts and threshold rules. They allow monitoring situations that may involve different facts over time. The example shows creating a dynamic sensor to warn about employees over 200 pounds by selecting their weight facts and setting a threshold rule.

1. Creating and maintaining AutoPilot Dynamic
Sensors
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2. What is a Dynamic Sensor?
 A sensor that applies to a set of fact instances
 Examples: All employees, Queues beginning with ‘S’
 Identified by * in fact instance name in the sensor
 Created ‘dynamically’ as situation changes
 Important Features:
 Include both selection criteria and threshold rules
 Once created sensors can be deleted or changed as conditions change
 Can join one or more facts as long as fact names have same structure
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3. Example 1 “Employees”
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Bob
•Age=50
•Weight=189
•City=Seattle
•Sex=M
•Cholesterol=202
Tom
Age=45
Weight=202
City=Seattle
Sex=M
Cholesterol=194
John
Age=23
Weight=143
City=Chicago
Sex=M
Cholesterol=240
Louis
Age=54
Weight=205
City=Atlanta
Sex=M
Cholesterol=174
Sally
Age=53
Weight=135
City=Seattle
Sex=F
Cholesterol=195
Susan
Age=35
Weight=153
City=Atlanta
Sex=F
Cholesterol=179
Warn if employees
are over 200 lbs

4. Create a policy to…
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Select the facts required (weight)

5. Selection
 Employees over 200 pounds
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6. Sensor Rules
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7. The result
Bob
•Age=50
•Weight=189
•City=Seattle
•Sex=M
•Cholesterol=202
Tom
Age=45
Weight=202
City=Seattle
Sex=M
Cholesterol=194
John
Age=23
Weight=143
City=Chicago
Sex=M
Cholesterol=240
Louis
Age=54
Weight=205
City=Atlanta
Sex=M
Cholesterol=174
Sally
Age=53
Weight=135
City=Seattle
Sex=F
Cholesterol=195
Susan
Age=35
Weight=153
City=Atlanta
Sex=F
Cholesterol=179
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RESERVED.

8. Changing the sensor name
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9. Suppose Louis now loses weight?
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Bob
•Age=50
•Weight=189
•City=Seattle
•Sex=M
•Cholesterol=202
Tom
Age=45
Weight=202
City=Seattle
Sex=M
Cholesterol=194
John
Age=23
Weight=143
City=Chicago
Sex=M
Cholesterol=240 Louis
Age=54
Weight=199
City=Atlanta
Sex=M
Cholesterol=176
Sally
Age=53
Weight=135
City=Seattle
Sex=F
Cholesterol=195
Susan
Age=35
Weight=153
City=Atlanta
Sex=F
Cholesterol=179
Since Louis met
the criteria originally
he continues to
be watched..
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10. Expiring a dynamic sensor
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Now Louis will be
removed after 20
seconds..

11. Example 2
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Bob
•Age=50
•Weight=189
•City=Seattle
•Sex=M
•Cholesterol=202
Tom
Age=45
Weight=202
City=Seattle
Sex=M
Cholesterol=194
John
Age=23
Weight=143
City=Chicago
Sex=M
Cholesterol=240
Louis
Age=54
Weight=205
City=Atlanta
Sex=M
Cholesterol=174
Sally
Age=53
Weight=135
City=Seattle
Sex=F
Cholesterol=195
Susan
Age=35
Weight=153
City=Atlanta
Sex=F
Cholesterol=179
Warn if male
employees over 40
have cholesterol
over 190

12. The wrong way
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13. The right way
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14. Advanced: What if Tom leaves?
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In AutoPilot, this is equivalent to facts going away (becoming null)
Option 2 (if processing nulls)Option 1 (initial value requires SU13+)

15. Congratulations
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RESERVED.
You have now learned how to create and maintain
dynamic sensors.