Projects

Recent

• EasyCompare and BetterThanSPY · 2025 – present

  Free tools that apply the risk analysis professional investors use, such as volatility, drawdowns, correlation, and risk-adjusted return, to any stock or ETF. Part of QuantCommons, my evenings-and-weekends quantitative investing initiative.

• StockQuanta and CoinQuanta · 2018

  The first version of the same idea: quantitative insights on performance, risk, and diversification for stock and crypto investors, alongside the book I wrote for their members.

• DoubleTrust · 2005

  A mash-up of Google and Yahoo search results, built during my PhD in the early days of web mash-ups. BusinessWeek featured it in "Sampling the Web's Best Mash-Ups" (July 2005), ABC7 picked it as one of the top three fun and useful sites of the week, and the Associated Press and search and tech sites across the US and Europe covered it.

  Project page and press

Games and AI

Chinese Checkers

An AI player using minimax search with hand-tuned heuristics, so strong it's extremely hard for a human to beat. Windows GUI in Borland C++ Builder.

Game Source Report

Connect 4

Written during a technical festival at IIT Delhi, with a strong computer opponent. The folder also has a Minesweeper and a Knight's Tour solver.

Game Windows .exe

Space Invaders 3D

The classic game rewritten in OpenGL, with rendered 3D models, enemies with AI, and satellite-guided missiles.

Game

Algorithms

Evolving an intelligent ant with genetic algorithms, a Fibonacci heap, randomized selection, and the fast Fourier transform for fast polynomial arithmetic.

Evolutionary algorithms report

Graphics and visualization

Lights! Camera! Action!

A polygon-based 3D rendering and animation framework in Java, with a gallery of rendered scenes and animated movies.

Scene gallery Animations Report

Digital image processing

Morphing, JPEG encoding, fractal image compression, and spatial and frequency-domain filters, each with a write-up and results.

ScriptFlash

A simple scripting layer for generating Flash animations at runtime, built to animate algorithms on the web without a Flash editor. Samples include quicksort and depth-first search.

Visual Graph Studio

A graph algorithms workbench with a mouse-driven GUI I wrote from scratch in DOS.

Program Source

Systems, simulators, and hardware

SPARC simulator

A hardware-level, pipelined SPARC processor simulator and assembler in Visual C++, with hazard and forwarding examples.

Windows .exe Source Examples

Optima

A linear programming solver implementing the simplex algorithm, with exact fraction arithmetic.

Program Source Report

VSAT network simulator

A visual MAC-layer simulator for studying optimal resource utilization in VSAT satellite networks.

Simulator Source Proposal

MPLS path protection visualizer

An animated visualization of the segment-based path protection algorithms from my award-winning B.Tech thesis.

• Embedded systems visualization tool

  A Java tool for visualizing and analyzing embedded system platforms and bindings. Report

• A simple networking switch

  VHDL code and a Xilinx schematic for a hardware network switch, plus digital hardware design lecture notes I wrote in HTML.

• Networking course projects

  A Go-Back-N protocol simulation, queuing theory simulations, and a TCP client and server.

• Self-similarity in network traffic

  Programs for generating and analyzing self-similar and heavy-tailed traffic, from a network dynamics course.

• Research software

  Patterns, a synthetic parallel benchmark that generates deadlock-free communication schedules for meshes, toroids, hypercubes, and trees (patterns.tgz), and a P2P gossip protocol simulator (sim.tar.gz). More in Research.

• IBM internship

  Solutions for developing large-scale distributed e-government applications with IBM Content Manager. Report

Contests and puzzles

• Programming contests

  Competed in algorithm and programming contests through school and college, for the quick thinking and the adrenaline, including the ACM ICPC World Finals in Vancouver in 2001.

• Bitwise online programming contest

  Problems, rankings, and my team's solutions from Bitwise, an algorithm-intensive online contest. Solutions · C++ code book

• Calendar Conundrums

  What's the smallest calendar program you can write? My answer fits on one line.

File archive

Everything from the original project folders, including source code, executables, data, and course write-ups, is kept here as it was.

• A simple networking switch 120 files · 5.1 MB
• Algorithms 67 files · 4.7 MB
• Bitwise programming contest 25 files · 546.7 KB
• Calendar Conundrums 3 files · 54.3 KB
• Chinese Checkers 44 files · 2.3 MB
• Connect 4, Minesweeper, and Knight's Tour 39 files · 844.5 KB
• Digital image processing 298 files · 15.1 MB
• DoubleTrust 41 files · 1.2 MB
• Embedded systems visualization tool 24 files · 3.7 MB
• IBM internship 119 files · 6.2 MB
• Lights! Camera! Action! (3D rendering) 272 files · 11.9 MB
• MPLS path protection visualizer 5 files · 329.2 KB
• Networking course projects 43 files · 3.8 MB
• Optima 50 files · 680.4 KB
• Research software 3 files · 765.2 KB
• ScriptFlash 12 files · 713.9 KB
• Self-similarity in network traffic 8 files · 1.5 MB
• Space Invaders 3D 5 files · 288.4 KB
• SPARC simulator 24 files · 723.6 KB
• Undergraduate humanities essays 132 files · 8.9 MB
• Visual Graph Studio 9 files · 308.3 KB
• VSAT network simulator 17 files · 1.3 MB