Titlebook: Data Science; 5th International Co Xiaohui Cheng,Weipeng Jing,Zeguang Lu Conference proceedings 2019 Springer Nature Singapore Pte Ltd. 201

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https://doi.org/10.1007/978-3-642-82416-6tion methods based on economic perspective and research on data value assessment methods based on text analysis. For each method, it indicated the main ideas, application scenarios, advantages and disadvantages.

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Oracle Bone Inscriptions Big Knowledge Management and Service Platformlligent knowledge service platform. Its goal is to make full use of OBI big data characteristics and use the knowledge engineering technology to build an OBI knowledge ecosystem. The experiment results show that the platform proposed provides effective one-stop knowledge management and knowledge service.

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Cost Optimization Strategy for Long-Term Storage of Scientific Workflow data” on relatively inexpensive secondary and tertiary storage, and ensures that the time delay caused by three-level storage does not exceed the deadline. Compared with other storage methods, the experimental result shows the strategy proposed can guarantee the time delay while reducing the cost of users significantly in long-term storage.

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Benign Strategy for Recommended Location Service Based on Trajectory Datalized system structure location services. In the strategy based on distributed system architecture, individual user information profiles were established using daily trajectory information and neighboring user groups were established using density measure. Then the trajectory similarity and profile

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