[word=to] [tag=VB] [tag=JJR] [word=models] [□]
[word=to] [tag=VB] [tag=JJR] [word=models] [□=□]
[word=to] [tag=VB] [tag=JJR] [word=models] [□ | □]
" We need to build better models of physical effects , but then you have to abstract them at the synthesis level , " said Pileggi .