自动机器学习

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Automated machine learning (AutoML) is the process of automating the process of applying machine learning to real-world problems. AutoML covers the complete pipeline from the raw dataset to the deployable machine learning model. AutoML was proposed as an artificial intelligence-based solution to the ever-growing challenge of applying machine learning. The high degree of automation in AutoML allows non-experts to make use of machine learning models and techniques without requiring to become an expert in this field first.

Automated machine learning (AutoML) is the process of automating the process of applying machine learning to real-world problems. AutoML covers the complete pipeline from the raw dataset to the deployable machine learning model. AutoML was proposed as an artificial intelligence-based solution to the ever-growing challenge of applying machine learning. The high degree of automation in AutoML allows non-experts to make use of machine learning models and techniques without requiring to become an expert in this field first.

自动机器学习 Automated machine learning，AutoML是可以把机器学习应用于实际问题这一过程自动化的方法。自动机器学习涵盖了从原始数据集到可部署机器学习模型的整个流程。作为一种基于人工智能的解决方案，自动机器学习被提出来应对机器学习应用方面的日益增长的挑战。自动机器学习中的高度自动化允许非专家使用机器学习模型和技术并且不需要首先成为这个领域的专家。

Automating the process of applying machine learning end-to-end additionally offers the advantages of producing simpler solutions, faster creation of those solutions, and models that often outperform hand-designed models.

Automating the process of applying machine learning end-to-end additionally offers the advantages of producing simpler solutions, faster creation of those solutions, and models that often outperform hand-designed models.

在机器学习的应用中，将端到端的过程自动化还提供了更多的优势：生成更简单的解决方案、更快地创建这些解决方案以及在通常情况下优于人工设计的模型。

Comparison to the standard machine learning approach

与通常的机器学习方法的比较

In a typical machine learning application, practitioners have a dataset consisting of input data points to train on. The raw data itself may not be in a form such that all algorithms may be applicable to it out of the box. An expert may have to apply appropriate data pre-processing, feature engineering, feature extraction, and feature selection methods that make the dataset amenable for machine learning. Following those preprocessing steps, practitioners must then perform algorithm selection and hyperparameter optimization to maximize the predictive performance of their machine learning model. Clearly all of those steps induce their own challenges, accumulating to a significant hurdle to get started with machine learning.

In a typical machine learning application, practitioners have a dataset consisting of input data points to train on. The raw data itself may not be in a form such that all algorithms may be applicable to it out of the box. An expert may have to apply appropriate data pre-processing, feature engineering, feature extraction, and feature selection methods that make the dataset amenable for machine learning. Following those preprocessing steps, practitioners must then perform algorithm selection and hyperparameter optimization to maximize the predictive performance of their machine learning model. Clearly all of those steps induce their own challenges, accumulating to a significant hurdle to get started with machine learning.

在一个典型的机器学习应用程序中，程序的使用者有一个由输入数据点组成的数据集来进行训练。原始数据本身的形式可能并不适用于所有算法。专家可能需要应用适当的数据预处理、特征工程、特征提取和特征选择这样的方法，使数据集适合机器学习。按照这些预处理步骤，从业人员必须执行算法选择和超参数优化，以最大限度地提高他们的机器学习模型的预测性能。显然，所有这些步骤都为自身带来了挑战，当累积到了一定程度就成为机器学习的一个重大障碍。

A downside are the additional parameters of AutoML tools, which may need some expertise to be set themselves. Although those hyperparameters exist, AutoML simplifies the application of machine learning for non-experts dramatically.

A downside are the additional parameters of AutoML tools, which may need some expertise to be set themselves. Although those hyperparameters exist, AutoML simplifies the application of machine learning for non-experts dramatically.

自动机器学习这一工具的不足之处就是需要附加参数，这些参数可能需要一些专业知识来设置。尽管有这些超参数存在，但是自动机器学习依旧极大地简化了非专家机器学习的应用。

Targets of automation

自动机器学习的目标

Automated machine learning can target various stages of the machine learning process. Essentially the targets can be grouped into the fields data preparation, feature engineering, model selection, selection of evaluation metrics, and hyperparameter optimization.

Automated machine learning can target various stages of the machine learning process. Essentially the targets can be grouped into the fields data preparation, feature engineering, model selection, selection of evaluation metrics, and hyperparameter optimization.

自动机器学习可以针对机器学习过程的不同阶段。从本质上讲，目标可以分为数据准备、特征工程、模型选择、评价指标的选择和超参数优化。

• Automated data preparation and ingestion (from raw data and miscellaneous formats)

自动化[数据准备]和数据摄入（从原始数据到混杂格式）

• • Automated column type detection; e.g., boolean, discrete numerical, continuous numerical, or text

自动数据类型检测，例如：布尔变量，离散数值，连续数值或者文本

• • Automated column intent detection; e.g., target/label, stratification field, numerical feature, categorical text feature, or free text feature

• • Automated task detection; e.g., binary classification, regression, clustering, or ranking

• Automated feature engineering

• • Feature selection

• • Feature extraction

• • Meta learning and transfer learning

• • Detection and handling of skewed data and/or missing values

• Automated model selection

• Hyperparameter optimization of the learning algorithm and featurization

• Automated pipeline selection under time, memory, and complexity constraints

• Automated selection of evaluation metrics / validation procedures

• Automated problem checking

• • Leakage detection

• • Misconfiguration detection

• Automated analysis of results obtained

• User interfaces and visualizations for automated machine learning

See also

• Neural architecture search

神经架构搜索

• Hyperparameter optimization

超参数优化

• Model selection

模型选择

• Neuroevolution

神经进化

• Self-tuning

自优化

References

Category:Machine learning

分类: 机器学习

Category:Artificial intelligence

类别: 人工智能

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