Research on Vocabulary Sizes and Codebook Universality

Figure 1

The relationship between classification rates and vocabulary sizes, with 𝑘 optimized and 𝑘=3.

(a) Event-8 with 𝑘 optimized

(b) Event-8 with 𝑘=3

(c) Scene-15 with 𝑘 optimized

(d) Scene-15 with 𝑘=3

(e) Caltech-101 with 𝑘 optimized

(f) Caltech-101 with 𝑘=3