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"Cogito, ergo sum" (I think, therefore I am)

β€” RenΓ© Descartes

RenΓ© Descartes
Free Problems
Microsoft's GraphRAG Implementation
This problem set covers Microsoft's GraphRAG implementation from Chapter 7, focusing on knowledge graph construction, entity extraction, relationship summarization, community detection, and retrieval strategies. Test your understanding of the key concepts and practical implementations discussed in the chapter.
44 pts Medium 100 rag graph-based retrieval microsoft ai +7
Chapter 06 - Constructing Knowledge Graphs with LLMs
This problem set covers key concepts from Chapter 6 on constructing knowledge graphs using LLMs. You'll explore structured data extraction, limitations of text embeddings, entity resolution, and practical implementation of knowledge graph construction from unstructured text documents. The problems progress from basic conceptual understanding to advanced practical applications.
29 pts Medium 95 legal document retrieval text embeddings knowledge graphs +7
Chapter 05 - Agentic RAG Systems
This problem set covers the key concepts from Chapter 05 on Agentic RAG (Retrieval-Augmented Generation) systems. You'll be tested on the foundational components of agentic RAG, including retriever agents, retriever routers, and answer critics, as well as practical implementation details and the rationale behind using agentic approaches in RAG systems. The problems progress from basic conceptual understanding to advanced analytical thinking about system design and implementation.
27 pts Medium 97 agentic rag systems rag architecture foundational components +7
Generating Cypher Queries from Natural Language Questions
This problem set covers Chapter 4: "Generating Cypher queries from natural language questions" from the O'Reilly Learning book "Essential GraphRAG". The problems test your understanding of text2cypher generation, including workflow components, schema inference, prompt engineering, and implementation practices for converting natural language questions into executable Cypher queries for graph databases.
28 pts Medium 95 natural language processing cypher queries knowledge graphs +7
Advanced Vector Retrieval Strategies
This problem set covers advanced vector retrieval strategies from Chapter 3 of the Essential GraphRAG book. You'll explore query rewriting techniques like step-back prompting, advanced embedding strategies including parent document retrieval, and complete RAG pipeline implementation. These problems test your understanding of how to improve retrieval accuracy and recall in RAG applications through sophisticated vector search techniques.
42 pts Medium 93 vector retrieval prompt engineering query rewriting +7
Chapter 13 - Human-Agent Collaboration
This problem set covers key concepts from Chapter 13 on Human-Agent Collaboration, focusing on how agentic systems integrate into workflows, the evolving roles of humans, scaling collaboration, and trust/governance frameworks. These problems test your understanding of designing effective human-agent partnerships across different organizational scopes and autonomy levels.
30 pts Medium 100 human-agent collaboration autonomy trust in systems +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

Knowledge Graphs

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
Cover of System Design Interview: An Insider's Guide
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
The Principles of Deep Learning Theory
107 questions 418 pts

Featured Books

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Cover of Acing the System Design Interview
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