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Energy FunctionThe scheduler adjusts the energy U of each element depending on the surrounding environment. The stronger energy means that you should observe the comet at the time much more. Finally, if is satisfied, it concludes to observe comet i at the time j and sets as 1. The value of energy is limited as . At first, initialize so that the better the condition is, the larger the energy of the time comes. Here means the corrected magnitude of comet i at time j, means the brightest corrected magnitude of comet i. First, define the square of comet i, , as follows:
If the condition of the comet doesn't change all through a night, it has a smallest square . Here, is the number of times. In that case, the system gives least weight to each time j to observe comet i at the time, because the comet can be observed anytime. On the other hand, if the square is large, the system gives much weight to good condition times because the comet can be observed at only those times. Considering those points, the initial energy is defined as follows:
The definition of the difference of at a step, , is as follows. Here means the corrected magnitude of comet i at the time j and is the brightest value among the corrected magnitude of comet i. At first, it sets as 0, then submits the following rules.
When is calculated,
and goes to next step. The energy adjustment of each element is not a parallel process. The scheduler changes each one by one from to . Therefore, when is adjusted, all the other elements have been adjusted already and is calculated with the new and .

Next: Conditions of Constraint Up: Neural Network Scheduler for Previous: Corrected Magnitude

Go back to Neural Network Scheduler for Comets Observation. Go back to Seiichi Yoshida's Home Page. Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved. Tue Apr 15 03:17:05 JST 1997 