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664 contest(s) 334,318 accounts(s)

Country distribution

N Country Participants
number
1
China 		12085

Most participation

N Handle Contest
number
1
lonnieqin 		126
2
qinhui1999 		123
3
dragonzhang 		105
4
a406161167 		93
5
hengzheng 		91
6
gmhost 		90
7
yangyanzhan 		87
8
algerwang 		83
9
leolu1998 		82
10
yuhaichina 		80
more

Most recent participation

N Handle Last
activity
1
act18l 		Feb. 1, 2025
2
wangyong101 		Feb. 1, 2025
3
regenyang 		Feb. 1, 2025
4
yunsuxiaozi 		Feb. 1, 2025
5
saddasdaasda 		Feb. 1, 2025
6
xuye 		Jan. 1, 2025
7
celibacochon 		Jan. 1, 2025
8
linjianhang 		Jan. 1, 2025
9
nianhua1 		Jan. 1, 2025
10
tztang 		Jan. 1, 2025
more

Past contests

End
Time
 Contest
Jan. 31, 2025 Forecasting Sticker Sales [beginner, time series analysis, tabular, mean absolute percentage error]
Jan. 31, 2025 Santa 2024 - The Perplexity Permutation Puzzle [optimization, holidays and cultural events, custom metric]
Jan. 15, 2025 Google - Unlock Global Communication with Gemma [languages, artificial intelligence, text generation]
Jan. 6, 2025 NFL Big Data Bowl 2025 [football, sports, exploratory data analysis]
Dec. 31, 2024 Regression with an Insurance Dataset [beginner, tabular, regression, insurance, rmsle]
Dec. 19, 2024 Child Mind Institute — Problematic Internet Use [health, time series analysis, multiclass classification, cohen kappa score]
Dec. 12, 2024 Eedi - Mining Misconceptions in Mathematics [education, nlp, primary and secondary schools, map@{k}]
Dec. 2, 2024 UM - Game-Playing Strength of MCTS Variants [games, board games, artificial intelligence, regression, mean squared error]
Dec. 1, 2024 Google - Gemini Long Context [nlp, text generation, video generation, video text]
Nov. 30, 2024 Exploring Mental Health Data [beginner, time series analysis, tabular, accuracy score]
more

Running contests

Time
Left
 Contest
36 hours CZII - CryoET Object Identification [biology, image, object detection, custom metric]
8 days FIDE & Google Efficient Chess AI Challenge [board games, reinforcement learning, simulations, custom metric]
25 days Backpack Prediction Challenge [beginner, tabular, mean squared error]
29 days LLMs - You Can't Please Them All [statistical analysis, text generation, custom metric]
30 days CIBMTR - Equity in post-HCT Survival Predictions [healthcare, survey analysis, custom metric]
35 days WSDM Cup - Multilingual Chatbot Arena [languages, text conversation, accuracy score]
35 days NeurIPS 2024 - Lux AI Season 3 [games, artificial intelligence, reinforcement learning, custom metric]
37 days Konwinski Prize [computer science, custom metric]
57 days AI Mathematical Olympiad - Progress Prize 2 [nlp, mathematics, accuracy score]
159 days Jane Street Real-Time Market Data Forecasting [finance, tabular, regression, custom metric]