RE: Hardfork 21 - Steem Proposal System (SPS) + Economic Improvement Proposal (EIP)
Moving from a linear rewards curve to a convergent linear rewards curve.
Are the parameters for the convergent linear curve available? The devil is in the detail on this change.
From looking at the vandeberg deep dive post, if you are the first voter on a post / comment, then:
- A HF20 $0.02 upvote could initially add $0.00 to a post / comment under HF21.
- A HF20 $0.10 upvote could initially add $0.01 to a post / comment under HF21.
In both cases I'm not sure of the numbers, hence the request for the parameters.
Both upvotes would increase back up to (and indeed slightly above) their HF20 values if enough value is added to the post in total.
A communication piece explaining how this particular change will affect smaller votes would be useful. Including what level of overall post value makes for a reasonably "efficient" use of a vote. When HF21 kicks in, this effect will probably come as a surprise to many users.
In his post, @vandeberg gave the exact formula. What more parameters do you want?
He gives a formula of the form: n^2 / (n + 1)
But in the example he uses: n^2 / (n/5 + 1)
My reading was that the post was a broad discussion of the general premise of CLC curves. If the final formula for the HF is confirmed then that would be useful to know.
Oops, you're right! I missed that bait and switch, where one formula was used for introduction, a different formula to demonstrate examples, and then switched back to the first for the conclusion.
The actual formula they implemented is
( rshares + s ) * ( rshares + s ) - s * s / ( rshares + 4 * s )It's a bit more complex than explained in the deep-dive, and I don't feel qualified to explain it properly.
Thanks Joseph, that's helpful!
I had a check on github and it looks like "s" may be 2,000,000,000,000 rshares. Working through the formula on that basis gives a curve that:
So a HF20 $0.10 upvote would:
Although there is also some scaling to take into account (since the lower rewards on smaller value posts would be spread across all posts over time).