tree contraction造句

Based on the research and work on parallel tree contraction, various algorithms have been proposed targeting to improve the efficiency or simplicity of this topic.
Parallel tree contraction was introduced by Gary L . Miller and John H . Reif, and has subsequently been modified to improve efficiency by X . He and Y . Yesha, Hillel Gazit, Gary L . Miller and Shang-Hua Teng and many others.
In computer science, "'parallel tree contraction "'is a broadly applicable technique for the parallel solution of a large number of tree problems, and is used as an algorithm design technique for the design of a large number of parallel graph algorithms.
Tree contraction has been used in designing many efficient parallel algorithms, including expression evaluation, finding lowest common ancestors, tree isomorphism, graph isomorphism, maximal subtree isomorphism, common subexpression elimination, computing the 3-connected components of a graph, and finding an explicit planar embedding of a planar graph
It's difficult to find tree contraction in a sentence. 用tree contraction造句挺难的