Chunking for RAG quality
Anticipate failure modes
Name failures by their mechanism in chunking on the employee handbook assistant, not with a generic hallucination label.
1Learn the idea
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Response design
For each severe chunking failure on the employee handbook assistant, define stop condition, safe state, owner, and lasting prevention. Rollback only works if prior prompts, indexes, and models remain available. “Send to a human” needs queue capacity and context—not just a button name.
Run one tabletop on the employee handbook assistant for chunking: inject a defect, verify detection, contain, recover, and keep the blameless trace.
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Make it operational
After the tabletop, store the injected chunking defect for the employee handbook assistant as a regression fixture. If the same failure later reaches users silently, your detection story was aspirational. Detection without a fixture tends to rot for chunking.
Also pin one numeric memory from this chunking chapter: If exceptions live 120 tokens after a rule and chunks are 80 tokens with no overlap, retrieval can return the rule without the exception—measurable as citation-support failures. That number is not decoration; it is a template for how claims about chunking on the employee handbook assistant should look in design docs. Scoped specifically to chunking / employee handbook assistant / failure-modes.
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Common mix-ups
People confuse chunking with neighboring buzzwords when debugging the employee handbook assistant. Before changing prompts, ask whether the broken stage was evidence gathering, the chunking judgment itself, validation, or the product action. Fixing the wrong stage creates folklore (“we tried chunking and it failed”) that blocks the next team on the employee handbook assistant. Scoped specifically to chunking / employee handbook assistant / failure-modes.
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Rehearsal (chunking-for-rag/failure-modes)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to chunking for rag rather than generic AI advice.
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Rehearsal (chunking-for-rag/failure-modes)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to chunking for rag rather than generic AI advice.
Read
Rehearsal (chunking-for-rag/failure-modes)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to chunking for rag rather than generic AI advice.
Read
Rehearsal (chunking-for-rag/failure-modes)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to chunking for rag rather than generic AI advice.
Go deeper
Before you start
Why this matters
Invent an incident for the employee handbook assistant involving chunking. What earliest signal should fire before users complain?
Rule/exception split
Detect with answers omit ‘except contractors’. Respond by keep exception with rule; eval those queries.
Table shredding
Detect with row without column headers. Respond by specialize table chunking.
Duplicate overlap flood
Detect with top-k is the same paragraph thrice. Respond by dedupe by fingerprint.
Missing heading path
Detect with chunk unreadable alone. Respond by store breadcrumb metadata.
In the wild
See how this idea shows up as a product and a company — then come back to the lesson. Skills transfer across vendors.
Related lessons
Check your understanding
Page assessment
Answer from memory. Completion is saved from this evidence, not from opening the next page.
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