Topic Modelling with N-grams

In topic modelling, bigrams offer several advantages over unigrams by providing better topic coherence and interpretability.

Limitations of Unigrams:

Traditional unigram models may miss the semantic relationships between frequently co-occurring words.

Benefits of Bigrams:
  • Improved Topic Coherence: Topics are more focused and easier to understand.
  • Domain-Specific Phrases: Bigrams capture domain-specific phrases, valuable for understanding specialised discussions.
  • Reduced Data Sparsity: Bigrams strike a balance between capturing relationships and avoiding data sparsity issues.

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