Finally, our combined model which uses both Latent and Explicit structure performs the best with a strong improvement of 1.08 points in ROUGE-L over our base pointer-generator model and 0.6 points in ROUGE-1.  
 Question: By how much they improve over the previous state-of-the-art?
1.08 points in ROUGE-L over our base pointer-generator model  0.6 points in ROUGE-1