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flykhan
2026-05-03 11:47:30 +08:00
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<!-- Step 1: circle -->
<text x="40" y="14" text-anchor="middle" fill="#333" font-size="10" font-weight="bold">Input</text>
<circle cx="40" cy="60" r="30" fill="#3498db" fill-opacity="0.15" stroke="#3498db" stroke-width="1.5"/>
<!-- Arrow + V^T -->
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<text x="92" y="52" fill="#9b59b6" font-size="10" font-weight="bold">V&#x1D40;</text>
<!-- Step 2: rotated circle (still circle) -->
<text x="140" y="14" text-anchor="middle" fill="#333" font-size="10" font-weight="bold">Rotate</text>
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<text x="192" y="52" fill="#e74c3c" font-size="10" font-weight="bold">Σ</text>
<!-- Step 3: ellipse (stretched) -->
<text x="260" y="14" text-anchor="middle" fill="#333" font-size="10" font-weight="bold">Scale</text>
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<text x="285" y="53" fill="#e74c3c" font-size="9">σ₁</text>
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<text x="220" y="108" text-anchor="middle" fill="#666" font-size="10">A = UΣV&#x1D40;: rotate → scale → rotate</text>
</svg>
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