Week 13: SVD and topic modeling

DATA 441/641 · Week 13

Notes

• 13.1 Math for Topic Modeling(slides)
• 13.2 SVD and Topic Modeling(slides)

Additional readings

• Practical NLP, Ch. 7 (topic modeling)
• sklearn: TruncatedSVD

Discussion

• What does a topic vector mean in LSA?
• Why can two documents share a topic even if they share few words?