Given an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a linear runtime comp...
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其他好文 时间:
2014-11-18 23:22:33
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206
Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity...
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其他好文 时间:
2014-11-18 23:06:47
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188
Machine Learning:Neural Network---Representation
Non-Linear Classification
如果还采取简单的线性分类手段,那么会面临着过拟合以及效率低下的问题(如图所示),然而neural network则可以很好的解决非线性分类问题。
Model representation
第一层称为input la...
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Web程序 时间:
2014-11-18 00:30:10
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290
Single NumberGiven an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runti...
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其他好文 时间:
2014-11-17 22:27:14
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249
Let $X$ be nay basis of $\scrH$ and let $Y$ be the basis biorthogonal to it. Using matrix multiplication, $X$ gives a linear transformation from $\bbC...
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其他好文 时间:
2014-11-16 11:53:20
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169
Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity...
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其他好文 时间:
2014-11-15 11:18:50
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137
Given an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a linear runtime comp...
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其他好文 时间:
2014-11-14 22:44:04
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231
train_data是训练特征数据, train_label是分类标签。Predict_label是预测的标签。MatLab训练数据, 得到语义标签向量 Scores(概率输出)。1.逻辑回归(多项式MultiNomial logistic Regression)Factor = mnrfit(tr...
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其他好文 时间:
2014-11-13 20:41:50
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211
Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complex...
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其他好文 时间:
2014-11-13 16:03:20
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139
大多数分类器都是01分类器,如logistic regression。当我们要将数据分为多类的时候,可以用一种叫one-vs-all的方法将01分类器用于多类分类(mult-class classification)原理很简单,训练与类数(k)相同个数的分类器,每个分类器只判断每个item是否属于某...
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其他好文 时间:
2014-11-13 10:47:29
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193