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SAT阅读素材:a learning sysstem

2014-11-02 13:19:08来源:网络

  新东方在线为大家精心整理了SAT阅读素材:a learning sysstem的相关内容,分享给大家,供大家参考,希望对大家有所帮助!

  Learning, Rule, Environment and overall planning of a learning sysstem

  The task of learning from environment (what forms environment - www is one for nell) should be specified. It requires the learner (in this case, could be nell) to infer the laws of the environment in terms of its percepts (explain the percepts in details here) and actions, and use the laws to solve problems (what kind of problems?).

  Based on research on problem space creation and discrimination learning, first design an approach in which exploration, rule creation and rule learning are coordinated in a single framework. With this approach, the system Nell creates certain rules by noticing the changes in the environment (web in our case) when actions (updating the web, linking in more info) are taken, and later refines the rules by explaining the failures of their predictions. Unlike many other learning systems, nell treats learning and problem solving as interleaved activities, no training instance nor any concept hierarchy is necessary to start learning. Furthermore, the approach is capable of discovering hidden features from the environment when normal discrimination process fails to make any progress.

  以上就是新东方在线为大家总结的SAT阅读素材:a learning sysstem的相关内容,最后预祝大家在SAT考试中取得优异的成绩!

  ---本文节选自新东方在线论坛


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