image compression dimension reduction feature extraction ...temporal segmentation: like hidden...
Post on 01-Aug-2020
14 Views
Preview:
TRANSCRIPT
Matrix Factorization (MF)� Image Compression� Dimension Reduction� Feature Extraction (clustering)
X= + noise
m
n r
m
r
n
Memory: mn Memory: (m+n)r
P: Pattern Matrix C: Coefficient MatrixD: Data Matrix
Image Compression
Pansy Flower image, collected fromhttp://www.ats.ucla.edu/stat/r/code/pansy.jpg
This image is 600×465 pixels
Low Rank Reconstruction
Rank-1 approximation Rank-5 approximation
Low Rank Reconstruction
Rank-50 approximation Rank-100 approximation Original image
Drosophila Image Analysis
NMF vs. MF
Matrix Completion
Customers
0 2 ? 0 3 ?
1 ? 1 0 ? 1
? 3 4 ? ? 2
1 1 ? 1 ? 6
? ? 1 1 0 1
2 2 ? ? ? ?
Item
s (W
ines
)
Quantity /
Rating
top related