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公开(公告)号：US20230069347A1
公开(公告)日：2023-03-02
申请号：US17697067
申请日：2022-03-17
申请人： Hitachi, Ltd.
发明人： Jana Backhus , Mineyoshi Masuda
摘要： Aspects relate to determining the presence or absence of concept drift in seasonal time series data. A concept drift detection device including a data input unit for receiving a time series data set that includes a set of past time series data and a set of current time series data, a baseline model generation unit for generating a baseline model based on a subset of the set of past time series data, a feature extraction unit for extracting a set of past data features, a set of baseline data features, and a set of current data features, a distance calculation unit for calculating a baseline distance and a current distance, and a concept drift detection unit for determining, based on a baseline statistic and the current distance, presence or absence of concept drift between the set of current time series data and the set of past time series data.
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公开(公告)号：US11474884B2
公开(公告)日：2022-10-18
申请号：US17192281
申请日：2021-03-04
申请人： HITACHI, LTD.
摘要： Provided are an event monitoring apparatus and an event monitoring method that make it possible to set a proper threshold without handling monitoring target systems on an individual basis.
There are included: a threshold determination program calculating degree of similarity between a ledger guide message and an event message, regarding a maximum value of the calculated degree of similarity as a first threshold, and setting a second threshold that is greater than the first threshold by a predetermined value; a ledger allocation program associating a ledger guide message having the degree of similarity intermediate between the first threshold and the second threshold with the event message; and a threshold evaluation program reporting the degree of similarity to a manager of a monitoring target system when the degree of similarity is higher than the first threshold.-
公开(公告)号：US09705772B2
公开(公告)日：2017-07-11
申请号：US14427954
申请日：2013-04-26
申请人： Hitachi, Ltd.
发明人： Mineyoshi Masuda , Kiyomi Wada , Jun Mizuno
CPC分类号： H04L43/0876 , G06F11/0709 , G06F11/079 , G06F11/3419 , G06F11/3452 , G06F2201/81 , G06F2201/835 , G06F2201/875 , H04L41/0631 , H04L43/0852 , H04L67/02 , H04L67/32
摘要： It is provided an identification apparatus is configured to: obtain, from a first request group, same-type requests which are of the same type as an investigation subject request in a first request group; obtain, other-type requests that have been transmitted from a first apparatus to a second apparatus and a response to which has been transmitted from the second apparatus to the first apparatus, during a processing period; generate, for the investigation subject request and each of the same-type requests; search the generated sets for sets that have the matching other-type requests, and remove one of the found sets; obtain second requests that have been processed by the second apparatus during the processing period from the second request group; calculate, for the investigation subject request and each of the same-type requests after the removal, values of correlation with the obtained second requests.
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公开(公告)号：US11762562B2
公开(公告)日：2023-09-19
申请号：US17194538
申请日：2021-03-08
申请人： Hitachi, Ltd.
CPC分类号： G06F3/0613 , G06F3/0635 , G06F3/0673 , G06F11/3409 , G06N5/04 , G06Q10/04
摘要： The present invention aims to specify a bottlenecked resource more accurately in an IT system.
In a performance analysis apparatus which includes a processing device, a storage device and an input/output interface and analyzes a performance of an IT system, the processing device creates an overall performance prediction model by using a nonlinear regression algorithm with a first overall performance value being set as an objective variable and with a first resource performance value being set as an explanatory variable, creates an explanatory model by inputting the overall performance prediction model and using an XAI technology and calculates a degree of per-resource influence on the overall performance value which is output by inputting a second resource performance value into the explanatory model.-
5.发明授权公开(公告)号：US11734063B2
公开(公告)日：2023-08-22
申请号：US17198730
申请日：2021-03-11
申请人： HITACHI, LTD.
发明人： Jun Kitawaki , Takashi Tameshige , Yasuyuki Tamai , Kouichi Murayama , Mineyoshi Masuda , Yosuke Himura
CPC分类号： G06F9/4881 , G06F9/5038
摘要： Execution end timing of a jobnet is predicted with stable accuracy. An information processing apparatus executes jobnet execution time prediction model generation processing for generating an execution time prediction model for predicting execution time of a jobnet to be executed on the basis of information associated with execution time of each of previously executed jobnets, a prediction model accuracy determination processing for calculating prediction accuracy for the execution time of each of jobnets by the generated execution time prediction model, and delay determination processing for determining whether to predict execution end timing of a designated jobnet among a jobnet group that is a set of a plurality of jobnets currently being executed or to be subsequently executed on the basis of the execution time prediction model, on the basis of the calculated prediction accuracy for the execution time of each of the jobnets.
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公开(公告)号：US20220334909A1
公开(公告)日：2022-10-20
申请号：US17681968
申请日：2022-02-28
申请人： Hitachi, Ltd.
IPC分类号： G06F11/07
摘要： To improve promptness of anomaly detection after occurrence of an event, provided is an anomaly detection apparatus including a processor that executes a program and a storage device that stores the program. The processor executes a correction process of applying a scale transformation to correct second predicted data in time-series first predicted data of a monitoring target, the second predicted data including data after occurrence time of a specific event, and a detection process of detecting an anomaly of the monitoring target based on the second predicted data corrected in the correction process and based on second measured data in time-series first measured data of the monitoring target, the second measured data including data after the occurrence time of the specific event.
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公开(公告)号：US11080126B2
公开(公告)日：2021-08-03
申请号：US16095015
申请日：2017-02-07
申请人： Hitachi, Ltd.
摘要： An apparatus for monitoring a computer system includes a data collecting unit that collects performance data on a plurality of performance items related to the performance of the computer system; a performance degradation cause model 30 in which a cause event and degradation performance items which are one or more performance items degraded by the cause event are associated with one another; and an outlier score calculator 50 that specifies a degree of deviation, when target performance data which is performance data of degradation performance items collected by the data collecting unit deviates from a normal range under a condition that the normal range of the performance data of the one or more degradation performance items for the cause event is predetermined, and outputs information on the cause event based on a temporal change in the degree of deviation.
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公开(公告)号：US10904159B2
公开(公告)日：2021-01-26
申请号：US16125984
申请日：2018-09-10
申请人： HITACHI, LTD.
发明人： Kiyomi Wada , Hironori Emaru , Mineyoshi Masuda
摘要： It is necessary to allocate sufficient surplus resources to each service in order to maintain a service level of each service, but, as a result, many resources which are not used may be necessary.
A resource allocation optimizing system performs, with respect to each of a plurality of services, a predictive judgement which is a determination of whether or not accurate prediction of a workload of the service is able to be anticipated, and controls allocation of a resource to the service on the basis of a result of the predictive judgement. With respect to each service, the predictive judgement is performed on the basis of at least one of (x) time-series measured workloads and time-series predicted workloads in a predefined period for the service and (y) at least one of a measured service level and a predicted service level in the predefined period for the service.-
公开(公告)号：US20190132256A1
公开(公告)日：2019-05-02
申请号：US16125984
申请日：2018-09-10
申请人： HITACHI, LTD.
发明人： Kiyomi Wada , Hironori Emaru , Mineyoshi Masuda
IPC分类号： H04L12/911 , H04L29/08 , H04L12/24 , G06N99/00
摘要： It is necessary to allocate sufficient surplus resources to each service in order to maintain a service level of each service, but, as a result, many resources which are not used may be necessary.A resource allocation optimizing system performs, with respect to each of a plurality of services, a predictive judgement which is a determination of whether or not accurate prediction of a workload of the service is able to be anticipated, and controls allocation of a resource to the service on the basis of a result of the predictive judgement. With respect to each service, the predictive judgement is performed on the basis of at least one of (x) time-series measured workloads and time-series predicted workloads in a predefined period for the service and (y) at least one of a measured service level and a predicted service level in the predefined period for the service.
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公开(公告)号：US09645877B2
公开(公告)日：2017-05-09
申请号：US14763957
申请日：2013-08-21
申请人： Hitachi, Ltd.
发明人： Kiyomi Wada , Mineyoshi Masuda , Yutaka Kudo
CPC分类号： G06F11/079 , G06F11/0721 , G06F11/0745 , G06F11/32 , G06F11/3419
摘要： Monitoring apparatus is configured to execute: obtaining pieces of information about access in a first time slot by specifying the first time slot including access to a first apparatus in the system where a response time is long; selecting a feature common to the access in the first time slot from the pieces of information about the access in the first time slot that have been obtained; first extracting from pieces of information about access in a given period of time, pieces of information about access that has the common feature selected as a feature common to the access in the first time slot; and first generating a first graph which shows changes with time in response time, based on the pieces of information about the access having the feature common to the access in the first time slot that have been extracted.
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