Plot jumlah kemungkinan keranjang

Dalam latihan ini, Anda akan melihat secara visual betapa cepatnya jumlah kemungkinan keranjang bertambah sebagai fungsi dari ukuran himpunan item. Hal ini akan menggambarkan salah satu tantangan utama dalam Market Basket Analysis, yaitu banyaknya cara yang mungkin untuk membuat sebuah keranjang. Di sini Anda akan menggunakan stat_function(); fungsi ini memungkinkan Anda menentukan, di dalam pemanggilan ggplot(), fungsi mana yang ingin Anda plot dengan menyetel argumen fun.

Latihan ini adalah bagian dari kursus

Analisis Keranjang Belanja di R

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Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

# Define number of items in the set
n_items = ___

# Specify the function to be plotted
fun_combi = function(x) choose(___, ___)

# Plot the number of combinations
ggplot(data = data.frame(x = 0), mapping = aes(x = ___)) +
		stat_function(fun = ___) + xlim(0,n_items)

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Latihan ini adalah bagian dari kursus

Analisis Keranjang Belanja di R

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Mulai Kursus Gratis

What’s in your basket? In this first chapter, you’ll learn how market basket analysis (MBA) can be used to look into baskets and dig into itemsets to better understand customers and predict their needs. Using tidyverse and dplyr you’ll discover how many baskets can be created from a given set of items, and learn the power of using market basket analysis for online shopping, offline shopping, and use cases beyond retail.

Exercise 1: Pengantar market basket Exercise 2: Keranjang dan item Exercise 3: Satu keranjang Exercise 4: Apa yang ada di keranjang?Exercise 5: Kombinasi item Exercise 6: Jumlah keranjang yang mungkin Exercise 7: Himpunan bagian dan himpunan pemuat Exercise 8: Plot jumlah kemungkinan keranjang

Latihan Saat Ini

Exercise 9: Apa itu market basket analysis?Exercise 10: Dua keranjang Exercise 11: Beberapa keranjang Exercise 12: Melihat item tertentu

In this chapter, you’ll convert transactional datasets to a basket format, ready for analysis using the Apriori algorithm. You’ll then be introduced to the three main metrics for market basket analysis: support, confidence, and lift, before getting hands-on with the Apriori algorithm to extract rules from a transactional dataset. Lastly, You explore how the arules package is used for market basket analysis to retrieve basket rules and to help you find the most informative and relevant rules.

Exercise 1: Transactional data Exercise 2: Transactionalizing the online data frame Exercise 3: Inspector retail Exercise 4: Density of the item matrix?Exercise 5: Metrics in market basket analysis Exercise 6: The support measure Exercise 7: Confidence and lift measures Exercise 8: Changing the appearance of rules Exercise 9: The apriori algorithm Exercise 10: Apriori principle Exercise 11: Let's go shopping for rules Exercise 12: Parameters of the apriori Exercise 13: “If this then that” with the apriori Exercise 14: Playing with the appearance Exercise 15: Redundant rules Exercise 16: Interpretation of rules

Let’s get visual. In this chapter, you’ll visually inspect the set of rules you have previously extracted. Visualizations in market basket analysis are vital given that often you are dealing with large sets of extracted rules. You’ll use the arulesViz package to create barplots, scatterplots, and graphs to visualize your sets of inferred rules. You’ll then turn sets of plots into interactive plots, making it is easier to drill into the mined association rules.

Exercise 1: Let's see what's in the basket Exercise 2: What's in the basket?Exercise 3: What's most popular ?Exercise 4: Getting fancy with the visuals Exercise 5: Visualizing metrics Exercise 6: Scatterplots Exercise 7: ArulesViz plots Exercise 8: Bringing rules to life Exercise 9: From rules to graph based visualizations Exercise 10: Playing with graphs Exercise 11: Understanding the graph Exercise 12: Portability of your graph Exercise 13: Alternative rule plots Exercise 14: Group matrix based visualizations Exercise 15: Parallel coordinates plots Exercise 16: Mastering the RuleExplorer

We’re going to the movies. In this final chapter, you’ll apply everything you’ve learned as you work with a movie dataset. Using market basket analysis you’ll turn this dataset into a movie recommendation system, using information from movie transactions to understand and predict what your audience might want to watch next.

Exercise 1: Recap on transactions Exercise 2: Gettting familiar with the MovieLens dataset Exercise 3: Movie transactions Exercise 4: Frequency plots Exercise 5: Mining association rules Exercise 6: Popularity of movies Exercise 7: Picking the right movie parameters Exercise 8: Extracting movie rules Exercise 9: Visualizing transactions and rules Exercise 10: Where is Pulp Fiction?Exercise 11: Visualizing movie rules Exercise 12: Our favorite movies as a graph Exercise 13: Making the most of market basket analysis Exercise 14: What influenced Pulp Fiction?Exercise 15: What did Pulp Fiction influence?Exercise 16: Use your market basket skills!