It works like this. The uh , um  I mean. The first thing we get is that  already the intention is sort of t They tried to figure out the intention , right ? simply by parsing it. And this um  m won't differentiate between all modes , yeah ? but at least it 'll tell us " OK here we have something that  somebody that wants to go someplace , now it 's up for us to figure out what kind of going there is  is   is happening , and um , if the discourse takes a couple of turns before everything  all the information is needed , what happens is you know the parser parses it and then it 's handed on to the discourse history which is , um o one of the most elaborate  elaborate modules. It 's  it 's actually the  the whole memory of the entire system , that knows what  wh who said what , which was  what was presented. It helps an an anaphora resolution and it  and it fills in all the structures that are omitted , so ,  um , because you say " OK ,  how can I get to the castle ? " Oh , how  how much is it ? " and um " yeah I would like uh  um  to g let 's do it " and so forth. So even without an a ana  anaphora somebody has to make sure that information we had earlier on is still here.
Mm - hmm.
Because not every module keeps a memory of everything that happened. so  whenever the uh , um person is not actually rejecting what happened before , so as in " No I really don't want to see that movie. I 'd rather stay home and watch TV " um  What movie was selected in what cinema in what town is  is going to be sort of added into the disc into the representations every di at each dialogue step , by the discourse model  discourse  model , Yeah , that 's what it 's called. and , um , it does some help in the anaphora resolution and it also helps in coordinating the gesture screen issues. So a person pointing to something on the screen , you know , the discourse model actually stores what was presented at what location on the s on the screen
Hmm.