Mon, Feb 6 2012

Eval Vote Change

By nathan at 2:41 pm

Effective immediately, we have changed our algorithm for rewarding voters of successful products during eval.

The previous algorithm rewarded influence based on the proportion of votes cast overall to the proportion of votes cast for products that went on to be marked Under Consideration (with larger portions given to ideas that were ultimately selected).

There were two main problems with the former system:

1. Clarity – Due to the complexity of the old system, it was hard for users to tell how much influence they stood to gain from voting on an idea at any given time. It was also a challenge to understand for users unfamiliar with the system.

2. Influence amounts – Many people are casting extremely large numbers of votes (sometimes upwards of 150 per day). Because they cast such a wide net, they often are awarded for ideas that go under consideration. However, because they are penalized for the number of votes they cast overall, their experience percentages tend to be minute to the point of absurdity. This is a bad experience for everyone involved, and we want to encourage people to vote for ideas they like, not to simply hedge their bets by voting for as many ideas as possible.

To that end, we are changing the influence algorithm for voting, effective immediately. As before, at the end of every eval round, two groups will be awarded influence for each winning product: 1) people that voted for that product, 2) people that voted for products that were under consideration, but were ultimately passed on during the course of that round. However, instead of diluting influence on a per user basis, each voter will be given the same amount of voting influence, depending on which of those two groups they belonged to. The catch is that users will be limited to casting 15 votes per day. The vote count will reset each night at Midnight EST. Votes cast prior to this change will stand as is.

The 15 vote limit is a measure to prevent over-voting (voting on as many possible ideas in order to have a better chance at getting influence). As such, there will be no rollovers on unused votes from day to day. We realize that not everyone can log on to Quirky every day, but 15 votes per day is meant as an absolute maximum. We are not trying to encourage people to use every possible vote; we are trying to encourage people to vote for the ideas they like the most.

As with everything at Quirky, this is an ongoing experiment. We may change things in the future based on the results. Possible future changes may include adjusting the amount of daily votes up or down, awarding additional daily votes to certain groups based on merit, and eliminating influence for votes on non-winners.

As always, thanks for sticking with us as we strive to make invention more accessible.

Nathan

(edit: the system resets at Midnight EST, not GMT)