Beijing Didi Infinity Technology and Development Co., Ltd.

Sixu Li

Fan Yang

Pei Li

Xiang Wan

Lei Hu

Wenjun Yang

Shi Cheng

Zang Li

A method for issuing coupons to a plurality of target users is provided. For each of the plurality of target users, the method may include determining a predicted value of a group indicator of the target user in a predetermined period. The method may further include grouping the plurality of target users using a plurality of grouping strategies. For each of the grouping strategies, the method may further include determining a candidate coupon issuing strategy. For each of the candidate coupon issuing strategies, the method may further include obtaining user feature information of one or more target users in each group corresponding to the candidate coupon issuing strategy. For each of the candidate coupon issuing strategies, the method may further include predicting an ROI of the candidate coupon issuing strategy based on an RO prediction model and the corresponding user feature information.

Systems and methods for coupon issuing

The present disclosure is related to systems and methods for determining an optimal strategy. The method includes classify one or more users into a first user group and a second user group using an optimization model, wherein the first user group and the second user group correspond to two strategies, respectively. The method also includes obtain behavior data from terminals of the one or more users in the first user group and the second user group. The method further includes determine a first value of a parameter regarding the first user group and a second value of the parameter regarding the second user group using the optimization model. The method further includes determine a strategy based on the first value and the second value.

Systems and methods for determining an optimal strategy

The present disclosure provides systems and methods for providing database query service to a user. The method may comprise: obtaining, a query request to query a database, wherein the database includes a plurality of data tables; determining one or more target data tables among the plurality of data tables based on the service request; generating a directed graph based on the plurality of data tables, wherein the directed graph includes one or more segment, each of which links two data tables; determining a reference data table among the one or more target data tables; for each of the one or more target data tables, traversing the directed graph to determine a target path with the shortest distance between the reference data table and a target data table; and, querying the database based on one or more target paths with the shortest paths.

Systems and methods for querying a database

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Beijing, China

Sixu Li