# [EM] Teams

Susan Simmons suzerainsimmons at outlook.com
Fri Jul 9 18:19:46 PDT 2021

```Very Good! You are a technical writing genius!

A selling point ... it works by unification (amalgamation), not mere elimination. Members of the absorbed group (that would have been summarily discarded by a less provident method) may continue to inform the outcome or, in other words, contribute to the democratic strength of the group.

Sent from my MetroPCS 4G LTE Android Device

-------- Original message --------
From: Daniel Carrera <dcarrera at gmail.com>
Date: 7/9/21 4:41 PM (GMT-08:00)
To: Susan Simmons <suzerainsimmons at outlook.com>
Cc: election-methods at lists.electorama.com
Subject: Re: [EM] Teams

On Fri, Jul 9, 2021 at 4:27 PM Susan Simmons <suzerainsimmons at outlook.com<mailto:suzerainsimmons at outlook.com>> wrote:
Did anybody recognize Teams as a reformulation of River?

It shows that it is not necessary to explicify the implicit tree structure induced by the successive engulfing of one team by another.

Does this simplified formulation increase River's chances of public adoption?

It took me some effort to understand the Teams method, but maybe I'm not a good test. I'm only a little smarter than your average koala ;-)  But let me offer a different way to write the Teams / River method that might be a little easier to follow. Among other things, I removed the sports analogy, moved some of the core concepts higher up, and inserted some redundancy. Let me know what you think:

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Overview... the count is based on the pairwise support matrix.

The winner is elected via a series of rounds in which candidates are merged into groups, where each group has a unique head. The first round begins with every candidate being the sole member of a one-member group. Each round consists of two steps:

1. Identify two groups to merge. Find the group “A” for which the head of the group has the greatest pairwise loss against any member of another group.

2. Group “A” is merged into the group of the pairwise winner from step (1) and the previous head of group “A” is no longer the head of any group.

The rounds end when all candidates have been merged into one group. The head of this one group is elected.
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Cheers,
Daniel
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