Patents by Inventor Jiaji ZHU
Jiaji ZHU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230266249Abstract: A characteristic information extraction method of a small-molecule volatile substance, including: dividing a surface-enhanced Raman scattering (SERS) spectrum of the small-molecule volatile substance to obtain n wavelength subintervals, where n is a positive integer; sampling the n wavelength subintervals through weighted bootstrap sampling (WBS) to obtain Wwavelength subintervals, where W is a positive integer less than n; and screening the W wavelength subintervals to obtain desired wavelength subintervals. This application also provides a rapid detection method and a portable detection system of a small-molecule volatile substance.Type: ApplicationFiled: April 28, 2023Publication date: August 24, 2023Inventors: Quansheng CHEN, Huanhuan LI, Qin OUYANG, Jiaji ZHU, Yi XU, Tianhui JIAO, Haihui PAN
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Patent number: 11635385Abstract: A method for fast extracting an organic pollutant in a complex system is disclosed, which includes following steps. A surface-enhanced Raman scattering (SERS) spectrum of an organic pollutant is divided to obtain P wavelength sub-intervals with overlapping regions. The P wavelength sub-intervals are screened to obtain ? wavelength sub-intervals. The ? wavelength sub-intervals are screened to obtain a required wavelength sub-interval. The required wavelength sub-interval is screened to obtain a required wavelength subset. A method and a system for fast detecting an organic pollutant in a complex system are also disclosed.Type: GrantFiled: October 20, 2021Date of Patent: April 25, 2023Assignees: JiMei University, Jiangsu UniversityInventors: Quansheng Chen, Huanhuan Li, Qin Ouyang, Jiaji Zhu, Yi Xu, Tianhui Jiao, Haihui Pan
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Patent number: 11500812Abstract: The present invention discloses an intermediate file processing method, client, server, and system, including: receiving, from a first client, a message of writing an intermediate file to a first server; requesting a second server to create cluster information of the intermediate file; after the cluster information is created, receiving the cluster information returned by the second server, wherein the cluster information includes a priority level; and sending the cluster information to the first client and a second client, wherein the intermediate file is uploaded to the first server by the first client, so that the intermediate file is written by the first server according to a local disk load and the priority level of the cluster information, and the intermediate file is read from the first server by the second client according to the cluster information.Type: GrantFiled: January 4, 2018Date of Patent: November 15, 2022Assignee: Alibaba Group Holding LimitedInventors: Jiaji Zhu, Wenhui Yao, Wei Xie
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Publication number: 20220042918Abstract: A method for fast extracting an organic pollutant in a complex system is disclosed, which includes following steps. A surface-enhanced Raman scattering (SERS) spectrum of an organic pollutant is divided to obtain P wavelength sub-intervals with overlapping regions. The P wavelength sub-intervals are screened to obtain ? wavelength sub-intervals. The ? wavelength sub-intervals are screened to obtain a required wavelength sub-interval. The required wavelength sub-interval is screened to obtain a required wavelength subset. A method and a system for fast detecting an organic pollutant in a complex system are also disclosed.Type: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Inventors: Quansheng CHEN, Huanhuan LI, Qin OUYANG, Jiaji ZHU, Yi XU, Tianhui JIAO, Haihui PAN
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Patent number: 11055360Abstract: Embodiments of the disclosure provide a data write-in method and apparatus. The data write-in method includes: selecting a target replica server from a plurality of replica servers managed by a metadata server according to remaining capacity of the plurality of replica servers; selecting a write-in disk in the target replica server according to remaining capacity and load of disks managed by the target replica server; and storing write-in data into the write-in disk through the target replica server.Type: GrantFiled: May 3, 2018Date of Patent: July 6, 2021Assignee: Alibaba Group Holding LimitedInventors: Chengyu Dong, Jiaji Zhu, Haiyong Zhang, Feng Cao, Yong Wang, Wenhui Yao, Junping Wu, Yang Wu, Yuanyuan Dong, Dongzheng Wu, Jing Lu
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Patent number: 10956990Abstract: The disclosure discloses a method for adjusting distribution of partitioned data. Access frequency information of to-be-processed partitioned data is acquired when an adjustment time corresponding to the to-be-processed partitioned data has arrived; revenue data of each of data centers corresponding to the partitioned data is then determined according to the access frequency information and a preset revenue function; and finally, optimal distribution information is determined according to the revenue data of each of the data centers and a quantity of copies, and a position of each of the copies in each of the data centers is adjusted according to the optimal distribution information. Therefore, without even having to provide additional memory or hard disk for storage, this disclosure dynamically optimizes the distribution status of the partitioned data according to access frequencies and characteristics of the partitioned data, thus reducing transmission bandwidth requirements among data centers.Type: GrantFiled: December 16, 2016Date of Patent: March 23, 2021Assignee: ALIBABA GROUP HOLDING LIMITEDInventors: Haiyong Zhang, Jing Lu, Wenhui Yao, Chengyu Dong, Jiaji Zhu
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Publication number: 20210056074Abstract: A method is implemented by a computing node, and includes: sending a mounting request triggered for a target logical volume to a target storage node of multiple storage nodes included in a file system; receiving storage location information of a log segment and a checkpoint corresponding to the target logical volume sent by the target storage node; reading log metadata of the log segment and the checkpoint according to the storage location information to restore a data state of the target logical volume; and performing data access processing based on the data state of the target logical volume. When multiple computing nodes access a target logical volume, read and write consistency of the multiple computing nodes can be maintained based on log information of the target logical volume maintained by various storage nodes. Furthermore, reading and writing can be performed synchronously, thus avoiding read and write conflicts.Type: ApplicationFiled: November 6, 2020Publication date: February 25, 2021Inventor: Jiaji Zhu
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Patent number: 10884623Abstract: Embodiments of the disclosure provide a method and apparatus for upgrading a distributed storage system, and the disclosure relates to the field of distributed computer technology. In the disclosure, a client sends write requests regarding the same to-be-written data to a plurality of data servers at the same time; then how many data servers the to-be-written data is successfully written into is analyzed; it is determined whether the number of the successful writes is greater than a pre-defined number; and first feedback information or second feedback information is sent to each data server having a successful write according to the determining result. The data server then determines whether it is in an upgradeable state or a non-upgradeable state according to the received first feedback information or second feedback information. Based on the state of the data server, an upgrade control server may select to notify, in a rolling manner, the data server to perform an upgrade operation.Type: GrantFiled: December 19, 2016Date of Patent: January 5, 2021Assignee: ALIBABA GROUP HOLDING LIMITEDInventors: Jiaji Zhu, Shuqi Zhao, Jiangbin Lin, Yuesheng Gu
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Patent number: 10862740Abstract: Provided in the disclosed embodiments are methods and apparatuses for switching service nodes in a distributed storage system, the service nodes comprising a current service node and backup service nodes. The method comprises: monitoring response states of the service nodes to a service request; and if a response state of the current service node is abnormal, stopping communication between the current service node and the backup service nodes, and triggering a switching process for the current service node. In the case of a service timeout, service unavailability, service abnormality, or the like caused by a hardware failure or software defect, logic is checked with a service node that performs logical determination and data statistics collection for multiple factors affecting response states of service nodes, thereby achieving autonomous switching and recovery of the service nodes and improving service availability.Type: GrantFiled: December 8, 2016Date of Patent: December 8, 2020Assignee: ALIBABA GROUP HOLDING LIMITEDInventors: Wenhui Yao, Junfeng Liu, Shuo Huang, Haiyong Zhang, Jiaji Zhu
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Patent number: 10826817Abstract: The present disclosure provides routing table synchronization methods, apparatuses, and systems. One exemplary method comprises: acquiring modified routing table data if it is detected that a routing table in a default first data management group is modified; and synchronizing the modified routing table data to at least one non-default second data management groups to update a routing table in the at least one non-default second data management group. The first data management group and the at least one second data management group are deployed in a distributed file system. The technical solutions provided in present disclosure can address the technical problem that when any routing table in a distributed file system is modified, routing tables in the system may not be synchronized because routing tables in the distributed file system are static tables.Type: GrantFiled: September 7, 2018Date of Patent: November 3, 2020Assignee: ALIBABA GROUP HOLDING LIMITEDInventors: Junfeng Liu, Wenhui Yao, Jiaji Zhu
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Publication number: 20200344322Abstract: A resource scheduling method including sending, by a first cluster instance, to a second cluster instance a resource borrowing request if available resources owned by the first cluster instance is less than a threshold; receiving borrowable resources information returned by the second cluster instance, wherein the borrowable resources information represents borrowable data server resources in the second cluster instance; and acquiring, by the first cluster instance, the borrowable data server resources for data processing. The techniques of the present disclosure realize resource reuse between cluster instances, make full use of the resources of each cluster instance, and improve the resource utilization rates of the clusters.Type: ApplicationFiled: July 8, 2020Publication date: October 29, 2020Inventor: Jiaji Zhu
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Publication number: 20200264777Abstract: Embodiments of the disclosure provide a method and apparatus for upgrading a distributed storage system, and the disclosure relates to the field of distributed computer technology. In the disclosure, a client sends write requests regarding the same to-be-written data to a plurality of data servers at the same time; then how many data servers the to-be-written data is successfully written into is analyzed; it is determined whether the number of the successful writes is greater than a pre-defined number; and first feedback information or second feedback information is sent to each data server having a successful write according to the determining result. The data server then determines whether it is in an upgradeable state or a non-upgradeable state according to the received first feedback information or second feedback information. Based on the state of the data server, an upgrade control server may select to notify, in a rolling manner, the data server to perform an upgrade operation.Type: ApplicationFiled: December 19, 2016Publication date: August 20, 2020Applicant: Alibaba Group Holding LimitedInventors: Jiaji ZHU, Shuqi ZHAO, Jiangbin LIN, Yuesheng GU
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Publication number: 20180367441Abstract: The present disclosure provides routing table synchronization methods, apparatuses, and systems. One exemplary method comprises: acquiring modified routing table data if it is detected that a routing table in a default first data management group is modified; and synchronizing the modified routing table data to at least one non-default second data management groups to update a routing table in the at least one non-default second data management group. The first data management group and the at least one second data management group are deployed in a distributed file system. The technical solutions provided in present disclosure can address the technical problem that when any routing table in a distributed file system is modified, routing tables in the system may not be synchronized because routing tables in the distributed file system are static tables.Type: ApplicationFiled: September 7, 2018Publication date: December 20, 2018Inventors: Junfeng LIU, Wenhui YAO, Jiaji ZHU
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Publication number: 20180357727Abstract: The disclosure discloses a method for adjusting distribution of partitioned data. Access frequency information of to-be-processed partitioned data is acquired when an adjustment time corresponding to the to-be-processed partitioned data has arrived; revenue data of each of data centers corresponding to the partitioned data is then determined according to the access frequency information and a preset revenue function; and finally, optimal distribution information is determined according to the revenue data of each of the data centers and a quantity of copies, and a position of each of the copies in each of the data centers is adjusted according to the optimal distribution information. Therefore, without even having to provide additional memory or hard disk for storage, this disclosure dynamically optimizes the distribution status of the partitioned data according to access frequencies and characteristics of the partitioned data, thus reducing transmission bandwidth requirements among data centers.Type: ApplicationFiled: December 16, 2016Publication date: December 13, 2018Inventors: Haiyong ZHANG, Jing LU, Wenhui YAO, Chengyu DONG, Jiaji ZHU
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Publication number: 20180331888Abstract: Provided in the disclosed embodiments are methods and apparatuses for switching service nodes in a distributed storage system, the service nodes comprising a current service node and backup service nodes. The method comprises: monitoring response states of the service nodes to a service request; and if a response state of the current service node is abnormal, stopping communication between the current service node and the backup service nodes, and triggering a switching process for the current service node. In the case of a service timeout, service unavailability, service abnormality, or the like caused by a hardware failure or software defect, logic is checked with a service node that performs logical determination and data statistics collection for multiple factors affecting response states of service nodes, thereby achieving autonomous switching and recovery of the service nodes and improving service availability.Type: ApplicationFiled: December 8, 2016Publication date: November 15, 2018Inventors: Wenhui YAO, Junfeng LIU, Shuo HUANG, Haiyong ZHANG, Jiaji ZHU
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Publication number: 20180253506Abstract: Embodiments of the disclosure provide a data write-in method and apparatus. The data write-in method includes: selecting a target replica server from a plurality of replica servers managed by a metadata server according to remaining capacity of the plurality of replica servers; selecting a write-in disk in the target replica server according to remaining capacity and load of disks managed by the target replica server; and storing write-in data into the write-in disk through the target replica server.Type: ApplicationFiled: May 3, 2018Publication date: September 6, 2018Inventors: Chengyu DONG, Jiaji ZHU, Haiyong ZHANG, Feng CAO, Yong WANG, Wenhui YAO, Junping WU, Yang WU, Yuanyuan DONG, Dongzheng WU, Jing LU
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Publication number: 20180129668Abstract: The present invention discloses an intermediate file processing method, client, server, and system, including: receiving, from a first client, a message of writing an intermediate file to a first server; requesting a second server to create cluster information of the intermediate file; after the cluster information is created, receiving the cluster information returned by the second server, wherein the cluster information includes a priority level; and sending the cluster information to the first client and a second client, wherein the intermediate file is uploaded to the first server by the first client, so that the intermediate file is written by the first server according to a local disk load and the priority level of the cluster information, and the intermediate file is read from the first server by the second client according to the cluster information.Type: ApplicationFiled: January 4, 2018Publication date: May 10, 2018Inventors: Jiaji ZHU, Wenhui YAO, Wei XIE