KCAE.USE:4 - Solution

KCAE.USE:4.1 - Recover the receiving operation

Observe or reconstruct one work episode. Name who must obtain what result, what they can already do, which sources and tools are available, and which error would change the next action. Write a success condition in the vocabulary of that work: “The analyst obtains the governing retry condition and the missing destination fact before suggesting automation,” rather than “The top result is relevant.” Preserve a different use when its success condition changes, such as explaining which rule was available during an old incident.

Separate the contribution supplied by access from the later domain operation. An access system may return a governing clause and comparison evidence; a qualified domain engineer still approves an equipment change. If the user expects the system to perform that approval, the arrangement needs the relevant capability and authority, not merely a better source link. Establish which receiving results are to be supplied by people, software or a coordinated combination.

KCAE.USE:4.2 - Establish the source and authority boundary

For every source class that can change this use, obtain its membership, edition rule, applicable authority and access conditions. Ask the responsible owner what makes a source current for this decision and what happens when sources disagree. Keep a record precise enough to implement that decision: for example, “Published English administrator manual governs supported automation; the localization assists interpretation; release notes override the named clauses from their effective date; the installed destination version comes from the configuration service.” This is a supplied organizational rule in the example, not a universal hierarchy of document types.

Distinguish source unavailability, lack of permission, extraction failure and a source known to contain no relevant passage after an adequate bounded inspection. They imply different next moves. A provider’s inability to expose historical editions limits historical reproducibility even if it rejects a stale snapshot identifier. When authority is disputed, obtain the owner’s decision or return competing conditional readings; do not resolve the dispute by upload date.

Define the data boundary for each route. Public source text, a private query, case records, assessor prompts, logs, caches and recipient messages are separate flows. A remote model may be permitted for a public manual while the event description must stay local. Construct a permitted projection or use a local alternative. Removing a name does not by itself establish that sensitive meaning has been removed; have the responsible data owner settle the permissible projection at the grain the use requires.

KCAE.USE:4.3 - Turn anticipated use into a workload

Sample real requests and failures when available. Include known-name lookup, uncertain vocabulary, cross-document synthesis, historical use, no useful advice and source changes. Record approximate corpus size and growth, request rate, update rate, language/format distribution, acceptable latency, required source return and recipient preparation. Distinguish observations from forecasts. If no log exists, construct explicit scenarios and treat the workload as a design assumption to revisit after use.

Select a finite horizon and identify who bears each cost. Build and extraction costs occur before requests; maintenance follows changes; discovery and reading occur per question; interpretation and action burden fall on the recipient. Retention and notification add separate costs. Shared work is counted once, while costs displaced to a colleague remain costs. KCAE.EVAL supplies the comparison method; the workload supplies its population and use conditions.

KCAE.USE:4.4 - Compare complete feasible arrangements

Construct at least the credible existing or simple arrangement and the proposed alternative at the same receiving result. A small dossier can use full reading with a cache. A large evolving corpus can use full-text plus semantic retrieval and independent block inspection. A structured codebase can use qualified symbol navigation. Include what each needs for source preparation, assessment, delivery, updates and recovery. An unsupported capability such as history deletion makes an arrangement unavailable until that capability is supplied.

Eliminate a choice that violates a hard condition before comparing cheaper variants. Then compare quality and cost by workload segment. An untested semantic route can be a reasonable initial design hypothesis for frequent cross-language questions; it does not need an artificial history of lexical failures to be considered. Equally, a graph is not earned by its name: identify the relations its intended queries actually require and the cost of maintaining them.

Use a break-even calculation only for commensurable quantities. Suppose A costs 180 engineering minutes to prepare, 8 minutes per source change and 6 minutes of recurring human effort per request. B costs 780 minutes, 28 minutes per change and 2 minutes per request. For N requests and U changes, B uses less of this measured/estimated effort when 4N exceeds 600 + 20U. With U = 10, that is N greater than 200. These invented values omit model charges and elapsed delay, which remain separate constraints. Neither arrangement is acceptable solely because its effort total is lower; it must supply the required result.

KCAE.USE:4.5 - Return the design basis and its reopen conditions

The result identifies the chosen or proposed arrangement, first usable result, alternative retained for comparison, unknown premises and observations that would change the choice. Feed source requirements to KCAE.SOURCE, discovery requirements to KCAE.INDEX, delivery capability to KCAE.DELIVER and adoption questions to KCAE.EVAL. A single concise account can carry this basis; no mandatory per-query form follows.