Plot koordinat paralel

Analisis Market Basket dengan Python

Isaiah Hull

Visiting Associate Professor of Finance, BI Norwegian Business School

Apa itu plot koordinat paralel?

Plot menampilkan contoh plot koordinat paralel dengan dataset MovieLens.

Kapan menggunakan plot koordinat paralel

Koordinat paralel vs. heatmap.
- Tidak perlu informasi intensitas.
- Hanya ingin tahu apakah aturan ada.
- Ingin kurangi kekusutan visual.

Koordinat paralel vs. scatterplot.
- Ingin info aturan per individu.
- Tidak butuh banyak metrik.
- Hanya ingin meninjau aturan final.

Menyiapkan data

from mlxtend.frequent_patterns import association_rules, apriori

# Load the one-hot encoded data
onehot = pd.read_csv('datasets/movies_onehot.csv')

# Generate frequent itemsets
frequent_itemsets = apriori(onehot, min_support = 0.10, use_colnames = True, max_len = 2)

# Generate association rules
rules = association_rules(frequent_itemsets, metric = 'support', min_threshold = 0.00)

Mengonversi aturan menjadi koordinat

# Convert rules to coordinates.
rules['antecedent'] = rules['antecedents'].apply(lambda antecedent: list(antecedent)[0])
rules['consequent'] = rules['consequents'].apply(lambda consequent: list(consequent)[0])
rules['rule'] = rules.index

# Define coordinates and label
coords = rules[['antecedent','consequent','rule']]

# Print example
print(coords.head(1))

                antecedent        consequent  rule
0  Dark Knight, The (2008)  Inception (2010)     0

Membuat plot koordinat paralel

from pandas.plotting import parallel_coordinates

# Generate parallel coordinates plot
parallel_coordinates(coords, 'rule', colormap = 'ocean')

Membuat plot koordinat paralel

Gambar menunjukkan plot koordinat paralel menggunakan data MovieLens.

Menyempurnakan plot koordinat paralel

# Generate frequent itemsets
frequent_itemsets = apriori(onehot, min_support = 0.01, use_colnames = True, max_len = 2)

# Generate association rules
rules = association_rules(frequent_itemsets, metric = 'lift', min_threshold = 1.00)

# Generate coordinates and print example
coords = rules_to_coordinates(rules)

# Generate parallel coordinates plot
parallel_coordinates(coords, 'rule')

Menyempurnakan plot koordinat paralel

Gambar menunjukkan plot koordinat paralel menggunakan data MovieLens.

Ayo berlatih!

Analisis Market Basket dengan Python