1. Web Search Results Clustering
   • Main issues
   • Clustering algorithms
2. Traditional clustering algorithms
3. Suffix Tree Clustering (STC)
   • Steps
   • Advantages

1. Feature Extraction
2. Feature Selection
   • Filter
   • Wrapper

1. Top down
   • Hierachical K-means
2. Bottom up
   • Agglomerative clustering
3. Distance Metrics
   • Single links
   • Complete links
   • Average links
   • Centroids

Text Representation

1. Bag of words
2. N-grams