Jian Jin
共找到 4 条论著文献

1、Research on scheduling problems with general effects of deterioration and learning

摘要:Jobs with deterioration and learning effect co-exist in many industry engineering and logistics management situations. In this note, the general effects of deterioration and learning are considered. It is proved that some single machine scheduling problems are still polynomially solvable under the proposed model. The note also shows that some results in Lee and Lai’s recent paper (Lee and Lai, 2011) are incorrect by a counterexample.
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2、Optimized angles of the swing hyperspectral imaging system for single corn plant

摘要:During recent years, hyperspectral imaging systems have been widely applied in the greenhouses for plant phenotyping purposes. Current systems are typically designed as either top view or side view imaging mode. Top view is an ideal imaging angle for top leaves with flat leaf surfaces. However, most bottom leaves are either blocked or shaded. From side view, the entire plant structure is viewable. However, most leaf surfaces are not facing the camera, which impacts measurement quality. Besides, there could be advantages with certain tilted angle(s) between top view and side view. It’s interesting to explore the impact of different imaging angles to the phenotyping quality. For this purpose, a swing hyperspectral imaging system capable of capturing images at any angle from side view (0°) to top view (90°) by rotating the camera and the lighting source was designed. Corn plants were grown and allocated into 3 different treatments: high nitrogen (N) and well-watered (control), high N and drought-stressed, and low N and well-watered. Each plant was imaged at 7 different angles from 0° to 90° with an interval of 15°. The soil plant analysis development (SPAD) values and relative water content (RWC) ground truth measurements were used to establish treatment effects. The results showed that averaged plant-level Normalized Difference Vegetation Index (NDVI) values of plants in different treatments changed at different imaging angles. The results also indicated that for pixel-level NDVI distributions, the titled imaging angle of 75° was optimal to distinguish different water treatments, whereas, the tilted imaging angle of 15° was optimal to distinguish different N treatments. For pixel-level RWC distributions, the distribution difference between different water treatments was larger at higher imaging angles.
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3、The Women's representative : three one-act play 1956

4、Autonomous Discovery of Subgoals Using Acyclic State Trajectorie

摘要:Divide and rule is an effective strategy to solve large and complex problems. We propose an approach to make agent can discover autonomously subgoals for task decomposition to accelerate reinforcement learning. We remove the state loops in the state trajectories to get the shortest distance of every state from the goal state, then these states in acyclic state trajectories are arranged in different layers according to the shortest distance of them from the goal state. So, to reach these state layers with different distance to the goal state can be used as the subgoals for agent reaching the goal state eventually. Compared with others, autonomy and robustness are the major advantages of our approach. The experiments on Grid-World problem show the applicability, effectiveness and robustness of our approach.
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