baber/WOPTO huggingface dataset:
Patent WO-2019042266-A1 (WO)
Title: Waste-heat recovery efficient energy-saving cooktop system
Inventor: BAI HONGHUA
IPC: F24B1/19
Filed: 2018-08-27
Abstract: A waste-heat recovery efficient energy-saving cooktop system. A combustion chamber 13 is mounted on a support 16 in an embedded manner. An ignition assembly 14 is mounted in match with the combustion chamber 13. The combustion chamber 13 is provided with an air inlet. The air inlet matching the ignition assembly 14 is disposed and is used for providing oxygenating air to the ignition assembly 14. A gas ventilation hole is formed in the upper end of the combustion chamber 13 and is in communication with a flue-gas heat exchange assembly 15. The flue-gas heat exchange assembly 15 comprises a housing 3 for discharging flue gas. A heat conduction pipe 4 is disposed in the housing 3. The heat conduction pipe 4 is led in from a flue-gas outlet of the housing 3 and is led out from a flue-gas inlet of the housing 3. A heat conduction medium is disposed in the heat conduction pipe 4, and is introduced from the upper end of the heat conduction pipe 4. An air introduction port 2 is formed in the upper end of the combustion chamber 13. The lower end of the housing 3 is in communication with the air introduction port 2 to introduce glue gas discharged from the combustion chamber 13. An annular heat exchange loop 5 is disposed, and the annular heat exchange loop 5 is arranged around a supporting port 1. The annular heat exchange loop 5 introduces the heat conduction medium discharged from the heat conduction pipe 4 to exchange heat. A water tank 6 is disposed, and the housing 3 is mounted in the water tank, and the water tank 6 is in communication with the annular heat exchange loop 5 to introduce the heat conduction medium.
Patent WO-2019091206-A1 (WO)
Title: 控制刷新频率的方法和装置、时序控制器、显示装置
Inventor: MA TAO
IPC: G09G3/20
Filed: 2018-09-13
Abstract: 一种控制刷新频率的方法和装置、时序控制器、显示装置。所述方法可以包括：接收来自处理器的一帧画面数据（S1）；确定该帧画面数据是否通过动态画面检验（S2）；以及响应于确定该帧画面数据通过动态画面检验，输出该帧画面数据，以刷新一次所述显示面板的显示画面（S3），或者，响应于确定该帧画面数据没有通过动态画面检验，跳过对所述画面数据的输出，以跳过一次所述显示面板的显示画面的刷新（S4）。
Patent WO-2019062580-A1 (WO)
Title: Display substrate and preparation method therefor, inkjet printing method, and display device
Inventor: HOU WENJUN
IPC: H01L51/00
Filed: 2018-09-17
Abstract: A display substrate and a preparation method therefor, an inkjet printing method, and a display device. The display substrate has a display region (1) and a peripheral region (2), and comprises a pixel defining layer. The pixel defining layer comprises a display pixel defining region (10) and an auxiliary pixel defining region (20) surrounding the display pixel defining region (10). The display pixel defining region (20) comprises a plurality of first pixel defining units (101). The auxiliary pixel defining region (20) comprises a plurality of second pixel defining units (201), and the opening area of at least a part of the second pixel defining units (201) is greater than the opening area of the first pixel defining units (101). The display pixel defining region (10) is within the display region (1), the auxiliary pixel defining area (20) is within the peripheral region (2), the plurality of first pixel defining units (101) are configured to form display pixels, and the plurality of second pixel defining units (201) are configured to form auxiliary pixels. The pixel defining layer can balance the drying speed of the ink for inkjet printing at openings located at the edges or inside when inkjet printing is being performed by means of providing fewer second pixel defining units, thereby making the form of the dried ink more uniform.
Patent WO-2019062581-A1 (WO)
Title: Measuring method and device
Inventor: ZHANG HONGPING
IPC: H04W24/08
Filed: 2018-09-17
Abstract: Provided in the application are a measuring method and device. The method comprises: receiving a measurement configuration from a base station, wherein the measurement configuration comprises indication information for indicating a relationship between a neighboring cell measurement of a terminal and a configured s-measure of the terminal. According to the method, the indication information can be carried in the measurement configuration, wherein the indication information indicates the relationship between the neighboring cell measurement of the terminal and the configured s-measure of the terminal, thereby implementing flexible configuration of the measurement configuration.
Patent WO-2019057183-A1 (WO)
Title: Storage container connector and apparatus provided with same
Inventor: HU SHAOQIN
IPC: A61M5/14
Filed: 2018-09-22
Abstract: Disclosed is a storage container connector, comprising a main body (1), wherein the main body (1) is provided with a separator (123) capable of opening and/or resetting a movable sealing block that is provided on an external storage container to close a storage chamber opening on the external storage container; or the main body (1) is provided with a separator (123) capable of opening and/or resetting a communication apparatus that is provided on the external storage container to open and/or close the storage chamber opening on the external storage container, thereby preventing nursing personnel from being exposed to an environment of sharp piercing for infusion, piercing for dosing or piercing for dispensing during an infusion, dosing or dispensing operation. Providing a reset-aiding apparatus (3) can enable the reset-aiding apparatus (3) to be used in the process of withdrawing a storage container connector to directly close a storage chamber opening on an external storage container, without an additional operation, thereby effectively avoiding abnormal opening of the storage chamber opening on the external storage container to effectively protect substances and medicines in the external storage container. The present technical solution is used for the field of medical instruments.
Patent WO-2019085789-A1 (WO)
Inventor: PENG CHUAN
IPC: H01L51/56
Filed: 2018-10-23
Abstract: L'invention concerne un substrat d'affichage et son procédé de fabrication. Le substrat d'affichage comprend un substrat, une couche de définition de pixels configurée pour définir une pluralité de régions de sous-pixels, et une pluralité de sous-pixels ayant au moins deux couleurs, chacune étant agencée à l'intérieur de chacune de la pluralité de régions de sous-pixels. La couche de définition de pixels et la pluralité de sous-pixels sont disposées sur le substrat. La couche de définition de pixels comprend une pluralité de premières parties de définition de pixels et une pluralité de secondes parties de définition de pixels. Chacune de la pluralité de premières parties de définition de pixels est configurée pour séparer des sous-pixels voisins de couleurs différentes. Chacune de la pluralité de secondes parties de définition de pixels est configurée pour séparer des sous-pixels voisins de la même couleur. Il est configuré de telle sorte qu'au moins l'une de la pluralité de secondes parties de définition de pixels a une largeur inférieure à celle de l'une quelconque de la pluralité de premières parties de définition de pixels.
Patent WO-2020062376-A1 (WO)
Title: 一种切换上报的方法、终端设备及网络设备
Inventor: YOU XIN
IPC: H04W36/00
Filed: 2018-10-24
Abstract: 本发明公开了一种切换上报的方法、终端设备、网络设备、芯片、计算机可读存储介质、计算机程序产品以及计算机程序，包括：当终端设备与第一目标网络设备建立连接成功时，发送第一指示信息；其中，所述第一指示信息用于向所述源网络设备指示与第一目标网络设备连接成功；和/或，当终端设备与第一目标网络设备建立连接失败时，发送第二指示信息；其中，所述第二指示信息用于向源网络设备指示与第一目标网络设备连接失败。
Patent WO-2019196395-A1 (WO)
Title: Electric wheel assembly with integrated hub motor
Inventor: LI JIANQIU
IPC: B60K7/00
Filed: 2018-11-01
Abstract: Disclosed is an electric wheel assembly (100) with an integrated hub motor, the electric wheel assembly comprising a tire (1), a rim (3), a hub (16), a planetary gear reducer (4), an inner rotor motor (5), a brake system (6), and a knuckle assembly (7). The inner rotor motor is internally arranged on the rim, a rotor (34) thereof is hollow and is externally sheathed onto a motor rotor sleeve (36), one end of the motor rotor sleeve is mounted with a sun gear (15) to transmit power to the planetary gear reducer, and the other end thereof is mounted with a brake disk (21) of the brake system. The planetary gear reducer takes the form of a cluster gear, thus realizing a high reduction ratio arrangement within a limited space. The planetary gear reducer also comprises a planet carrier that is integrated with the hub and that acts as a power output end connected to the hub. The hub and a knuckle sleeve (17) pass through the hollow motor rotor sleeve (36) with a hub bearing (24) being provided therebetween, thus realizing a large load with a small weight. The inner rotor motor and the planetary gear reducer can use an integrated direct oil cooling technology.
Patent WO-2020000849-A1 (WO)
Title: 一种蜡光质感的柔面砖的耐磨干粒及柔面复古陶瓷砖
Inventor: LIN WEI
IPC: C04B41/89
Filed: 2018-11-06
Abstract: 一种蜡光质感的柔面砖的耐磨干粒及柔面复古陶瓷砖，该耐磨干粒按照重量百分比配比如下：二氧化硅：51.06～59wt％、三氧化二铝：10～20wt％、氧化钙：7～12wt％、氧化镁：0.2～1.4wt％、氧化钾：1～5.1wt％、氧化钠：0.5～5.5wt％、氧化锌：1～6wt％、氧化锶：3～5.2wt％；三氧化二铝与二氧化硅的比值介于1∶5与2∶5之间，将该耐磨干粒加工成细度可以为80-100。
Patent WO-2019148940-A1 (WO)
Title: Middle frame assembly, electronic apparatus and method for manufacturing middle frame assembly
Inventor: HUANG FUYONG
IPC: H05K5/02
Filed: 2018-11-20
Abstract: A middle frame assembly (30) may include a middle frame (20) and a bearing plate (40). The middle frame (20) may include a first and second surfaces (202, 204) opposite to each other and defining a first and second through holes (20a, 20b) spaced apart from each other, and both the first and second through holes (20a, 20b) may penetrate the first and second surfaces (202, 204). The bearing plate (40) may include a bearing body (42) having a third surface (422), a first extending portion (44) extending from the third surface (422), configured to pass through the first through hole (20a) and have an interference fit with the middle frame (20), and a second extending portion (46) extending from the third surface (422), spaced apart from the first extending portion (44), configured to pass through the second through hole (20b) and have a clearance fit with the middle frame (20).
Patent WO-2019114518-A1 (WO)
Title: 母线连接装置、母线套管及其制造方法
Inventor: YANG CHANGZHOU
IPC: H01R25/16
Filed: 2018-11-22
Abstract: 一种母线连接装置、母线套管及其制造方法，其中母线连接装置（100，300）包括：第一母线套管（101，301），适于密封地围绕第一母线（103，303）的至少一部分；第二母线套管（102，302），适于密封地围绕第二母线（104，304）的至少一部分；连接导体（105，305），位于第一母线套管和第二母线套管之间并且将第一母线与第二母线电连接；以及连接导体套管（106，306），适于密封地围绕连接导体，其中至少第一母线套管包括：第一部分，适于密封地围绕第一母线的至少一部分；以及第二部分，与第一部分连接并且与第一部分形成在第一母线的轴向方向上延伸的间隙，该间隙适于容纳连接导体套管。该母线连接装置提供了节省空间、结构简单、安装方便且连接部位电场均匀的开关柜拼接方式。
Patent WO-2020103146-A1 (WO)
Title: 一种供电控制方法和装置
Inventor: XIE QIANG
IPC: H02M3/155
Filed: 2018-11-23
Abstract: 本申请实施例公开了一种供电控制方法和装置，涉及通信技术领域，解决了现有技术中多相DCDC转换器效率较低的问题。具体方案为：采集多相直流变直流DCDC转换器的负载参数；根据负载参数，选择输出多相脉冲频率调制PFM信号或者多相脉冲宽度调制PWM信号。
Patent WO-2020097982-A1 (WO)
Inventor: GONG SHENGZHAO
IPC: A61Q5/00
Filed: 2018-11-28
Abstract: The present invention belongs to the field of cosmetics, and an essential oil composition for scalp care and use are disclosed. The essential oil composition is made from the following components by weight percentages: 0.05 to 10.0% of ginger essential oil; 0.1 to 5.0% of Cymbopogon citratus essential oil; 0.05 to 6.0% of tea essential oil; 0.1 to 6.0% of mastic essential oil; 0.1 to 6.0% of cedar essential oil; and the balance of basic oils. The essential oil composition of the present invention is obtained by means of extensive experimental research by the inventors under the guidance of the theory of monarch, minister, assistant and guide in traditional Chinese medicine prescriptions. In the essential oil composition of the present invention, various components are compounded in a specific proportion to achieve synergistic effects. Effects of the essential oil composition for promoting blood circulation and promoting cell growth are used for promoting hair growth, bactericidal and oil-controlling effects of the essential oil composition are used for removing scalp acne and preventing hair loss, and a moisturizing effect and an anti-free radical effect of the essential oil composition are used for achieving the effect of removing dandruff, thereby achieving the aim of scalp care.
Patent WO-2019105386-A1 (WO)
Inventor: LU JIANG
IPC: H02J3/00
Filed: 2018-11-28
Abstract: 本发明公开了一种适用于电压源换流器的主备接入系统，其包括基于全控型电力电子器件的电压源换流器、两条或两条以上交流进线支路，电压源换流器通过公共连接点或母线与两条或两条以上交流进线支路同时相连接，每条交流进线支路的交流电源与公共连接点或母线之间均配置至少一个分断设备。相应地，提供一种适用于电压源换流器的主备接入系统控制方法及装置。本发明可以实现电压源换流器可靠穿越交流电源侧永久故障等故障情况，保证满足高可靠性应用场合的要求。
Patent WO-2019137164-A1 (WO)
Title: Method and device for authorization withdrawal
Inventor: GE CUILI
IPC: G06F9/448
Filed: 2018-12-18
Abstract: A method and device for authorization withdrawal, related to the field of communications, wherein the method comprises: a first entity receiving an authorization withdrawal request message from a second entity (201), wherein the authorization withdrawal request message carries an identifier of an application programming interface (API) calling entity; and the first entity transmitting an authorization withdrawal response message to the second entity according to the authorization withdrawal request message (202). The described method improves authorization management of calling an API, such that the authorization for calling the API may be promptly withdrawn to avoid wasting resources caused when an API calling entity which does not have the authorization to call an API calls an API. For example, the API calling entity uses a former authorization to call an API, and an API exposing function (AEF) executes API calling but fails, thus wasting a processing resource of the AEF. In addition, the AEF is prevented from executing API calling of an API calling entity which does not have the authorization to call an API, thus increasing the working efficiency of a common API framework (CAPIF) system.
Patent WO-2019141037-A1 (WO)
Inventor: DENG CHAOJUN
IPC: H04Q11/00
Filed: 2018-12-20
Abstract: 本申请公开了一种通信网络及相关设备，该通信网络包括第一光线路终端、第二光线路终端和用户端设备，第二光线路终端可通过PON接口连接上层的第一光线路终端，还可通过PON接口连接下层的用户端设备。本申请的通信网络可以使得偏远地区的用户接入宽带业务，此外，由于PON接口的点对多点传输特性，还可以节约传输介质，降低组网成本。
Patent WO-2019129128-A1 (WO)
Inventor: LIU JUN
IPC: H04W4/12
Filed: 2018-12-27
Abstract: La présente invention concerne un procédé d'authentification de service de messagerie multimédia (MMS), comprenant les étapes consistant à : envoyer un MMS à un terminal mobile; sur la base d'un modèle de vérification d'informations préconfiguré, générer des premières informations de vérification correspondant au MMS et envoyer les premières informations de vérification au terminal mobile. La présente invention concerne en outre un procédé d'authentification de MMS, un serveur, un terminal mobile et un support de stockage lisible par ordinateur.
Patent WO-2020133413-A1 (WO)
Inventor: Lu tianyang
IPC: H04M1/725
Filed: 2018-12-29
Abstract: Provided in the embodiments of the present application are an application grouping adjustment method and apparatus, and a storage medium and an electronic device. The application grouping adjustment method comprises: obtaining a current geographic location; obtaining, on the basis of said geographic location, usage information for each application within a historical time period; determining a current point in time; adjusting, on the basis of said usage information, a priority level for each application at the current point in time; and, on the basis of the priority levels, making adjustments to applications among a plurality of applications to be grouped by the device.
Patent WO-2019223330-A1 (WO)
Inventor: LIU RUI
IPC: G09G3/20
Filed: 2019-01-03
Abstract: 一种驱动芯片（100），应用于显示面板，显示面板包括位于显示区域的多个亚像素，显示区域具有非直线延伸的边界（6），多个亚像素包括与非直线延伸的边界（6）的距离实质上小于预设阈值的第一亚像素（7）和除第一亚像素（7）之外的第二亚像素（8）。驱动芯片（100）包括：调整电路（200），用于在进入预设显示模式时，将至少部分第一亚像素（7）在原始画面数据中的第一灰阶值调整为第二灰阶值，第二灰阶值实质上小于对应第一亚像素（7）的第一灰阶值；驱动电路（300），用于按照第二灰阶值驱动第一亚像素（7）进行显示。
Patent WO-2020133587-A1 (WO)
Inventor: WANG ZHIQUAN
IPC: A01K67/02
Filed: 2019-01-14
Abstract: 一种动物育种中利用亲代基因组信息的精准选配方法。该方法从后备种群中评估选出留种种群，并进行基因分型，划分出留种雄性种和雌性种；雄性和雌性个体基因组不同位点的基因型配对分配与组合；预测配对组合的后代的期望基因型值，其中基因型包括等位基因替换效应+显性效应；根据其后代的预测基因型值优化亲本个体交配组合；根据选配组合的优化结果，为需要配种的特定雌性动物推荐最优的雄性动物的配对列表。该方法通过优化交配亲本的基因型组合来产生后代，并可与动物养殖完善的动物识别、管理、生产和遗传改良平台相结合。
Patent WO-2019141219-A1 (WO)
Title: Method and system for scheduling multiple mobile robots
Inventor: LIU QING
IPC: G05D1/02
Filed: 2019-01-18
Abstract: Provided are a method and system for scheduling multiple mobile robots, belonging to the field of robots. The method for scheduling multiple mobile robots comprises: acquiring multiple sets of historical node region sequences corresponding to an initial position and a planned path, wherein a mobile robot is configured to only pass through a sequence of nodes allocated thereto; collecting statistics on corresponding historical execution parameters when the mobile robot executes the multiple sets of historical node region sequences; when a scheduling request for scheduling the mobile robot from the initial position to the planned path is detected, selecting a first historical node region sequence from among the multiple sets of historical node region sequences based on a statistical result of the historical execution parameters; and allocating the selected first historical node region sequence to the mobile robot. Therefore, the centralized computing efficiency of a server is improved, the response efficiency of the server is optimized, and the transportation efficiency of mobile robots in dense regions is also improved at the same time.
Patent WO-2019154139-A1 (WO)
Title: Led lamp
Inventor: WANG MINGBIN
IPC: H05B44/00
Filed: 2019-01-27
Abstract: An LED lamp includes: a lamp shell (2); a passive heat dissipating element having a heat sink (1), and the heat sink (1) including fins (11) and a base (13) and connecting to the lamp shell (2); a power source (5) disposed in the lamp shell (2); and a light board (3) connecting to the heat sink (1) and including LED chips (311) electrically connected to the power source (5). A chamber of the lamp shell (2) is formed with a first heat dissipating channel (7a). The first heat dissipating channel (7a) has a first air inlet (2201) at an end of the lamp shell (2). Another end of the lamp shell (2) has a heat dissipating hole (222). A second heat dissipating channel (7b) is formed in the fins (11) and base (13). The second heat dissipating channel (7b) has a second air inlet (1301). Air flows into the second air inlet (1301), passes through the second heat dissipating channel (7b) and flow out from spaces between every adjacent two of the fins (11).
Patent WO-2019165936-A1 (WO)
Title: 手势识别反馈方法及装置
Inventor: HUANG XUEYU
IPC: G06F3/0484
Filed: 2019-02-22
Abstract: 本公开公开了一种手势识别反馈方法及装置，其中，手势识别反馈方法包括：当检测到页面处于可触发状态时，通知手势检测系统启动手势自循环检测；根据页面的布局状态和手势检测系统检测到的手势信息，确定页面需执行的响应动作；触发页面执行响应动作。
Patent WO-2020168564-A1 (WO)
Inventor: WANG JIAN
IPC: G06Q20/40
Filed: 2019-02-22
Abstract: A method and a device for digital currency transaction and account authentication, and a storage medium. A method for authentication of a digital currency account is applied in a terminal apparatus (20), and comprises: sending a query request to a physical medium (10) of a digital currency, wherein the physical medium(10) stores account information of a blockchain account and a signature events count associated with a private key (S501); receiving a query response sent by the physical medium (10), the query response comprising the account information and the signature events count (S502); searching a blockchain network (30) according to the account information, and obtaining the number of transactions conducted with the blockchain account (S503); and authenticating the validity of the account associated with the physical medium (10) according to the number of transactions and the signature events count (S504). The method ensures a reliable authentication result, is applicable to a frequently used physical medium (10) of a digital currency, and does not hinder continuous usage and circulation of the physical medium (10).
Patent WO-2019214347-A1 (WO)
Title: Genetic screening method for negative regulatory factor of streptomyces biosynthesis gene cluster
Inventor: LI YONGQUAN
IPC: C12N15/76
Filed: 2019-03-20
Abstract: Provided is a screening method for a negative regulatory factor of a Streptomyces biosynthesis gene cluster, the method comprising: constructing a reporting system in Streptomyces cells, which is mediated by a promoter of a gene of interest of the Streptomyces cells, using a random mutant system constructed on the basis of transposon Himar1 to perform random mutation on the Streptomyces cells containing the reporting system, subjecting the mutated Streptomyces strain to an enhanced screening to obtain a Streptomyces strain with high expression of the gene of interest, performing phage packaging on a genome of the Streptomyces strain with high expression of the gene of interest, and screening cosmids having randomly inserted fragments, and sequencing DNA of the cosmids to determine the position of the randomly inserted fragment in the genome of the Streptomyces strain with high expression of the gene of interest.
Patent WO-2020191574-A1 (WO)
Title: Systems and methods for controlling brightness of an image
Inventor: LI LEI
IPC: H04N9/64
Filed: 2019-03-25
Abstract: Systems and methods for processing one or more images include an apparatus (e.g., an application platform) that can obtain non-linear image data associated with an image and one or more linear statistics of the image. The apparatus can determine one or more non-linear statistics of the image and one or more non-linear statistics of a portion of the image using the non-linear image data. The apparatus can determine a relation between the one or more non-linear statistics of the portion of the image and the one or more non-linear statistics of the image and estimate one or more linear statistics of the portion of the image based on the relation and the one or more linear statistics of the image. The apparatus can determine brightness for at least the portion of the image based at least on the estimated one or more linear statistics of the portion of the image.
Patent WO-2019205919-A1 (WO)
Inventor: JIANG LINJIAN
IPC: C12N15/00
Filed: 2019-04-08
Abstract: 本发明公开了一种生物突变体库的构建方法。本发明公开的生物突变体库的构建方法包括：1)向靶标生物中导入DNA片段，得到转基因生物；该DNA片段能在转基因生物中表达完成定点突变靶标DNA的所需的元件；2)培养转基因生物，得到生物突变体库；该生物为有性生殖生物，转基因生物能特异在生殖细胞中定点突变靶标DNA。利用本发明的方法得到的突变体库可筛选到具有以下性状的生物：抗生物逆境，抗非生物逆境，高产量，好品质性状，高次生代谢物产量等。因此，本发明的方法具有巨大的应用前景。
Patent WO-2019228296-A1 (WO)
Title: Display processing method and terminal device
Inventor: YANG QIHAO
IPC: H04M1/725
Filed: 2019-05-27
Abstract: Provided are a display processing method and a terminal device. The method comprises: receiving a first operation of a user when a first screen and a second screen of a terminal device are both in a state of bright screen display; and in response to the first operation, switching the display content of the first screen and/or the second screen.
Patent WO-2019242482-A1 (WO)
Inventor: ZHOU JIANPING
IPC: H04W72/04
Filed: 2019-05-30
Abstract: 本发明实施例提供一种命令处理方法及终端设备，涉及通信技术领域，用于解决终端设备无法在有多个BWP同时被激活且多个激活的BWP中的一个或多个BWP上有正在进行的随机接入时对收到的BWP切换命令或BWP激活命令或BWP去激活命令进行处理的问题。该方法包括：在所述终端设备上有至少一个配置的或被激活的带宽部分BWP且所述至少一个配置的或被激活的BWP中的至少一个BWP有正在进行的随机接入的情况下，接收第一命令，所述第一命令包括：BWP切换命令、BWP激活命令以及BWP去激活命令中的至少一个，按照预设处理方式处理所述第一命令。本发明实施例用于命令处理。
Patent WO-2020248150-A1 (WO)
Title: Method and system for answering multi-dimensional analytical queries under local differential privacy
Inventor: DING BOLIN
IPC: G06F16/2455
Filed: 2019-06-12
Abstract: Systems and methods for answering a multi-dimensional analytical query under local differential privacy including receiving a query for an analytical result of user data in at least a first range over a first data dimension; determining a plurality of sub-intervals associated with the at least first range; decomposing the query into a plurality of sub-queries, each of the plurality of sub-queries corresponding to one of the plurality of first sub-intervals; fetching, from user devices, first user data in the plurality of sub-intervals; and computing the analytical result of user data in at least the first range over the first data dimension in accordance with the first user data in the plurality of sub-intervals.