2025-06-04 09:29:37 +00:00
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#ifndef LOWESS_SMOOTHER_H
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#define LOWESS_SMOOTHER_H
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#include <vector>
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#include <algorithm>
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#include <cmath>
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#include <stdexcept>
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2025-06-27 09:22:07 +00:00
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// lowess
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2025-06-04 09:29:37 +00:00
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namespace Lowess {
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// 配置参数结构体
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struct Config {
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double smoothingFactor = 0.25;
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int robustnessIterations = 3;
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};
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// 验证参数有效性
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void validateConfig(const Config& config);
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// 三次权重函数
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double weightFunction(double x);
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// 计算中位数绝对偏差
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double medianAbsoluteDeviation(const std::vector<double>& residuals);
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// 计算带宽
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std::vector<double> computeBandwidths(const std::vector<double>& x, double smoothingFactor);
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// 核心平滑函数
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std::vector<double> smooth(
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const std::vector<double>& x,
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const std::vector<double>& y,
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const Config& config = Config()
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);
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} // namespace Lowess
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#endif // LOWESS_SMOOTHER_H
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