## Posts

Comment by acorn on Editor Mini-Guide · 2020-01-03T13:46:15.291Z · score: 1 (1 votes) · LW · GW

It seems on the MacOS Catalina Version 10.15, Safari Version 13.0.2, the Ctrl-Cmd-4 does not work either. I have tried every possible combination (Ctrl,Cmd,4,M) on both Safari and Chrome but none of them works. Do you have any ideas?

Comment by acorn on Normative assumptions: regret · 2020-01-03T11:04:56.386Z · score: 1 (1 votes) · LW · GW

Sorry for the format here, and I still try to figure out how to use markdown in the comment.

I find difficulty understanding inferences about parameters $\alpha,\beta,\gamma$ in the "Example:regret" part.

Take the fully rational planner p for example.

Since the human will say h following s, the different between reward functions for h and -h is non-negative, which implies that: $(\beta R(h)+\gamma R(h|s)) - (\beta R(\sim h)+\gamma R(\sim h|s)) \geq 0$

Then it is concluded that $\beta R(h-\sim h)+\gamma R(h-\sim h|s)\geq0$

Similarly, from the human will say $\sim h$ following i, we have $\beta R(h-\sim h)+\delta R(h-\sim h|i)\leq0$

It seems that more information about the reward function is need in order to arrive at the final model with $(p,R(\alpha,\beta,\gamma,\delta)|\gamma\geq-\beta\geq\delta)$

Comment by acorn on Toy model piece #4: partial preferences, re-re-visited · 2020-01-02T20:31:37.853Z · score: 3 (2 votes) · LW · GW

Sorry for my vague expressions here. What I try to say is that "I prefer apples to bananas and I prefer apples to peaches". My original thought is that: If this statement is formalized in a single world, since it is not clear that whether I prefer bananas to peaches, it seems that the function l has to map apples to bananas and peaches at the same time, which violates its one-to-one property.

But maybe I also asked a bad question: I mistook the definition of partial preferences for any simple statement about preferences, and tried to apply the model proposed in this post to the "composite" preferences, which actually expressed two preferences.

Comment by acorn on Toy model piece #4: partial preferences, re-re-visited · 2019-12-30T20:39:31.665Z · score: 1 (1 votes) · LW · GW