StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Rating Stats for

Jonathan Chang

Rating
1557.99 (5,989th)
Reputation
17,618 (7,948th)
Page: 1 2
Title Δ
lda.collapsed.gibbs.sampler model and top words ranking 0.00
Output of lda.collapsed.gibbs.sampler command from R lda package 0.00
lda.collapsed.gibbs.sampler initial not working in R 0.00
Scoping and functions in R 2.11.1 : What's going wrong? +2.82
R (statistical) scoping error using transformBy(), part of the doBy... -0.49
R: Adding zeroes after old zeroes in a vector? +3.43
redefine length.character in R -0.68
Extract "jagged" column from R data.frame/matrix using ve... +3.40
Creation of a specific vector without loop or recursion in R +3.39
Rbind different number of columns -0.77
Searching R help for "for" and "repeat" loop(s)... 0.00
R: aggregate columns of a data.frame -1.43
Including variables in expression call in R +3.22
Problem naming array dimensions 0.00
R error promise already under evaluation when using subset in funct... 0.00
R: optimal way of computing the "product" of two vectors +4.00
Calculating all distances between one point and a group of points e... +3.96
Irrelevant legend information in ggplot2 0.00
How can I find out how many rows of a matrix satisfy a rather compl... +3.73
select only rows if its value in a particular column is less than i... +3.72
select rows with largest value of variable within a group in r -2.65
improve my code for collapsing a list of data.frames +3.97
R substitute on expression with assignment +0.49
as.data.frame of table() to summarize frequencies -1.35
R: How to write out a data.frame so that I can paste it into SO for... -3.94
R counting the occurrences of similar rows of data frame +3.66
How to plot data grouped by a factor, but not as a boxplot +3.54
class "By" into dataframe in R 0.00
R optimization: How can I avoid a for loop in this situation? +0.95
How can I get the complement of vector y in vector x +0.41
Removing object from parent environment using rm() 0.00
Adding multiple vectors in R -4.33
Reshape data frame to convert factors into columns in R -3.49
Reorder levels of a data frame without changing order of values +3.73
Plotting axes with different scales for one data set in R -3.66
List of ggplot2 theme options? -4.28
Percentile for Each Observation w/r/t Grouping Variable +3.77
substitute, eval, bquote, do.call ... some guidance for substitutin... +1.94
change look-and-feel of plot to resemble hist -4.18
Using outer() with predict() +3.65
Inner Sort with R - Once by Numeric then by Alpha (V2) 0.00
What is the equivalent of var_dump() in r? +3.97
Memory Usage in Foreach Function +4.30
Given a time series for many unique IDs, I need the top 100 deltas... +0.54
Plot Histogram with Points Instead of Bars +2.04
multiple transform on df with plyr 0.00
Change specific column values in R +2.36
Problem storing plot objects in a list in R +4.47
from absolute numbers to proportion in two level data (R! SAC? plyr?) +4.17
Length doesn't work in by() aggregation? +4.16