Mike Levy
Mike is a life-long learner who is passionate about mathematics, coding, and teaching. When he's not sitting at the keyboard, he can be found in his garden or at a natural hot spring.
87 articles
Mike Levy
Mike is a life-long learner who is passionate about mathematics, coding, and teaching. When he's not sitting at the keyboard, he can be found in his garden or at a natural hot spring.
87 articles
- Article
DataCamp vs Coursera: Which Is Worth It in 2026?
A full comparison of DataCamp vs Coursera covering courses, pricing, learning experience, career outcomes, and portfolio building for data learners.
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Best LLM Courses in 2026
Compare the top 10 LLM courses in 2026. Organized by goal, with honest reviews, real costs, and clear guidance on which course fits where you are now.
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Best Deep Learning Courses in 2026
Compare 10 of the best deep learning courses in 2026 by cost, time, framework, and what you'll build. Organized by goal, with honest reviews of every pick.
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Best Generative AI Courses in 2026
Compare 9 of the best generative AI courses for developers in 2026, ranked for engineers building LLM applications, RAG systems, and agents.
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Best AI Courses in 2026: From Using AI to Building It
Compare 10 of the best AI courses in 2026, organized by whether you want to use AI tools at work or build AI systems from scratch.
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Polars Tutorial: Faster DataFrame Analysis in Python
Learn Polars, the fast Python DataFrame library built on Apache Arrow. This hands-on tutorial covers reading data, filtering, groupby, and how Polars compares to pandas.
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What Is RAG? A Complete Guide
Learn how retrieval-augmented generation (RAG) gives LLMs access to external data, with a step-by-step walkthrough and a real worked example.
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How to Use a Lambda Function in Python
Learn how to use lambda functions in Python with practical examples. Covers filter, map, sorted, reduce, pandas, closures, and best practices for writing clean code.
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Understanding the Confusion Matrix in Machine Learning
Learn how to read a confusion matrix, calculate precision, recall, F1 score, and other key metrics, and understand why accuracy alone can mislead you.
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SQL Triggers: Syntax, Examples, and Use Cases
Learn what a SQL trigger is, how it works, and when to use one. Includes syntax, examples, types, use cases, and when to avoid triggers altogether.
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What We Learned Building a RAG System from Scratch (No Frameworks)
We built a RAG system from scratch in Python and documented every failure along the way. Real code, real outputs, and a 4-step checklist for debugging RAG.
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24 Codecademy Alternatives For 2026 — For Every Goal, Budget, and Learning Style
Compare Codecademy alternatives like Educative, Dataquest, and LeetCode for interview prep and coding practice.
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Best Machine Learning Certifications in 2026
Compare 11 machine learning certifications including Dataquest, Andrew Ng, AWS, Google Cloud, and Databricks. Find the right path.
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Best Business Analyst Certifications in 2026
Compare 12 business analyst certifications including CBAP, PMI-PBA, Power BI, and Tableau. Find the right credential for your career goals.
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DataCamp Alternatives: Compare The Best Platforms Side By Side
Looking for a DataCamp alternative? Compare Dataquest, 365 Data Science, Kaggle Learn, Coursera, and Codecademy by price, topics, and learning style.
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8 Best AI Bootcamps in 2026: Reviewed, Compared, and Ranked
Compare 8 of the best AI bootcamps in 2026, split into using AI at work vs. building AI systems. Pricing, format, pros and cons for each.
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Vector Database Practice Project: Building a Knowledge Base Search System
Build a portfolio-ready vector database project with real data, hybrid search, and evaluation. Practice chunking, embeddings, and filtering.
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Best Excel Certifications: Which One Matches Your Goals?
12 best Excel certifications compared. Find costs, recognition, and which path fits your career goals for data or finance roles.
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15 Best SQL Bootcamps in 2026: Reviews, Prices, and Comparisons
Compare the best SQL bootcamps, from SQL-only courses to data analytics, data engineering, and data science programs. See who each option is best for.
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DataCamp vs Udemy: Which Learning Platform Fits Your Goals?
DataCamp vs Udemy compared: learning approaches, pricing, and content focus. Find which platform matches your data science or programming goals.
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Best SQL Certifications in 2026 ― Cost, Prerequisites, and Impact
Compare SQL certifications by cost, time, and employer recognition. Discover when certifications advance your career—and when they don't.
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7 Best Data Engineering Bootcamps - Tools, Projects & Career Support
Explore the 7 best data engineering bootcamps, compared by curriculum, real-world projects, tools taught, pricing, and career support.
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13 Best Machine Learning Bootcamps in 2026
Looking for the best machine learning bootcamp? See how top programs compare on pricing, structure, curriculum quality, and outcomes.
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Semantic Caching and Memory Patterns for Vector Databases
Learn how semantic caching and conversation memory cut LLM costs, reduce latency, and support multi turn queries using vector databases.
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DataCamp vs Codecademy: Which Learning Platform Fits Your Goals?
DataCamp vs Codecademy compared: learning approaches, pricing, and content focus. Find which platform matches your data science or programming goals.
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23 Best Python Bootcamps in 2026 - Prices, Duration, Curriculum
Compare Discover the top 23 Python bootcamps in 2026 with prices, duration, and curriculum to find the right program for you
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13 Best Data Engineering Certifications in 2026
Compare 13 data engineering certifications by cost, time, and career goals. From AWS and GCP to Databricks and Kafka.
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Production Vector Databases
Learn how production vector databases handle real filtering workloads. Compare pgvector, Qdrant, and Pinecone with benchmarks and tradeoffs.
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12 Best Data Analytics Certifications in 2026
Compare the best data analytics certifications by cost, time, and goals. 12 options reviewed from beginner to expert level.
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Dataquest vs DataCamp: Which Data Science Platform Is Right for You?
Dataquest vs DataCamp compared: portfolio projects, learning approaches, and pricing. Find which data science platform matches your career goals.
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Metadata Filtering and Hybrid Search for Vector Databases
Learn metadata filtering and hybrid search for vector databases, compare BM25 with semantic search, and see when hybrid scoring adds value.
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Document Chunking Strategies for Vector Databases
Learn why chunking matters for long documents and compare fixed-token and sentence-based strategies to improve semantic search with ChromaDB.
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13 Best Data Analytics Bootcamps - Cost, Curriculum, and Reviews
Want to become a data analyst? Discover the top data analytics bootcamps of 2026, including costs, tools taught, timelines, and projects.
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10 Best Data Science Certifications in 2026
Compare 10 data science certifications that teach real skills. Find the one that fits your level and actually helps you get hired.
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Introduction to Vector Databases using ChromaDB
Learn when brute-force breaks, how vector databases speed up semantic search, and how to build fast queries with ChromaDB and ANN indexing.
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Best AI Certifications to Boost Your Career in 2026
Compare 13 AI certifications and learning paths by cost, time, and level. Find the right one for your career goals in 2026.
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18 Best Data Science Bootcamps in 2026 - Price, Curriculum, Reviews
Discover the 18 best data science bootcamps of 2026. Compare prices, curriculum, and reviews to find your perfect program.
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Measuring Similarity and Distance between Embeddings
Learn how to measure embedding similarity and build a semantic search engine that finds results by meaning, not just keywords.
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Generating Embeddings with APIs and Open Models
Explore embeddings for smarter AI search, see data projects from SQL to fintech apps, and learn how design shapes trust in charts.
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Understanding, Generating, and Visualizing Embeddings
Learn how embeddings capture meaning beyond keywords. Generate, visualize, and use them to power AI search, RAG, and agent memory.
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Python Projects for Beginners to Advanced: 100+ Ideas (2026)
Explore 100+ Python projects for beginners to advanced. Build real-world skills with hands-on ideas across apps, automation, data, and more.
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12 Data Analyst Skills That Will Get You Hired in 2026
Learn the 12 data analyst skills every company wants in 2026. Build confidence, boost your value, and make data-driven decisions that matter.
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Getting Started with Claude Code for Data Scientists
Streamline data science with Claude Code — an AI assistant that writes, refactors, and debugs your code so you can focus on real analysis.
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Using Spark SQL in PySpark for Distributed Data Analysis
Analyze large datasets with PySpark using SQL. Learn to register views, write queries, and combine DataFrames for flexible analytics.
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Working with DataFrames in PySpark
Learn how Spark DataFrames simplify structured data analysis in PySpark with schemas, transformations, aggregations, and visualizations.
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Working with RDDs in PySpark
Master PySpark's core RDD concepts using real-world population data. Learn transformations, actions, and DAGs for efficient data processing.
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PySpark Tutorial for Beginners - Install and Learn Apache Spark with Python
Learn how PySpark processes big data efficiently using distributed computing to overcome memory limits and scale your Python workflows.
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10 Data Science Jobs That Are in Demand
Look into your future of high-demand data science jobs. Learn what it takes to succeed in top data roles, including AI data scientist!
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The Evolution of AI in Data Science and What It Means for Your Career
See how AI data science is transforming careers. Learn how combining AI tools with core data skills creates valuable career opportunities.
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Practical Application of Prompt Engineering for Data Professionals
Apply prompt engineering to generate, categorize, and analyze realistic survey data, extracting structured insights for downstream analysis.
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Introduction to Prompt Engineering for Data Professionals
Learn prompt engineering for data professionals to improve accuracy, speed, and structure for your tasks using tools like ChatGPT and Claude.
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10 Command Line Skills You Need to Work with AI
Boost your AI career with essential command line skills. Learn to navigate, automate, and manage projects efficiently.
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Computer Vision in PyTorch (Part 2): Preparing Data, Training, and Evaluating Your CNN for Pneumonia Detection
Continue your computer vision project in PyTorch by preparing X-ray data, training your CNN, and evaluating model performance.
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Computer Vision in PyTorch (Part 1): Building Your First CNN for Pneumonia Detection
This beginner-friendly PyTorch tutorial covers CNN components, model architecture, and shape debugging with real-world medical data.
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Natural Language Processing (NLP) with PyTorch
Learn how to build a real-world natural language processing (NLP) pipeline in PyTorch to classify tweets as disaster-related or not.
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Sequence Models in PyTorch
This hands-on guide walks through building sequence models in PyTorch to predict cinema ticket sales and explains why order matters in data.
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What are GPT Models and How are They Used in AI Chatbots?
What are GPT models? Discover how GPT models power AI chatbots, enabling smarter, personalized conversations across industries.
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Why Learning to use AI Chatbots is Good for Your Career
This post highlights why understanding AI chatbots is key for your career in 2024, and gives you a quick overview of our AI Chatbots course.
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Getting Started with PyTorch for Deep Learning
Practice deep learning using PyTorch! Learn why it’s a top choice, understand neural networks, and build a simple model to predict salaries.
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13 Best Python Certifications in 2026
Compare 13 Python certifications by cost, time, and career path. From free options to PCAP and IBM. Find the right one for your goals.
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Essential Math for Data Science = Matrix Algebra
Discover essential math for data science with Python examples and key matrix algebra concepts to enhance your data projects.
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10 Great Business Analyst Projects for Your Portfolio
Discover the best business analyst projects with these 10 great portfolio projects. Build a standout portfolio that impresses employers.
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10 Exciting SQL Project Ideas for Beginners
Kickstart your data career with these 10 SQL projects for beginners—perfect for building real-world skills and an impressive portfolio!
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Power BI Certification – Is It Worth It and How Do You Get Certified?
In business analytics, Microsoft Power BI is the application of choice. But, do you need a Power BI certification to work in this field?
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10 Impressive Tableau Projects for Your Portfolio
Discover 10 Tableau projects for all skill levels. Enhance your data visualization abilities and create a standout portfolio today!
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8 Tableau Jobs That Are in Demand
Explore in-demand Tableau jobs and discover how to build a career in data. Find the perfect role to showcase your skills!
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10 ChatGPT Skills You Need to Learn
Elevate your career with top ChatGPT skills - from prompt engineering to API integration. Start learning today!
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Machine Learning Algorithms You Should Learn First
The machine learning algorithms you should learn first, when to use each one, and how they fit into supervised, unsupervised, and reinforcement learning.
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Data Scientist Job Description and Salary
Explore data scientist job descriptions for entry, mid, and senior-level roles, with responsibilities, required skills, and salary insights.
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How These Soft Skills in Data Science Transformed My Approach to Analysis
Develop soft skills in data science to better communicate insights, understand business needs, and solve real-world problems.
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How APIs and Web Scraping Transformed My Data Science Projects
Learn APIs and web scraping in Python to gather, combine, and analyze data for data science, including JSON handling and API interaction.
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What Is Power BI and Why Should You Learn It?
Microsoft Power BI is a powerful and versatile data visualization tool, and here's why every data professional should know how to use it.
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10 Power BI Projects from Beginner to Advanced
Discover 10 Power BI projects from beginner to advanced levels to enhance your data analysis skills and build an impressive portfolio.
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15 R Projects for Beginners (with Source Code)
Kickstart your data science journey with 15 R projects for beginners—source code included—to enhance your data science skills!
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21 Data Science Projects for Beginners (with Source Code)
Explore 21 data science projects for beginners with source code to build your data science portfolio and impress potential employers.
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What Is Scikit-learn and How Is It Used in AI?
Elevate your Python skills with scikit-learn for powerful, easy machine learning applications, and start simplifying complex tasks today!
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10 Git Skills You Still Need to Know for Version Control
Enhance your Git skills with our comprehensive Git guide—vital for mastering version control and collaboration.
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What is the Command Line and How Can it be Used for AI Projects?
Discover the power of the CLI in AI projects and learn why command line expertise is a game-changer for tech professionals.
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Introducing Dataquest’s AI Coding Assistant, Chandra
Discover the future of education with Dataquest's AI coding assistant, Chandra, a tool revolutionizing software development and learning.
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Essential Tools Every Python User Should Know
Learn vital Python tools through hands-on lessons and real-world scenarios. Dataquest takes you from basics to advanced tooling expertise.
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Google Colab for Deep Learning: A Step-by-Step Guide
Learn to set up Google Colab for deep learning, utilizing its free GPU for efficient model training, and collaborating effectively.
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Tutorial: Introduction to Deep Learning
In this tutorial, we introduce you to classic deep learning algorithms and their applications in various fields.
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Tutorial: Introduction to TensorFlow
This hands-on introduction to TensorFlow shows you how to build, train, and evaluate a neural network using TensorFlow and Keras.
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Python Ternary Operator: A Beginner's Guide
Learn Python’s ternary operator (conditional expression), how it works, when to use it, with practical examples for assignments, functions, loops.
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How to Use a Dictionary in Python (With Examples)
Learn what a Python dictionary is, how to use key-value pairs, and when to choose it over a list. Includes simple examples and common methods.
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Python Tuples: A Beginner’s Guide
Python tuples store ordered, immutable data. Learn how to create, access, and unpack tuples with real data science examples using Pandas and NumPy.
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Tutorial: Transforming Data with Python Scripts and the Command Line
Learn to create Python scripts for data analysis using the Command Line in this Python tutorial digging into Hacker News headlines.
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