Information Retrieval WS 22/23, Lecture 09

Time stamps:
0:00 Introduction & Overview of the lecture
1:17 Experiences with ES8
5:05 Exam
6:16 Latent Semantic Indexing
23:56 Singular Value Decomposition (SVD)
52:29 Computing the SVD
53:54 Eigenvalue Decomposition (EVD)
1:13:45 Reduced form of EVD
1:22:35 From EVD to SVD
1:33:44 SVD in Python
1:37:15 Using LSI for better retrieval: Variant 1
1:39:25 Variant 2
1:44:47 Variant 3