NumPy Cheat Sheet for Data Cleaning and Preprocessing

#PrincipalComponentAnalysis (PCA) is more than just a technique for dimensionality reduction - it’s one of the most powerful applications of eigenanalysis in data science. By identifying the directions of maximum variance, PCA simplifies complex datasets while preserving their essential structure. What’s inside this guide: * The math: Covariance matrices and Eigen-decomposition.  * The logic: From data centering to explained variance.  * The code: Python realizations using NumPy and scikit-learn. Swipe through the carousel below to explore the mechanics of PCA! The link to the full #Medium article with complete code is in the first comment. #DataScience #MachineLearning #Python #LinearAlgebra #AI #STEM

Python Basics for Machine Learning I’ve uploaded a video covering the core Python data structures used in machine learning: • Lists • Tuples • Sets • Dictionaries These concepts are essential for handling data and writing efficient ML code. This video is part of my Advanced Machine Learning with LLM series, focused on building strong foundations before moving into complex topics. https://lnkd.in/gSg6rBKM #Python #MachineLearning #DataStructures #LLM #AI #Learning

🚀 Machine Learning Journey (Prime 2.0) : Day-2 Continuing my Python learning journey, today I focused on control flow and problem-solving concepts that are essential for building logic in Machine Learning 🧠💻 I covered: • Conditional statements (if-else, nesting, and match-case) • Solving problems like checking odd/even numbers • Loops in Python (while & for loops) • Practicing loop-based problems like multiplication table and sum of N numbers • Understanding break and continue statements • Using the range() function effectively • Solving string-based problems like vowel count • Introduction to functions in Python One interesting insight from today: Loops and conditionals are the core of logical thinking in programming—most real-world ML problems rely heavily on these fundamentals. This session helped me improve my problem-solving approach using Python. Still need more practice to write optimized logic, but the basics are getting stronger 📈 Excited to move closer to actual Machine Learning concepts soon 🚀 #MachineLearning #Python #AI #DataScience #LearningInPublic #DeveloperJourney #ApnaCollege #MLJourney #prime2.0

Turning Raw Attendance Data into Meaningful Insights! In this video, I walk through how I transformed and filtered a student attendance dataset using Python and machine learning techniques. What I’ve done: > Cleaned & filtered data using Pandas & NumPy > Applied unsupervised learning concepts > Converted data into binary format for better processing > Created a visual graph using Matplotlib This project highlights how raw data can be structured, analyzed, and visualized to uncover useful patterns. I’m currently exploring more in Data Analytics & Machine Learning—excited to keep learning and building! #DataAnalytics #Python #MachineLearning #DataScience #Pandas #NumPy #Matplotlib #LearningJourney #UnsupervisedLearning

🚀 Learning Update: Python (Week Progress) Continuing my Python journey as part of my path toward AI, Machine Learning, and Data Science. This week, I focused on understanding some important concepts: • Lambda Functions • Nested Functions • Class Methods (like str, len) • Basics of Polymorphism (Function Overloading concept) --- 💡 What made the difference this time: Instead of just learning theory, I focused on small practical implementations. For example: → Using lambda for quick one-line operations → Understanding how nested functions control scope → Customizing class behavior using built-in methods → Exploring how polymorphism changes function behavior --- 🧠 The key realization: Concepts make more sense when applied — even in small examples. --- 🔥 Step by step, building the foundation. More practical learning updates coming soon. --- 💬 What concept helped you understand Python better? comment ✍️ #Python #LearningJourney #AI #MachineLearning #DataScience #Programming #BuildInPublic #DeveloperJourney #TechLearning #Consistency

Exploring the power of Python in Data Science. Understanding how data can be cleaned, analyzed, and visualized effectively. Working with tools like NumPy, Pandas, and Matplotlib. Focusing on building strong fundamentals step by step. Learning how to turn raw data into meaningful insights. Consistency and practice are driving the progress. Excited for what’s ahead in this journey. #Python #DataScience #DataAnalytics #MachineLearning #LearningJourney #TechSkills #AI

🔗 GitHub Repository: [https://lnkd.in/gXa9zEBs] Strengthening Machine Learning concepts with Logistic Regression Covered practical implementation of: ✔ Binary Classification (Single & Multiple Inputs) ✔ Polynomial Logistic Regression ✔ Multiclass Classification (OVR & Multinomial) ✔ Decision Boundaries & Model Evaluation using Python and scikit-learn Understanding how logistic regression predicts probabilities and solves classification problems gives deeper insight into real-world ML applications. From theory to implementation, every project adds more clarity and confidence to the learning journey. #MachineLearning #LogisticRegression #Python #DataScience #ScikitLearn #GitHub

Day 2 of learning Machine Learning. Today I worked on a simple linear regression model using Python in Jupyter Notebook. The idea was straightforward: - Input (x): house size - Output (y): price Model used: f(x) = wx + b I understood how: - Training data is structured (x_train, y_train) - Parameters (w, b) define the relationship - The model uses this to make predictions on new inputs Also got hands-on with NumPy and basic plotting using Matplotlib. Still very early, but it's becoming clearer how data is converted into predictions. #MachineLearning #AI #Python #LearningInPublic

🚀 #30DaysOfLearning – Day 2 Today, I explored one of the most important foundations in Machine Learning — Data Types and Variables in Python 🐍 At first, they may seem basic, but they are the building blocks of everything in programming and AI. Here’s what I learned: 🔹 Variables are used to store data Example: name = "Nasiff" age = 26 🔹 Common Data Types in Python: String (str) → Text (e.g., "Hello World") Integer (int) → Whole numbers (e.g., 10) Float (float) → Decimal numbers (e.g., 3.14) Boolean (bool) → True or False 🔹 Python automatically detects the data type — no need to declare it manually (which makes it beginner-friendly!) 💡 One key takeaway: Understanding data types helps prevent errors and makes your code more efficient and readable. 📌 Small progress is still progress. Consistency is the goal! #M4aceLearningChallenge #MachineLearning #Python #AI #DataScience #LearningJourney #TechSkills #BeginnersInTech

📊 Student Performance Predictor Built a regression model to estimate student GPA using different ML techniques. The project involved proper data cleaning, exploratory data analysis, and selecting the most impactful features. Compared Linear Regression and Random Forest, where Random Forest performed better in terms of accuracy. Some key factors influencing performance: Studytimeweekly, Absences, .... etc. 🛠 Tools: Python, Pandas, Scikit-learn, Plotly #MachineLearning #DataScience #Python #StudentProject #MLProjects