Xiao Ming Zhou

TL;DR: In this article, a method for automatically tuning query performance to prevent query performance regression that may occur during upgrade of the database system from a prior version to a new version is described.

TL;DR: An approach for computing the orientation spatial similarity between two symbolic images is proposed that is not only rotation invariant, but also captures the relative distance and orientation range between objects.

TL;DR: In this paper, the authors present a system for representing markup language document data in a searchable format in a database system, which includes parsing a markup language documents into a data stream, the data stream including a plurality of fields in a predefined format, and optimized field size based on a maximum value of data within each field.

TL;DR: A more succinct and precise definition of spatial relationships in 2D space and a new approach for representing a picture by a set of hashing values that avoids the ambiguity problems that exist in other methods are introduced.

TL;DR: In this article, a path-based query including a complex row pattern and column definition, forming multiple sets of nodes based on simplified row patterns and column definitions, determining ancestor-descendent pairings for the nodes in the column definition set, and utilizing these pairings with the simplified row pattern to return a relational table satisfying the complex pathbased query.