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November 2025

Text Analytics & Classification at Scale

Hybrid text classification combining scikit-learn baselines with LLM-assisted labeling to categorize large volumes of free-text records.

  • NLP
  • scikit-learn
  • LLMs

tools: Python · scikit-learn · spaCy · LLM APIs · pandas

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The problem

Tens of thousands of free-text records (comments, descriptions, incident notes) needed consistent categorization to feed reporting. Manual tagging was inconsistent between people and never kept up with volume.

The approach

  • Started with a classical baseline: TF-IDF features + linear models in scikit-learn, giving a fast, cheap, interpretable classifier.
  • Used an LLM as a labeling assistant to bootstrap training data: the model proposed labels with confidence scores, humans only reviewed the uncertain ones.
  • Measured everything: per-class precision/recall, confusion matrices, and drift checks on new data before trusting predictions in production.
  • Packaged the pipeline so a scheduled job classifies new records nightly and writes results straight to the reporting layer.

The outcome

  • Consistent, auditable categories across the full historical dataset.
  • Labeling effort reduced to reviewing edge cases only.
  • Category-level trends became a standard slide in monthly business reviews.