yize.huang

代价函数（cost function）

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yize.huang 4 11 月, 2024 39评论

在一元线性回归中，我们提到为了…

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练习3

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yize.huang 17 10 月, 2024 4评论

例题：（函数, 面向对象编程,…

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一元线性回归

<img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo' height='150' width='150' decoding='async'/>

yize.huang 11 10 月, 2024 2评论

单变量的线性回归模型(line…

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Python文件读写

<img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo' height='150' width='150' loading='lazy' decoding='async'/>

yize.huang 9 10 月, 2024 5评论

在Python中，文件的读写操…

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try,except语句

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yize.huang 8 10 月, 2024 3评论

try,except语句是Py…

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练习2

<img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo' height='150' width='150' loading='lazy' decoding='async'/>

yize.huang 19 9 月, 2024 5评论

例题：（数字&数学，f…

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练习1

<img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' data-src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' data-srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo lazyload' height='150' width='150' loading='lazy' decoding='async' src='data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==' style='--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150/150;' /><noscript><img alt='' src='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=150&d=identicon&r=g' srcset='https://secure.gravatar.com/avatar/b99a2054e7afac54bbcff126293d024a511e0d903787112121bcc6434ec569d0?s=300&d=identicon&r=g 2x' class='avatar avatar-150 photo' height='150' width='150' loading='lazy' decoding='async'/>

yize.huang 19 9 月, 2024 2评论

例题：(for循环，if语句，…

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数据库（Datasets）

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yize.huang 18 9 月, 2024 4评论

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yize.huang 18 9 月, 2024 3评论

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yize.huang 17 9 月, 2024 37评论

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