Data Science Tutorials

Learn what an invertible matrix is, how to determine if a matrix is invertible, and why matrix inverses matter in linear algebra and data science.

No, it didn't solve the Riemann hypothesis. But it did stumble into a genuine, Lean-verified improvement on a 50-year-old bound.

Build and deploy a live financial research app on FastAPI Cloud using GPT-5.6 Luna, Olostep web search, tool calling, REST endpoints, and OpenAI Agents SDK tracing. 

Learn how to run fast, accurate, multilingual speech-to-text locally on a CPU using Microsoft VibeASR.cpp, with file transcription, real-time streaming, and a Gradio web interface on Windows, Linux, and macOS.

Learn how to use Grok Voice Think Fast 2.0 to build a real-time voice agent that handles spoken conversations, calls tools, manages interruptions, and resumes disconnected sessions.

This tutorial introduces Oracle AI Vector Search, explains its core features, and walks through a practical local project. It also covers setup requirements, semantic search, vector indexing, and common troubleshooting steps.

Learn how to create a heat map in Excel using Conditional Formatting, customize color scales, and visualize patterns in your data.

Learn how to use OpenAI’s gpt-live-transcribe API to stream microphone audio, generate multilingual live captions, improve domain-specific accuracy, and balance latency against transcription quality.

Learn to build a document QA system in Python with PageIndex, then benchmark on a real Federal Reserve financial report it against a vector RAG baseline using FAISS.

Run the latest DeepSeek V4 Flash model on a multi-GPU setup with Unsloth Studio, connect it to OpenCode, and use a local AI coding agent to build an interactive stock analytics website.

Learn how Claude Code sub-agents can explore codebases, plan implementations, and complete multi-step development tasks with minimal supervision.

Learn how to use pandas.melt() to reshape DataFrames from wide to long format, with practical examples and common use cases.