Hoppa till huvudinnehåll

course

Modeling with tidymodels in R

MellanliggandeFärdighetsnivå

Uppdaterad 2022-07

Learn to streamline your machine learning workflows with tidymodels.

Börja Kursen Gratis

RMachine Learning

4 timmar

16 videos

59 exercises

4,950 XP

10,713

Uttalande om prestation

Skapa ditt gratiskonto

eller

Genom att fortsätta accepterar du våra Användarvillkor, vår Integritetspolicy och att dina uppgifter lagras i USA.

Älskad av elever på tusentals företag

Training a Team?

Try for Business

Kursbeskrivning

Tidymodels is a powerful suite of R packages designed to streamline machine learning workflows. Learn to split datasets for cross-validation, preprocess data with tidymodels' recipe package, and fine-tune machine learning algorithms. You'll learn key concepts such as defining model objects and creating modeling workflows. Then, you'll apply your skills to predict home prices and classify employees by their risk of leaving a company.

Förkunskapskrav

Modeling with Data in the Tidyverse

1

Machine Learning with tidymodels

In this chapter, you’ll explore the rich ecosystem of R packages that power tidymodels and learn how they can streamline your machine learning workflows. You’ll then put your tidymodels skills to the test by predicting house sale prices in Seattle, Washington.

The tidymodels ecosystem

Tidymodels packages

Creating training and test datasets

Distribution of outcome variable values

Linear regression with tidymodels

Fitting a linear regression model

Exploring estimated model parameters

Predicting home selling prices

Evaluating model performance

Model performance metrics

R squared plot

Complete model fitting process with last_fit()

2

Classification Models

Learn how to predict categorical outcomes by training classification models. Using the skills you’ve gained so far, you’ll predict the likelihood of customers canceling their service with a telecommunications company.

Classification models

Data resampling

Fitting a logistic regression model

Combining test dataset results

Assessing model fit

Calculating metrics from the confusion matrix

Evaluating performance with yardstick

Creating custom metric sets

Visualizing model performance

Plotting the confusion matrix

ROC curves and area under the ROC curve

Automating the modeling workflow

Streamlining the modeling process

Collecting predictions and creating custom metrics

Complete modeling workflow

3

Feature Engineering

Find out how to bake feature engineering pipelines with the recipes package. You’ll prepare numeric and categorical data to help machine learning algorithms optimize your predictions.

Feature engineering

Exploring recipe objects

Creating recipe objects

Training a recipe object

Numeric predictors

Discovering correlated predictors

Removing correlated predictors with recipes

Multiple feature engineering steps

Nominal predictors

Applying step_dummy() to predictors

Ordering of step_*() functions

Complete feature engineering pipeline

Complete modeling workflow

Feature engineering process

Model training and prediction

Model performance metrics

4

Workflows and Hyperparameter Tuning

Now it’s time to streamline the modeling process using workflows and fine-tune models with cross-validation and hyperparameter tuning. You’ll learn how to tune a decision tree classification model to predict whether a bank's customers are likely to default on their loan.

Machine learning workflows

Exploring the loans dataset

Specifying a model and recipe

Creating workflows

Estimating performance with cross validation

Measuring performance with cross validation

Cross validation with logistic regression

Comparing model performance profiles

Hyperparameter tuning

Setting model hyperparameters

Random grid search

Exploring tuning results

Selecting the best model

Finalizing a workflow

Training a finalized workflow

Congratulations!

Modeling with tidymodels in R

Kursen
är

Få ett prestationsutlåtande

Lägg till denna inloggningsuppgifter i din LinkedIn-profil, ditt CV eller ditt CV
Dela det på sociala medier och i ditt prestationssamtalRegistrera Dig Nu

Gå med över 19 miljoner elever och börja Modeling with tidymodels in R idag!

Skapa ditt gratiskonto

eller

Genom att fortsätta accepterar du våra Användarvillkor, vår Integritetspolicy och att dina uppgifter lagras i USA.

Utveckla dina datakunskaper med DataCamp för mobilen

Gör framsteg när du är på språng med våra mobila kurser och dagliga 5-minuters kodningsutmaningar.