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Machine Learning by Mind Map: Machine Learning
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Machine Learning

Training process

Hints

Normalisation

Training examples

Dimension reduction (PCA)

Plot learning curves

Plot learning curves to decide if more data, more features, etc. are likely to help.

Regularisation

Увеличивает значение ценовой функции. Если значения переменных сета растут, то регуляризация увеличивает значение ценовой функции. Сета 0 (коэффициент перед константным = 1 элементом в функции гипотезе) не используется при подсчете

Error analysis

Manually examine the examples in cross validation set that your algorithm made errors on. See if you spot any systematic trend in what type of examples it is making errors on.

Classification error analysis

Supervised

Normal equations

Gradient decent

Unsupervised

Clustering

Anomaly detection

Requires proper statistics

Use when

Use gradient decent instead when

Basic model

Multivariate model