Fengfei Zhao

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UML class diagram layout is an important task in software visualization to enhance people's comprehension about the systems. In this paper, we describe a novel UML class diagram layout algorithm, called rank-directed method, which captures the difference in relationships among classes and stresses significant classes. As a layout algorithm, rank-directed(More)
Reinforcement learning (RL) in real-world problems requires function approximations that depend on selecting the appropriate feature representations. Representational expansion techniques can make linear approximators represent value functions more effectively; however, most of these techniques function well only for low dimensional problems. In this paper,(More)
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