Tencent Technology (shenzhen) Company Limited

Jiawei Jiang

Chen Gong

Lin Huang

Wenjing Zhang

Guoguo Liu

Zhiyong Lan

Yiyong Yang

Huashan Li

Wenpeng Zhang

Yaqin Guo

Leilei Li

Fumin Zhou

Jinming Zhang

Ming Huang

Pin Xiao

Fangcheng Fu

Yinbo Song

Bin Cui

Jiangchao Wu

Mingheng Zhong

Shaobo Liao

Benlong Hu

Yawei Du

Lele Yu

This application discloses a method to train a decision tree model. The method is performed by a training system. The training system includes N processing subnodes and a main processing node, N being a positive integer greater than 1. The method includes separately obtaining, by each processing subnode for a currently being trained tree node, a node training feature set and gradient data of the currently being trained tree node; separately determining, by each of the processing subnode, a local splitting rule for the currently being trained tree node according to the node training feature set and the gradient data that are obtained, and transmitting the local splitting rule to the main processing node; and selecting, by the main processing node, a splitting rule corresponding to the currently being trained tree node from the local splitting rule determined by each of the processing subnode.

Training method and system for decision tree model, storage medium, and prediction method

A method and system for distributed machine learning and model training are disclosed. In particular, a finite asynchronous parallel training scheme is described. The finite asynchronous parallel training takes advantage of the benefits of both asynchronous parallel training and synchronous parallel training. The computation delays in various distributed computation nodes are further considered when training parameter are updated during each round of iterative training. The disclosed method and system facilities increase of model training speed and efficiency.

Distributed machine learning method and system

The present disclosure discloses a method and an apparatus for displaying online transaction information. The method includes: displaying a first transaction information page on a terminal; sending first order information based on the first transaction information display page by a terminal to a server; sending first payment information by a server to the terminal in response to the first order information; and displaying a second transaction information display page including the first order information and the first payment information. The first order information is modifiable on the first and the second transaction information display page. The first payment information includes a plurality of payment platform identifiers from which a user can select to complete the online transaction.

Method and apparatus for displaying transaction information

The present disclosure discloses a method, a device, and a system for updating authenticating information in the field of Internet technologies. The method comprises: receiving a service processing request containing user information and service object information; extracting according to the user information, first authentication information associated with the service object information from prestored authentication information; authenticating the first authentication information; displaying an information update interface when the first authentication information fails to be authenticated; obtaining second authentication information from the information update interface; replacing the first authentication information with the second authentication information; authenticating the second authentication information; and processing the service processing request if the second authentication information is authenticated.

Method, device, and system for updating authentication information

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Shenzhen, China

Jiawei Jiang