Rahul Kumar

@rahul-713

Engineer crafting AI and data science solutions.

New Delhi , IndiaJoined December 2024

About

Nothing here yet.

Available for

Nothing here yet.

Rahul Kumar's blogs

Data Science Notesdata-science-notes.hashnode.dev9 posts

Data Structures and Algorithmsdata-structures-and-algorithms-notes.hashnode.dev3 posts

Articles Comments

Recently published

RKRahul Kumardata-structures-and-algorithms-notes.hashnode.devNov 4, 2025 · 6 min read

The Dynamic Path – Mastering Dynamic Programming, One Thought at a Time

The Confusion Before Clarity Imagine you’re sitting in front of your screen, staring at a problem like “Find the maximum sum of non-adjacent elements in an array.” You’ve tried recursion, brute force, even prayed to the algorithm gods—but the output ...

0

RKRahul Kumardata-structures-and-algorithms-notes.hashnode.devNov 3, 2025 · 19 min read

String Algorithms

Sorting Algorithms KMP (Knuth–Morris–Pratt) Algorithm Core idea Build a table of how far to "jump back" in the pattern when a mismatch happens, using the pattern's internal prefix-suffix structure. Then scan the text once, reusing previous partial ma...

0

RKRahul Kumardata-structures-and-algorithms-notes.hashnode.devNov 2, 2025 · 18 min read

Searching and Sorting Algorithms

🧠 Binary Search Core Idea Binary Search works on sorted arrays.It repeatedly divides the search interval in half — compare the target with the middle element: If equal → found If smaller → search left If larger → search right Time Complexity B...

0

RKRahul Kumardata-science-notes.hashnode.devMay 7, 2025 · 2 min read

Understanding Root Mean Squared Logarithmic Error ( RMSLE )

Explaination A. What is RMSLE? RMSLE is an evaluation metric used for regression problems. It measures the ratio-based difference between predicted and actual values rather than absolute differences. RMSLE is especially useful when: You care more ab...

0

RKRahul Kumardata-science-notes.hashnode.devApr 13, 2025 · 8 min read

🧠 Zero to Hero : Text Vectorization

📌 What is Text Vectorization? In NLP, machines can’t understand text directly — they understand numbers. Text vectorization is the process of converting textual data into numerical vectors so that we can feed them into machine learning or deep learn...

0

Rahul Kumar

About

Available for

Rahul Kumar's blogs

Recently published

The Dynamic Path – Mastering Dynamic Programming, One Thought at a Time

String Algorithms

Searching and Sorting Algorithms

Understanding Root Mean Squared Logarithmic Error ( RMSLE )

🧠 Zero to Hero : Text Vectorization

Search Hashnode

Rahul Kumar

About

Available for

Rahul Kumar's blogs

Recently published

The Dynamic Path – Mastering Dynamic Programming, One Thought at a Time

String Algorithms

Searching and Sorting Algorithms

Understanding Root Mean Squared Logarithmic Error ( RMSLE )

🧠 Zero to Hero : Text Vectorization