Hierarchical Multi-Label Dialog Act Recognition on Spanish Data
Table 17: Results achieved on the combination of all levels.
['[BOLD] Approach', '[BOLD] MR  [ITALIC] m', '[BOLD] MR  [ITALIC] s']
We can see that most of the conclusions drawn for the combination of Levels 1 and 2 can also be drawn in this case. Using the hierarchical approach we achieved an average of 92.34% exact match ratio, which is above the 89.70% reported by Martínez-Hinarejos et al. (p≈9.5e−44) and the 90.97% reported by Gambäck et al. However, while on the combination of the two top levels the result of the hierarchical approach was not statistically different from that reported by Gambäck et al. By approaching the task as a single-label classification problem, the exact match ratio is improved to 93.98% (p≈1.5e−22), once again confirming that the problem is simpler.