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Educational images are increasingly becoming available online, but an effective method to search for such images is nonexistent, particularly for graph-based digital resources. This paper focuses on plane geometry figure (PGF) retrieval with ranking optimization to retrieve relevant digital geometry materials. A learning to rank model is introduced to rearrange the unsatisfactory order of highly similar...
Feature selection is a process which chooses a subset from the original feature set according to some rules. The selected feature retains original physical meaning and provides a better understanding for the data and learning process. However, few modern feature selection approaches take the advantage of features' context information. Based on this analysis, we propose a novel feature selection method...
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