Inspection system for decision making support
An inspection system includes: an identification model learning means that performs machine-learning of a model identifying the type of a target object from time-series data representing the movement trajectory of the target object obtained by observation; a confidence level prediction model learning means that performs machine-learning of a confidence level prediction model estimating the confidence level of an estimation result by the identification model from the observation specification of time-series data representing the movement trajectory of a target object; and a determining means that uses the learned identification model to estimate the type of a target object from the movement trajectory of the target object obtained by observation, and uses the learned confidence level prediction model to predict the confidence level of an estimation result by the identification model from the observation specification of the time-series data.
1 . An inspection apparatus comprising:
a memory containing program instructions; and
a processor coupled to the memory, wherein the processor is configured to execute the program instructions to:
learn, by using first training data, an identification model estimating a type of a target object from time-series data, representing a movement trajectory of the target object obtained by observation, the first training data including time-series data representing a movement trajectory of a target object obtained by observation and a type of the target object;
learn, by using second training data, a confidence level prediction model predicting a confidence level of an estimation result by the identification model from an observation specification of time-series data representing a movement trajectory of a target object obtained by observation, the second training data including time-series data representing a movement trajectory of a target object obtained by observation, an observation specification thereof, and a type of the target object; and
estimate, by using the learned identification model, a type of a target object from time-series data representing a movement trajectory of the target object obtained by observation, and predict, by using the learned confidence level prediction model, a confidence level of an estimation result by the identification model from an observation specification of the time-series data.
2 . The inspection apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to:
when a type of a target object estimated from the time-series data in the second training data by using the learned identification model does not coincide with the type of the target object in the second training data, acquire a confidence level to be a lower value compared with when coincide; and
learn the confidence level prediction model by using third training data including the acquired confidence level and the observation specification in the second training data.
3 . The inspection apparatus according to claim 1 , wherein
the observation specification includes at least one of a length of the movement trajectory, a size of the target object, start time of the movement trajectory, an observation place of the movement trajectory, and a quality of the time-series data.
4 . The inspection apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to
modify a result of determination of the type of the target object based on a result of determination of the confidence level.
5 . The inspection apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to
learn the confidence level prediction model by using a predetermined output obtained by inputting the time-series data in the second training data into the learned identification model.
6 . The inspection apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to
further learn the learned identification model by using the confidence level predicted by the learned confidence degree prediction model for control of learning.
7 . The inspection apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to:
convert the second training data to a plurality of new training data, each of the new training data including one time-series data after conversion of the time-series data in the second training data to a plurality of new time-series data, the type of the target object in the second training data, and an observation specification of the one time-series data; and
learn the confidence level prediction model by using the new training data.
8 . The inspection apparatus according to claim 7 , wherein the processor is further configured to execute the instructions to
perform machine-learning of the confidence level prediction model by using an identification result obtained by inputting the time-series data in the new training data into the learned identification model.
9 . An inspection method comprising:
by a processor, learning, by using first training data, an identification model estimating a type of a target object from time-series data representing a movement trajectory of the target object obtained by observation, the first training data including time-series data representing a movement trajectory of a target object obtained by observation and a type of the target object;
by the processor, learning, by using second training data, a confidence level prediction model predicting a confidence level of an estimation result by the identification model from an observation specification of time-series data representing a movement trajectory of a target object obtained by observation, the second training data including time-series data representing a movement trajectory of a target object obtained by observation, an observation specification thereof, and a type of the target object; and
by the processor, estimating, by using the learned identification model, a type of a target object from time-series data representing a movement trajectory of the target object obtained by observation, and predicting, by using the learned confidence level prediction model, a confidence level of an estimation result by the identification model from an observation specification of the time-series data.
10 . A non-transitory computer-readable recording medium having a program recorded thereon, the program comprising instructions for causing a computer to execute processes to:
learn, by using first training data, an identification model estimating a type of a target object from time-series data representing a movement trajectory of the target object obtained by observation, the first training data including time-series data representing a movement trajectory of a target object obtained by observation and a type of the target object;
learn, by using second training data, a confidence level prediction model predicting a confidence level of an estimation result by the identification model from an observation specification of time-series data representing a movement trajectory of a target object obtained by observation, the second training data including time-series data representing a movement trajectory of a target object obtained by observation, an observation specification thereof, and a type of the target object; and
estimate, by using the learned identification model, a type of a target object from time-series data representing a movement trajectory of the target object obtained by observation, and predict, by using the learned confidence level prediction model, a confidence level of an estimation result by the identification model from an observation specification of the time-series data.