Methods like decision trees, random forest, gradient boosting are being popularly used in all kinds of data science problems.
随机森林天然可用来对回归或分类问题中变量的重要性进行排序。
Random forests can be used to rank the importance of variables in a regression or classification problem in a natural way.
决策树、随机森林、gradientboosting等方法被广泛用于各种数据学科问题中。
Methods like decision trees, random forest, gradient boosting are being popularly used in all kinds of data science problems.
例如:你可能会很快了解随机森林如何运作,但了解其背后的逻辑需要额外的努力。
For example: You might quickly understand how does a random forest work, but understanding the logic behind it's working would require extra efforts.
基于树的算法:决策树、随机森林和提升树等基于树的算法用于解决分类和回归问题。
Tree-Based algorithms: Tree-based algorithms such as decision trees, Random Forests, and Boosted trees are used to solve both classification and regression problems.
在这篇文章中,您将学习随机森林算法如何工作以及其他几个重要的事情。
In this post, you are going to learn, how the random forest algorithm works and several other important things about it.
在随机森林中,集成的每一棵树都是从训练集中用替换(例如,引导样本)绘制样本构建的。
In random forests, each tree in the ensemble is built from a sample drawn with replacement(i.e. a bootstrap sample) from the training set.
相比之下,随机森林模型正确预测了约64%的过早死亡,而考克斯模型只确定了约44%。
By comparison, the random forest model correctly predicted about 64 percent of premature deaths, while the Cox model identified only about 44 percent.
Deep learning is so popular these days,we will study some interesting commonalities between random forests, AdaBoost, and deep learning neural networks.
随机森林模型也成功地应用于稀疏训练集和无样本预测,这表明了其在促进合成方法采用方面的价值。
The random forest model was also successfully applied to sparse training sets and out-of-sample prediction, suggesting its value in facilitating adoption of synthetic methodology.
像随机森林这种模型可解释性稍差,更适合“机器学习”的描述,而深度学习等方法则难以解释。
Models like random forests are less interpretable, More suitable“ machine learning” Description, But deep learning is hard to explain.
Their natural extension is the Random Forest, which combines hundreds or thousands of trees to gain predictive power at the expense of interpretability.
The Random Forest algorithm will take a random sample of 100 observations and five randomly chosen initial variables to build a CART model to work through.
Scikit-learn配备了各种ML模型,包括线性和逻辑回归器、SVM分类器和随机森林。
SciKit-Learn is equipped with a variety of ML models including linear and logistic regressors,SVM classifiers, and random forests.
集成建模的最佳示例是随机森林,其中许多决策树用于预测结果。
A best example of ensemble modelling is the random forest trees where many decision trees are used for predicting the results.
我们注意到产业界数据科学家更倾向使用回归算法、可视化、统计算法、随机森林算法和时间序列。
We note that Industry Data Scientists are more likely to use Regression, Visualization,Statistics, Random Forests, and Time Series.
随机森林算法可被用于很多不同领域,如银行,股票市场,医药和电子商务。
The random forest algorithm is used in a lot of different fields, like Banking, Stock Market, Medicine and E-Commerce.
在机器学习中,我们经常使用“黑盒子”方法-[也叫做分类算法]、随机森林或更深入的学习方法。
In machine learning,we often use“black-box” methods-[classification algorithms called] random forests, or deeper learning approaches.
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