Getting Started with Natural Language Processing — In Natural Language Processing (NLP), we are often interested in analyzing a document for various metrics, such as how usually a word occurs in a document, how rare some words are, or the overall importance of some words. One such way is to use Term Frequency-Inverse Document Frequency (TF-IDF) technique. Term Frequency …

Getting into Qubits — In the context of classical computers, we are quite familiar with bits. What makes quantum computers appealing is the presence of something similar but with some randomness — qubit. In this article, we talk about qubits and Pauli matrices, a mathematical tool to operate on qubits. Qubits and Two-level Quantum Systems Consider an electron that…

In my previous article, I briefly discussed Hermitian products and their importance in Quantum Information Science (QIS). However, the story has just begun. At the heart of quantum systems is a postulate that I will roughly interpret as “the mere idea of measuring a quantity changes it”. The mere idea…

Why should we care about Hermitian Products? — In a previous article, I talked about 101 on where to start your journey toward quantum information science (QIS). Linear algebra and vector spaces are crucial pieces to get started with quantum information science. Another extremely important topic in QIS is Hermitian inner products and Hermitian matrices. Hermitian product is…

Your first step and more toward a US grad school — We saw a sharp rising in the intake of international graduate students right after pandemic-related restrictions were eased. …

A Poem — My keeper, my alter-ego, my dear Pen. I know it has been a while writing. I am very well aware of your anguish that is Letting you lose your heart and soul. You have been whimpering over the nib While I am busy with drudgery. From early slumber to dawn’s…

SUNDIALS is a collection of nonlinear and differential/algebraic equation solvers., developed by Lawrence Livermore National Laboratory (LLNL), led by computational mathematician Carol Woodward. SUNDIALS aims to provide robust time integrators and nonlinear solvers that can be easily integrated into existing simulation codes. The primary design objectives are to require minimal…

Think beyond CS MS/PhD when applying to grad school in the US — Computer Science (CS) is growing at a tremendous pace and is attracting countless undergraduates to pursue higher education in it. …

Python Examples — Pygame is a lightweight versatile Python package to create games in python, GUI for end-user applications, running simulations, etc. In this tutorial, I go through one class example that let you create an empty canvas with grids in Python. So let’s get started. Create a Class We first create a class named Window…