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National Council For Social Security Fund of China
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Question
calculate weighted difference and assigning names to it
Dear friends, I am working on one problem, it looks like this, a matrix xxx with n columns, the first row is the name of variabl...
environ 11 ans il y a | 1 réponse | 0
0
réponseQuestion
how to use cellfun to take relevant elements out of cell arrays
Dear Friends, I have a matrix of time series data,and I want to calculate the rolling zscore. Some columns start with NaNs, t...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
calculate YoY growth rate
Hi,friend, price2ret function is able to calculate the growth rate of two adjacent values, if it's monthly data, it can be v...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
how to calcuate mean with NaN
Dear Friend, There are two matrixs with the same size, there are some NaNs in each matrix. I want to calculate the mean of co...
plus de 12 ans il y a | 3 réponses | 0
3
réponseshow to get the last value of a cell
Hi, Walter, would you please give more information. my problem, I want to find zscores for 100 time series data points. but...
plus de 12 ans il y a | 0
| A accepté
Question
how to get the last value of a cell
Dear Friend, I generated a series of N by 1 cells with different lengths. I want to generate a new vector, each element of th...
plus de 12 ans il y a | 3 réponses | 0
3
réponsesQuestion
multivariate regression coefficients add up to one
Hi, friend, I am working on a constrained regression, of which I regress Y on several variables. But I need the sum of regre...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
convert monthly data from daily data series
Dear Friend, I have a time series of SP500 daily prices since 1950. I want to find out the monthly end prices, how can I handle...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
fill area with different shapes
Dear Friend, I plot a figure using "area" command, which translate a N by 4 matrix to a figure, where N means the date, 4 mea...
plus de 12 ans il y a | 1 réponse | 0
1
réponserolling optimization with nonlinear constraints
Thanks, friends, I tried again by correcting the syntax error, it works. thanks.
plus de 12 ans il y a | 0
rolling optimization with nonlinear constraints
Hi Alan, thanks for pointing out the error in nonlinear constraints, I tried, it shows that the problem lies in objective functi...
plus de 12 ans il y a | 0
Question
rolling optimization with nonlinear constraints
Hi,friends, I recently encountered one problem and tried many times without success, is there anyone who can give me some hints,...
plus de 12 ans il y a | 3 réponses | 0
3
réponsesQuestion
non linear optimization problem
Hi, I encountered one optimization question like this maximize R' *Log(w) subject to w' *cov*w<=0.1 and w>=0 ...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
linear time series with MA(1) residuals
Dear Friends, I want to run a time series linear regression with the form y(t)=beta*x(t)+e(t), where e(t) follows a MA(1) ...
plus de 13 ans il y a | 1 réponse | 0
