ICST Math Retrieval System for NTCIR-11 Math-2 Task
Liangcai Gao, Yuehan Wang, Leipeng Hao, Zhi Tang · 2014
In NTCIR-11, the NTCIR-Math-2 Task is organized for mathematical information retrieval. This paper proposes an innovative system for efficient formula index and retrieval. We build a novel indexing and matching model, taking both textual and spatial similarities into consideration. Besides, a hierarchical technique is introduced to generate sub-trees from the semi-operator trees of formulae. The experimen-tal results demonstrate that the method of our system is effective and promising in practical application.