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1.What Is Data Science? Data Science is the field of collecting, preparing, analyzing, and interpreting data to discover useful information and solv…
I gave DeepSeek V3 forty chances to find a profitable trading strategy. A simple heuristic found +52% net. The LLM's early proposals lost money. Aft…
Written down now, graded later, no edits allowed. The Brewers and the Rays open the World Series on 23 October 2026. Before the first pitch, I'm put…
A spraying drone can follow its route accurately while its treatment report remains wrong. The usual failure is a mismatch between three quantities:…
The ODI Cricket World Cup 2027 starts in South Africa, Zimbabwe and Namibia in October 2027. I wanted to know who is likely to win, and I wanted a p…
Glassdoor is one of the few job boards that shows a salary range next to the job : either the employer's own or a Glassdoor estimate. It also shows…
Run enough configurations against the same history and the top row will eventually look exceptional, even if no durable edge exists. That's overfitt…
Hardening Multi-Agent RAG Pipelines with ruflo: Token Cost Boundaries and Prompt Cache Integration When integrating ruvnet/ruflo (🌊 the original age…
Putting EURUSD, gold, a US stock and Bitcoin on one price axis usually tells you more about their units than their movement. A price near 1 disappea…
Introduction This week, I worked on a pharmacy sales dataset using pandas. The dataset had 6,150 rows and 26 columns, covering orders, products, cus…
A hospital database rarely stores every useful detail in one table. Patient details may be stored separately from visit records. Doctor, department,…
A company's open roles hint at where its money is going next. If it adds five enterprise Account Executives in Germany, it probably plans to sell ha…
You built a survey with several questions that are supposed to measure the same thing (say, "job satisfaction" or "stats anxiety"). Before you avera…
Originally published at tensorust.com . TL;DR: On October 17, 2026 I pulled every daily download number crates.io has for my 69 Rust crates. Over 89…
If you've ever tried to chart 12 keywords from Google Trends, you've hit the wall: the compare box takes 5 terms max . The obvious workaround (run t…
Booking.com spends more on performance marketing than almost any company in travel. You can't see their budget, but you can see their ads: Google an…
For years, pytrends was the default way to get Google Trends data in Python. Today its GitHub repository is archived (read-only), and its last relea…
Maryland publishes every layoff notice it gets on one web page . It's a table, it's public, it's current, and you can't do anything with it. No sort…
The Python Institute PCAD-31-02 exam has 48 items, and 30 of them come from two syllabus blocks: Data Acquisition and Pre-Processing (14) and Progra…
The Hidden Goldmine (and Nightmare) of Japan's Open Data Japan’s government ministries publish massive amounts of open public data: Multi-billion-do…
The Silent Nightmare of Dirty CSV Files Every data engineer, analyst, and backend developer has experienced this: your automated ETL pipeline crashe…
Hourly time-series data rarely arrives clean. Hours go missing, timestamps repeat, sensors report impossible values, and some series start years aft…
Most of what we publish at The Cardano Record comes from our own cardano-db-sync node. This segment doesn't. Strike Finance is Cardano's perpetuals…
Under CIP-1694, a Cardano governance vote can carry an anchor : a URL to a document that explains the vote, plus a blake2b-256 hash of that document…
TL;DR — Kafka/Flink pipelines are built around record-at-a-time, backpressure-aware processing, while model servers get their throughput from batchi…
Main Research Questions and Why They Matter The main research questions asked by the research paper authors were: What are issues with visualizing v…
Have you ever wondered why your Apple Watch suddenly pings you to "take a breath" exactly when your boss sends that "Can we hop on a quick call?" Sl…
Healthcare AI evaluation often focuses on model outputs, including discrimination, calibration and predictive performance. These measures are import…
Alright, team! In our last post, we kicked off our dive into linear algebra for data science by looking at how we represent data using matrices and…
Alright, so you're diving into data science, and everyone keeps talking about linear algebra. Don't sweat it! It's a super fundamental part of this…