Grad E: Um so this might be What next ?
Professor B: Well you tell me , so in terms of the uh planner what 's what 's a good one to do ?
Grad E: Well let 's th this go there or not I think is a good one .
Professor B: Uh
Grad E: Is a very basic one . So what makes things more likely that Professor B: Well the fir see the first thing is , getting back to thing we left out of the other is the actual discourse .
Grad E: So
Professor B: So Keith this is gonna get into your world because uh we 're gonna want to know you know , which constructions indicate various of these properties
Grad A: Mm - hmm . Mm - hmm .
Professor B: s and so I I don't yet know how to do this , I guess we 're gonna wind up pulling out uh discourse properties like we have object properties and we don't know what they are yet .
Grad A: Mm - hmm .
Professor B: So that that the Go - there decision will have a node from uh discourse , and I guess why don't we just stick a discourse thing up there to be as a placeholder for
Grad E: We we also had discourse features of course for the endpoint .
Professor B: Of of course .
Grad E: Identified that
Professor B: Yeah .
Grad E: and so again re that 's completely correct , we have the user model , the situation model here , we don't have the discourse model here yet . Much the same way as we didn't we don't have the ontology here .
Professor B: Well the ontology we sort of said we would pull these various kinds of properties from the ontology like exhibiting , selling , and so forth .
Grad E: Really .
Professor B: So in some sense it 's it 's there .
Grad E: Mm - hmm .
Professor B: But the discourse we don't have it represented at all yet .
Grad E: Yeah . Um This be specific for second year ? Um And and we probably will have uh something like a discourse for endpoint .
Professor B: But if we do it 'll have the three values .
Grad E: Hmm ?
Professor B: It 'll have the EVA values if if we have it .
Grad E: Yeah . Yeah . OK just for starters and here discourse um
Professor B: For Go - there , probably is true and false , let 's say . That 's what we talked about .
Grad E: um well , I think um we 're looking at the the little data that we have , so people say how do I get to the castle and this usually means they wanna go there .
Grad A: Mm - hmm .
Grad E: So this should sort of push it in one direction
Professor B: Right .
Grad E: however people also sometimes say how do I get there in order to find out how to get there without wanting to go there .
Professor B: Mm - hmm .
Grad E: And sometimes um people say where is it
Grad A: Mm - hmm .
Grad E: because they wanna know where it is but in most cases they probably
Professor B: Yeah , but that doesn't change the fact that you 're you want these two values .
Grad E: Oh yeah , true . So this is sort of some external thing that takes all the discourse stuff and then says here it 's either yep , yay , A , or nay . Yeah . OK ?
Professor B: And they 'll be a y uh , a user Go - there and maybe that 's all , I don't know .
Grad D: Situation Go - there , I mean , because it 's whether it 's open or not .
Grad E: Mm - hmm .
Professor B: OK , good .
Grad D: That definitely interes
Professor B: Yep .
Grad D: But that now that kind of um what 's the word
Grad A: Hmm .
Grad D: um the that interacts with the uh EVA thing if they just wanna view it then it 's fine to go there when it 's closed whereas if they want to um
Professor B: Right .
Grad D: so
Professor B: Right , so that 's that 's where it starts getting to be uh uh essentially more interesting , so what uh Bhaskara says which is completely right is if you know that they 're only going to view it then it doesn't matter whether it 's closed or not
Grad A: Mm - hmm .
Professor B: in terms of uh uh you know , whether whether you wanna go there .
Grad D: The time of day ,
Grad A: Mm - hmm .
Grad D: right I well , right .
Grad C: It does matter though if there 's like a strike or riot or something .
Professor B: Absolutely there are other situational things that do matter .
Grad D: Right . So yeah , that 's what I said just having one situational node may not be enough because this that node by itself wouldn't distinguish
Professor B: Well i i it can have di various values . Yeah , but we eh you you 're right it might not be enough .
Grad D: Yeah , I mean , see I 'm I 'm thinking that any node that begins with " Go - there " is either gonna be true or false .
Grad A: Well , what Whoops .
Professor B: Yeah .
Grad A: Right .
Professor B: Ah . I see that could be .
Grad A: Also , that node , I mean the Go - there s S node would just be fed by separate ones for
Grad E: Mm - hmm .
Grad A: you know , there 's different things , the strikes and the
Professor B: Could be . Yeah . N
Grad D: Like situation traffic and so on .
Grad A: Yeah , the time of day .
Professor B: Yeah . Yeah . So so now the other thing that Bhaskara eh pointed out is what this says is that uh there sh should be a link , and this is where things are gonna get very messy from the endpoint uh decision
Grad D: I guess the final
Professor B: maybe the t they 're final re and , I guess the very bottom endpoint decision uh to the Go - there node . And I don't worry about layout ,
Grad D: Yeah .
Professor B: I mean then we 'll go we 'll go nuts but
Grad D: Mmm .
Grad E: Mm - hmm .
Grad D: Maybe we could um have intermediate node that just the Endpoint and the Go - there S node sort of fed into ?
Professor B: Could be , yeah .
Grad D: Right . Because that 's what we , I mean that 's why this situation comes up .
Professor B: Yeah . Well the Go - there , actually the Endpoint node could feed feed into the Go - there S That 's right ,
Grad D: Yeah , right .
Professor B: so the Endpoint node ,
Grad E: Mm - hmm .
Professor B: make that up t t to the Go - there then
Grad E: Yeah .
Professor B: and again we 'll have to do layout at some point , but something like that . Now it 's gonna be important not to have loops by the way . Uh really important in in the belief worl net world not to have loops
Grad E: I was just gonna
Professor B: uh
Grad D: Yes .
Grad E: How long does it take you to to compute uh
Professor B: No it 's much worse than that . It if i loo it it it it it 's not def i it 's not well defined if you 're there are loops ,
Grad D: It things don't converge , yeah .
Grad E: uh R recursive action ?
Professor B: you just you have to there are all sorts of ways of breaking it up so that there isn't uh OK .
Grad E: Uh but this isn't , this is this line is just coming from over here .
Grad D: Yeah .
Professor B: Yeah , no it 's not a loop yet , I 'm just saying we we , in no , in
Grad D: Yeah . Well , but the good thing is we we could have loopy belief propagation which we all love .
Grad E: Mmm .

Summary: Grad E proposed the idea that Go-there decision was also worth thinking about. Professor B suggested that the decision could stick to the discourse properties as a placeholder. With regard to the lack of ontologies, Professor B thought that it could use the same properties like exhibiting and selling. Grad E doubted the choice of binary EVA values, but Professor B insisted that it was still necessary to make this choice. Then the group members discussed the layout of belief-nets, for example, the connection between Go-there nodes and other ones such as endpoints. And Professor B reminded me that the belief-nets should not have loops.