Sliding window for alert generation
First Claim
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1. A method for generating alerts from a periodically sampled system, comprising:
- maintaining a sampling window having a predefined number of most-recently collected samples;
calculating an alert value, said alert value representing a ratio of a first value to a total number of samples in said sampling window, said first value representing a total number of samples in said sampling window having parameters exceeding a predefined sample alert threshold; and
generating a first alert if said alert value exceeds a predefined alert threshold, wherein said first alert is generated for a sampling period that results in said alert value exceeding said predefined alert threshold only if an alert is not generated in an immediately preceding sampling period.
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Abstract
A method for generating alerts from a periodically sampled system is disclosed. The method includes maintaining a sampling window having a predefined number of most-recently collected samples. The method further includes calculating an alert value, the alert value representing a ratio of a first value to a total number of samples in the sampling window, the first value representing a total number of samples in the sampling window having parameters exceeding a predefined sample alert threshold. The method additionally includes generating a first alert if the alert value exceeds a predefined alert threshold.
43 Citations
19 Claims
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1. A method for generating alerts from a periodically sampled system, comprising:
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maintaining a sampling window having a predefined number of most-recently collected samples; calculating an alert value, said alert value representing a ratio of a first value to a total number of samples in said sampling window, said first value representing a total number of samples in said sampling window having parameters exceeding a predefined sample alert threshold; and generating a first alert if said alert value exceeds a predefined alert threshold, wherein said first alert is generated for a sampling period that results in said alert value exceeding said predefined alert threshold only if an alert is not generated in an immediately preceding sampling period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An article of manufacture comprising a program storage medium having computer readable code embodied therein, said computer readable code being configured to generate alerts from a periodically sampled system, comprising:
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computer readable code for maintaining a sampling window having a predefined number of most-recently collected samples; computer readable code for calculating an alert value, said alert value representing a ratio of a first value to a total number of samples in said sampling window, said first value representing a total number of samples in said sampling window having parameters exceeding a predefined sample alert threshold; and computer readable code for generating a first alert if said alert value exceeds a predefined alert threshold, wherein said first alert is generated for a sampling period that results in said alert value exceeding said predefined alert threshold only if an alert is not generated in an immediately preceding sampling period. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for fine-tuning an alert signal obtained from a periodically sampled system, comprising:
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providing an alert signal generator, said alert signal generator having first logic for maintaining a sampling window at a constant window size, said sampling window containing most-recently collected samples, second logic for calculating an alert value, said alert value representing a ratio of a first value to a total number of samples in said sampling window, said first value representing a total number of samples in said sampling window having parameters exceeding a sample alert threshold, and third logic for generating a first alert if said alert value exceeds an alert threshold, wherein said first alert is generated for a sampling period that results in said alert value exceeding said alert threshold only if an alert is not generated in an immediately preceding sampling period; and providing a control panel having a plurality of user-manipulable controls, said plurality of user-manipulable controls including at least one of a first control for varying said window size, a second control for varying said sample alert threshold, and a third control for varying said alert threshold. - View Dependent Claims (18, 19)
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Specification