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翻译scikit-learn Cookbook
学习sklearn
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Feature selection on L1 norms在L1范数下的特征选择
线性回归
We're going to work with some ideas similar to those we saw in the recipe on Lasso Regression.In that recipe, we looked at the number of features that had zero coefficients.Now we're going to take this a step further and use the spareness associated with L1 norms to preprocess the features.
到不了的都叫做远方
2019-12-19
917
0
Using k-NN for regression使用K-NN来做回归模型
线性回归
Regression is covered elsewhere in the book, but we might also want to run a regression on "pockets" of the feature space. We can think that our dataset is subject to several data processes. If this is true, only training on similar data points is a good idea.
到不了的都叫做远方
2019-11-26
454
0
Using sparsity to regularize models使用稀疏性来正则化模型
线性回归
scikit-learn
机器学习
神经网络
深度学习
The least absolute shrinkage and selection operator (LASSO) method is very similar to ridge regression and LARS. It's similar to Ridge Regression in the sense that we penalize our regression by some amount, and it's similar to LARS in that it can be used as a parameter selection, and it typically leads to a sparse vector of coefficients.
到不了的都叫做远方
2019-11-14
534
0
Using ridge regression to overcome linear regression's shortfalls
线性回归
In this recipe, we'll learn about ridge regression. It is different from vanilla linear regression;it introduces a regularization parameter to "shrink" the coefficients. This is useful when the dataset has collinear factors.
到不了的都叫做远方
2019-11-12
406
0
Evaluating the linear regression model评估线性回归模型
matlab
python
numpy
线性回归
In this recipe, we'll look at how well our regression fits the underlying data. We fit a regression in the last recipe, but didn't pay much attention to how well we actually did it. The first question after we fit the model was clearly "How well does the m
到不了的都叫做远方
2019-11-11
931
0
Fitting a line through data一条穿过数据的拟合直线
线性回归
api
Now, we get to do some modeling! It's best to start simple; therefore, we'll look at linear regression first. Linear regression is the first, and therefore, probably the most fundamental model—a straight line through data.
到不了的都叫做远方
2019-11-11
483
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2 Working with Linear Models 2 线性模型
线性回归
机器学习
神经网络
深度学习
人工智能
In this chapter, we will cover the following topics:在这章,将涵盖以下主题:
到不了的都叫做远方
2019-11-10
451
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