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Free Problems
Python I/O and Data Pipeline Assessment - Part 1
20 questions focused on Python file and stream I/O, CSV basics, and filesystem utilities.
20 pts Medium 104 builtins.open file-io text-mode +7
Pandas Fundamentals Assessment - Part 1
This assessment evaluates your understanding of fundamental Pandas concepts for data analysis and manipulation. The problems are designed to test your proficiency with Series, DataFrames, data transformation techniques, and time series analysis. Each question challenges your ability to effectively use Pandas' core functionality.
46 pts Easy 92 pandas.series.dtype pandas.series missing data +7
PyTorch Fundamentals Assessment - Part 1
This assessment introduces fundamental PyTorch concepts, focusing on essential tensor operations and manipulations. The problems test your understanding of tensor creation, indexing, reshaping, and basic mathematical operations. Each question evaluates your ability to work with PyTorch's core data structures and perform foundational operations crucial for deep learning development.
20 pts Medium 101 torch CUDA GPU +7
NumPy Fundamentals Assessment - Part 4
This assessment evaluates your proficiency in advanced NumPy concepts, focusing on sophisticated data analysis and numerical computing techniques. The problems test your ability to implement complex mathematical algorithms, perform statistical operations, and optimize array-based computations. Each question challenges you to leverage NumPy's advanced features for solving intricate scientific computing problems efficiently.
55 pts Medium 90 nearest-value argmin absolute-difference +7
NumPy Fundamentals Assessment - Part 3
This assessment evaluates your understanding of intermediate NumPy concepts, focusing on array manipulations, mathematical operations, and data transformations. The problems test your ability to work with multi-dimensional arrays, perform complex mathematical computations, and implement efficient array processing solutions. Each question challenges your proficiency in applying NumPy's functionality to solve real-world computational problems.
54 pts Medium 99 reduce add-reduce sum-performance +7
NumPy Array Operations and Analysis
This assessment evaluates your proficiency with intermediate NumPy concepts, focusing on array operations, statistical functions, and data transformation techniques. You'll demonstrate your ability to manipulate arrays efficiently and implement common numerical computing patterns.
55 pts Medium 90 3d-indexing element-location array-shape +7
Premium Problems
Python I/O and Data Pipeline Assessment - Part 4
20 questions focused on PyTorch Dataset/DataLoader design: map/iterable datasets, transforms, custom collate/padding, worker seeding/sharding, num_workers/pin_memory/prefetch_factor, caching, memmap/shared memory, batching by size, profiling, and performance tuning.
10.00 60 pts Medium 98 torch.utils.data.dataset pytorch dataset +7
Chapter 02 - Numeric Python
This problem set covers key concepts from Chapter 2: Vectors, Matrices, and Multidimensional Arrays. The problems test understanding of NumPy array fundamentals, including array creation, indexing, slicing, operations, and vectorized computing. Each question is designed to reinforce the core concepts presented in the chapter.
5.00 26 pts Medium 97 numpy-arrays array-attributes shape +7
USAAIO 2025 R1P3 - Logistic Regression Implementation
This problem focuses on implementing logistic regression from scratch using the Titanic dataset. You will work through data pre-processing, mathematical derivations, and implement both gradient descent and Newton's method for logistic regression. The dataset contains passenger information from the Titanic, and your goal is to predict survival based on various features.
10.00 48 pts Easy 93 data-loading pandas data-exploration +7
USAAIO 2025 R1P2 - Basics of Neural Network - From Linear Regression to DNN Training
This problem is about the basics of neural network. Each part has its particular purpose to intentionally test you something. Do not attempt to find a shortcut to circumvent the rule. And all coding tasks shall run on CPUs, **not GPUs**.
10.00 36 pts Easy 96 learning-rate-scheduler pytorch optimization +12
USAAIO 2025 R1P1 - Fibonacci Matrix Form
Let us consider the following sequence: $$ F_n = F_{n-1} + F_{n-2},\ \forall\ n \ge 2. $$
8.00 27 pts Medium 96 fibonacci sequence linear algebra matrix form +7
IAIO 2024 Part 2 - Machine Learning Algorithms and Deep Learning
This problem covers the remaining categories of the 2024 International Artificial Intelligence Olympiad (IAIO), focusing on machine learning algorithms and deep learning. You'll work through practical implementations of k-means clustering, deep learning architectures, and advanced machine learning theory including kernel methods and the Perceptron algorithm. The problems cover: - K-means clustering algorithm implementation and convergence - Deep learning architectures (DALL-E, Transformers) - Perceptron algorithm and kernel methods - Mathematical proofs and theoretical analysis - Parameter counting and computational complexity
10.00 44 pts Hard 99 k-means clustering euclidean distance machine learning +7

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USA AI Olympiad

Explore competitive programming and AI contest preparation concepts

Grade 5 Math

Discover elementary mathematics concepts and learning paths

Featured PDFs

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Cover of System Design Interview: An Insider's Guide Volume 2
System Design Interview: An Insider's Guide Volume 2
116 questions 348 pts
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System Design Interview: An Insider's Guide
108 questions 317 pts
Cover of UNICALLI: A UNIFIED DIFFUSION FRAMEWORK FOR COLUMN-LEVEL GENERATION AND RECOGNITION OF CHINESE CALLIGRAPHY
UNICALLI: A UNIFIED DIFFUSION FRAMEWORK FOR COLUMN-LEVEL GENERATION AND RECOGNITION OF CHINESE CALLIGRAPHY
10 questions 38 pts
Cover of The Principles of Deep Learning Theory
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107 questions 418 pts

Featured Books

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Acing the System Design Interview
153 questions 456 pts
Cover of Numerical Python: Scientific Computing and Data Science Applications with Numpy, SciPy and Matplotlib
Numerical Python: Scientific Computing and Data Science Applications with Numpy, SciPy and Matplotlib
190 questions 543 pts
Cover of Hands-On Machine Learning with Scikit-Learn and PyTorch
Hands-On Machine Learning with Scikit-Learn and PyTorch
200 questions 554 pts
Cover of Deep Reinforcement Learning Hands-On - Third Edition
Deep Reinforcement Learning Hands-On - Third Edition
222 questions 720 pts

Featured Videos

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Cover of Flow-Matching vs Diffusion Models explained side by side
Flow-Matching vs Diffusion Models explained side by side
10 questions 29 pts
Cover of Attention in transformers, step-by-step | Deep Learning Chapter 6
Attention in transformers, step-by-step | Deep Learning Chapter 6
10 questions 30 pts
Cover of Knowledge Distillation: How LLMs train each other
Knowledge Distillation: How LLMs train each other
10 questions 27 pts
Cover of Diffusion Model
Diffusion Model
10 questions 32 pts