Analyzing reviews of 'Harry Potter and the Methods of Rationality'

by gwern 1 min read3rd Nov 201221 comments


The unprecedented gap in Methods of Rationality updates prompts musing about whether readership is increasing enough & what statistics one would use; I write code to download reviews, clean it, parse it, load into R, summarize the data & depict it graphically, run linear regression on a subset & all reviews, note the poor fit, develop a quadratic fit instead, and use it to predict future review quantities.

Then, I run a similar analysis on a competing fanfiction to find out when they will have equal total review-counts. A try at logarithmic fits fails; fitting a linear model to the previous 100 days of _MoR_ and the competitor works much better, and they predict a convergence in <5 years.

Master version: