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Rating Stats for

Zheyuan Li

Rating
1705.91 (128th)

Reputation
49,979 (2,002nd)

Page: 1 ... 12 13 14 15 16 ... 24

Title	Δ
Delete, drop, kill ALL factor levels from Dataframe	-0.96
Finding variance of a subset of data from a scatterplot	0.00
Ridge regression with `glmnet` gives different coefficients than wh...	+1.29
`nls` fails to estimate parameters of my model	+1.31
Writing a Householder QR factorization function in R code	0.00
Bad plot when plotting 95% confidence interval of linear model pred...	+1.32
Conversion between covariance matrix and correlation matrix	+0.68
How to find the maximum value within a loop in R	0.00
Return a function object with arguments partially filled	0.00
Out of memory when using `outer` in solving my big normal equation...	0.00
Identify and replace all sum-to-zero rows in a list of binary matri...	0.00
Weighted rowSums of a matrix	0.00
finding n-1 matrix elements in R	0.00
Computing geometric series in R	+0.27
"exclude" argument in `factor()` does not work	0.00
R - Calculate Test MSE given a trained model from a training set an...	0.00
Replacing matrix elements indexed by another matrix	0.00
show all the values in x axes of a plot	0.00
High (or very high) order polynomial regression in R (or alternativ...	0.00
How to set contrasts for my variable in regression analysis with R?	+0.35
Round down a numeric	+1.81
Create a matrix of dummy variables from my data frame; use `NA` for...	0.00
lapply: producing several 3D scatter plots with different titles	0.00
`probemod::pickapoint` fails when reversing moderator and IV for a...	0.00
How to fit a survival model for each quartile of a variable?	+1.53
Applying `ar` (autoregressive model) for my data frame using `lappl...	0.00
How do you isolate the digits following a decimal in R?	-0.82
Custom Link function works for GLM but not mgcv GAM	0.00
R user interaction when choosing model	0.00
How to interpolate those data with a polynomial?	0.00
`image` is not displaying my matrix in the range I specified	0.00
`sapply` is successful for "zoo" object but not "xts...	0.00
Fitting linear model / ANOVA by group	0.00
Matrix multiplication over three lists of matrices using apply() in...	+0.95
R: populate a vector incrementally	-1.94
How to export all coefficients of a penlized regression model from...	0.00
Apply Function on all rows to get a matrix output in R	-1.07
R optim() L-BFGS-B needs finite values of 'fn' - Weibull	-2.64
Compute expectation of a 1D truncated distribution (say log-normal)...	+1.37
plot regression line in R	+0.34
Organize my results in a table like a correlation matrix	+1.23
Rolling sum product by column	-0.95
how to let a matrix minus vector by row rather than by column	+1.37
lme4::glmer.nb function produces "Error in family$family : $ o...	0.00
Prevent element renaming when unlist	+1.56
How to perform a non linear regression for my data	+1.41
Compute digit-sums in specific columns of a data frame	+0.38
lm() on row of data.frame ~ colnames	0.00
R:How can I fill color in the gray curve?	0.00
Fitting fractions of multivariate polynomial	-0.14