Quiz with answers — Gated DeltaNet and selective forgetting
Answer all eight questions, then check the score. Open only the explanations needed for remediation.
1. Solve the worked-case variant: Increase α from 0.8 to 0.96 for an initial trace of 1 with no new write. Calculate the next two states and compare retention.
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D. With α=0.8 the trace becomes 0.8 then 0.64. With α=0.96 it becomes 0.96 then 0.9216. Retention rises sharply, but α near 1 also slows forgetting of stale information. The correct answer executes the requested change and gives a checkable result; the other texts do not close this calculation or trace.
2. Which causal order correctly connects the first three stages of “Gated DeltaNet and selective forgetting”?
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B. Why forget → Decay gate → Write gate The chain follows the taught progression; reversing stages consumes a representation or state before it is produced.
3. If “Write gate” is removed, which diagnostic method is defensible?
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C. Keep the same input, predict the first output that depends on “Write gate,” then compare the before/after trace. One intervention and a prior prediction make the delta attributable to the removed mechanism.
4. Which verdict respects this session’s validity boundary?
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A. The Mamba parallel is conceptual. It does not imply Gated DeltaNet and Mamba are interchangeable. The correct answer bounds the conclusion; the others turn a local relation into a global guarantee.
5. Which evidence best matches the stated status of “Gated DeltaNet and selective forgetting”?
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D. Established: the delta rule, exponential decay, and the half-lives computed here. Pedagogical: the α, β values and the 2×2 matrices of the trace. Reported: the exact gate choices of named models. Product or mechanism evidence must remain attributed and measured; availability and completion do not prove value.
6. When should a simpler baseline be preferred to “Effective capacity”?
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B. When a controlled test shows equivalent quality with lower memory, latency, or complexity. The choice depends on a measured trade-off on the real workload, not novelty or one isolated metric.
7. A learner gets the right result but cannot explain “Decay gate.” Which remediation is most useful?
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C. Rebuild the first missing transformation, label its inputs and outputs, then test a neighboring case. The remediation targets the first causal break and then requires transfer instead of rewarding a guessed result.
8. Which submission actually demonstrates the outcome “Compare with state-space principles.”?
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A. A trace with starting data, transformations, observed result, boundary, and next experiment. The correct submission makes the reasoning reproducible and the verdict revisable by future measurement.