Ler Tech Notes
LerLer ChanInstructor of AI Agent classes | Programmer since 2010 | Blogging since 2007 | Helping working adults and students build practical AI tools | Exploring ethical AI writing, automation, and education.
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 90 | Founded | a year ago | Last Issue | 24 hours ago |
| Active | |||||
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lertechnotes.substack.comLatest Issues
Claude Code Skills: Test the Trigger, Then the Output
How should you test a Claude Code skill that sometimes runs for the wrong request? Evaluate invocation separately from output quality. First ask whether the skill should have loaded; then check whether its result met the task’s acceptance c...
AI Content Workflows: Keep the Source Version with the Draft
How do you know whether an AI-generated draft still matches the source note it was based on? Keep the source version with the draft, then compare that version with the current source before release. A saved snapshot and a content digest mak...
AI Agent Memory: Use Exact Lookups for Exact Questions
Should an AI agent search document embeddings to answer an exact asset-ID question? If an authoritative structured record exists, use a constrained lookup against that record. Document retrieval can supply explanations, but a relevant-looki...
RAG Table Errors: Check the Headers Before the Model
Why can a RAG system retrieve the right page and still answer a table question incorrectly? The retrieved text may contain the numbers but lose the headers that explain them. Before changing the model, inspect whether the evidence supplied...
KV-Cache vs Speculative Decoding: Measure Before Tuning
Are KV-cache and speculative decoding two names for the same LLM optimisation? No. KV-cache reuses attention states for tokens already processed. Speculative decoding proposes future tokens and asks the target model to verify them. They can...
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Instructor of AI Agent classes | Programmer since 2010 | Blogging since 2007 | Helping working adults and students build practical AI tools | Exploring ethical AI writing, automation, and education.
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