公开(公告)号：US20240362192A1

公开(公告)日：2024-10-31

申请号：US18440999

申请日：2024-02-14

Applicant: Hitachi, Ltd.

Inventor： Yoshiki KUROKAWA ,  Toshihiko KASHIYAMA ,  Norifumi NISHIKAWA ,  Mayuko OZAWA ,  Kazuhiko MOGI

IPC: G06F16/182 ,  G06F16/14 ,  G06F16/172 ,  G06F16/18 ,  G06F16/188

CPC classification number: G06F16/1844 ,  G06F16/144 ,  G06F16/172 ,  G06F16/1865 ,  G06F16/188

Abstract: An update method in which a computer updates data stored in a first storage device by copying a plurality of files stored in the first storage device to a second storage device and writing the files updated in the second storage device back to the first storage device, the plurality of files constituting a part of a database. The update method includes a query determination for determining whether a query for requesting writing to one of the files stored in the second storage device is based on a cluster key of the database, low-frequency file identification for identifying a file having a low writing frequency among the files stored in the second storage device, and write-back for writing the file having the low writing frequency identified in the low-frequency file identification to the first storage device.

公开(公告)号：US20240112815A1

公开(公告)日：2024-04-04

申请号：US18465001

申请日：2023-09-11

Applicant: Hitachi, Ltd.

Inventor： Giada CONFORTOLA ,  Mika TAKATA ,  Toshihiko KASHIYAMA

IPC: G16H50/30

CPC classification number: G16H50/30

Abstract: A system is configured to acquire, from history data, entity data similar to target entity data which is data including a feature value of each of plurality of features related to a target entity. The history data includes entity data for each of a plurality of entities at each past time point. For each entity, entity data at a past time point includes a feature value at the time point for each feature of the entity. The system is configured to create, for each controllable feature among the plurality of features related to the target entity, based on statistics of a plurality of feature values in related case data which is data including entity data similar to the target entity data, a proposal of a feature value change for reducing a risk predicted by inputting the target entity data to a prediction model. A user interface which displays the proposal.

公开(公告)号：US20230385297A1

公开(公告)日：2023-11-30

申请号：US18106679

申请日：2023-02-07

Applicant: Hitachi, Ltd.

Inventor： Garima NATANI ,  Satoshi KATSUNUMA ,  Toshihiko KASHIYAMA

IPC: G06F16/25 ,  G06F16/23

CPC classification number: G06F16/254 ,  G06F16/256 ,  G06F16/2379

Abstract: An information management apparatus is capable of reducing an effort for creating a rule for moving data stored in an OLTP database to an OLAP database, for example. A data movement optimization apparatus includes a table status update unit that acquires a table status in which data is stored for each of an OLTP database and an OLAP database selected from among a plurality of databases, a policy network learning unit that performs learning on the number of federated queries that are processing in which it is necessary to query both the OLTP database and the OLAP database for the table status, and a cost incurred when data is moved from the OLTP database to the OLAP database, and a data movement unit that performs control for moving data from the OLTP database to the OLAP database on the basis of a result of the learning and the table status.

公开(公告)号：US20220326680A1

公开(公告)日：2022-10-13

申请号：US17709611

申请日：2022-03-31

Applicant: Hitachi, Ltd.

Inventor： Masayuki SAKATA ,  Yoshinari HORI ,  Daisuke ITO ,  Toshihiko KASHIYAMA ,  Taisuke UETA ,  Masaaki IWASAKI

IPC: G05B19/4069

Abstract: A digital twin management system manages a virtual model that represents an actual physical system in a virtual space on a real-time basis. To generate an integrated virtual model by adding a second virtual model to a first virtual model, a processor of the digital twin system extracts multiple parts that can be used in common in the first virtual model and the second virtual model, generates multiple integrated virtual models that are candidates of an integrated virtual model by changing the extracted parts that can be used in common, calculates an evaluation of each of the generated integrated virtual models, and outputs configuration information regarding each of the integrated virtual model candidates and an evaluation of the integrated virtual model candidate in association with each other.

公开(公告)号：US20250110958A1

公开(公告)日：2025-04-03

申请号：US18903945

申请日：2024-10-01

Applicant: Hitachi, Ltd.

Inventor： Divya SINGH ,  Toshihiko KASHIYAMA ,  Tianben DING

IPC: G06F16/2453

Abstract: A query processing device that reduces the calculation cost for checking whether a query complies with restrictions. A query dividing section generates subqueries by dividing an input query for each of a plurality of organizations. A score computing section computes an organization score by evaluating an organization-specific risk that is the risk of determination that the subquery does not comply with organization rules of the organization corresponding to the subquery, on the basis of history information relating to a determination track record resulting from determining, regarding each organization, whether or not the input query complies with the organization rules of each organization. A subquery control section sequentially transmits the subqueries to rule check devices in transmission order according to the organization score, and response information is received regarding the subquery from the rule check devices. Whether the input query complies with restrictions is determined by using the response information.

公开(公告)号：US20240012818A1

公开(公告)日：2024-01-11

申请号：US18216709

申请日：2023-06-30

Applicant: Hitachi, Ltd.

Inventor： Tianben DING ,  Mika TAKATA ,  Toshihiko KASHIYAMA ,  Hiroaki MASUDA

IPC: G06F16/2455 ,  G06F16/242

CPC classification number: G06F16/24564 ,  G06F16/2425

Abstract: Provided are a data management apparatus, a data management system, and a data management method capable of creating an alternative for a useful query when a query for operating a database violates a data handling regulation of the database. When data scheduled to be generated based on the database by the query violates a rule that is the data handling regulation of the database, a data processing server generates an alternative query candidate to replace the query. The data processing server determines whether the alternative query candidate violates the rule by determining whether data scheduled to be generated based on the database by the alternative query candidate complies with the rule. When the alternative query candidate does not violate the rule, the data processing server proposes the alternative query candidate as an alternative query.

公开(公告)号：US20220398555A1

公开(公告)日：2022-12-15

申请号：US17683705

申请日：2022-03-01

Applicant: Hitachi, Ltd.

Inventor： Shotaro NODA ,  Jumpei OKOSHI ,  Toshihiko KASHIYAMA ,  Tsunehiko BABA

IPC: G06Q20/10 ,  G06Q20/06 ,  G06Q20/38 ,  H04L67/1097

Abstract: A distributed transaction in which appropriate patterns are combined without modifying implementation of a management system even when a service characteristic of a participating system changes. A management system receives input of a distributed transaction flow defining respective call sequential numbers of participating systems and service characteristic information representing respective service characteristics of the participating systems. The management system specifies an applied pattern for each of the participating systems based on pattern information including information for each pattern that represents a constraint condition of a service characteristic of a participating system as a call target. The applied pattern is a pattern satisfying the constraint condition corresponding to the service characteristic of the participating system. The management system generates a pattern-applied call program for each of the participating systems, and generates a distributed transaction program based on the pattern-applied call programs and a call sequence of the participating systems.

公开(公告)号：US20180365605A1

公开(公告)日：2018-12-20

申请号：US15921750

申请日：2018-03-15

Applicant: Hitachi, Ltd.

Inventor： Yoshiki KUROKAWA ,  Hiroki MIYAMOTO ,  Yoshiteru TAKESHIMA ,  Toshihiko KASHIYAMA

IPC: G06Q10/06 ,  G06Q10/08

Abstract: To shorten the simulation time without deteriorating the simulation accuracy. In a supply chain simulation system which performs simulation of a supply chain, a simulation data dividing unit creates a plurality of simulation divided input data obtained by consolidating and classifying, based on the transport-related information of each of the divided groups, simulation input data related to products of the plurality of items for each item in which the transport-related information of each of the divided groups are closely related to each other, and a plurality of simulators individually execute division simulation based on the plurality of simulation divided input data.

公开(公告)号：US20240346172A1

公开(公告)日：2024-10-17

申请号：US18621181

申请日：2024-03-29

Applicant: Hitachi, Ltd.

Inventor： Toshihiko KASHIYAMA ,  Kazuhiko MOGI ,  Norifumi NISHIKAWA

IPC: G06F21/62 ,  G06F16/2455 ,  G06F21/60

CPC classification number: G06F21/6227 ,  G06F16/24564 ,  G06F21/602

Abstract: Data is disclosed only when a utilization purpose is met, and a risk that the disclosed data is referenced for other purposes is reduced. A data disclosure apparatus discloses data in response to a query from a user, and includes at least one computation device, at least one memory resource, and at least one storage device. The computation device receives the query, checks whether or not the query complies with a predetermined rule, searches table data as query processing responding to the query to acquire a result of query execution when the query is confirmed to comply with the predetermined rule, encrypts the result of query execution using a public key corresponding to a private key held by the user, and provides the encrypted result of query execution to the user.

公开(公告)号：US20130103976A1

公开(公告)日：2013-04-25

申请号：US13710723

申请日：2012-12-11

Applicant: Hitachi, Ltd.

Inventor： Yoshifumi TAKAMOTO ,  Takao NAKAJIMA ,  Toshihiko KASHIYAMA

IPC: H04L29/14

CPC classification number: H04L29/14 ,  G06F11/2028 ,  G06F11/2033 ,  G06F11/2038 ,  G06F11/2046 ,  H04L69/40

Abstract: The reliability is improved at a low cost even in a virtualized server environment. The number of spare servers is reduced for improving the reliability and for saving a licensing fee for software on the spare servers. A server system comprises a plurality of physical servers on which a plurality of virtual servers run, a single standby server, a module for detecting an active virtual server, and a module for switching the correspondence of boot disks of virtualization modules for controlling virtual servers to the physical servers. When a physical server fails, the boot disk of the associated virtualization module is connected to a spare server to automatically activate on the spare server those virtual servers which have been active upon occurrence of the failure.

Abstract translation: 即使在虚拟化服务器环境中，可靠性也以低成本提高。 减少备用服务器的数量，以提高可靠性，并为备用服务器上的软件节省许可费用。 服务器系统包括多个虚拟服务器在其上运行的多个物理服务器，单个备用服务器，用于检测活动虚拟服务器的模块，以及用于切换用于控制虚拟服务器的虚拟化模块的引导盘的对应关系的模块， 物理服务器。 当物理服务器发生故障时，相关虚拟化模块的引导磁盘连接到备用服务器，以在备用服务器上自动激活那些在发生故障时已处于活动状态的虚拟服务器。