The Winnow algorithm is used for this task, models for which are often tested using the Iris dataset. This task is the alphabetically first of the two most common applications of data structures constructed by the C4.5 and ID3 algorithms. One model for this task may seek to minimize the hinge loss on linear data or utilize the kernel trick on nonlinear data; that model determines the maximum hard or soft margin using (*) support vectors. Due to their namesake convergence theorem, perceptron models are guaranteed to locate separating hyperplanes in this task for linearly separable datasets. Generative models for this task include naive Bayes, in contrast with discriminative models like logistic regression that are used for its binary form. Spam filtering is a classic example of, for 10 points, what task in machine learning that seeks to categorize data? ■END■
| 2025 PLAYTIME Online | 04/26/2025 | Y | 9 | 89% | 44% | 33% | 75.50 |
| 2024 PLAYTIME @ Harvard | 04/26/2025 | Y | 4 | 50% | 25% | 25% | 67.50 |
| 2024 PLAYTIME @ Virginia Tech | 07/11/2025 | Y | 3 | 33% | 0% | 100% | 139.00 |
| 2024 PLAYTIME @ UBC | 10/05/2024 | Y | 8 | 50% | 13% | 63% | 100.50 |
| 2024 PLAYTIME @ WashU | 10/12/2024 | Y | 3 | 33% | 0% | 67% | 118.00 |
| 2024 PLAYTIME @ JHU | 10/26/2024 | Y | 7 | 43% | 29% | 14% | 58.00 |
| 2025 PLAYTIME @ Northwest | 12/10/2024 | Y | 4 | 50% | 0% | 25% | 102.00 |
| 2025 PLAYTIME @ Claremont | 12/10/2024 | Y | 5 | 80% | 40% | 40% | 89.25 |
| 2025 PLAYTIME @ Florida | 12/10/2024 | Y | 3 | 67% | 33% | 67% | 62.50 |
| 2025 PLAYTIME @ CWRU | 12/10/2024 | Y | 4 | 50% | 25% | 25% | 56.50 |
| 2025 PLAYTIME @ Sheffield | 12/10/2024 | Y | 5 | 100% | 0% | 40% | 108.60 |
| Player | Team | Opponent | Buzz Position | Value |
|---|---|---|---|---|
| Cade Reinberger | RIT | Belmont | 17 | 15 |
| Kevin Jiang | 4 quizbowl pros go Virginia on North Carolina | Even in Blacksburg There I Am | 17 | -5 |
| Ryan Rosenberg | Adrianne Lenker 4 Nobel Lit Prize 2K65 | Master and Margaritaville | 17 | -5 |
| Thomas Tibbetts | Too much from you lately | Qin Shi Huang's Immortality Poison | 19 | 15 |
| Sky Li | Toronto C | Ottawa A | 19 | -5 |
| Alex Li | Free Agents 1 | Illinois Orange | 21 | 15 |
| Benjamin Chapman | Toronto B | Toronto D | 21 | -5 |
| Aneesh Shotriya | Gruh | MSJ | 27 | 15 |
| Kevin | Simon Fraser | Mac A | 28 | -5 |
| Matthew Faberman | Pittsburgh | Michigan B | 32 | 15 |
| Arjun Bothra | Haverford A | George Mason C | 36 | 15 |
| Kethan Raman | UCLA A | girl 15 whale i mean they | 54 | -5 |
| Eric Mukherjee | Mike Dukakis Tank Battalion | mongeese | 54 | 15 |
| Eshan Pant | NYU A | Johns Hopkins A | 55 | -5 |
| Braden Booth | Missouri | WashU Bulbasaur | 58 | -5 |
| Steven Yuan | Trip-Hop Quizzer Tricky | Quatumvirate | 59 | 15 |
| Liam Kusalik | Waterloo A | UBC | 60 | 15 |
| Andrew Gao | Four Generalists in Search of a Power | 2 Italians, 2 Poles, All Noles | 62 | -5 |
| Leo Law | Project2025BC: Make Assyria Great Again | Billy's Bastion | 62 | -5 |
| Will McCurley | Auburn 2026 | Mahjonng Masters | 62 | -5 |
| Caleb Ott | Waterloo B | Toronto E | 62 | -5 |
| Vikshar Athreya | Rutgers | Maryland B | 64 | 15 |
| Parikshit Chauhan | P.C.‚ Daniel‚ Michel‚ and Jason B | UCSB | 65 | 15 |
| Anderson Wang | Art of Premature Signaling | Claremont B | 67 | 15 |
| Andrew Nucci | UCLA B | Claremont A | 71 | -5 |
| Rayton Lin | Waterloo C | Toronto Metropolitan | 72 | -5 |
| Vinayak Singh Bhadoriya | NYU B | Johns Hopkins B | 74 | 10 |
| Daniel Hothem | Monsieur Hulot's Academic Team | Notre Dame + Epic Games | 74 | 10 |
| Arijit Gupta | Sheffield C | Imperial B | 74 | 10 |
| Paphon Susikakosol | Imperial A | Lancaster | 78 | 10 |
| Roxanne Tang | Ohio State A | Oberlin | 81 | 10 |
| Tracy Mirkin | Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses | Keeping Up With the Cardassians | 84 | -5 |
| Skand Parvatikar | Arizona State University A | UW A | 86 | 10 |
| Swapnil Garg | Egypt Airlines Haters | we need new names | 91 | 10 |
| Conor Thompson | Iowa State | Chicago B | 91 | -5 |
| Kunaal Chandrashekar | Toronto A | Guelph | 95 | 10 |
| Kevin Zheng | Michigan A | Michigan D | 103 | -5 |
| Gary Lin | UCSD | Caltech | 105 | 10 |
| Bill Zhao | Keeping Up With the Cardassians | Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses | 106 | 10 |
| Asha Basu | McGill A | McGill B | 108 | 10 |
| Kai Madgwick | Manchester | Edinburgh | 114 | 10 |
| Anne Fjeld | Alberta | Washington Connections | 118 | -5 |
| Taman Truong | Arizona State University B | UW B | 118 | 10 |
| Sam Matson | Ashurbanipal’s Drag Race | Somehow Paula Deen Returned | 118 | -5 |
| Liam Starnes | Chicago A | WashU Charmander | 118 | 10 |
| Alvan Hossein | Lexington | Harvard | 118 | -5 |
| Ragulan Sivakumar | MIT | BU | 118 | 10 |
| Brendan Bethlehem | Cambridge | Warwick A | 118 | -5 |
| Akshay Seetharam | Claremont A | UCLA B | 120 | 10 |
| Hazel DePreist-Sullivan | evil women enjoyers | Goober Gang | 125 | -5 |
| Jolie Yeh | Warwick B | Sheffield B | 125 | -5 |
| Seth Kendall | Billy's Bastion | Project2025BC: Make Assyria Great Again | 138 | 0 |
| Adam Bentley | Sheffield B | Warwick B | 138 | 10 |
| Jacob Goodson | Ohio State B | Ohio State D | 139 | 0 |
| Joe O'Connor | George Mason B | George Washington | 139 | 0 |
| Lowrie Woodside | George Washington | George Mason B | 139 | 0 |
| Dillon George | Catholic University of America | Haverford B | 139 | 0 |
| Maximilian Niebur | Johns Hopkins A | NYU A | 139 | 0 |
| Chansol Park | NYU C | George Mason A | 139 | 0 |
| Humzah Shaikh | George Mason A | NYU C | 139 | 0 |
| Padraig Finan | Washington Connections | Alberta | 139 | 0 |
| John Hines-Shah | Carleton | SD Mines | 139 | 0 |
| Robert Szot | 2 Italians, 2 Poles, All Noles | Four Generalists in Search of a Power | 139 | 10 |
| Jack van Nostrand | Toronto Metropolitan | Waterloo C | 139 | 0 |
| Subhamitra Banerjee Roychoudhury | Somehow Paula Deen Returned | Ashurbanipal’s Drag Race | 139 | 0 |
| Neil Murphy | WashU Bulbasaur | Missouri | 139 | 0 |
| Mason Yu | Brown | Brandeis | 139 | 0 |
| Chris Dech | Brandeis | Brown | 139 | 0 |
| James McCurley | Harvard | Lexington | 139 | 0 |
| Jonathan Shauf | Even in Blacksburg There I Am | 4 quizbowl pros go Virginia on North Carolina | 139 | 10 |
| Peter Ballas | Michigan D | Michigan A | 139 | 0 |
| Nathan Liang | Mahjonng Masters | Auburn 2026 | 139 | 10 |
| TJ Pickering | Goober Gang | evil women enjoyers | 139 | 0 |
| Chris Levesley | Warwick A | Cambridge | 139 | 10 |
| Yusuf | Mac A | Simon Fraser | 139 | 0 |
| Amir Dolansky | Toronto D | Toronto B | 139 | 10 |
| Jesse Chusing | Ottawa A | Toronto C | 139 | 0 |
| Athan Juritsch | Toronto E | Waterloo B | 140 | 0 |