WO2016038803A1 - 情報処理装置、情報処理方法、及び、記録媒体 - Google Patents
情報処理装置、情報処理方法、及び、記録媒体 Download PDFInfo
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- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0766—Error or fault reporting or storing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3006—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system is distributed, e.g. networked systems, clusters, multiprocessor systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3447—Performance evaluation by modeling
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3476—Data logging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3495—Performance evaluation by tracing or monitoring for systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
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Definitions
- the present invention relates to an information processing apparatus, an information processing method, and a recording medium.
- Patent Document 1 describes an example of an operation management apparatus that models a system using time series information of system performance and monitors the system using a generated model.
- the operation management apparatus described in Patent Document 1 determines a correlation function indicating a correlation of each pair of a plurality of metrics based on measurement values of a plurality of metrics of the system, and generates a system model.
- the operation management apparatus detects an abnormality of the system by determining whether or not the new measurement value of the metric follows the correlation in the generated model.
- Patent Document 1 In an operation management apparatus such as Patent Document 1, it is necessary to perform monitoring by using an appropriate model according to the operating state of the system.
- Patent Literature 2 discloses a monitoring control system that switches a model for predicting the occurrence of a bottleneck by using a system configuration change instruction as a trigger Is disclosed.
- Patent Document 3 discloses an operation management apparatus that switches models based on a calendar such as a day of the week.
- Patent Document 4 discloses a process monitoring device that performs process abnormality diagnosis by combining diagnosis results of a plurality of models.
- the appropriate model differs for each chemical reaction process and stage. Furthermore, in each process, the appropriate model varies depending on the progress of the reaction after the chemical is added, before the start of the reaction, during the reaction, and after the end of the reaction. Moreover, in each process, opening and closing of a valve and administration of a medicine are performed manually and irregularly. For this reason, in a chemical plant, the timing which switches an appropriate model cannot be acquired based on the specific trigger and calendar from the outside. When such a plant system is monitored by an operation management device such as that disclosed in Patent Document 1, it is difficult to monitor using an appropriate model according to the operating state of the system.
- An object of the present invention is to provide an information processing apparatus, an information processing method, and a recording medium that can solve the above-described problems and can monitor the system with an appropriate model according to the operating state of the system.
- An information processing apparatus is a monitoring apparatus newly acquired by a model storage unit that stores a plurality of models related to monitoring data of a system, and a main model that is one of the plurality of models.
- a model storage unit that stores a plurality of models related to monitoring data of a system
- a main model that is one of the plurality of models.
- an abnormality is detected for newly acquired monitoring data using a main model that is one of a plurality of models related to monitoring data of the system, and the abnormality is detected using the main model.
- the abnormality is detected for the newly acquired monitoring data, and if the other model does not detect an abnormality, the other model is The main model is set for the monitoring data acquired after the next time.
- a computer detects abnormality in newly acquired monitoring data using a main model that is one of a plurality of models related to system monitoring data.
- a main model that is one of a plurality of models related to system monitoring data.
- the abnormality is detected for the newly acquired monitoring data by another model of the plurality of models, and no abnormality is detected by the other model
- a program for executing the processing for setting the other model as the main model for the monitoring data acquired from the next time on is stored.
- the effect of the present invention is that the system can be monitored with an appropriate model according to the operating state of the system.
- FIG. 2 is a block diagram showing the configuration of the operation management apparatus 100 in the first embodiment of the present invention.
- the operation management apparatus 100 is an embodiment of the information processing apparatus of the present invention.
- the operation management apparatus 100 is connected to the monitored system 500 (or simply a system) via a network or the like.
- the monitored system 500 is a plant system such as a chemical plant or a steel plant, for example.
- the monitored system 500 may be a structure such as a bridge.
- the monitored system 500 may be an IT system including one or more computers.
- the monitored system 500 measures the value of an index (metric) indicating the status and performance of a plurality of types of monitoring targets in the system at regular intervals, and transmits it to the operation management apparatus 100.
- index indicating the status and performance of a plurality of types of monitoring targets in the system at regular intervals
- power, voltage, current, temperature, pressure, vibration, or the like measured by various sensors is used as the item to be monitored.
- CPU Central Processing Unit
- memory usage rate memory usage rate, disk access frequency, etc.
- the usage rate, usage amount, etc. of computer resources and network resources may be used.
- the measurement values of a plurality of types of monitoring targets are referred to as monitoring data.
- the operation management apparatus 100 includes an analysis unit 110, a data storage unit 120, and a result output unit 130.
- the analysis unit 110 performs various processes related to analysis of monitoring data received from the monitored system 500.
- the data storage unit 120 stores time series of monitoring data received from the monitored system 500 and various histories related to analysis of the monitoring data.
- the result output unit 130 outputs an abnormality notification when an abnormality of the monitored system 500 is detected. Further, the result output unit 130 outputs various histories related to the analysis of the monitoring data stored in the data storage unit 120.
- the analysis unit 110 includes a model generation unit 111, an analysis processing unit 112, and a model switching unit 113.
- the model generation unit 111 generates a plurality of monitoring models from the time series of the monitoring data, and stores them in the model storage unit 121.
- the analysis processing unit 112 performs abnormality detection on newly acquired monitoring data using a main model selected from a plurality of models. In addition, when an abnormality is detected by the main model, the analysis processing unit 112 performs abnormality detection on the monitoring data using a sub model that is a model other than the main model among the plurality of models.
- the model switching unit 113 switches the main model based on the determination result of abnormality detection by the main model and the sub model.
- the data storage unit 120 includes a model storage unit 121, a model use history storage unit 122, a model switching history storage unit 123, an abnormality detection history storage unit 124, and a monitoring data storage unit 125.
- the model storage unit 121 stores a plurality of models generated by the model generation unit 111.
- the model usage history storage unit 122 stores a model usage history 222.
- the model usage history 222 indicates the usage history of the main model by the analysis processing unit 112.
- the model switching history storage unit 123 stores the model switching history 223.
- the model switching history 223 indicates a main model switching history by the model switching unit 113.
- the abnormality detection history storage unit 124 stores the abnormality detection history 224.
- the abnormality detection history 224 indicates the abnormality detection history of the monitored system 500 in association with the main model at the time of abnormality detection.
- the monitoring data storage unit 125 stores a time series of monitoring data acquired from the monitored system 500.
- the operation management apparatus 100 may be a computer that includes a CPU and a storage medium that stores a program, and operates by control based on the program.
- FIG. 3 is a block diagram showing a configuration of the operation management apparatus 100 realized by a computer according to the first embodiment of the present invention.
- the operation management apparatus 100 includes a CPU 101, a storage unit (storage medium) 102 such as a hard disk and a memory, a communication unit 103 that performs data communication with other devices, an input unit 104 such as a keyboard, and an output unit 105 such as a display. Including.
- the CPU 101 executes computer programs for realizing the functions of analysis unit 110 and result output unit 130.
- the storage unit 102 stores information stored in the data storage unit 120.
- the communication unit 103 receives monitoring data from the monitored system 500.
- the input unit 104 receives a monitoring instruction for the monitored system 500 from a user or the like.
- the output unit 105 outputs (displays) an abnormality notification to the user or the like.
- the output unit 105 outputs (displays) the output screen 131 to the user or the like.
- model storage unit 121 the model use history storage unit 122, the model switching history storage unit 123, the abnormality detection history storage unit 124, and the monitoring data storage unit 125 of the data storage unit 120 may be stored on individual storage media. It may be configured by one storage medium.
- the analysis unit 110, the data storage unit 120, and the result output unit 130 may be configured by different devices.
- each component of the operation management apparatus 100 may be an independent logic circuit.
- the operation will be described by taking as an example a case where the monitored system 500 is modeled by a correlation model representing a correlation (relationship) between a plurality of types of monitoring targets (metrics).
- the monitored system 500 measures the values of a plurality of types of monitoring targets at regular intervals and transmits them as monitoring data to the operation management apparatus 100.
- the time series of the monitoring data received from the monitored system 500 is stored in the monitoring data storage unit 125.
- FIG. 4 is a flowchart showing the processing of the operation management apparatus 100 in the first embodiment of the present invention.
- the model generation unit 111 generates a plurality of models based on the time series of monitoring data stored in the monitoring data storage unit 125 (step S101).
- the model generation unit 111 stores the generated plurality of models in the model storage unit 121.
- the model generation unit 111 is based on the time series of the monitoring data stored in the monitoring data storage unit 125 during the normal period (normal time) stored in the monitoring data storage unit 125, as in the operation management apparatus of Patent Document 3.
- a plurality of correlation models including one or more correlations between monitoring data items are generated.
- the model generation unit 111 generates a correlation model for each of a plurality of operating states (processes) of the monitored system 500 using a normal time series of the operating states (processes). For example, a user or the like inputs which time series of monitoring data corresponds to which operating state (process).
- the model generation unit 111 generates model information 221 that associates each operating state (process) with the generated correlation model, and stores the model information 221 together with the correlation model.
- FIG. 5 is a diagram showing an example of the model information 221 in the first embodiment of the present invention.
- the model generation unit 111 generates correlation models A, B, and C for the processes a, b, and c of the monitored system 500, and generates model information 221 as shown in FIG. To do.
- the model generation unit 111 may generate a correlation model without associating it with the operating state of the monitored system 500.
- the model generation unit 111 may generate a correlation model using a time series for each period (for example, one day or one hour) of a predetermined length in the time series of normal monitoring data.
- the predetermined length is set to be shorter than the length of the period during which the monitored system 500 continues each operation state.
- the model generation unit 111 may aggregate similar correlation models into one model among the plurality of generated correlation models.
- the analysis processing unit 112 selects any one of the plurality of models generated in step S101 and sets it as the main model (step S102).
- the analysis processing unit 112 sets a model other than the main model as a sub model.
- the analysis processing unit 112 sets the correlation model A as a main model and the correlation models B and C as sub models.
- the analysis processing unit 112 reads out newly acquired monitoring data from the monitoring data storage unit 125 (step S103).
- the analysis processing unit 112 applies the read monitoring data to the main model, and performs abnormality detection using the main model (step S104).
- FIG. 6 is a diagram showing an example of abnormality detection processing by each model in the first embodiment of the present invention.
- the analysis processing unit 112 applies the monitoring data at the time “2014/01/10 15:00” in FIG. 6 to the correlation model A and performs abnormality detection.
- the analysis processing unit 112 for example, in the same manner as the operation management apparatus described in Patent Document 1, the number of correlation destruction (correlation destruction) included in the correlation model and the correlation in which the correlation destruction is detected.
- the prediction error the magnitude of correlation destruction
- the analysis processing unit 112 records the usage history of the main model in the model usage history 222.
- FIG. 7 is a diagram showing an example of the model use history 222 in the first embodiment of the present invention.
- the analysis processing unit 112 records the use history of the correlation model A at the time “15:00” in the model use history 222 as shown in FIG.
- step S104 If no abnormality is detected in step S104 (step S105 / N), the analysis processing unit 112 periodically repeats the processing from step S103.
- the analysis processing unit 112 applies the monitoring data at the next time “15:10” to the correlation model A and performs abnormality detection.
- the analysis processing unit 112 records the usage history of the correlation model A at the time “15:10” in the model usage history 222 as shown in FIG.
- the analysis processing unit 112 applies the monitoring data at the next time “15:20” to the correlation model A and performs abnormality detection. .
- the analysis processing unit 112 records the usage history of the correlation model A at the time “15:20” in the model usage history 222 as shown in FIG.
- step S105 When an abnormality is detected in step S105 (step S105 / Y), the model switching unit 113 selects one of the submodels and instructs the analysis processing unit 112 to detect an abnormality using the submodel (step S106). .
- the analysis processing unit 112 applies the monitoring data used in step S104 to the sub model selected in step S106, and performs abnormality detection using the sub model (step S107).
- the model switching unit 113 repeats the processing from step S106 for all submodels (step S108).
- the analysis processing unit 112 applies the monitoring data at the time “15:20” to the correlation models B and C and performs abnormality detection. .
- the model switching unit 113 determines whether an abnormality is detected by all the submodels (step S109).
- step S109 determines that an abnormality of the monitored system 500 is detected.
- the model switching unit 113 outputs an abnormality notification to the user or the like through the result output unit 130 (step S110).
- the model switching unit 113 records the abnormality detection history of the monitored system 500 in the abnormality detection history 224.
- the model switching unit 113 determines that an abnormality of the monitored system 500 has been detected.
- FIG. 8 is a diagram showing an example of the abnormality detection history 224 in the first embodiment of the present invention.
- the model switching unit 113 adds the abnormality detection history of the monitored system 500 at time “15:20” to the abnormality detection history 224 as shown in FIG.
- step S109 When there is a sub model in which no abnormality is detected in step S109 (step S109 / N), the model switching unit 113 does not match the current main model with the current operating state of the monitored system 500, and the main model is switched. Judge as necessary.
- the model switching unit 113 sets a sub model in which no abnormality is detected as a new main model (step S111).
- the model switching unit 113 sets a model other than the new main model as a new sub model.
- the model switching unit 113 records the main model switching history in the model switching history 223.
- the model switching unit 113 may set a submodel whose degree of match is larger than the other submodels as a new main model.
- the degree of coincidence is determined so as to increase as the number of correlation destruction or the magnitude of correlation destruction decreases.
- the model switching unit 113 determines that the main model needs to be switched.
- the model switching unit 113 sets the correlation model B as a new main model and the correlation models A and C as sub models.
- FIG. 9 is a diagram showing an example of the model switching history 223 in the first embodiment of the present invention.
- the analysis processing unit 112 adds the main model switching history “correlation model A ⁇ B” at the time “16:00” to the model switching history 223 as shown in FIG.
- step S103 the processing from step S103 is repeated.
- the main model is switched from the correlation model B to the correlation model C.
- an abnormality in monitored system 500 is detected.
- the main model is switched from the correlation model C to the correlation model A.
- the model usage history 222, the abnormality detection history 224, and the model switching history 223 are detected in the main model usage history and the abnormality detection of the monitored system 500 as shown in FIG. 7, FIG. 8, and FIG. A history and a switching history of the main model are recorded.
- the result output unit 130 outputs the model use history 222, the model switching history 223, and the abnormality detection history 224 stored in the data storage unit 120 in response to a request from the user or the like.
- FIG. 10 is a diagram showing an example of the output screen 131 in the first embodiment of the present invention.
- the output screen 131 includes a model usage history display area 132, a model switching history display area 133, and an abnormality detection history display area 134.
- the model usage history display area 132 shows the usage history of the main model up to the present in the model usage history 222.
- the model switching history display area 133 shows a main model switching history in the model switching history 223.
- the abnormality detection history display area 134 shows the abnormality detection history of the monitored system 500 in the abnormality detection history 224 in association with the main model at the time of abnormality detection.
- the result output unit 130 displays the operating state (process) corresponding to each correlation model indicated by the model information 221 in the model use history display area 132, the model switching history display area 133, and the abnormality detection history display area 134. , It may be output in association with the correlation model.
- the user can grasp the current system process.
- the user or the like compares the time length required for each normal process with the time length of the process corresponding to each correlation model displayed in the model usage history display area 132, so that each process of the system is performed normally. You can see if you are. Further, the user or the like compares the transition of each process at normal time with the transition of the process corresponding to each correlation model displayed in the model switching history display area 133, and the transition of each process of the system is normally performed. I can grasp whether or not. In addition, the user or the like can grasp in which process the system abnormality is detected.
- the result output unit 130 displays the input time length and the time of each process in the model usage history display area 132.
- the comparison result with the length may be output to the model use history display area 132.
- the result output unit 130 determines the order of input and the transition order of each process in the model switching history display area 133.
- the comparison result may be output to the model switching history display area 133.
- FIG. 1 is a block diagram showing a characteristic configuration of the first embodiment of the present invention.
- the operation management apparatus 100 (information processing apparatus) according to the first embodiment of the present invention includes a model storage unit 121 and an analysis unit 110.
- the model storage unit 121 stores a plurality of models related to monitoring data of the monitored system 500 (system).
- the analysis unit 110 performs abnormality detection on newly acquired monitoring data using a main model which is one of a plurality of models.
- a main model which is one of a plurality of models.
- the analysis unit 110 performs abnormality detection on the newly acquired monitoring data using another model (sub model). If no abnormality is detected by the other model, the analysis unit 110 sets the other model as a main model for monitoring data acquired from the next time onward.
- the system can be monitored with an appropriate model corresponding to the operating state of the system.
- the reason is that when the abnormality is detected by the main model and the abnormality is not detected by the other model, the analysis unit 110 sets the other model as the main model for the monitoring data acquired from the next time. . This can reduce false alarms that occur when the system is monitored using an inappropriate model.
- the current operating state (process) of the system can be grasped.
- the reason is that the result output unit 130 outputs the operating state (process) corresponding to the current main model in the model usage history display area 132.
- the result output unit 130 outputs the operating state (process) corresponding to each model used as the main model in the model usage history display area 132 and the model switching history display area 133 in association with the model. It is.
- the result output unit 130 outputs the operating state (process) corresponding to the main model at the time of abnormality detection in the abnormality detection history display area 134.
- the system to be monitored is a plant such as a chemical manufacturing plant
- a plant such as a chemical manufacturing plant
- a raw material is heated at a predetermined temperature, or a predetermined pressure is applied to the raw material, thereby promoting the reaction and generating a desired product with high purity. For this reason, adjustments such as opening and closing of the valve are appropriately performed.
- the temperature and pressure of each part of the plant can be acquired by a sensor, and it is considered that a certain relationship is maintained between each temperature and pressure in normal operation. Further, opening and closing of the valve affects the temperature and pressure, and such a relationship is considered to change according to the state of the valve. However, the opening and closing of the valve is performed, for example, to adjust the reaction rate of the product or to operate safely within the specified value of the plant. Even if the relationship changes, the relationship before and after the change is different. Both are considered to be relationships that hold in normal operating conditions.
- the monitored system 500 in FIG. 2 is a plant such as the above-described chemical manufacturing plant.
- the monitored system 500 (plant) measures the measurement values of a plurality of types of sensors (for example, temperature sensors and pressure sensors) at regular intervals (for example, every minute), and uses the operation management apparatus 100 as monitoring data. Send to.
- the time series of the monitoring data received from the monitored system 500 is stored in the monitoring data storage unit 125.
- the model generation unit 111 Based on the time series of the monitoring data stored in the monitoring data storage unit 125, the model generation unit 111 generates a model for each of a plurality of processes in the plant using the time series at the normal time of the process. .
- the model generation unit 111 may generate a model using, for example, a time series for every day or every hour.
- the system to be monitored is a moving body such as an automobile, a motorcycle, a ship, or an airplane will be described as an example.
- the operation management apparatus 100 according to the first embodiment of the present invention to a mobile body that is normal but has a plurality of different operating states, it is possible to reduce false alarms in monitoring the mobile body. .
- the monitored system 500 in FIG. 2 is a moving body such as the automobile, motorcycle, ship, or airplane described above.
- the monitored system 500 (moving body) measures the measurement values of a plurality of types of sensors (for example, fuel sensors and speed sensors) at regular intervals (for example, every second), and uses the operation management apparatus as monitoring data. To 100. The time series of the monitoring data received from the monitored system 500 is stored in the monitoring data storage unit 125.
- the model generation unit 111 uses, for each of a plurality of operating states of the mobile body, a model when the operating state is normal. Is generated. Moreover, the model generation part 111 may generate
- a correlation model is used as an example of a model.
- another model based on a method well known in the field of statistical processing such as a probability model may be used as a model. Good.
- Operation management device 101 CPU DESCRIPTION OF SYMBOLS 102 Memory
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Abstract
Description
本発明の第1の実施の形態について説明する。
次に、本発明の第2の実施の形態について説明する。
次に、本発明の第3の実施の形態について説明する。
101 CPU
102 記憶手段
103 通信手段
104 入力手段
105 出力手段
110 分析部
111 モデル生成部
112 分析処理部
113 モデル切替部
120 データ格納部
121 モデル格納部
122 モデル使用履歴格納部
123 モデル切替履歴格納部
124 異常検出履歴格納部
125 監視データ格納部
130 結果出力部
131 出力画面
132 モデル使用履歴表示領域
133 モデル切替履歴表示領域
134 異常検出履歴表示領域
221 モデル情報
222 モデル使用履歴
223 モデル切替履歴
224 異常検出履歴
500 被監視システム
Claims (15)
- システムの監視データに係る複数のモデルを格納するモデル格納手段と、
前記複数のモデルの内の一のモデルであるメインモデルにより、新たに取得された監視データに対する異常検出を行い、当該メインモデルにより異常が検出された場合に、前記複数のモデルの内の他のモデルにより、当該新たに取得された監視データに対する異常検出を行い、当該他のモデルにより異常が検出されない場合、当該他のモデルを、次以降に取得される監視データに対する前記メインモデルに設定する、分析手段と、
を備えた情報処理装置。 - 前記分析手段は、前記複数のモデルの全てにより異常が検出された場合に、前記システムの異常が検出されたと判定する、
請求項1に記載の情報処理装置。 - 前記分析手段は、異常が検出されない前記他のモデルが複数存在する場合、当該複数の前記他のモデルの各々の、前記新たに取得された監視データに対する適合度をもとに、前記メインモデルに設定する前記他のモデルを決定する、
請求項1または2に記載の情報処理装置。 - 前記分析手段は、前記メインモデルとして設定されていたモデルの履歴を、設定されていた時間長とともに示すモデル使用履歴、前記メインモデルとして設定されていたモデルの履歴を、設定順序とともに示すモデル切替履歴、及び、前記システムの異常の検出履歴を、当該異常の検出時にメインモデルとして設定されていたモデルとともに示す異常検出履歴、の内の少なくとも一つを出力する、
請求項1乃至3のいずれかに記載の情報処理装置。 - 前記システムはプラントシステムであり、
前記複数のモデルは、前記プラントシステムの複数の工程に対して、それぞれ、生成され、
前記分析手段は、前記モデル使用履歴、前記モデル使用履歴、及び、前記異常検出履歴の内の少なくとも一つを、前記メインモデルとして設定されていたモデルに対応する前記プラントシステムの工程と関連付けて出力する、
請求項4に記載の情報処理装置。 - システムの監視データに係る複数のモデルの内の一のモデルであるメインモデルにより、新たに取得された監視データに対する異常検出を行い、
前記メインモデルにより異常が検出された場合に、前記複数のモデルの内の他のモデルにより、当該新たに取得された監視データに対する異常検出を行い、当該他のモデルにより異常が検出されない場合、当該他のモデルを、次以降に取得される監視データに対する前記メインモデルに設定する、
情報処理方法。 - さらに、前記複数のモデルの全てにより異常が検出された場合に、前記システムの異常が検出されたと判定する、
請求項6に記載の情報処理方法。 - 異常が検出されない前記他のモデルが複数存在する場合、当該複数の前記他のモデルの各々の、前記新たに取得された監視データに対する適合度をもとに、前記メインモデルに設定する前記他のモデルを決定する、
請求項6または7に記載の情報処理方法。 - さらに、前記メインモデルとして設定されていたモデルの履歴を、設定されていた時間長とともに示すモデル使用履歴、前記メインモデルとして設定されていたモデルの履歴を、設定順序とともに示すモデル切替履歴、及び、前記システムの異常の検出履歴を、当該異常の検出時にメインモデルとして設定されていたモデルとともに示す異常検出履歴、の内の少なくとも一つを出力する、
請求項6乃至8のいずれかに記載の情報処理方法。 - 前記システムはプラントシステムであり、
前記複数のモデルは、前記プラントシステムの複数の工程に対して、それぞれ、生成され、
前記モデル使用履歴、前記モデル使用履歴、及び、前記異常検出履歴の内の少なくとも一つを、前記メインモデルとして設定されていたモデルに対応する前記プラントシステムの工程と関連付けて出力する、
請求項9に記載の情報処理方法。 - コンピュータに、
システムの監視データに係る複数のモデルの内の一のモデルであるメインモデルにより、新たに取得された監視データに対する異常検出を行い、
前記メインモデルにより異常が検出された場合に、前記複数のモデルの内の他のモデルにより、当該新たに取得された監視データに対する異常検出を行い、当該他のモデルにより異常が検出されない場合、当該他のモデルを、次以降に取得される監視データに対する前記メインモデルに設定する、
処理を実行させるプログラムを格納する、コンピュータが読み取り可能な記録媒体。 - さらに、前記複数のモデルの全てにより異常が検出された場合に、前記システムの異常が検出されたと判定する、処理を実行させる、
請求項11に記載のプログラムを格納する、コンピュータが読み取り可能な記録媒体。 - 異常が検出されない前記他のモデルが複数存在する場合、当該複数の前記他のモデルの各々の、前記新たに取得された監視データに対する適合度をもとに、前記メインモデルに設定する前記他のモデルを決定する、処理を実行させる、
請求項11または12に記載のプログラムを格納する、コンピュータが読み取り可能な記録媒体。 - さらに、前記メインモデルとして設定されていたモデルの履歴を、設定されていた時間長とともに示すモデル使用履歴、前記メインモデルとして設定されていたモデルの履歴を、設定順序とともに示すモデル切替履歴、及び、前記システムの異常の検出履歴を、当該異常の検出時にメインモデルとして設定されていたモデルとともに示す異常検出履歴、の内の少なくとも一つを出力する、処理を実行させる、
請求項11乃至13のいずれかに記載のプログラムを格納する、コンピュータが読み取り可能な記録媒体。 - 前記システムはプラントシステムであり、
前記複数のモデルは、前記プラントシステムの複数の工程に対して、それぞれ、生成され、
前記モデル使用履歴、前記モデル使用履歴、及び、前記異常検出履歴の内の少なくとも一つを、前記メインモデルとして設定されていたモデルに対応する前記プラントシステムの工程と関連付けて出力する、処理を実行させる、
請求項14に記載のプログラムを格納する、コンピュータが読み取り可能な記録媒体。
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JP2018055567A (ja) * | 2016-09-30 | 2018-04-05 | 三菱重工業株式会社 | リスク評価装置、リスク変化量の評価方法及びプログラム |
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