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Back to week 5 page: Link
Lecture 16 Pre-recorded Annotated (from 2020, please use with caution): Link
Link
Reconstruction Examples:
Images by wellecks
x:
y:
z:
(2) Direction 2:
x:
y:
z:
(3) Direction 3:
x:
y:
z:
(2) Eigenvalues:
(3) Eigenvectors:
Back to week 5 page: Link
# Lecture 16 Examples
📗 My handwriting is really bad, you should copy down your notes from the lecture videos instead of using these.
Lecture 16 Zoom Annotated (2021): Link Lecture 16 Pre-recorded Annotated (from 2020, please use with caution): Link
# Q16 Quiz Instruction
📗 The quizzes must be completed during the lectures. Alternative ways to get the points are listed under "Grading Scheme" on the index page. No Canvas submissions are required. The grades will be updated at the end of the week on Canvas.
# Game Results
📗 All-pay auction game results:
Write down a number x between 0 and 0.5, you lose x points from the quiz; if your number is the largest, you get 0.5 bonus points. | Number | Count | Net gain |
| 0.00 | 55 | 0.00 |
| 0.01 | 1 | -0.01 |
| 0.03 | 1 | -0.03 |
| 0.5 | 5 | 0.00 |
# Eigenfaces
Eigenfaces:
Link
Reconstruction Examples:
| K | 1 | 20 | 40 | 50 | 80 |
| Face 1 | 
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| Face 2 | 
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Images by wellecks
# Principal Component Demo
📗 Check variances:
(1) Direction 1: x:
y:
z:
(2) Direction 2:
x:
y:
z:
(3) Direction 3:
x:
y:
z:
📗 Solutions:
(1) Variance matrix: (2) Eigenvalues:
(3) Eigenvectors:
Last Updated: November 03, 2025 at 1:01 PM