摘要：To solve the low efficiency of approximate queries caused by the large sizes of the knowledge graphs in the real world,an embedding-based approximate query method is ***,the nodes in the query graph are classified according to the degrees of approximation required for different types of *** classification transforms the query problem into three constraints,from which approximate information is ***,candidates are generated by calculating the similarity between ***,a deep neural network model is designed,incorporating a loss function based on the high-dimensional ellipsoidal diffusion *** model identifies the distance between nodes using their embeddings and constructs a score function.k nodes are returned as the query *** results show that the proposed method can return both exact results and approximate matching *** datasets DBLP(DataBase systems and Logic Programming)and FUA-S(Flight USA Airports-Sparse),this method exhibits superior performance in terms of precision and recall,returning results in 0.10 and 0.03 s,*** indicates greater efficiency compared to PathSim and other comparative methods.

摘要：集中式控制方法难以满足未来电网分布式电源大量接入以及即插即用的技术要求。为进一步提升分布式控制方法的实用性,提出一种基于连续时间投影梯度算法的分布式电源功率协同控制方法。相比于目前基于一致性算法的控制方法,所提控制方法不需要假设系统负荷总量已知,不用人为设计算法初值,仅利用投影算子对分布式电源出力进行约束,即可自动运行到经济调度的最优点,显著提高了分布式控制方法的实用性。最后,算例验证了所提方法的有效性。

摘要：针对航空精密偶件设计了一种分布式测量系统,采用现场总线技术将分散在车间各处的测量仪表组成测量网络,基于容错机制设计上位机监控软件,采集零件测量数据,从而实现对测量数据的集中管理,实验表明该方案可靠性高,扩展性好,在制造现场中有很好的应用价值。