Nonlinear constrained optimization with PWL approximations
How to linearize a nonlinear objective with piecewise linear approximations, keep the segments adjacent using SOS type 2, and hand the result to an ordinary LP/MIP solver like Gurobi.
Tag: Backend
What managed WordPress hosting fixes in an agency stack
Most agencies build their own stack and end up debugging Nginx instead of shipping. What plugin bloat really costs, and what Encircle Technologies changed when they moved to managed hosting.
Causal inference and the accuracy trap in ML
A readmission model with 94% accuracy made things worse because it found a correlation, not a cause. Where Pearl’s ladder of causation comes in, and how DoWhy’s four steps keep you honest.
Why NumPy and Pandas give different variance results
Same ten numbers, two different variances. NumPy defaults to the population formula and Pandas to the sample one. Here is what ddof does and how to set it so your pipeline and your prototype finally agree.
Handling outliers and missing values in credit scoring
Mean imputation and unclipped outliers are what break credit risk models. This covers splitting first to avoid leakage, IQR clipping with training-set bounds, and what to do when the missingness itself is informative.
How JavaScript destructuring cleans up WordPress code
Manually reassigning object properties is a habit worth dropping. Array and object patterns, nested REST API responses, and rest properties, with the WordPress and WooCommerce cases where each one saves you lines.
Build a Navier-Stokes solver in Python from scratch
A walkthrough of writing an incompressible Navier-Stokes solver in Python with NumPy: momentum and continuity, finite difference discretization, the Pressure-Poisson step, and airflow around a wing.
Pattern overrides in WP 7.0 now work with custom blocks
WordPress 7.0 lets any block that supports Block Bindings take part in Pattern Overrides, not just the old Core list. You opt a custom block in with the block_bindings_supported_attributes filter.
Personalized restaurant ranking without the popularity trap
Popularity sorting puts the same big chain at the top of every shelf. A lightweight two-tower embedding setup, with a frozen TinyBERT on the item side, ranks restaurants by what the user is browsing for.
AI coding agents in WordPress Playground, wired with MCP
The @wp-playground/mcp package lets an AI client drive a Playground instance over MCP: run PHP, write files, query the database and check the front end, all inside the browser.