Table 8.

Ablation experiment results analysis.

Removed module	Motion accuracy degradation (%) ↑	Semantic fidelity degradation (%) ↑	Temporal stability degradation (%) ↑	Overall performance impact (%) ↑
Knowledge graph integration	31.7 ± 3.8	46.2 ± 4.3	28.4 ± 3.5	35.4 ± 3.9
Cross-modal attention	24.5 ± 3.2	29.3 ± 3.8	18.9 ± 2.7	24.2 ± 3.2
Temporal constraint mechanism	19.6 ± 2.8	12.8 ± 2.4	36.5 ± 4.1	23.0 ± 3.1
Knowledge-guided sampling	17.3 ± 2.5	27.4 ± 3.5	14.6 ± 2.3	19.8 ± 2.8
Multi-level discriminator	14.2 ± 2.1	18.6 ± 2.7	11.8 ± 1.9	14.9 ± 2.2