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47 行
1.1 KiB
47 行
1.1 KiB
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using UnityEngine;
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namespace AxelF {
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public struct WeightedDecay {
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const float restoreSpeed = 0.05f;
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const float redrawPenalty = 1f;
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public float[] weights;
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public float weightSum;
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public int count {
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get { return weights != null ? weights.Length : 0; }
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set {
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if (weights == null || weights.Length != value) {
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weights = new float[value];
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for (int i = 0; i < value; ++i)
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weights[i] = 1f;
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weightSum = value;
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}
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}
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}
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public int Draw(float q, int n) {
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n = Mathf.Max(0, n);
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count = n;
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float v = Mathf.Clamp01(q) * weightSum;
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int i, j;
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for (i = 0; i < n - 1 && v >= weights[i]; ++i)
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v -= weights[i];
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if (i >= 0 && i < weights.Length)
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weights[i] = Mathf.Max(weights[i] - redrawPenalty, 0f);
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weightSum = 0f;
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for (j = 0; j < n; ++j) {
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weights[j] = Mathf.Min(weights[j] + restoreSpeed, 1f);
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weightSum += weights[j];
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}
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return i;
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}
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}
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} // AxelF
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