r2ds-blog

Stochastic Optimization

news
code
analysis
Synergy and complementarity are terms that aptly describe the relationship between machine learning and optimization. In machine learning, optimization is often the tool…
May 10, 2025
Rajiv Sambasivan

Accuracy, is that what we are after?

news
code
analysis
Is accuracy the ultimate goal of a data scientist’s work? A recent WhatsApp forward I received portrayed data scientists as being singularly focused on model accuracy, as if…
May 5, 2025
Rajiv Sambasivan

The Magic Pill Approach

news
code
analysis
This post is more of a rant, really. I’m fine with asking ChatGPT for movie recommendations on Netflix or Prime, but when it comes to answering complex, nuanced questions…
May 1, 2025
Rajiv Sambasivan

Using Hidden Markov Models with the Coffee Prices Data

news
code
analysis
I started writing about coffee prices kind of on a whim—mostly because I wanted to try out this tool called quarto that I’d heard good things about. At the same time, I was…
Apr 26, 2025
Rajiv Sambasivan

Understanding Coffee Prices

news
code
analysis
The question of whether I will continue paying these high prices for coffee was a “nerd itch” I simply had to scratch. Below is a plot showing the coffee prices (in cents…
Apr 26, 2025
Rajiv Sambasivan

Predictive Modeling without Supporting Data Analysis

news
code
analysis
In my opinion, relying on models without prior data analysis is problematic. This is particularly true for business applications that work with regular tabular data. While…
Apr 23, 2025
Rajiv Sambasivan

Chat GPT and Data Analysis

news
code
analysis
For a while now I have been meaning to explore how Copilot and Chat GPT are useful for data analysis. I have also been meaning to transition to Quarto for a while, so I…
Apr 23, 2025
Rajiv Sambasivan
No matching items