Paypal, Inc.

Shanghai Mobilepeak Semiconductor Co., Ltd.

Xia Zhang

Yu Zhang

Pengshan Zhang

Jiaxin Fang

Haoran Zhang

Junshi Guo

Xiaojun Luan

Jun Li

Xin Wang

Xin Zhang

Ying Yue

Fei Yu

Kun Wang

Jinfeng Yang

Yangxing Liu

Lance Lian

Changle Lian

Tao Ning

Techniques are disclosed for detecting risk via a server system that receives, based on user activity at a device, an indication of a trigger event corresponding to a potential electronic communication. After receiving the trigger event indication and prior to receiving an indication of initiation of the electronic communication, the system executes a set of computations for the communication, including performing a multi-hop query to a graph database storing a graphical representation of a plurality of communications and storing results of the execution. In response to initiation of the electronic communication, the system retrieves, using information corresponding to entities involved in the electronic communication, one or more portions of the results of executing the set of computations the database. The system determines, based on the retrieved results, whether to approve the electronic communication. The disclosed techniques may advantageously decrease unsecure electronic communications relative to real-time risk detection techniques.

Graph computing for electronic communication risk detection

A method for operating a graph database, including receiving, by a computer system, a query to a particular graph database, the query identifying a plurality of vertices of the particular graph database. The method further includes performing, by the computer system, hash operations on two or more of the plurality of vertices to generate respective hash values and dividing, using the respective hash values, the query into a plurality of sub-queries, each corresponding to a subset of the plurality of vertices. The method also includes sending, by the computer system, ones of the plurality of sub-queries to a plurality of database repositories for the particular graph database.

Dual write and dual read access to graph databases

Methods and systems are presented for assisting a user to identify and evaluate features for use in a machine learning model configured to perform a task. Based on graph data associated with a graph data structure, a user interface is provided on a device. Based on user inputs received via the user interface, a feature candidate for the machine learning model is determined. The feature candidate is associated with a particular way of traversing the graph data structure to obtain attribute values associated with one or more vertices and/or one or more edges in the graph data structure. Based on the attribute values, a value corresponding to the feature candidate can be calculated. The value can be used to evaluate the effectiveness of the feature candidate in performing the task. The feature candidate can then be incorporated into the machine learning model as one of the input features.

Graph-based feature engineering for machine learning models

The present invention relates to a paper-breaker touching safety protector, of which the control circuit unit is connected with the paper-breaking machinery part via the motor driving circuit unit, the control circuit unit is connected with the conductive touch panel via the touch detecting circuit unit, the power unit is connected respectively with the control circuit unit and motor driving circuit unit, wherein the touch detecting circuit unit includes the bio-voltage control switch circuit and ground switch circuit, the input control terminal of bio-voltage control switch circuit is connected with the conductive touch panel, the output terminal of control switch circuit is connected with the input control terminal of the ground switch circuit, the output terminal of the ground switch circuit is connected with the input control terminal of the control circuit unit. The paper-breaker touching safety protector with this structure could effect a protective rule from the accident harm and a real-time monitor; the controlling is safe and sensitive with a simple circuit structure and reliable operation performance, it functions a convenient manipulation and wide usability with the safety.

Method improving the cross-layer multimedia transmission quality in cognitive radio networks

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Shanghai, China

Xia Zhang