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Liu, D.-R.; Shih, M.-J.: Hybrid-patent classification based on patent-network analysis (2011)
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Shen, M.; Liu, D.-R.; Huang, Y.-S.: Extracting semantic relations to enrich domain ontologies (2012)
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Liu, D.-R.; Lai, C.-H.; Chen, Y.-T.: Document recommendations based on knowledge flows : a hybrid of personalized and group-based approaches (2012)
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Liu, D.-R.; Chen, Y.-H.; Shen, M.; Lu, P.-J.: Complementary QA network analysis for QA retrieval in social question-answering websites (2015)
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