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Zheyuan Li

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1705.91 (128th) 		Reputation
49,979 (2,002nd)
Page: 1 ... 13 14 15 16 17 ... 24
Title Δ
some misunderstanding with cut() function 0.00
How to calculate variance of least squares estimator using QR decom... 0.00
Obtain standardised residuals and "Residual v.s. Fitted"... +1.18
Obtain standardised residuals and "Residual v.s. Fitted"... -0.82
R: how to assign A[B[, j], j] without for-loop +1.00
Get percentage of people for each pair -1.70
Extracts incomplete cases from a data set in r 0.00
Adding a random number of days to dates via some function 0.00
Mean and standard deviation in normal distribution and log-normal d... 0.00
`plot.density` extends "xlim" beyond the range of my data... 0.00
Prediction of 'mlm' linear model object from `lm()` 0.00
Value Present in a Range or Not +1.42
Multiple regressions with loop in loop in R 0.00
R - Getting Column of Dataframe from String +0.36
Fitting a linear regression model by group gives NaN p-values 0.00
How to compute diag(X %*% solve(A) %*% t(X)) efficiently without ta... 0.00
R: any faster R function than "tcrossprod" for symmetric... 0.00
I cannot understand how to plot points instead of row numbers using... 0.00
Boxplot: reordering mean values +0.40
R code for repeating value into column +0.37
Fill missing date-time values in output vector 0.00
Query to find minimum value in a matrix in R +0.84
Creating a shared object from C code for R 0.00
R linear model (lm) predict function with one single array 0.00
How do I convert an array to a wide data frame in R? +1.44
R: Specifying a dataframe argument in a function 0.00
Predict function in R 0.00
Logistic regression plot in R gives a straight line instead of an S... 0.00
R: element-wise matrix division 0.00
What went wrong when I'm creating a new variable? -0.14
R plotting integral 0.00
How to vectorize expanding a compressed sparse matrix from vector o... -0.14
natural cubic spline regression with R +0.37
Error with class(charactervector) <- "Date" +0.34
Piecewise regression with a quadratic polynomial and a straight lin... +2.00
Piecewise regression with a quadratic polynomial and a straight lin... -1.33
Eigenvector Order in R 0.00
How to get r.squared for each regression? -1.29
Is there a straight forward way to exchange columns in R? 0.00
vector specification to "col", "lwd" and "... +0.37
Extract and calculate frequency of occurrence in column using R -1.96
How to set the default language of date in R 0.00
linear model with `lm`: how to get prediction variance of sum of pr... 0.00
error in reading a csv file 0.00
Generating Random Data using Replicate 0.00
GLMNET prediction with intercept +0.38
Normalize data in R data.frame column 0.00
Extracting Uncommon values from 2 data frames in R +1.21
tranform data frame with missing dates into time series 0.00
R: why am I not getting the function to return the vector as intend... +1.52