Articles | Ravshan S.K.

Valuation Calculator for Subscription-Based Businesses

Last summer I worked on a project that used Daniel McCarthy, Peter Fader and Bruce Hardie’s valuation model, described in their paper “Valuing Subscription-Based Businesses Using Publicly Disclosed Customer Data” available at SSRN.


Simulating Likert scale data in R

In my last project I had to find theoretical limits for a psychometric index involving Likert scale data (aka categorical data). After successfully finding it, I decided to test the results in a simple Monte-Carlo simulation.


Object-oriented Game of Life in Python


I have been planning to build a superior GUI alternative to NetLogo for a long time. When I finally started working on a project, I decided to test the basic implementations in Python. Sure enough, the first app was Conway’s Game of Life - a great special case of cellular automata.


Bitcoin forgot its roots. Should we tax it?

Bitcoin was invented and became popular first within a crypto community whose members were predominantly influenced by the so-called “hacker culture”.


Introducing Panel FMOLS/DOLS command for Stata

Last week I was hired to perform a thorough analysis of a panel dataset for export dynamics of different sectors in a country. I had never done panel econometrics before or even read it in a textbook. But since I am good at cross-section and time-series, I believed I could handle the task. And I wasn’t wrong.


Using impulse response functions to interpret partial effects in neural networks

This week I’ve been working on a research paper based on a very simple idea which, hopefully, can solve an important problem in applying machine learning techniques in economics — the interpretability. So, if you recall, the neural networks is the generalization of a logit model where sigmoid of a linear combination of inputs is used iteratively.


Transform Excel into a translation tool using this VBA macro

A brief preface

This summer I did an internship at BSH Hausgeräte (aka Bosch and Siemens Home Appliances), where I built a lot of amazing tools on Excel using VBA (Visual Basic for Applications). I helped them automate monthly reports, which now take just a few seconds to complete. I would’ve contribute a lot more to the company if not for the corporate restrictions, according to which I wasn’t authorized to access code from other departments.