Zhejiang Bangsun Technology Co., Ltd.

Advanced New Technologies Co., Ltd.

Lu Jin

Wei Chen

Tao Huang

Yang Gao

Ping Lu

Xingen Wang

Xinyu Wang

Long Chen

Hanxiao Xiao

Yujiang Liu

Zihao Zeng

Fengxiang Ding

Biao Zhang

Xing Yao

Zixi Liu

Yuanchao Zhang

Hongdong Zheng

Provided is an aggregation index structure and an aggregation index method for improving aggregation query efficiency. The aggregation index partitions streaming data through two dimensions of grouping and slicing, and then aggregates the partitioned data. The structure includes index metadata, a sliced data list and a detailed data store; the aggregation index method includes three parts: aggregation index definition, aggregation index creation and aggregation index query. The aggregation index structure and method provided by the present disclosure can greatly improve the efficiency of aggregation query, support the ad hoc aggregation query of PB-level data, complete the aggregation query of a large amount of data in seconds, support the insertion of new data at any time, and return the query results in minutes or even seconds latency in the event of changes of the query range conditions.

Structure and method of aggregation index for improving aggregation query efficiency

Provided is a method for reverse real-time matching based on event-driven graph patterns. The method includes definition of a graph pattern, establishment of reverse matching architecture and a reverse matching method; and the graph pattern is used for describing a spatial connection relationship among vertices and edges in a graph in a reverse order and attribute constraints thereof, and includes a linked list of matching steps and matching contexts. Reverse real-time matching of the graph pattern is realized according to the reverse matching architecture, and the problem of event-driven subgraph matching in a real-time scene is solved.

Method for reverse real-time matching based on event-driven graph patterns

A method for accessing a service system includes: receiving fingerprint information of a to-be-verified terminal device and identification information of a to-be-verified user from a login computer system based on a service access instruction to access the service server; verifying, according to the fingerprint information of the to-be-verified terminal device and the identification information of the to-be-verified user, whether the to-be-verified terminal device is a specified device of the to-be-verified user based on a specified device database, the specified device database comprising identification information of each user and fingerprint information of a specified device of each user; determining, according to a result of the verifying, whether to allow the login computer system to access the service server according to the service access instruction; and if yes, sending a notification to the login computer system to enable the login computer system to access the service server.

Method and apparatus for accessing service system

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Hangzhou, China

Lu Jin