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Systems, Data, and the Practice of Statistical Thinking


Agentic vs Deterministic Workflows: Designing a Reliable AI Application

Agents
LLM
App
Python

A case study on designing an AI-assisted workflow, discussing agentic autonomy and deterministic control through architectural decisions and production constraints.

Dec 13, 2025
Aleksei Prishchepo

Building an E-Commerce Dashboard with Power BI and R

BI
Statistics
ML
Visualization

An overview of the process of building an E-Commerce dashboard using Power BI and R, covering exploratory data analysis, time series forecasting, and causal modelling.

Nov 26, 2025
Aleksei Prishchepo

Propensity Score Matching for Causal Analysis

A/B Testing
Statistics
R

A hands-on guide to implementing propensity score matching in R for causal inference in A/B testing scenarios using marketing data.

Oct 31, 2025
Aleksei Prishchepo

Building the Analytical Dashboard with Power BI and R

BI
Statistics
ML
Visualization
R

An overview of the process of building an analytical dashboard using Power BI and R, focusing on data preparation, time series forecasting, and causal analysis.

Oct 26, 2025
Aleksei Prishchepo

Building a Credit Risk Dashboard with Power BI and R

BI
Statistics
ML
Visualization
R

A detailed walkthrough of creating a financial risk dashboard using Power BI and R, covering data cleaning, model building, and integration.

Sep 27, 2025
Aleksei Prishchepo

Time-Series Clustering with R’s dtwclust Package

Time-Series
Clustering
R
This article is a practical guide for time-series clustering using the dtwclust package. The dtwclust package in R (see vignette) provides a powerful and flexible framework…
Aug 27, 2025
Aleksei Prishchepo

Minimum Detectable Effect (MDE) Calculation

A/B Testing
Product
Statistics
R
Minimum Detectable Effect (MDE) is defined as the smallest difference between a control and a test group that your A/B test can reliably identify as statistically…
Aug 7, 2025
Aleksei Prishchepo

A/B Testing: Concepts and Techniques

A/B Testing
Product
Statistics

Key components, metrics, errors, CUPED, multiple testing, peeking, and Bayesian vs frequentist approaches.

Jul 29, 2025
Aleksei

Animation of Spatial Data

Visualization
Spatial
Animation
R

Creating an animated visualization of spatial data using R

Jul 4, 2025
Aleksei Prishchepo

Product Cards Creation Application

App
LLM
Python
This application is designed to create product cards for an online store. It utilizes a large language model (LLM) and programming libraries to generate detailed…
May 31, 2025
Aleksei Prishchepo

Creating Anki Flashcards From List of Words

NLP
Python
This notebook demonstrates how to create Anki flashcards from a list of words. The example uses a list of German words related to “Die Stadt” (The City) and translates them…
May 3, 2025
Aleksei

Implementing a Local Retrieval-Augmented Generation System

RAG
NLP
LLM
Python
RAG (Retrieval-Augmented Generation) is a technology that combines the search external sources and generation using large language models. It allows for more accurate and…
Mar 21, 2025
Aleksei

Nerdy Valentine’s in Python, R, and Matlab

Python
R
Matlab
Let’s celebrate Valentine’s Day with some nerdy love! In this post, we will create heart-shaped plots using Python, R, and Matlab. These heart-shaped plots are a fun and…
Feb 14, 2025
Aleksei

Run Docker Containers Remotely with Airflow

Airflow
Docker
Airflow is a powerful tool for automating workflows. Once you start using it, you’ll likely find it a great replacement for cron jobs on Linux machines. One common use case…
Jan 8, 2025
Aleksei

BI System Blueprint

BI
ETL
In this post, I’d like to present a blueprint for a BI system that I’ve been working on. The system is designed to provide insights into the company’s performance and…
Jan 6, 2025
Aleksei

CV Week 2024

CompVis
ML
In November 2024, the Yandex School of Data Analysis (YSDA) and Yandex conducted an open online intensive course on computer vision, focusing on generative diffusion models…
Dec 18, 2024
Aleksei

Using Airflow FileSensor for Triggering ETL Process

ETL
Airflow
In this article, we will discuss how to use the Airflow FileSensor to trigger an ETL process. We will walk through the process of setting up a FileSensor in Airflow and…
Nov 5, 2024
Aleksei

European Tech Salaries

Money
R
Recently, I stumbled upon a Reddit post where someone was gathering salary data from the tech sector throughout Europe. It piqued my interest to explore how these salaries…
Sep 27, 2024
Aleksei

Python Library for Russian Macroeconomics Data

Time-Series
Macroeconomics
Python
The article introduces a Python library called sophisthse that provides access to Russian macroeconomic statistics time series published by the National Research University…
Aug 22, 2024
Aleksei

Kano Method for Prioritization of Features

Marketing
Product
Python
The Kano model is a theory for product development and customer satisfaction developed in the 1980s by Professor Noriaki Kano. The model classifies customer preferences into…
Aug 5, 2024
Aleksei

Merging Customers Records Using Graphs in Python

Python
Graphs
Traditional relational databases and spreadsheets fall short in capturing complex relationships among customers. Enter graph theory – a powerful framework for representing…
Jul 31, 2024
Aleksei

Exploring Geospatial Insights with R and rnaturalearth

R
Geo
The article showcases the utilization of the rnaturalearth package for handling geographical data. This package provides valuable tools and functions for working with…
Jul 25, 2024
Aleksei

Welcome To My Blog

News
This is the first post in my blog. Welcome!
Jul 21, 2024
Aleksei
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