Recent posts tagged datascience

Advanced SQL analytics for running a hospital database. Introduction Structured Query Language is essential and common in most industry sectors. In healthcare reporting, SQL plays a critical role in analytics. PostgreSQL lets data scientists take ...

> Originally published at vibeagentmaking.comhttps://vibeagentmaking.com/blog/a-thousand-cleared-ai-devices/. The FDA publishes a spreadsheet of every AI-enabled medical device it has ever authorized. One row per device: a name, a company, a clearan...

In the latest releasehttps://github.com/thingsdb/ThingsDB/releases/latest, ThingsDB introduces native support for UUIDs alongside a powerful new typed dictionary pattern dict that simplifies high-performance key-value lookups. While ThingsDB relies ...

Data Modeling in Power BI Introduction At a time when data is rapidly generated by different activities ranging from experiments to business, more often do we get data in different formats and structures. The data may or may not be related dependi...

Originally published at vibeagentmaking.comhttps://vibeagentmaking.com/blog/the-forgetting-curve-everyone-cites-is-ebbinghaus-s-own-column-relabeled-the-90-is-not-in-it/. The "half in an hour, 70% in a day" figures that training blogs attribute to E...

Enterprise social listening platforms like Brandwatch or Sprout charge upwards of $800 to $2,000/month per seat. Under the hood, many still rely on brittle dictionary lookup tables VADER-style positive/negative lexical scoring or generic regex filter...

A small CSV can be easy to load and surprisingly easy to misinterpret. This walkthrough uses dataHabibi's owned June 2026 Dubai community rental-yield snapshot to show how to preserve units, missing values and the distinction between a community and ...

> Originally published at vibeagentmaking.comhttps://vibeagentmaking.com/blog/fmcsa-16414-suspensions-five-of-280-owned-no-trucks/. On January 16, 2026, the last piece of a federal rule about freight brokers came into force. Under 49 CFR 387.307, a ...

Your backtest equity curve is merely one historical trajectory out of millions of equally probable alternatives. The total profit of your trading system is invariant to order: 100 closed trades will yield the exact same ending dollar return whether ...

On October 31, 2019, the Department of Commerce signed an award with Accenture Federal Services to "improve patent search with artificial intelligence." USAspending.gov, the federal government's public ledger of what it spends, records the award at $...

If you have ever written a one off script to read a CSV that was not really a CSV, this one is for you. It is a small open source Python package built around a pattern more of us should borrow: the model writes code once, and deterministic code does ...

The state Comptroller found two complaints in twenty-four months. Cornell's team found 14 audit reports among 267 employers. Both measurements hit the same wall: a disclosure rule whose scope is set by the discloser produces a record that cannot tell...

When I first started learning about neural networks, I found the idea both fascinating and slightly intimidating. The phrase “neural network” makes it sound like something extremely complex, and honestly, once you start looking at layers, weights, a...

From Raw Logs to Business Strategy: How I Taught Myself Data Engineering & Analytics I didn’t take the traditional path into data. Over the past 12 months, I bypassed the university lecture halls to teach myself relational database architecture, pi...

Why Perfect Backtests Fail: Walk-Forward Optimization and Deflated Sharpe in Python Every quantitative trader and algorithmic developer knows this pattern: you design an intraday or swing strategy, optimize parameters in MetaTrader, TradingView, or...

Most of us here write software for products, but a surprising amount of the same work happens in labs and research groups, written by people who were never taught to write code. If you have ever inherited a research script and wondered why it does wh...

Most of us ship a model that returns one number and then bolt a confidence score onto it afterwards, usually because somebody asked. Operational meteorology went the other way decades ago: the distribution is the product, and the single run is just o...

Four-Leaf's SQL Interview Guide1 Key takeaways A SQL interview is a translation test. The syntax is the easy half, and most candidates who fail were fluent in SQL. What sinks them is starting to type before the question is pinned down, or writing a...

In the realm of applied data science, building a model that performs well on static datasets is a standard rite of passage. But deploying an AI to predict outcomes in a chaotic, high-variance environment-such as professional sports-is an entirely dif...