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本算法用最小二乘法依据指定的M个基函数及N个已知数据进行曲线拟和 。 本算法用指数平滑法预测数据-the algorithm using the least-squares method based on the designated function of M and N-known data and the curve-fitting. The algorithm used to predict exponential smoothing data
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Origin 拟合曲线教程
Contents
1. ORIGIN BASIC FUNCTIONS
2. CHROMATOGRAPHY FUNCTIONS
3. EXPONENTIAL FUNCTIONS
4. GROWTH/SIGMOIDAL
5. HYPERBOLA FUNCTIONS
6. LOGARITHM FUNCTIONS
7. PEAK FUNCTIONS93
8. PHARMACOLOGY FUNCTIONS
9. POWER FUNC
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函数逼近与函数拟合实验,分别根据数据拟合了二次函数和指数函数,并且包含excel和实验报告-Function approximation and fitting experiment data were fitted according to a quadratic function and the exponential function, and the report contains excel and experimental
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基于MATLAB的组合模型
在港口吞吐量预测中的应用
以某港1998--2007年集装箱吞吐量为实测数据,建立其集装箱吞吐量的灰色理论、三次指数平滑、三次多项式
等预测模型,在MATLAB下,对比该港集装箱吞吐量各模型预测拟合值与实际值的差异。分析了差异产生的原因及其单一预
测模型的局限性,提出了港口集装箱吞吐量组合预测法。其预测误差明显低于其它单模型。运用组合预测模型.可以降低误
差。提高预测精度。-A combination of MATLAB-based model i
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分别用双曲线函数和指数函数拟合曲线,并进行误差计算,并能绘制曲线-Respectively hyperbolic function and the exponential fitting curve, and make error calculation, and can draw the curve of
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数值计算,用最小二乘法实现线性拟合,指数拟合,三次拟合并会绘制图线,计算相应的误差值-Numerical calculation, with the least squares method of linear fitting, exponential fitting, three draws graph lines to be combined to calculate the corresponding error
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曲线拟合法:本方法分别利用一元线性函数、对数函数、指数函数和抛物线函数对数据拟合,取拟合优度判定系数最大者作为预测模型,得出预测值及预测区间(置信度为0.95)-Curve fitting: This method is the use of a linear function, respectively, logarithmic, exponential and parabolic functions for data fitting, goodness of fit to take the
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利用C语言实现最小二乘法对给定点指数函数曲线拟合-Using C language to achieve the least squares method to the fixed-point exponential function curve fitting
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提供了拉格朗日插值 一次多项式拟合 指数拟合三种计算方式。是使用picturebox作图的好例子,其中test.xls是一个4点的数据文件-Provides three method of calculation, there are the Lagrange interpolation polynomial fitting exponential fitting . Is a good example of using picturebox drawing, test.xls is a 4 p
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推求一个解析函数y=f(x)使其通过或近似通过有限序列的资料点(xi,yi),通常用多项式函数通过最小二乘法求得此拟合函数。-exponential function:Y=aebX(12.29),lograrithmic function:Y=a+blnX(X>0)
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随机数发生器
此功能会产生连续的值(功法的文章中讨论的五个分布随机分布,指数,对数正态分布,拉伸指数,截止功法)。使用信息包含在文件类型的帮助randht在MATLAB提示符更多信息。
幂律分布拟合
这项功能同时实现的离散和连续的最大似然估计拟合幂律分布的数据,以及善良的合适的方法来估计缩放区域较低的截止。使用信息包含在文件类型的帮助plfit在MATLAB提示符更多信息。-This function is a random number generator will produce
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风速剖面指数拟合的matlab程序,可获得风剖面指数。-Winds sectional exponential fitting matlab program, available wind profile exponent.
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数值计算方面的函数曲线拟合函数和接口,多项式,高斯,指数等拟合-numerical Calculation of function curve fitting functions and interfaces, Polynomial, Gaussian and exponential fitting
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数学建模的常用数据,非常经典,编程开发中经常使用。欢迎下载(he emphasis of this book lies on the teaching of mathematical modeling rather than simply presenting models. To this end the book starts with the simple discrete exponential growth model as a building block, and successi
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