Data Analytics & Business Intelligence

Github Repository Hi community, I've built a open source PDF to Excel Converter and let me tell you...

Daily learning part thirty-two. I started today at 17:00. I started with SQL and completed 10...

Using Power BI to uncover sales trends, regional performance, and profitability inisight from a Nigerian Retail Dataset. Continue reading on Medium »

Author(s): Sai Bhargav Rallapalli Originally published on Towards AI. How I built a 98.8% accurate prediction model — and discovered that the “cleanest” fuel is

There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

I ran an RFM analysis on 17,000 e-commerce transactions from a Turkish online retailer. The results were eye-opening. Continue reading on Medium »

Série: Modelos Matemáticos para Data-Driven Decision Making — Step 07 / 12 Continue reading on Medium »

If you’ve ever worked with Spark, you know the usual workflow: write code, upload it to a notebook, run it on the cluster, debug through… Continue reading on Me

Blending regularized adjusted plus-minus with possession-level box production. Continue reading on Medium »

All numbers below are chain-derived via eth_getLogs against public RPCs. Nothing is self-reported,...

Grinding consumes 30–40% of cement plant electricity. Learn how to cut kWh/T by 8–15% using Python data analytics. Free code + GitHub repo… Continue reading on

Explore Apache Iceberg metadata hierarchy, schema evolution, hidden partitioning, and concurrency model.

How combining Databricks AI/BI Genie with Microsoft Teams transforms data teams from reactive report pullers into scalable semantic… Continue reading on Medium

Learning Through Experience Continue reading on Medium »

Hello SeaTunnel community! Continue reading on Medium »

Hello SeaTunnel community! Continue reading on Medium »

Uncovering payment behaviour, regional trends, and product performance from Nigerian retail sales data Continue reading on Medium »

Understanding entropy through surprise, probability, and uncertainty. Continue reading on Medium »

GBase 8a fully supports OLAP window functions, making it a powerful gbase database for analytical...

When people first start learning ClickHouse®, they usually focus on SQL queries, table engines, and...

Lower compute spend by optimizing queries: clustering keys, materialized views, predicate pushdown and scan reduction for Snowflake, BigQuery, Redshif

US unemployment is 4.3%. The curve even looks like it is calming down. The data underneath says otherwise. 2 million Americans have now… Continue reading on Med

There is no modern playbook for this. US core inflation — the gauge the Fed targets at 2% — is at 3.3% and re-accelerating. Outside Covid… Continue reading on M

apache pulsar vs kafka is the messaging question that every senior data engineer has answered twice...

kafka connect looks like "just another Kafka client" to a junior engineer — senior engineers know it...

This is my job search framework, the approach I follow every time I look for a new job. I want to cover mindset, preparation, finding jobs and applying, plus th

Introduction This week, I started learning Data Engineering concepts, and one of the most important...

David Ohnstad explains why federated data architectures create accountability gaps for PMs. Learn how schema enforcement and governance prevent revenue att

David Ohnstad reveals why data product managers struggle in federated architectures. Learn how organizational design undermines governance and trust in dec

Union-Find is fast, but it breaks for real-world entity resolution because it cannot handle safeguards, reversals, or ambiguous matches. A weighted graph approa

Monitoring is one of the most critical aspects of operating any production database environment. As...

Most dynasty fantasy football value sources are either crowdsourced votes or locked behind paywalls....

In a world where information changes by the minute, businesses need more than just access to data — they need access to the right data at… Continue reading on M

Missing data is a common problem in Data Science and can affect the accuracy and reliability of analysis and machine learning models… Continue reading on Medium

Architecture · Internals · Join Strategies · Catalyst & Tungsten · AQE · Memory Management · Performance Tuning · Spark 4.0 Continue reading on Medium »

A build-in-public failure story about why marketplace scrapers need state, sold signals, seller context, condition, and price history instead of only clean prod

A practical checklist for making marketplace scrapers safer: sold state, disappearance, seller country, condition, precision filters, price history, and review

As a financial analyst with a decade of experience, I see founders confuse revenue with profit every single day. Revenue is vanity, profit… Continue reading on

Improving Testing, Maintainability, and Consistency with Reusable Feature Definitions Continue reading on Medium »

How I used web scraping, AI, automation, and data enrichment to build a business prospecting system that worked 24/7 — and eventually… Continue reading on Pytho

When people think about data analysis, they often imagine beautiful dashboards, colorful charts, and sophisticated business metrics… Continue reading on Medium

Master A/B test sample size calculation including the relationship between baseline conversion rate, minimum detectable effect, and… Continue reading on Medium

Descriptive Statistics is a way to describe and summarize data. It helps us understand large amounts of data easily. Instead of looking at… Continue reading on

The lakehouse community spent this week arguing about versions, and the arguments mattered. Parquet...

• D A R S 4 Data Visualization Matplotlib · Seaborn Continue reading on Medium »

AI for Data Analysis: What Actually Works (And What's Just Demo Magic) Last month I...