1.  Grouper: A Dynamic Clustering Interface to Web Search Results Fatih Çalı ş ır Tolga Çekiç Elif Dal Acar Erdinç 07.03.2013 1/9

2. Introduction  Ranked List vs. Clustering  Pre-retrieval Clustering vs. Post-retrieval Clustering 2/9

3. Methodology  STC (Suffix Tree Clustering)  Interface  Cluster Representation 3/9

4. STC  Three steps:  Document cleaning  Identifying base clusters using a suffix tree  Merging base clusters 4/9

5. STC  Characteristics of STC:  Incremental  Overlapping  Unspecified number of clusters  Clustering based on phrases  Robust to noise 5/9

6. Interface 6/9

7. Interface 7/9

8. Cluster Representation  Selecting the phrases for clustering representation:  Word Overlapping  Sub- and Super-Strings  Most-general phrase with low coverage 8/9

9. Thanks for Listening 9/9