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About This Index

coeld is the system index and digital workspace of Cedric Oeldorf, a researcher and builder working in applied AI.

For longer arguments, see Essays. For notes, frameworks, and case studies, see Guides. For working tools and prototypes, see Toolbox. Search the full corpus below or read it as a chronological log.

9 entries

Framework

A Practical Guide to Entity Resolution

12 min read

A general guide to matching messy records into governed entities, with blocking, scoring, selective review, clustering, survivorship, and evidence-first reference tables.

May 2026
Essay

A Context Layer for Teams

8 min read

Most teams already have the raw material for a context layer in Drive, Slack, and scattered transcripts; the hard part is turning that sprawl into a shared record that people and agents can use without rebuilding the history each time.

Apr 2026
Note

What TurboQuant Is and Why It Matters

6 min read

Google’s new TurboQuant method compresses key-value cache and search vectors more aggressively by cutting quantization overhead, which could make long-context inference and retrieval cheaper and faster.

Mar 2026
Essay

The Future of Personal AI Is Local by Default

9 min read

Hardware, model compression, frontier benchmarks, and pricing all point to the same outcome: local AI becomes the default for ordinary work, while cloud models remain the escalation path for the hardest tasks.

Mar 2026
Note

PDF vs Markdown for AI: Token, Speed, and Storage Benchmarks

8 min read

A file-level benchmark comparing PDF and Markdown on storage, prep speed, and token estimates, including an image-bearing Grimm fairy tales PDF.

Mar 2026
Tool

PDF to Markdown

Live

Turn a text PDF into lean Markdown that saves tokens and fits a personal context layer.

Mar 2026
Framework

How to Build a Personal Context Layer with Claude, Codex, and Obsidian

11 min read

A practical framework for using folders, Markdown, per-project agent contracts, and Obsidian as a durable local context layer.

Mar 2026
Essay

Back to Basics: Desktop Folders Are Becoming the Main UI Again

5 min read

AI work is moving out of the chat box and back into project folders, because files are the simplest durable context layer for coworker-style tools.

Mar 2026
Tool

Context Layer Generator

Live

Generate a kickoff prompt for a new Claude or Codex local context layer.

Mar 2026