Bonus
When discussing this phenomenon, the textbook Model Selection and Model Averaging rhetorically asks “Is the monkey who typed Hamlet actually a good writer?” For 10 points each:
[10m] Name this phenomenon in machine learning that can be prevented using k-fold cross-validation and regularization.
ANSWER: overfitting [or overtraining]
[10h] This technique can prevent overfitting in neural networks by introducing a layer that randomly “shuts off” some incoming units by setting their weights to zero.
ANSWER: dropout [prompt on dilution]
[10e] The patent for dropout is owned by this company that maintains the TensorFlow library. In 2024, this company introduced “AI overview” to supplement its PageRank algorithm.
ANSWER: Google [accept Alphabet]
<Oxford B, Other Science>
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 1 | 28 | 18.93 | 96% | 64% | 29% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Alabama A | Tennessee A | 0 | 0 | 10 | 10 | E |
| Alberta | UW A | 10 | 0 | 10 | 20 | ME |
| Bristol | Cambridge B | 10 | 10 | 10 | 30 | MHE |
| Bruin A | Georgia Tech D | 0 | 0 | 10 | 10 | E |
| Cambridge D | Imperial B | 10 | 10 | 10 | 30 | MHE |
| Chicago C | WashU B | 10 | 10 | 10 | 30 | MHE |
| Georgetown A | Notre Dame C | 0 | 0 | 10 | 10 | E |
| Illinois A | Illinois C | 10 | 0 | 10 | 20 | ME |
| Illinois B | Chicago A | 10 | 0 | 10 | 20 | ME |
| Indiana A | Missouri S&T | 10 | 0 | 10 | 20 | ME |
| Iowa | Georgetown B | 0 | 0 | 0 | 0 | |
| Louisville A | Georgia Tech B | 0 | 0 | 10 | 10 | E |
| Missouri | Indiana B | 0 | 0 | 10 | 10 | E |
| Northwestern A | Northwestern B | 10 | 0 | 10 | 20 | ME |
| Oxford A | LSE | 10 | 10 | 10 | 30 | MHE |
| Oxford C | Sheffield | 0 | 0 | 10 | 10 | E |
| Purdue | Notre Dame A | 10 | 0 | 10 | 20 | ME |
| Southampton A | Warwick B | 10 | 0 | 10 | 20 | ME |
| Stanford B | Notre Dame B | 10 | 10 | 10 | 30 | MHE |
| TAMU | Texas B | 0 | 0 | 10 | 10 | E |
| Texas A | ASU | 10 | 10 | 10 | 30 | MHE |
| UBC | UW B | 10 | 0 | 10 | 20 | ME |
| UC Berkeley A | Claremont B | 10 | 10 | 10 | 30 | MHE |
| UC Berkeley B | UCSD | 10 | 0 | 10 | 20 | ME |
| UCF B | Florida A | 10 | 10 | 10 | 30 | MHE |
| UCF C | Valencia A | 0 | 0 | 10 | 10 | E |
| UCLA | Claremont A | 10 | 0 | 10 | 20 | ME |
| WashU A | Chicago B | 0 | 0 | 10 | 10 | E |
Summary
| Tournament | Edition | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|
| California | 2025-02-01 | 3 | 23.33 | 100% | 100% | 33% |
| Florida | 2025-02-01 | 2 | 20.00 | 100% | 50% | 50% |
| Midwest | 2025-02-01 | 6 | 18.33 | 100% | 67% | 17% |
| Overflow | 2025-02-01 | 5 | 16.00 | 80% | 60% | 20% |
| Pacific Northwest | 2025-02-01 | 2 | 20.00 | 100% | 100% | 0% |
| South Central | 2025-02-01 | 2 | 20.00 | 100% | 50% | 50% |
| Southeast | 2025-02-01 | 3 | 10.00 | 100% | 0% | 0% |
| UK | 2025-02-01 | 5 | 24.00 | 100% | 80% | 60% |