Retrieval-augmented generation is past the demo stage. Notes on chunk size as an experimental variable, why HNSW precision degrades as the index grows, the latency cost of extra retrieval layers, and a transient wrapper for caching retrieval in WordPress.
Rolling-window forecasts treat every SKU as independent. This post models a WooCommerce catalog as a graph instead, with GraphSAGE over shared plants and attributes, the PHP that extracts SKU neighbors, and where heterogeneous transformers go further.
A multi-agent Autogen loop running Mixtral 8x7B locally on an M3 MacBook rewrote a Rust matrix multiply until it hit NEON SIMD and Rayon, taking it from 760ms to 359ms. Notes on how the loop was set up and where the generated code went wrong.
An L40S idling a full second between batches is a data transfer problem, not a compute problem. How multi-worker output processing, pre-allocated pinned buffers and dedicated CUDA streams took one PyTorch inference pipeline to about 4X throughput.
Poisoned training data does not crash anything. It shifts your model’s weights while the accuracy score stays high. Who does it and why, from malware authors to artists using Nightshade, plus what a sanitization layer on your ingestion path needs to check.
RGB alpha blending averages channels, so background color stays baked into the edges of every cut-out. Moving the operation into Lab and deprojecting the chroma vector removes the spill, and a three-tier mask fallback keeps the pipeline running when a model chokes.
GPU starvation, not GPU speed, is what slows most training runs. How I find AI/ML data transfer bottlenecks in an nsys trace, then fix them with num_workers, pinned memory and a CUDA stream prefetcher.
WordPress AI Client v0.4.0 rewrites the Google, Anthropic and OpenAI providers, adds PSR-14 events and a caching layer. What that means for plugin authors ahead of the February 19th Beta 1 for Core 7.0.
AI can write a WooCommerce feature in seconds, and it usually writes it as one 150-line God function with a hard-coded API key. This is what that debt costs and how to refactor it into something maintainable.
Hardcoded API keys hold up until the first model deprecation. Here is how I use AWS Bedrock as the gateway instead: Boto3 calls, inference profiles, IAM permissions, and a triage assistant that runs on Lambda rather than inside the WordPress request cycle.