simple-keyword-clusterer 1.3

Extract higher level clusters from keywords

Simple Keyword Clusterer

A simple machine learning package to cluster keywords in higher-level groups.

Example:
"Senior Frontend Engineer" --> "Frontend Engineer"
"Junior Backend developer" --> "Backend developer"

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Installation

pip install simple_keyword_clusterer

Usage

# import the package
from simple_keyword_clusterer import Clusterer

# read your keywords in list
with open("../my_keywords.txt", "r") as f:
    data = f.read().splitlines()

# instantiate object
clusterer = Clusterer()

# apply clustering
df = clusterer.extract(data)

print(df)

Performance

The algorithm will find the optimal number of clusters automatically based on the best Silhouette Score.

You can specify the number of clusters yourself too

# instantiate object
clusterer = Clusterer(n_clusters=4)

# apply clustering
df = clusterer.extract(data)

For best performance, try to reduce the variance of data by providing the same semantic context
(the job title keywords file should remain coherent, in that it shouldn't contain other stuff like gardening keywords).

If items are clearly separable, the algorithm should still be able to provide a useable output.

Customization

You can customize the clustering mechanism through the files

• blacklist.txt
• to_normalize.txt

If you notice that the clustering identifies unwanted groups, you can blacklist certain words simply by appending them in the blacklist.txt file.

The to_normalize.txt file contains tuples that identify a transformation to apply to the keyword. For instance

("back end", "backend), ("front end", "frontend), ("sr", "Senior"), ("jr", "junior")

Simply add your tuples to use this functionality.

Dependencies

• Scikit-learn
• Pandas
• Matplotlib
• Seaborn
• Numpy
• NLTK
• Tqdm

Make sure to download NLTK English stopwords and punctuation with the command

nltk.download("stopwords")
nltk.download('punkt')

Contact

If you feel like contacting me, do so and send me a mail. You can find my contact information on my website.