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由 Tom Mitchell 提出,来自卡内基梅隆大学, Tom 定义的机器学习是,一个好的学习问题定义如下,他说,一个程序被认为能从经验 E 中学习,解决任务 T,达到性能度量值P, 当且仅当,有了经验 E 后,经过 P 评判,程序在处理 T 时的性能有所提升。 我认为经验e 就是程序上万次的自我 阅读全文
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William S. hart was, perhaps, the greatest of all Western stars, fro unlike Gary Cooper and John Wayne he appeared in nothing but Westerns. From 1914 阅读全文
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How it came about that snakes manufactured poison is a mystery. Over the periods their saliva, a mild, digestive juice like our own, was converted int 阅读全文
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It is fairly clear that sleeping period must have some function, and because there is so much of it the function would seem to e important. Speculatio 阅读全文