Figure 3:
Sentence ranking via two-step sampling. In this toy example, each sentence (s1 to s5) is assigned to its nearest code (k = 1, 2, 3), as shown by thick purple arrows. During cluster sampling, the probability of sampling a code (top right; shown as blue bars) is proportional to the number of assignments it receives. For every sampled code, we perform sentence sampling; sentences are sampled, with replacement, according to their proximity to the code’s encoding. Samples from codes 1 and 3 are shown in black and red, respectively.
