曲线回归

Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.

利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度；对18年中植被生长季的开始、结束时间和长度进行一次线性拟合，分析了植被生长季的开始、结束日期和长度的线性变化趋势；基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度，并对这两种方法的监测结果作了比较，从而得到了较好的不同纬度区域1982～1999年植被生长季的变化趋势；基于曲线拟合了1982～1999年的不同空间位置的植被物候期，然后讨论了每年和多年平均的植被生长季的空间分异规律；最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系，不同纬度带的植被物候期与气候变化的相互关系，植被物候期与气候变化空间相互关系。

Both simulations and data analysis demonstrated that the random regression model with Legendre polynomial as submodels is more effective than the functional mapping with Logistic curve as submodel in mapping dynamic trait loci

模拟和实例分析结果都证明：以Legendre多项式为子模型的随机回归模型定位策略是有效的，优于用Logistic曲线为子模型的函数定位策略

The manipulation of sugar can divide the curve of pink wine alcohol fermentation density with the changes of time into two parts when the sugar content of raw material-grape is lower than 12%. The regression analysis results showed that quadrative equation and logarithmic equation can be used to describe changes of density with changes of time before and after replenishing sugar respectively.

当葡萄原料含糖量低于12%酒度要求时，加糖操作可将桃红葡萄酒酒精发酵密度随时间变化的曲线分为2段，用回归分析法分析结果表明，加糖前密度随时间的变化规律可用二次方程描述，加糖后密度随时间的变化规律可用对数方程描述。

The regression analysis confirmed that the plant′s growth patterns all fit a logistic curve.

实验期间，菹草生物量变化的回归分析表明，不同透明度下菹草的生长均符合逻辑斯谛曲线。

Stroke; Clinical study model; Study of syndrome; Curve Estimation ; Logistic Regression; Study of complexity; Unlinear science

中风病；临床研究模式；证候学研究；曲线参数估计； Logistic回归；复杂性研究；非线性科学

Consider singular growth curve model as follows : Y = ABC + E , where A , C are all known matrices, B is an unknown matrix of regression coefficients , Y is a matrix of observations and E =(1,(2),... is matrix of random errors .

考虑奇异增长曲线模型：Y=ABC+E，其中A、C均为已知矩阵，B是未知回归系数阵，Y为观测资料阵，E=ε_((1)…ε_(n′为随机误差阵，假定Eε_(iε_(i′=∑，i=1，2…n，Eε_(iε_(j′=0，i≠j，这里∑≥0。

Consider singular growth curve model as follows : Y = ABC + E , where A , C are all known matrices, B is an unknown matrix of regression coefficients , Y is a matrix of observations and E =(1,(2),...

中文摘要：考虑奇异增长曲线模型：Y=ABC+E，其中A、C均为已知矩阵，B是未知回归系数阵，Y为观测资料阵，E=ε_((1)…ε_(n′为随机误差阵，假定Eε_(iε_(i′=∑，i=1，2…n，Eε_(iε_(j′=0，i≠j，这里∑≥0。

A method for estimating the curves and their confidence bounds is developed by a linear regression technique and a maximum likelihood principle.

应用线性回归技术和极大似然法原理，给出了概率曲线及其置信限的估计方法。

Determine with atomic spectrophotometer the plumbic content in sample of lacteal precious capsule, decide look, standard to lay in fluid to make up from sample metage, sample according to mathematical model, equation of regression of standard curve linear and repeat the calculation that measures 5 respects to undertake uncertainty of measurement.

用原子分光光度计测定乳珍胶囊样品中的铅含量，根据数学模型从样品称量、样品定容、标准储备液配制、标准曲线线性回归方程和重复测量5个方面进行测量不确定度的计算。

Mainfactors are as follows: standard solution、 regressive curve、 parallel experiment of sample、 diacetyl monxime's reagent colorimetic method、 spectrophotometer、 sampling , etc .

影响测定结果的分量主要有：标准溶液、回归曲线、样品平行试验、二乙酰一肟分光光度法、分光光度计、取样等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。