Fourth Industrial Revolution

Summary : Ordinary Python developers use Matplotlib only at a surface level. This article reveals five core Matplotlib concepts that explain how plots really work and how to gain control over customization, performance, and reliability. Introduction: Matplotlib Is More Than Just plt.plot() For many Python users, Matplotlib is one of the very first data visualization libraries they come across. It often gets learned by copying code snippets from tutorials or Stack Overflow and tweaking them until the plot looks right. First, view my Matplotlib tutorial below. Then, read on. While this approach works for simple charts, it treats Matplotlib like a black box. You run commands, a plot appears, and you move on. What gets missed is the carefully designed architecture underneath that gives Matplotlib its flexibility and power. Understanding that architecture is what separates a casual script writer from someone extraordinary, who can build complex, reliable, and reusable vis...

Summary : Pandas has evolved significantly in recent versions, bringing major improvements in performance, safety, and usability. This blog post highlights important upgrades that can help you write faster, cleaner, and more reliable data analysis code. Introduction: Pandas Is Evolving Fast For more than a decade, Pandas has been the go-to library for data manipulation in Python. Most of us have built strong habits around DataFrames, along with workarounds for a few long-standing quirks. If you are new to Pandas, view the Pandas Tutorial video below. Learn Pandas using the Pandas Playbook (datasets and Python code designed for data analysts and ML engineers, from Beginner to Intermediate, to master essential Pandas operations). What many developers do not realize is that some of those old frustrations are now being actively removed. With version 2.0 and beyond, Pandas has introduced deeper architectural improvements that change how it handles memory, performance, a...

In this post, I explain Confusion Matrix in detail. Learn Confusion Matrix Definition and Intuition, Claim Approval Example, Confusion Matrix Table Layout, Core Concepts Explained (TP, TN, FP, FN), Confusion Matrix Formulae, Derived Metrics from the Confusion Matrix (Precision, Recall, F1, Specificity), and Visualization and Code. If you want to additionally learn about the following confusion matrix topics or comment, you can do so on my original Confusion Matrix article on LinkedIn here . Thresholding, ROC and PR Curves, Imbalanced Data and the Accuracy Paradox, Multiclass and Multi-Label Confusion Matrices (Visualization and Interpretation), Cost-Sensitive Decisions: Cost Matrix, Business Tradeoffs, and Setting Operational Thresholds, Calibration, Confidence, and When to Trust Model Probabilities, Practical Tips and Troubleshooting (Data leakage, label noise, sampling effects) — confusion matrix tutorial, debugging checklist for AI Developers and AI QA Testers, Ethics, Fairness an...

In this post, I explain LLMs in Python, Python Setup & Installation, Inference with Transformers, Calling ChatGPT API in Python, Python Local Deployment with Hugging Face Models, Prompt Engineering in Python and FineTuning & Custom Training (including LoRA). You can test your knowledge of LLMs in Python by attempting the Quiz after every set of Questions and Answers. If you want my complete Introduction to LLMs in Python document that additionally includes the following important topics, you can message me on LinkedIn : Python Advanced Techniques (Streaming, Batching & Callbacks), Python Efficiency & #Optimization (quantization, distillation, and parameter‑efficient tuning), Integration & Deployment Workflows, LLMs in Python Best Practices & Troubleshooting, and consolidated Introduction to LLMs in Python Quiz (with answer explanations to reinforce learning). Question : What do I mean by "Introduction to LLMs in Python"? Answer : Introduction to LL...