publié le: 2021
We consider the information extraction framework known as document spanners and study the problem of efficiently computing the results of the extracti...
Window aggregation is a core operation in data stream processing. Existing aggregation techniques focus on reducing latency, eliminating redundant com...
Given a directed edge labeled graph G, to check whether vertex v is reachable from vertex u under a label set S is to know if there is a path from u t...
We establish a principled schema design framework for data with missing values. The framework is based on the new notion of an embedded functional dep...
We study the problem of optimizing one-time and continuous subgraph queries using the new worst-case optimal join plans. Worst-case optimal plans eval...