Southeast University

Nanjing University of Science and Technology

Pei Li

Guang Chen

Yingbo Peng

Zhixiang Qi

Minzhi Wang

Xinde Li

Gong Zheng

Changyin Sun

The present disclosure discloses a place recognition method based on knowledge graph inference; and provides, on the basis of giving a knowledge graph construction method in the place field, a recognition method of general places that is based on knowledge graph inference and can integrate various heterogeneous environmental information, including the following steps: (1) extracting main clues such as the main items that make up the place, the produced events, and the spatial structure from various heterogeneous information, and describing these clues in natural language text; (2) screening the foregoing descriptions by using natural language processing methods, to form place description entities; (3) constructing a knowledge graph in the place field according to the occurrence frequencies of the description entities in an actual environment; and (4) implementing inference and classification based on the knowledge graph by using a Deep Neural Network (DNN), to give a final recognition result. The present disclosure improves the place recognition accuracy by means of knowledge graph inference, and greatly improves semantic interpretability in the place recognition process.

Place recognition method based on knowledge graph inference

A TiAl intermetallic compound single crystal material and a preparation method therefor are disclosed. The alloy composition of the material comprises TiAlNb(C, Si), wherein 43&#x2264;b&#x2264;49, 2&#x2264;c&#x2264;10, a+b+c=100, and 0&#x2264;d&#x2264;1 (at. %).

TiAl intermetallic compound single crystal material and preparation method therefor

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Nanjing, China

Pei Li