Plot Top-k Rankings with Pairwise Preferences
Plot the posterior probability, per item, of being ranked among the top-k for each assessor. This plot is useful when the data take the form of pairwise preferences.
plot_top_k( model_fit, burnin = model_fit$burnin, k = 3, rel_widths = c(rep(1, model_fit$n_clusters), 10) )
model_fit |
An object of type |
burnin |
A numeric value specifying the number of iterations
to discard as burn-in. Defaults to |
k |
Integer specifying the k in top-k. |
rel_widths |
The relative widths of the plots of |
## Not run: # We use the example dataset with beach preferences. Se the documentation to # compute_mallows for how to assess the convergence of the algorithm # We need to save the augmented data, so setting this option to TRUE model_fit <- compute_mallows(preferences = beach_preferences, save_aug = TRUE) # We set burnin = 1000 model_fit$burnin <- 1000 # By default, the probability of being top-3 is plotted plot_top_k(model_fit) # We can also plot the probability of being top-5, for each item plot_top_k(model_fit, k = 5) # We get the underlying numbers with predict_top_k probs <- predict_top_k(model_fit) # To find all items ranked top-3 by assessors 1-3 with probability more than 80 %, # we do library(dplyr) probs %>% filter(assessor %in% 1:3, prob > 0.8) ## End(Not run)
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