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Arctic Penguin Exploration: Unraveling Clusters in the Icy Domain with K-means clustering
source: @allison_horst https://github.com/allisonhorst/penguins
You have been asked to support a team of researchers who have been collecting data about penguins in Antartica!
Origin of this data : Data were collected and made available by Dr. Kristen Gorman and the Palmer Station, Antarctica LTER, a member of the Long Term Ecological Research Network.
The dataset consists of 5 columns.
- culmen_length_mm: culmen length (mm)
- culmen_depth_mm: culmen depth (mm)
- flipper_length_mm: flipper length (mm)
- body_mass_g: body mass (g)
- sex: penguin sex
Unfortunately, they have not been able to record the species of penguin, but they know that there are three species that are native to the region: Adelie, Chinstrap, and Gentoo, so your task is to apply your data science skills to help them identify groups in the dataset!
# Import Required Packages
import pandas as pd
import matplotlib.pyplot as plt
from sklearn.decomposition import PCA
from sklearn.cluster import KMeans
from sklearn.preprocessing import StandardScaler
# Loading and examining the dataset
penguins_df = pd.read_csv("data/penguins.csv")
penguins_df
penguins_df = penguins_df.dropna()
penguins_df
penguins_df.isnull().sum()
penguins_df.describe()
import seaborn as sns
for i in penguins_df.columns[:-1]:
ax=sns.boxplot(penguins_df[i])
plt.show()
penguins_clean=penguins_df[(penguins_df['flipper_length_mm']>0) & (penguins_df['flipper_length_mm']<1000)]
penguins_clean.describe()
df = pd.get_dummies(penguins_clean).drop('sex_.',axis=1)
scaler = StandardScaler()
X=scaler.fit_transform(df)
penguins_preprocessed=pd.DataFrame(data=X,columns=df.columns)
penguins_preprocessed