Titlebook: Database Systems for Advanced Applications; 25th International C Yunmook Nah,Bin Cui,Steven Euijong Whang Conference proceedings 2020 Sprin

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Bus Frequency Optimization: When Waiting Time Matters in User Satisfactiontition-based greedy method which achieves a . approximation ratio. Then we propose a progressive partition-based greedy method to further improve the efficiency while achieving a . approximation ratio. Experiments on a real city-wide bus dataset in Singapore verify the efficiency, effectiveness, and

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Incorporating Boundary and Category Feature for Nested Named Entity Recognitionon. In this way, our model achieves better performance of entity extraction. In evaluations on two nested NER datasets and a flat NER dataset, we show that our model outperforms previous state-of-the-art models on nested and flat NER.

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Incorporating Concept Information into Term Weighting Schemes for Topic Modelsument. The DCEP scheme further reduces the co-occurrence of the entities from unrelated concepts and separates them into different duplicates of a document. We develop CEP-LDA and DCEP-LDA term weighting topic models by applying the two proposed term weighting schemes to LDA. Experimental results on

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How to Generate Reasonable Texts with Controlled Attributeso guide each component of our model to collaboratively work for generating reasonable texts based on the learned dependencies, and (3) proposing a novel . metric measuring to which degree generations comply with real co-occurrence dependencies. Experiments prove that DCTG outperforms state-of-the-ar

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