How teams are evaluated for the Tournament (NET)

475 Views | 1 Replies | Last: 1 mo ago by annarborbear
HoopDreams
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from AI:

how NET works...


Core idea

NET is a performance-based ranking built from game results and efficiency metrics. It is not just wins/losses and not just margin of victory it blends several factors.


Main components (what goes into NET)

1) Team Value Index (TVI)

This is results-based.
It rewards:

  • Beating strong teams
  • Winning road games
  • Neutral-court wins
  • Penalizes bad losses (especially at home)
Think of this as:
Quote:

Quote:
"Who did you beat, where did you beat them, and how hard was it to do?"



2) Adjusted Net Efficiency

This is performance-based.
It measures:
  • Offensive efficiency (points scored per possession)
  • Defensive efficiency (points allowed per possession)
  • Adjusted for opponent strength and game location
Basic concept:

Net Efficiency = Offensive Efficiency Defensive Efficiency

Example:
  • Score 1.12 points per possession
  • Allow 0.98 points per possession
  • Net efficiency = +0.14
The NCAA then adjusts this based on:

  • Opponent quality
  • Home vs road vs neutral
3) Game location weighting

Road wins count more than home wins.

Difficulty order:
[ol]
  • Road win (most valuable)
  • Neutral win
  • Home win (least valuable)
  • [/ol]

    Losses work the same way in reverse.

    4) Scoring margin (capped)

    Margin of victory is included but limited so teams don't run up scores.

    • The cap is 10 points
    • Winning by 10 = same as winning by 30 in the model
    5) Pace/possessions

    Everything is calculated per possession so fast teams aren't automatically rewarded over slow teams.


    What NET is NOT

    It is NOT just:
    • AP poll voting
    • Strength of schedule alone
    • Record alone
    • Computer stats alone
    It's a blend of:

    • Results + efficiency + opponent strength + location
    How it's used (Selection Sunday)

    The committee uses NET as the main sorting tool.

    Key quadrant system:

    Quadrant 1 (best wins):

    • Home: beat teams ranked 130
    • Neutral: 150
    • Away: 175
    Quadrant 4 (worst losses):

    • Home: 161+
    • Neutral: 201+
    • Away: 241+
    So a road win vs #60 can matter a lot more than a home win vs #25.


    Simple way to think about the formula

    While the exact math is hidden, conceptually it behaves like:

    NET
    (Win quality + opponent strength + location value)
    +
    (Adjusted offensive efficiency adjusted defensive efficiency)

    with margin capped and everything adjusted by possessions.


    Why this matters for Cal (example context)

    For a team like Cal:

    • Road wins vs mid-tier ACC teams boost NET a lot
    • Close losses to strong teams don't hurt as badly
    • Blowing out weak teams doesn't help much after +10
    annarborbear
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    We moved up one place today - from #52 to #51. But the main reason for that is that the previous #51, Miami, dropped to #55 after losing to #102 Florida State. It is all very complicated, but the heaviest weighting is apparently still on who you beat or lose to. And it is my understanding that while losing to #256 Pitt would have really hurt us, beating them, even on the road, didn't count for much.

    From a NET standpoint, we have no more Quad 1 teams to play. But Virginia, Virginia Tech and Clemson will be Quad 2 teams ranked above us and wins against them should help to move us up.

    But one thing I have learned is that the NET system is so complicated, we might as well just wait until after each game to see what the computer has to say.

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