A new model based on Markov decision processes is proposed and the correlative novel algorithm is implemented with the adaptive ability of improved Q-learning for dynamic grid service selection.

对满足马尔可夫决策过程的服务组合提出了一种支持不完备信息描述的网格服务描述模型，实现了对服务组合整个生命周期的描述。

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The National Grid for Learning was always something of a misnomer, the only "grid" involved being the public internet.

BBC: NEWS | UK | Education | Computer learning 'grid' scrapped

Government-supported initiatives such as UK NetYear and the planned National Grid for Learning have focused on the process of connecting schools to the Internet and providing online materials, rather than on setting lower-rate or free access.

BBC: News | Education | Threat to US schools' Internet subsidy