CS5720 - Week 11
Slide 202 of 220

Text Preprocessing Fundamentals

Why Preprocess Text?

🧹 Remove Noise
Clean text by removing irrelevant characters, formatting, and artifacts
📏 Standardize Format
Ensure consistent capitalization, spacing, and text structure
📊 Reduce Complexity
Simplify vocabulary and focus on meaningful content
🎯 Improve Performance
Enable better model training and more accurate results

Common Preprocessing Steps

  • 1️⃣
    Lowercasing
    Convert all text to lowercase
  • 2️⃣
    Remove Punctuation
    Strip punctuation marks and symbols
  • 3️⃣
    Remove Stop Words
    Filter out common, low-value words
  • 4️⃣
    Stemming/Lemmatization
    Reduce words to root forms

Interactive Preprocessing Demo

Original Text
Ready to process...
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Prepared by Dr. Gorkem Kar