How Do AI Companies Get Their Training Data?
Originally published at aidata.broker . AI companies get their training data through six channels: they crawl the open web, license content from pub…
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Tracing Fraud Rings with a Graph: What I Learned Building with FalkorDB
Banks flag suspicious transactions all day. The hard part isn't the flag—it's seeing what's behind it. Fraud rings can hide in relationships: accoun…
Как в МТС Premium научились искать ошибки в распределенных данных с помощью собственного фреймворка
Качество данных (DQ) связано с технической зрелостью продукта, но не сводится к ней. В большой системе проблема редко ограничивается одной таблицей…
8 Analytics Mistakes That Quietly Lead Teams to the Wrong Decision
It's Monday's leadership review. The dashboard says average order value is up 12% month over month. Everyone nods, the marketing team gets a pat on…
Yahoo Finance Historical Data Download Is Now Paid: 7 Alternatives
Yahoo Finance now charges $479/year to download historical data. Here are 7 free and paid alternatives, with prices, history depth and Python code.*…
The Saturday Data Run: 457 Matches, Six Exports, Zero Manual Steps
One match day, 457 finished matches across the data set. The daily export landed with 546 standings rows, 200 scorer lines and 198 rows of match sta…
Planet Zoo 2 cohabitation chart: which of the 1,221 animal pairs can actually share an enclosure
Planet Zoo 2 cohabitation chart: which of the 1,221 animal pairs can actually share an enclosure Planet Zoo 2 ships 130 species , which is 8,385 pos…
I Tracked Weather Forecasts for 3 Weeks to See How Wrong They Really Are
The idea Weather apps show a 7-day forecast like it's a fact. But how accurate is day 7, really, compared to tomorrow's forecast? I wanted real numb…
HealthKit to JSONL vs JSON: one snapshot survives a cut sync, the other gives you nothing
Two apps can write the exact same Apple Health records to disk and behave nothing alike the moment a sync gets interrupted. I benchmarked it on 2026…
Ask.com is dead. 197,000 of its questions are still in the archive.
Dated data post · 2026-10-07 · all numbers first-hand, snapshot time-stamped Ask.com closed on May 1, 2026 . The farewell page is blunt: "As IAC con…
How to Convert XML to PARQUET?
To Convert XML to PARQUET format can be achieved either through automated enterprise tools or customized ETL scripts: Automated Enterprise Software:…
How to Automate Fleet Emissions with J1939 Telematics and Continuous Diagnostics
How to Automate Fleet Emissions with J1939 Telematics and Continuous Diagnostics If you engineer products around the logistics or transit industry,…
I Analyzed 2,315 Wordle Answers to Find the Best Starting Words
Every Wordle thread eventually turns into the same argument: is it ADIEU? AUDIO? STARE? CRANE? Everyone has a favourite starter, and everyone swears…
Cutting AWS Storage Costs: S3 Tables vs. S3 Express One Zone
Last year, my team was fighting the "small file problem" in a standard S3 bucket. We were running massive Glue jobs that spent 40% of their executio…
From Raw Data to Business Decisions: Cleaning and Modeling JCars Logistics Sales Data in Power BI
The Brief JCars Logistics imports and sells vehicles across Kenya. I was handed a raw, deliberately messy 276-row sales dataset and asked to turn it…
Building an Interactive Excel Dashboard for E-commerce Product Analysis: A Case Study of Jumia Products
E-commerce data can look simple at first: product name, price, discount, reviews and rating. But turning a raw export into something a seller can ac…
A Case for JCars Logistics Business
Introduction Building a dashboard is only one part of a successful Business Intelligence (BI) project. Before a visual can provide meaningful insigh…
How we stopped breaking production pipelines with Snowflake zero-copy cloning
Ninety-eight percent of production data pipeline incidents happen because developers tested their code against a "subset" of data that didn’t actual…
A Complete Guide to A/B Testing for Data Analysts
A/B testing sounds simple: show half your users version A, the other half version B, and pick the winner. In practice, it’s one of the easiest place…
From Messy Rows to Management Decisions: Building a Power BI Solution for JCars Logistics
JCars Logistics sells and delivers vehicles across Kenya. Someone handed me one flat CSV, 276 rows and 32 columns, and asked for three things: an ex…
ersioning Business Semantics for Enterprise AI
Your SQL can be perfectly reproducible while your business meaning is not. Suppose a user asks: What was revenue in Q1? Your data agent resolves Rev…
The Snowflake Iceberg Pivot: Why Your Data Warehouse Should Be a Storage Engine
Ninety percent of the "performance" you pay for in Snowflake is actually just a tax on your inability to move your data. If you’re like most enginee…
How Databricks Serverless Compute Cost My Team $14k in One Weekend
It’s Sunday, 2:14 AM. The PagerDuty alert hits my phone with that specific, jarring frequency that makes your stomach drop before you’ve even opened…
Power BI: Data Modelling, Relationships and Joins
Introduction When I first approached a health dataset in Power BI, I was more interested in the dashboard than the structure behind it. I wanted to…
Hotel Data vs E-commerce Data: Why They're Nothing Alike
If you've ever built an e-commerce data pipeline and assumed hotel data would follow the same patterns — you're in for a rough ride. I learned this…
Агент пишет код. Что тогда остаётся инженеру данных?
В работе инженера данных хватает повторяющихся задач: забрать данные из API, проверить структуру, преобразовать поля, записать результат в хранилище…
Building an Interactive Excel Dashboard for E- Commerce Product Analysis."A case study of Jumia Products."
Project Introduction and Objective After two weeks of intensive learning at LuxDev HQ, where I was introduced to different concepts, tools, and prac…
Reproducible CSV catalog QA with Python: validation, traceability, and safe exports
Small catalog files often fail in production for boring reasons: a header changes case, a price arrives as text, a duplicate SKU slips through, or a…
I Built a Production Grade ML Candidate Ranking System
The Challenge Three months ago, I participated in the Redrob India Data & AI Challenge. Track 1: given 100,000 candidate profiles and a job desc…
Building Automation LLMs: What 66 Studies Reveal About Deploying Agents in HVAC Systems
Building automation systems produce terabytes of sensor data but remain operationally blind. Point names differ across vendors. Metadata is missing…