公开(公告)号：US20190286724A1

公开(公告)日：2019-09-19

申请号：US16125840

申请日：2018-09-10

Applicant: Hitachi, Ltd.

Inventor： Fumiya KUDO ,  Hideki HAYASHI

IPC: G06F17/30 ,  G06N5/02

Abstract: Series data in a table form and which includes a plurality of records each having a value of a response variable, response variable series identification information, a value of an explanatory variable, and explanatory variable series identification information identifying series of the explanatory variable associated with one another is stored. An analytical record that is any of the records and that contains the value of the response variable or the value of the explanatory variable possibly influencing the response variable at a time of analyzing the response variable is identified; and an additional record having the value of the response variable or the value of the explanatory variable in the identified analytical record associated with the value of the response variable in a predetermined record that is any of the records is generated, and analytical series data obtained by adding the generated additional record to the series data is generated.

公开(公告)号：US20130339371A1

公开(公告)日：2013-12-19

申请号：US13782675

申请日：2013-03-01

Applicant: HITACHI, LTD.

Inventor： Hideki HAYASHI ,  Akinori ASAHARA ,  Kiyohiro OBARA ,  Akiko SATO

IPC: G06F17/30

CPC classification number: G06F17/3087 ,  G06F17/30533

Abstract: It is provided a spatio-temporal data management system for managing time series data associated with a spatio-temporal region, comprising: a processor for executing a program; a memory for storing the program; and a storage device for storing the time series data. The processor segments the spatio-temporal region in time and space to generate a plurality of spatio-temporal segments, assigns, in consideration of temporal and spatial proximity of the plurality of spatio-temporal segments, identifiers for uniquely identifying the plurality of spatio-temporal segments, each of the identifiers being expressed with a one-dimensional integer value; and determines an arrangement of the time series data so that pieces of data of spatio-temporal segments that are close in the assigned identifiers are arranged close on the storage device.

Abstract translation: 提供了一种用于管理与时空区域相关联的时间序列数据的时空数据管理系统，包括：用于执行程序的处理器; 用于存储程序的存储器; 以及用于存储时间序列数据的存储装置。 处理器在时间和空间中划分空间 - 时间区域以产生多个时空段，考虑到多个时空段的时间和空间接近度来分配用于唯一地识别多个时空段的标识符 段，每个标识符用一维整数值表示; 并且确定时间序列数据的布置，使得在分配的标识符中接近的时空片段的数据被布置在存储装置上。

公开(公告)号：US20130166247A1

公开(公告)日：2013-06-27

申请号：US13718279

申请日：2012-12-18

Applicant: Hitachi, Ltd.

Inventor： TAKAYUKI AKIYAMA ,  Hideki HAYASHI ,  Akiko SATO

IPC: G01P15/14

CPC classification number: G01P15/14 ,  G01C21/16 ,  G01C21/206

Abstract: A process of the invention analyzes a moving speed using acceleration data by an acceleration sensor and calculates a moving distance of the object. The process removes each of given candidate values of drift components from angular velocity data by a gyro sensor and generates relative azimuths data pieces. Based on the respective relative azimuths data pieces, the process calculates moving directions of the object. Using the moving distance and moving directions calculated, the process creates plural moving loci corresponding to the candidate values of drift components. By comparing the positions of actual starting and end points of moving in a building with the positions of starting and end points of each moving locus, the process evaluates the moving loci and determines an optimal moving locus out of the moving loci, based on the evaluation result.

Abstract translation: 本发明的过程使用加速度传感器的加速度数据来分析移动速度并计算物体的移动距离。 该过程通过陀螺仪传感器从角速度数据中移除漂移分量的每个给定候选值，并产生相对方位角数据。 基于相应的相对方位数据，该过程计算对象的移动方向。 使用计算的移动距离和移动方向，该过程创建与漂移分量的候选值对应的多个移动轨迹。 通过将建筑物中移动的实际起点和终点的位置与每个移动轨迹的起点和终点的位置进行比较，该过程基于评估运动轨迹来确定移动轨迹中的最佳移动轨迹， 结果。

公开(公告)号：US20230387685A1

公开(公告)日：2023-11-30

申请号：US18027751

申请日：2020-11-27

Applicant: Hitachi, Ltd.

Inventor： Nao SAITO ,  Norihiko MORIWAKI ,  Hideki HAYASHI ,  Masato UTSUMI ,  Kazuya MONDEN ,  Yusuke SHOMURA ,  Toshiaki SUZUKI ,  Yoshikazu ISHII ,  Mingyu JO

IPC: H02J3/00 ,  H02J3/38

CPC classification number: H02J3/003 ,  H02J3/381 ,  H02J2310/58 ,  H02J2300/24 ,  H02J2203/10

Abstract: An energy management controller (1) includes a virtual grid generating unit (110) that for each of grids, generates a virtual grid that collectively manages information including information on an energy resource and a wire, in order to carry out efficient power management, and a deal management unit (150) that based on the generated virtual grid, manages a power deal with a consumer-side supplied with power from the energy resource. The energy management controller (1) further includes an RE coloring unit (132) that classifies power by coloring to allow power deals based on RE coloring.

公开(公告)号：US20230359816A1

公开(公告)日：2023-11-09

申请号：US18025950

申请日：2021-03-17

Applicant: Hitachi, Ltd.

Inventor： Akira IOKU ,  Hideki HAYASHI

IPC: G06F40/216 ,  G06F40/35 ,  G06F16/35

CPC classification number: G06F40/216 ,  G06F40/35 ,  G06F16/355

Abstract: The present invention enables, according to a situation, accurate extraction of related expressions pertaining to search queries and question sentences. A related expression extraction device 1 receives input of text data, performs at least one of categorization of the received text data and determination of a structural pattern of the text data, determines, based on a result of at least one of the categorization of the text data and the determination of the structural pattern of the text data, which of a plurality of comparative assessment models 27 and 28 is used to extract related expression group data 26, and extracts a related expression related to content of the text data from the related expression group data 26 using the determined comparative assessment models 27 and 28.

公开(公告)号：US20210081600A1

公开(公告)日：2021-03-18

申请号：US16849025

申请日：2020-04-15

Applicant: Hitachi, Ltd.

Inventor： Hideki HAYASHI ,  Akira IOKU

IPC: G06F40/169 ,  G06F40/30 ,  G06F16/9032 ,  G06F16/93

Abstract: In coaching with the purpose of creating a document in mind, data containing question group related to components of the document, a question of details, and a question of another topic is included, an increase/decrease of information amount of the answers of the writer is estimated from a writer's past answers and a current answer, and a next question is selected based on the estimation result.

公开(公告)号：US20180213353A1

公开(公告)日：2018-07-26

申请号：US15502677

申请日：2015-03-26

Applicant: Hitachi, Ltd.

Inventor： Yuuichi OGAWA ,  Natsuko SUGAYA ,  Akinori ASAHARA ,  Hideki HAYASHI ,  Hitoshi TOMITA

IPC: H04W4/021 ,  G06T11/20

CPC classification number: H04W4/021 ,  G01C21/00 ,  G06T11/206 ,  G08B21/10 ,  H04M11/00 ,  H04W4/023 ,  H04W4/029 ,  H04W4/90

Abstract: A confined space estimation system, and a confined space estimation method capable of accurately confirming a confined space formed in the event of a disaster, estimates a confined space comprising a storage device which stores information indicating a geographical space, and a processor which divides the geographical space into grids. Based on location information sent from a terminal, the processor periodically aggregates a number of terminals within the grids or a number of terminals that passed through boundaries between the grids, extracts grids or boundaries in which the aggregated number of terminals is a predetermined number and in which there is no change in the aggregated number of terminals, determines whether the extracted grids or boundaries can be linked to form an annular shape, and, if the annular shape can be formed, estimates a geographical space configured from the grids within the formed annular shape as the confined space.