Estimation of abnormal sensors
First Claim
1. An apparatus comprising:
- a memory device having program code stored thereon; and
at least one processor operatively coupled to the memory device and operable to execute program code stored on the memory device to;
calculate, for each of a plurality of sensor groups that each include at least two sensors among a plurality of sensors, a degree of outlierness of target data serving as an examination target relative to a reference data distribution of output from the sensor group; and
estimate at least one sensor among the plurality of sensors to be a source of outlierness, based on a comparison of the degrees of outlierness of the sensor groups that include the at least one sensor to the degrees of outlierness of the sensor groups that lack the at least one sensor.
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Accused Products
Abstract
Provided is an estimation apparatus including a memory device having program code stored thereon, and at least one processor operatively coupled to the memory device. The at least one processor is operable to execute program code stored on the memory device to calculate, for each of a plurality of sensor groups that each include two sensors among a plurality of sensors, a degree of outlierness of target data serving as an examination target relative to a reference data distribution of output from the sensor group, and to estimate a sensor among the plurality of sensors to be a source of outlierness, based on a comparison of the degrees of outlierness of the sensor groups that include the at least one sensor to the degrees of outlierness of the sensor groups that lack the at least one sensor.
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Citations
20 Claims
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1. An apparatus comprising:
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a memory device having program code stored thereon; and at least one processor operatively coupled to the memory device and operable to execute program code stored on the memory device to; calculate, for each of a plurality of sensor groups that each include at least two sensors among a plurality of sensors, a degree of outlierness of target data serving as an examination target relative to a reference data distribution of output from the sensor group; and estimate at least one sensor among the plurality of sensors to be a source of outlierness, based on a comparison of the degrees of outlierness of the sensor groups that include the at least one sensor to the degrees of outlierness of the sensor groups that lack the at least one sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus comprising:
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a memory device having program code stored thereon; and at least one processor operatively coupled to the memory device and operable to execute program code stored on the memory device to; generate, for each of a plurality of sensor groups that each include at least two sensors among a plurality of sensors, a reference data distribution of output from the sensor group based on reference data serving as a reference for output of the plurality of sensors; and output the reference data distribution generated for each of the sensor groups, to be used by an apparatus that calculates, for each of the plurality of sensor groups, a degree of outlierness of target data serving as an examination target output from the plurality of sensors relative to the reference data distribution, and estimate sensors that are sources of outlierness.
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17. A method comprising:
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calculating, for each of a plurality of sensor groups that each include at least sensors among a plurality of sensors, a degree of outlierness of target data serving as an examination target relative to a reference data distribution of output from the sensor group; and estimating at least one sensor among the plurality of sensors to be a source of outlierness, based on a comparison of the degrees of outlierness of the sensor groups that include the at least one sensor to the degrees of outlierness of the sensor groups that lack the at least one sensor. - View Dependent Claims (18)
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19. A computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code executable by a computer to cause the computer to perform operations comprising:
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calculating, for each of a plurality of sensor groups that each include at least two sensors among a plurality of sensors, a degree of outlierness of target data serving as an examination target relative to a reference data distribution of output from the sensor group; and estimating at least one sensor among the plurality of sensors to be a source of outlierness, based on a comparison of the degrees of outlierness of the sensor groups that include the at least one sensor to the degrees of outlierness of the sensor groups that lack the at least one sensor.
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20. A computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code executable by a computer to cause the computer to perform operations comprising:
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generating, for each of a plurality of sensor groups that each include at least two sensors among the plurality of sensors, a reference data distribution of output from the sensor group based on reference data serving as a reference for output of the plurality of sensors; and outputting the reference data distribution generated for each of the sensor groups, the reference data distribution being output for calculating, for each of the plurality of sensor groups, a degree of outlierness of target data serving as an examination target output from the plurality of sensors relative to the reference data distribution, and estimate sensors that are sources of outlierness.
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Specification