Machine Learning 05 | Decision Tree & Random Forest | DA | GATE Crash Course

We dive deep into the fundamental yet powerful algorithms: Decision Tree and Random Forest. We begin by explaining the Decision Tree structure, covering key concepts like Entropy, Information Gain, and the Gini Index to understand how the algorithm finds the optimal split points for classification and regression tasks. Next, we transition to Random Forest, a crucial Ensemble Learning technique that leverages a multitude of uncorrelated decision trees (via Bagging and Feature Randomness) to significantly boost prediction accuracy and, most importantly, mitigate the problem of overfitting. We conclude with a detailed comparison of Decision Tree vs. Random Forest in terms of bias-variance tradeoff, complexity, and when to use each for optimal performance in your projects and GATE preparation. 📕 𝐁𝐚𝐭𝐜𝐡/𝐂𝐨𝐮𝐫𝐬𝐞 𝐋𝐢𝐧𝐤𝐬:- Mission ISRO CSE - https://www.geeksforgeeks.org/courses... Mission ISRO ECE - https://www.geeksforgeeks.org/courses... GATE 2026 CS & IT Test Series Link - https://www.geeksforgeeks.org/courses... GATE 2026 DA Test Series Link - https://www.geeksforgeeks.org/courses... GATE Rank Booster With Expert - Curated Questions - https://practice.geeksforgeeks.org/co... All courses - https://www.geeksforgeeks.org/courses... GATE SPL. Combo Course - CSIT + DA 2026 (Combo course) - https://www.geeksforgeeks.org/courses... (With Placement Prep) - https://www.geeksforgeeks.org/courses... GATE CSE Weekday (2026) - https://www.geeksforgeeks.org/courses... (2027) - https://www.geeksforgeeks.org/courses... (2028) - https://www.geeksforgeeks.org/courses... GATE CSE Weekend (2026) - https://www.geeksforgeeks.org/courses... GATE CSIT With Placement Preparation Complete Course (2026) - https://www.geeksforgeeks.org/courses... (2027) - https://www.geeksforgeeks.org/courses... (2028) - https://www.geeksforgeeks.org/courses... GATE SPL. Combo Course - CSIT + DA (2027) - https://www.geeksforgeeks.org/courses... (2027 + Placement Prep.) - https://www.geeksforgeeks.org/courses... (2028) - https://www.geeksforgeeks.org/courses... (2028 + Placement Prep.) - https://www.geeksforgeeks.org/courses... Gate CSE Semester & Placement Preparation (2027) - https://www.geeksforgeeks.org/courses... (2028) - https://www.geeksforgeeks.org/courses... For any query visit https://www.geeksforgeeks.org/courses... Or reach us at +91-08069289001 RECOMMENDED CHANNELS FOR YOU: GeeksforGeeks GATE -    / @gfg_gate   GeeksForGeeks GATE EE/EC/IN -    / @gfg_ec_ee_in   📚 Stay tuned for more Maha Marathon sessions on all GATE topics! 💬 Don't forget to comment your doubts and feedback! 👉 Subscribe to our channel for more GATE preparation content and hit the 🔔 to never miss an update! 👍 Like | 🔄 Share | 📢 Spread the word #SupportVectorMachine #SVM #KernelTrick #Hyperplane #MachineLearning #GATEDataAnalytics #GATE2026 #SupervisedLearning #MaximumMargin #MLforGATE #MachineLearningForGATE #MLByParthSir #GATEForMachineLearning #GfG #GfGGATEEnglish #GATEEnglish