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Transformation & Modeling
dbt, SQL, semantic layers and the modeling of data for analysis.
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Plotting histograms in the terminal
27+ min ago (883+ words) A simple C library for plotting histograms in the terminal. Tagged with coding, github, opensource, programming....
What is Vectorization in Data Science? How it Speeds Up Statistical Computing
1+ day, 15+ hour ago (761+ words) Vectorization replaces manual, element-by-element loops with operations that run across entire arrays at once. The speed gain comes from compiled code, CPU features like SIMD, and better memory access, not from shorter syntax alone. The technique has limits: dependent calculations,…...
Build an insider-buying screener with Python and SEC Form 4 data
4+ hour, 4+ min ago (1355+ words) A director bought $101,760 of Tenax Therapeutics. Another bought $500,000 of Inhibrx Biosciences. Sorted by dollars, the second purchase comes first. Measured against the holding reported with each transaction, the increases were 2330.7% and 1.2%. Both numbers came back in the same API field....
Applied Sciences, Vol. 16, Pages 9330: IT2ANFIS with Dual Uncertainty in Membership Function: A Gradient-Based Learning Approach
5+ hour, 2+ min ago (465+ words) Modeling under uncertainty remains a fundamental challenge in engineering and nonlinear system identification, particularly when both interpretability and computational efficiency are required. Interval type-2 adaptive neuro-fuzzy inference systems (IT2ANFIS) have demonstrated strong capabilities in handling uncertainty; however, the considered approaches typically…...
Data Modelling,Relationships and Joins.
5+ hour, 43+ min ago (18+ words) Introduction Data modelling is the process of defining tables and establishing their... Tagged with datascience, data, powerquery, dax....
Scaling ETL to 25M+ Records Across 120+ School Districts: An Architecture Story
5+ hour, 50+ min ago (987+ words) When you're moving a few thousand records, ETL is mostly a data-processing problem. When you're moving 25+ million records across 120+ school districts, it becomes something else entirely: A distributed-systems reliability problem where you need to prove that the data moved correctly....
My "real reading" metric has only ever been fired by bots
6+ hour, 39+ min ago (527+ words) My problem is ordinary: most of what touches a small site is not a reader. It is scrapers, link checkers, indexers. Visit duration does not help me — the tool I use defines a bounce as a visit with a single…...
Self-hosting a full monitoring stack in one command: servers, logs, APM and status pages
15+ hour, 49+ min ago (254+ words) Teams self-host monitoring for two reasons: the data cannot leave the building, or the SaaS bill grew faster than the fleet. The catch is that "self-hosted monitoring" usually means five services. This post is about what those five are, what…...
10 Machine Learning Algorithms You Should Know
12+ hour, 34+ min ago (323+ words) Linear Regression. Logistic Regression. Random Forest. XGBoost. Neural Networks. You’ve probably heard all of these names. But if someone asks …...
USAspending API, No API Key: Federal Contract Awards
16+ hour, 58+ min ago (658+ words) USAspending.gov publishes federal award data through a public REST API that requires no authentication. There is no signup, no key header, no quota form. You POST JSON, you get JSON. Exactly one filter is required: filters.award_type_codes. Omit it and…...