Abstract
Ontology mapping is an important research topic in information retrieval and widely used in many fields. By analyzing the ranking algorithm by optimizing NDCG measure, we propose the new algorithm for ontology mapping. Via the ranking learning algorithm, the multi-ontology graphs are mapped into a line consisting of real numbers. The similarity between two concepts then can be measured by comparing the difference between their corresponding real numbers. The experimental results show that the proposed new algorithm is of high accuracy and efficiency on ontology similarity calculation in physics education.
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