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50ea2e lisa 2026-08-16 22:03:23
sd: add C08 reference (debugging & alpha testing) — 9 pages ported from C08-Reference-Godot; hub link Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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# Updating Evaluation Criteria
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*Your C4 evaluation matrix was written before you built anything. Level 5–6 of C8-2 is showing the criteria evolved **with** the project — and 7–8 is explaining why.*
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## The factors (VCAA)
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Every criterion must belong to one factor.
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**Efficiency** — how well the solution uses resources:
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- **Cost of data and file manipulation** — resources required to handle data operations
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- **Functionality** — features that align with user requirements, without unnecessary complexity
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- **Speed of processing** — how quickly the software performs and responds
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**Effectiveness** — how well the solution achieves its intended results: **accessibility · accuracy · attractiveness · clarity · communication of message · completeness · maintainability · readability · relevance · timeliness · usability**.
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## Three steps
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1. **Revisit your C4 criteria.** List them, organised by factor, and compare what you planned against what you actually built: technical discoveries, creative solutions, scope adjustments.
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2. **Revise with what development taught you.** Real examples of honest revisions:
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- *Speed of processing:* page loads within **4** seconds on the school network (revised from 2 — measured on real hardware)
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- *Usability:* login within **15** seconds on mobile (revised from 30 — users were faster than expected)
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- *Accessibility:* touch targets minimum **44 px** for tablets (**new** criterion — user testing revealed it)
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3. **Keep the reason beside each change.** A criterion that moved without a documented trigger (test result, user feedback, IT requirement) can't survive the viva's causal-reasoning gate.
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Loosening a target isn't failure — an unmeasured target is. The mark of a real evaluation criterion is that it changed when the evidence said it should.
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## Four levels of evaluation matrix
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| Level | What it adds |
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|---|---|
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| 1 — Basic | every FR/NFR rated 0–2 in a checklist |
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| 2 — Factor-based | criteria grouped under the efficiency/effectiveness factors above |
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| 3 — Prioritised | factor weights (e.g. Accuracy 30%, Maintainability 5%) reflecting *your* project's priorities |
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| 4 — Your own | mix, tweak or redesign — clear, systematic, meaningful |
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The full worked matrices for all four levels are in your class repo: `S-C08/C082-Evaluation-Matrices-Update.md`.