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Liu, X.; Jia, H.: Answering academic questions for education by recommending cyberlearning resources (2013)
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Liu, X.; Turtle, H.: Real-time user interest modeling for real-time ranking (2013)
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Liu, X.; Kaza, S.; Zhang, P.; Chen, H.: Determining inventor status and its effect on knowledge diffusion : a study on nanotechnology literature from China, Russia, and India (2011)
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Liu, X.; Zheng, W.; Fang, H.: ¬An exploration of ranking models and feedback method for related entity finding (2013)
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