---
title: "Tharun (@tharun-pandya) | Hashnode"
description: "Building AI Systems That Solve Real Problems. Read the latest articles by Tharun on Hashnode."
url: "https://hashnode.com/@tharun-pandya"
---

@tharun-pandya

# Tharun

@tharun-pandya · Bangalore, India · Joined June 2026

Building AI Systems That Solve Real Problems.

### [Logistic Regression: The Workhorse of Yes or No Problems](https://tharunpandya.hashnode.dev/logistic-regression-workhorse-yes-no-prediction?utm_source=hashnode&utm_medium=feed)

Understand logistic regression from scratch as a weighted sum passes through the sigmoid function to produce probabilities for yes-or-no predictions.

6 min read · [tharunpandya.hashnode.dev](https://tharunpandya.hashnode.dev/logistic-regression-workhorse-yes-no-prediction?utm_source=hashnode&utm_medium=feed)

[Sep 25](https://hashnode.com/posts/logistic-regression-workhorse-yes-no-prediction/6ab6f25705f5ca4340e0286a)

### [The Sigmoid Function: Squashing the World Into 0 and 1](https://tharunpandya.hashnode.dev/the-sigmoid-function-squashing-the-world-into-0-and-1?utm_source=hashnode&utm_medium=feed)

Learn how the sigmoid function turns raw model scores into values between 0 and 1, with intuition, math, probability, and Python examples.

7 min read · [tharunpandya.hashnode.dev](https://tharunpandya.hashnode.dev/the-sigmoid-function-squashing-the-world-into-0-and-1?utm_source=hashnode&utm_medium=feed)

[Sep 19](https://hashnode.com/posts/the-sigmoid-function-squashing-the-world-into-0-and-1/6aae155283a9110a1161ce6d)

### [From Lines to Decisions: Why Regression Fails at Classification](https://tharunpandya.hashnode.dev/from-lines-to-decisions-why-regression-fails-at-classification?utm_source=hashnode&utm_medium=feed)

Learn why linear regression fails at classification, how predictions can go below 0 or above 1, and why sigmoid is needed for probabilities.

9 min read · [tharunpandya.hashnode.dev](https://tharunpandya.hashnode.dev/from-lines-to-decisions-why-regression-fails-at-classification?utm_source=hashnode&utm_medium=feed)

[Aug 31](https://hashnode.com/posts/from-lines-to-decisions-why-regression-fails-at-classification/6a95d4e6626ac941e43dfc2f)

### [Polynomial Regression: Teaching a Line to Bend](https://tharunpandya.hashnode.dev/polynomial-regression-teaching-a-line-to-bend?utm_source=hashnode&utm_medium=feed)

Learn polynomial regression from scratch using a delivery-time example, x^2, feature engineering, and gradient descent to fit curved patterns.

10 min read · [tharunpandya.hashnode.dev](https://tharunpandya.hashnode.dev/polynomial-regression-teaching-a-line-to-bend?utm_source=hashnode&utm_medium=feed)

[Aug 22](https://hashnode.com/posts/polynomial-regression-teaching-a-line-to-bend/6a8a080dea390438fc5306b1)

### [Feature Scaling in Machine Learning: Why It Matters](https://tharunpandya.hashnode.dev/feature-scaling-in-machine-learning-why-it-matters?utm_source=hashnode&utm_medium=feed)

Learn why feature scaling matters in machine learning and how Min-Max, Mean Normalization, and Z-score scaling help gradient descent learn better.

10 min read · [tharunpandya.hashnode.dev](https://tharunpandya.hashnode.dev/feature-scaling-in-machine-learning-why-it-matters?utm_source=hashnode&utm_medium=feed)

[Aug 19](https://hashnode.com/posts/feature-scaling-in-machine-learning-why-it-matters/6a85536c75f2e2bc48b0eedf)