LESSWRONG
LW

aphyer
5040474520
Message
Dialogue
Subscribe

I am Andrew Hyer, currently living in New Jersey and working in New York (in the finance industry).

Posts

Sorted by New

Wikitag Contributions

Comments

Sorted by
Newest
No wikitag contributions to display.
the jackpot age
aphyer3d60

Not in general.  As you say, GM requires positive numbers, but there's a reason for this: imagine GM as log-scaling everything and then performing AM on the results.

So to get the GM of 10 and 1000: 

  • Realize that 10 = 10^1, 1000 = 10^3
  • Then average 1 and 3 to get 2.
  • So your result is 10^2=100.

But now notice that:

  • 0.01 is 10^-2
  • 0.00001 is 10^-5
  • 0.0000000001 is 10^-10
  • 0 is 10^[negative infinity]?
  • -1 is...uh...

and so the GM of 1 million and 0.00000000000000000000000001 is 0.00000000000001, and the GM of 1 billion and 0 is 0.  This won't really lend itself to calculating a GM of a list including a negative number.

One thing you can do, though, which makes sense if you are e.g. calculating your utility as log(your net worth) in various situations, is calculate the GM of [your current net worth + this value].

For instance, if you are considering a gamble that has a 50% change of gaining you $2000 and a 50% chance of losing you $1000:

  • If your net worth is $1000, this replaces $1000 with a 50% chance of $3000 and a 50% change of $0.  Since GM(3000, 0) = 0, this is worse than just staying with the $1000 .
  • If your net worth is $2000, this replaces $2000 with a 50% chance of $4000 and a 50% chance of $1000.  Since GM(4000, 1000) = 2000, you are indifferent.
  • If your net worth is $4000, this replaces $4000 with a 50% chance of $6000 and a 50% chance of $3000.  Since GM(6000, 3000) ~= 4242, this is better than staying with the $4000.
Reply
Don't Eat Honey
aphyer16d157

Strongly seconded.

Suppose that two dozen bees sting a human, and the human dies of anaphylaxis.  Is the majority of the tragedy in this scenario the deaths of the bees?

I could be convinced that I have an overly-rosy view of honey production.  I have no real information on it besides random internet memes, which give me an impression like 'bees are free to be elsewhere, but stay in a hive where some honey sometimes gets taken because it's a fair trade for a high-quality artificial hive and an indestructible protector.'  That might be propaganda by Big Bee.  That might be an accurate summary of small-scale beekeepers but not of large-scale honey production.  I am not sure, but I could be convinced on this point.

But the general epistemics on display here do not encourage me to view this as a more trustworthy source than internet memes.

Reply2
No, Futarchy Doesn’t Have an EDT Flaw
aphyer19d1417

Given that prediction markets currently don't really have enough liquidity, saying 'you need 1000x more liquidity to try to entice traders into putting work into something that can only pay off 0.1% of the time' does in fact sound like something of a flaw.

Reply
D&D.Sci: The Choosing Ones
aphyer2mo*70

So this boils down to interpreting scatter charts.

Say you plot two normally-distributed numbers against one another.  You get something that looks like this:
 

If instead you plot two d6 rolls against one another, you see this: 

with sharp cutoffs because the d6 roll is bounded at 1 below and 6 above, and with a regular grid because the d6 roll is always an integer.

Various relationships between the variables can show up in the scatter chart

If Y is the sum of two d6 rolls, and X is the first roll, you see this:

You can think of this graph as being made up of various stripes:

The vertical green line is 'every value the second die can roll, given that the first die rolled a 2'.

The diagonal orange line is 'every value the first die can roll, given that the second die rolled a 4'.

Suppose that X = twice the first die plus the second die, and Y = twice the second die plus the first die:

Again the points form a grid, and again we can see patterns.  Since the green line has 6 points on it and moves [up 2 and right 1] each step, we can see something that takes 6 discrete values and applies 2x its value to Y and 1x its value to X.

Now plot Bella's scores against Liboulen's:
 


This is a bit more complicated because there are three variables rather than two.  But you can still imagine the same lines:

and you can disentangle the corresponding variables.

Reply
D&D.Sci: The Choosing Ones [Answerkey and Ruleset]
aphyer2mo20

Thank you for writing this!  While I got most of the mechanics, I had some amusing misinterpretations of what they meant:

  1. I assumed that OBVIOUSLY physical stats would be less important than mental stats, and so guessed them the wrong way around, so throughout my comments I'm saying 'physical' to mean 'mental' and vice versa.
  2. I concluded that the effect of Luck was actually due to Amy cheating (look, Colleen plus whichever fairie is consulting us are both also cheating!  There should be a high base rate on this!) and spent a while looking for ways to appease her.
Reply
D&D.Sci: The Choosing Ones
aphyer2mo30

CONTAINS FINAL ANSWER

On further examination, it looks like there are bonuses assigned for the minimum of the three stats A-C (I've been calling these the 'physical stats') and the maximum of the three stats D-F (I've been calling these the 'mental stats').  

This doesn't dislodge #11 from the top of the list, but it does move up #2 (whose minimum physical stat is 6) and worsen #19 and #7 (whose minimum physical stat is 2).

My final top 3 is #11, then #19, then #2.  (If the fairy in question seems disappointed to see #11, it's probably Amy, and I'll recommend her #19).

Reply
D&D.Sci: The Choosing Ones
aphyer2mo*72

Sadly, these are also the same top three candidates, in the same order, as you get by doing none of this work and just running a linear regression.

:(

Reply
D&D.Sci: The Choosing Ones
aphyer2mo30

No stat pairs exhibit interesting effects.

Holly's score is given by the sum of all 6 stats, plus 20, plus a number from 1 to 12.  Despite my initial hope that this was a seventh stat, it is not: or, at least, it exhibits no correlation with success.

Amy's score actually does seem to have some small but non-zero predictive power that isn't related to stats.  I've included it in my regression, though it doesn't actually change my top three list.   It does, however, make me suspicious.  There are two possible explanations for this:

  • Amy might be observing some trait of heroes that is not one of the six stats and nevertheless predictive of their success.
  • Amy might be slipping some quiet help to her preferred candidates/sabotaging her non-preferred candidates.  Votes of 1 and 99 suggest that she's trying to have as large an effect as possible on the selection of Chosen, and so she might be doing something else sneaky.

Current answer:

My current top candidate is #11 (stats of 7-4-7-10-10-7).  If they should Refuse The Call, my current second place is #19, (5-2-5-10-9-10, also supported by Amy), and my current third place is #7 (10-2-9-7-9-6).

I'll tweak the regression a bit and see if anything changes, but #11 is very far ahead of the pack, with the highest stat total and a skew towards the D/E/F stats that are more valuable, so I don't expect them to stop being at the top.

Reply
D&D.Sci: The Choosing Ones
aphyer2mo*30

A, B and C (the three stats that Bella/Liboulen/Linestra care about) are all slightly positively correlated with one another.  D, E and F (the three stats that Fizz/Ister/Ziqual care about) are again all slightly positively correlated with one another.  

However, each of A-C is slightly negatively correlated with each of D-F. This is true in the candidate data, it's not an artefact of how the fairies choose. 

My current theory is that e.g. A-C are Physical stats, and D-F are Mental stats (or vice versa), and that these are correlated between potential heroes.  This also suggests some faerie politics, with the Physical Stats Caucus and the Mental Stats Caucus pushing for different types of hero.

Most stats seem straightforwardly beneficial to increase.  D-F seem slightly more valuable than A-C.  

Given that Fizz/Ziqual sound like male names, while Bella/Linestra sound like female names, and our faerie is female, she's more likely to be in the A-C Caucus than in the D-F caucus: don't tell her that D-F are more valuable until you figure out her name.

In particular, it looks like A-C have diminishing returns while D-F have increasing returns.  Increasing A from 9 to 10 actually might be actively bad.  Increasing B/C from 9 to 10 is good, but nowhere near as good as increasing them from 1 to 2.  On the other hand, increasing D-F seems to get even better as they get higher (though E in particular looks a bit odd).

Still to do:

  • Check whether Amy or Holly knows anything that isn't encapsulated in stats.
  • Check for interactions between stats: is there a breakpoint on e.g. STR > CON or INT > WIS?  We could see the diminishing returns on A-C if they were penalized for being higher than D-F?
Reply1
D&D.Sci: The Choosing Ones
aphyer2mo30

Fizz, Ister and Ziqual appear to be driven by three different variables: let's call them D, E and F (Doubt, Envy and Fear?).

  • Ister gives 50+D
  • Ziqual gives (D*E).  He then subtracts 1 about half of the time, but never if E==1.  (Hopefully also not if D==1, but it's hard to be certain on that side).
  • Fizz gives Min(D, E) + 2F + 41.

We now have six variables, which makes me suspect that actually these are meant to be STR/DEX/CON/INT/WIS/CHA in some order.  I can't reconstruct which order, though.  (Though if five of them seem valuable and one seems useless I am going to be open to the possibility that this is the same winrate calc as in the original D&D.Sci).

The obvious next step is going to be taking the success/failure data and evaluating it based on these six derived variables.  Back soon...

Reply
Load More
28D&D.Sci Tax Day: Adventurers and Assessments Evaluation & Ruleset
3mo
10
46D&D.Sci Tax Day: Adventurers and Assessments
3mo
14
33D&D.Sci Dungeonbuilding: the Dungeon Tournament Evaluation & Ruleset
6mo
8
49D&D.Sci Dungeonbuilding: the Dungeon Tournament
7mo
16
47D&D.Sci Coliseum: Arena of Data Evaluation and Ruleset
9mo
13
41D&D Sci Coliseum: Arena of Data
9mo
23
43Ambiguity in Prediction Market Resolution is Still Harmful
1y
17
73D&D.Sci Scenario Index
1y
0
51D&D.Sci Alchemy: Archmage Anachronos and the Supply Chain Issues Evaluation & Ruleset
1y
11
42D&D.Sci Alchemy: Archmage Anachronos and the Supply Chain Issues
1y
16
Load More