Now in:
Oklahoma State
DePaul
Virginia Tech
Now out:
Duquesne
Northwestern
Illinois
Conferences with multiple bids:
Pac 12: 7
(1) Stanford
(1) USC
(3) Washington
(4) California
(5) Arizona State
(6) UCLA
(7) Washington State
SEC: 7
(2) South Carolina
(2) Kentucky
(2) Georgia
(3) Tennessee
(3) Texas A&M
(4) Missouri
(5) Florida
ACC: 7
(3) Notre Dame
(7) Florida State
(8) Duke
(8) Miami (FL)
(9) Boston College
(10) Syracuse
(10) Virginia Tech
Big 12: 6
(1) Baylor
(2) Texas
(4) Kansas State
(7) Oklahoma
(8) West Virginia
(9) Oklahoma State
Big Ten: 6
(5) Michigan State
(5) Ohio State
(6) Rutgers
(6) Purdue
(8) Iowa
(10) Maryland
Big East: 3
(4) St. John's
(6) Seton Hall
(10) DePaul
American: 2
(1) Connecticut
(9) South Florida
West Coast: 2
(7) Santa Clara
(9) BYU
Predicting the NCAA Women's Basketball Tournament since 2008
Updates Mondays and Fridays
Tuesday, December 29, 2015
Tuesday, December 22, 2015
December 22 Update
Now in:
California
Arizona State
Washington State
South Florida
Duquesne
Syracuse
Ohio
Now out:
Virginia Tech
DePaul
North Carolina State
Green Bay
Oregon State
Arizona
Central Michigan
Conferences with multiple bids:
Big Ten: 8
(3) Michigan St
(4) Ohio St
(4) Purdue
(5) Rutgers
(8) Iowa
(8) Illinois
(9) Maryland
(10) Northwestern
Pac 12: 7
(1) Stanford
(2) USC
(4) UCLA
(5) California
(5) Washington
(6) Arizona State
(6) Washington State
SEC: 7
(1) Kentucky
(1) South Carolina
(2) Georgia
(3) Tennessee
(3) Texas A&M
(4) Missouri
(5) Florida
ACC: 6
(3) Notre Dame
(7) Florida State
(7) Duke
(7) Miami (FL)
(9) Boston College
(10) Syracuse
Big 12: 5
(2) Baylor
(2) Texas
(6) Kansas State
(8) Oklahoma
(10) West Virginia
Big East: 2
(6) St. John's
(7) Seton Hall
American: 2
(1) Connecticut
(8) South Florida
West Coast: 2
(9) BYU
(9) Santa Clara
Atlantic 10: 2
(10) Duquesne
(11) Dayton
California
Arizona State
Washington State
South Florida
Duquesne
Syracuse
Ohio
Now out:
Virginia Tech
DePaul
North Carolina State
Green Bay
Oregon State
Arizona
Central Michigan
Conferences with multiple bids:
Big Ten: 8
(3) Michigan St
(4) Ohio St
(4) Purdue
(5) Rutgers
(8) Iowa
(8) Illinois
(9) Maryland
(10) Northwestern
Pac 12: 7
(1) Stanford
(2) USC
(4) UCLA
(5) California
(5) Washington
(6) Arizona State
(6) Washington State
SEC: 7
(1) Kentucky
(1) South Carolina
(2) Georgia
(3) Tennessee
(3) Texas A&M
(4) Missouri
(5) Florida
ACC: 6
(3) Notre Dame
(7) Florida State
(7) Duke
(7) Miami (FL)
(9) Boston College
(10) Syracuse
Big 12: 5
(2) Baylor
(2) Texas
(6) Kansas State
(8) Oklahoma
(10) West Virginia
Big East: 2
(6) St. John's
(7) Seton Hall
American: 2
(1) Connecticut
(8) South Florida
West Coast: 2
(9) BYU
(9) Santa Clara
Atlantic 10: 2
(10) Duquesne
(11) Dayton
Monday, December 14, 2015
December 14 Update: Triumph of UConn
Connecticut takes its rightful place atop the College Women's Hoops S-Factor this week, due mostly to the Huskies' dominance in RPI.
Now in:
Michigan State
DePaul
West Virginia
Penn
Elon
Now out:
Syracuse
Auburn
Princeton
Michigan
James Madison
Conferences with multiple bids:
Big Ten: 8
ACC: 7
SEC: 7
PAC 12: 6
Big 12: 5
Big East: 3
West Coast: 2
Horizon: 2
Now in:
Michigan State
DePaul
West Virginia
Penn
Elon
Now out:
Syracuse
Auburn
Princeton
Michigan
James Madison
Conferences with multiple bids:
Big Ten: 8
ACC: 7
SEC: 7
PAC 12: 6
Big 12: 5
Big East: 3
West Coast: 2
Horizon: 2
Monday, December 7, 2015
First prediction of 2016!
Conferences with multiple bids:
Big East - 2
PAC 12 - 6
ACC - 8
Big 12 - 4
SEC - 8
Big Ten - 8
West Coast - 2
Horizon - 2
Big East - 2
PAC 12 - 6
ACC - 8
Big 12 - 4
SEC - 8
Big Ten - 8
West Coast - 2
Horizon - 2
Tuesday, March 17, 2015
Happy Trails!
This is my last post until December, probably. The tournament starts on Friday! Boomer Sooner!
Metabracketology 2015
This is my annual post about metabracketology, or bracketology-ology.
The College Women's Hoops S-Factor correctly predicted 62 of the 64 teams in the tournament this year, missing on the inclusion of Tulane and Arkansas. The S-Factor predicted the seeds of the field within one seed of the result for 51 of the 64 teams, far better than the next nearest numeric ranking algorithm (Omni Rankings, only 43 of 64).
I looked at all 33 of the prediction methodologies included in the Who Got Screwed? post, plus the ranking method of WayneBearCal on rebkell.net, which is a composite of the Massey Rating, Massey Power Rating, RPI, and Sagarin PurePoints Predictor.
The S-Factor and the RPI calculations predicted exact seeds shockingly poorly this year. Last year, RPI correctly predicted the seeds of 29 teams, second only to Charlie Creme. This year, RPI only predicted the seeds of 9 teams, good for 31st place. The S-Factor was better, having predicted the seeds of 22 teams correctly, but this was a middle-of-the-pack result.
The S-Factor was a much better predictor of teams once the window was widened to include seeds plus or minus one from predicted. 80% of teams were seeded nearly correctly by the S-Factor. Of course, we were all eating SpaceJunkie's dust this year.
These tables show predictions for the top 12 seeds only, since these are the seeds of the at-large bids.
These two tables exist to accurately compare ranked lists to the AP and Coaches' polls. The AP poll predicted more exact seeds, but the Coaches' poll predicted more seeds within 1.
We had some excellent predictions this year over on the old rebkell.net boards. Though Charlie Creme of ESPN.com correctly picked all 64 teams this year as usual, the winner by all three scoring metrics (tied with Creme in the Borda and Paymon methods for 1st, outright winner on the Sum of Points method) was a user submitted bracket from SpaceJunkie.
BennettRank edged out the S-Factor for best numeric only method by the Borda count method (the way AP tallies its rankings).
The S-Factor was the best numeric only method by the Sum of Points method. I described the Sum of Points method this way in 2013.
Baylor was generally believed to be the 1st place team that year and Prairie View A&M the 64th place team, so the sum is over all teams in the NCAA tournament.
The Bracket Matrix project analyzes bracket predictions for the men's game based on the Paymon method, which gives three points to every team selected in the field, two bonus points to every team with a correctly predicted seed, and one bonus point for every team predicted to be within 1 seed of the final selection.
SpaceJunkie and Charlie Creme tie for the best bracket prediction by this method. The S-Factor is the best numeric-only ranking algorithm by the Paymon method.
The College Women's Hoops S-Factor correctly predicted 62 of the 64 teams in the tournament this year, missing on the inclusion of Tulane and Arkansas. The S-Factor predicted the seeds of the field within one seed of the result for 51 of the 64 teams, far better than the next nearest numeric ranking algorithm (Omni Rankings, only 43 of 64).
I looked at all 33 of the prediction methodologies included in the Who Got Screwed? post, plus the ranking method of WayneBearCal on rebkell.net, which is a composite of the Massey Rating, Massey Power Rating, RPI, and Sagarin PurePoints Predictor.
Table 1: Selection of entire field
Rank
|
Overall selection
|
No.
|
Pct.
|
Borda count pts.
|
Paymon pts.
|
1
|
Creme's bracket
|
64
|
100%
|
34
|
192
|
1
|
Creme, no bumps
|
64
|
100%
|
34
|
192
|
3
|
SpaceJunkie
|
63
|
98%
|
32
|
189
|
3
|
Matt5762 bracket
|
63
|
98%
|
32
|
189
|
3
|
CSM bracket
|
63
|
98%
|
32
|
189
|
6
|
S-Factor (2015 formula)
|
62
|
97%
|
29
|
186
|
6
|
My bracket
|
62
|
97%
|
29
|
186
|
6
|
WayneBearCal
"Proper"
|
62
|
97%
|
29
|
186
|
6
|
S-Factor (old blend)
|
62
|
97%
|
29
|
186
|
6
|
RealtimeRPI RPI
|
62
|
97%
|
29
|
186
|
6
|
RealtimeRPI bracket
|
62
|
97%
|
29
|
186
|
6
|
Pilight's Field of 64
|
62
|
97%
|
29
|
186
|
6
|
Massey Rating
|
62
|
97%
|
29
|
186
|
6
|
Adjusted Stats EWP
|
62
|
97%
|
29
|
186
|
15
|
Warren Nolan RPI
|
61
|
95%
|
20
|
183
|
15
|
Sagarin Rating
|
61
|
95%
|
20
|
183
|
15
|
Sagarin ELO
|
61
|
95%
|
20
|
183
|
15
|
NCAA RPI
|
61
|
95%
|
20
|
183
|
15
|
Massey Power
|
61
|
95%
|
20
|
183
|
15
|
GaTech LRMC(0)
|
61
|
95%
|
20
|
183
|
15
|
BennettRank
|
61
|
95%
|
20
|
183
|
22
|
Sonny Moore
|
60
|
94%
|
13
|
180
|
22
|
Sagarin PURE_POINTS
|
60
|
94%
|
13
|
180
|
22
|
RealtimeRPI Power
|
60
|
94%
|
13
|
180
|
22
|
Omni Rankings
|
60
|
94%
|
13
|
180
|
26
|
Omni bracket
|
59
|
92%
|
9
|
177
|
26
|
GaTech LRMC Classic
|
59
|
92%
|
9
|
177
|
26
|
GaTech LRMC Bayesian
|
59
|
92%
|
9
|
177
|
29
|
Sagarin GoldenMean
|
58
|
91%
|
6
|
174
|
30
|
Warren Nolan NPI
|
55
|
86%
|
5
|
165
|
31
|
NCAA W-L %
|
51
|
80%
|
4
|
153
|
32
|
D1SN "poll"
|
46
|
72%
|
3
|
138
|
33
|
AP poll
|
36
|
56%
|
2
|
108
|
34
|
Coaches poll
|
35
|
55%
|
1
|
105
|
Table 2: Predicted exact seeds, entire field of 64
Rank
|
Exact seeds –
entire field |
No.
|
Pct.
|
Borda count pts.
|
Paymon pts.
|
1
|
SpaceJunkie
|
30
|
46.9%
|
34
|
60
|
1
|
Matt5762 bracket
|
30
|
46.9%
|
34
|
60
|
1
|
Creme's bracket
|
30
|
46.9%
|
34
|
60
|
4
|
CSM bracket
|
29
|
45.3%
|
31
|
58
|
4
|
Creme, no bumps
|
29
|
45.3%
|
31
|
58
|
6
|
Omni Rankings
|
28
|
43.8%
|
29
|
56
|
7
|
My bracket
|
25
|
39.1%
|
28
|
50
|
7
|
Sagarin PURE_POINTS
|
25
|
39.1%
|
28
|
50
|
7
|
GaTech LRMC Classic
|
25
|
39.1%
|
28
|
50
|
7
|
BennettRank
|
25
|
39.1%
|
28
|
50
|
11
|
Adjusted Stats EWP
|
24
|
37.5%
|
24
|
48
|
12
|
WayneBearCal
"Proper"
|
23
|
35.9%
|
23
|
46
|
12
|
Massey Power
|
23
|
35.9%
|
23
|
46
|
14
|
S-Factor (2015 formula)
|
22
|
34.4%
|
21
|
44
|
14
|
Sonny Moore
|
22
|
34.4%
|
21
|
44
|
14
|
Sagarin Rating
|
22
|
34.4%
|
21
|
44
|
14
|
Omni bracket
|
22
|
34.4%
|
21
|
44
|
18
|
S-Factor (old blend)
|
21
|
32.8%
|
17
|
42
|
18
|
Massey Rating
|
21
|
32.8%
|
17
|
42
|
20
|
RealtimeRPI bracket
|
20
|
31.3%
|
15
|
40
|
20
|
GaTech LRMC Bayesian
|
20
|
31.3%
|
15
|
40
|
22
|
Sagarin ELO
|
17
|
26.6%
|
13
|
34
|
22
|
Pilight's Field of 64
|
17
|
26.6%
|
13
|
34
|
24
|
Sagarin GoldenMean
|
16
|
25.0%
|
11
|
32
|
24
|
RealtimeRPI Power
|
16
|
25.0%
|
11
|
32
|
24
|
D1SN "poll"
|
16
|
25.0%
|
11
|
32
|
27
|
RealtimeRPI RPI
|
13
|
20.3%
|
8
|
26
|
27
|
GaTech LRMC(0)
|
13
|
20.3%
|
8
|
26
|
27
|
AP poll
|
13
|
20.3%
|
8
|
26
|
30
|
Coaches poll
|
12
|
18.8%
|
5
|
24
|
31
|
NCAA RPI
|
10
|
15.6%
|
4
|
20
|
32
|
Warren Nolan RPI
|
9
|
14.1%
|
3
|
18
|
33
|
Warren Nolan NPI
|
8
|
12.5%
|
2
|
16
|
34
|
NCAA W-L %
|
7
|
10.9%
|
1
|
14
|
The S-Factor and the RPI calculations predicted exact seeds shockingly poorly this year. Last year, RPI correctly predicted the seeds of 29 teams, second only to Charlie Creme. This year, RPI only predicted the seeds of 9 teams, good for 31st place. The S-Factor was better, having predicted the seeds of 22 teams correctly, but this was a middle-of-the-pack result.
Table 3: Predicted seeds within 1 seed of actual result, entire field
Rank
|
Seeds within 1 -
entire field |
No.
|
Pct.
|
Borda count pts.
|
1
|
SpaceJunkie
|
57
|
89.1%
|
34
|
2
|
Creme, no bumps
|
55
|
85.9%
|
33
|
3
|
Matt5762 bracket
|
54
|
84.4%
|
32
|
3
|
Creme's bracket
|
54
|
84.4%
|
32
|
5
|
S-Factor (2015 formula)
|
51
|
79.7%
|
30
|
5
|
RealtimeRPI bracket
|
51
|
79.7%
|
30
|
7
|
CSM bracket
|
50
|
78.1%
|
28
|
8
|
Omni Rankings
|
43
|
67.2%
|
27
|
8
|
Omni bracket
|
43
|
67.2%
|
27
|
8
|
BennettRank
|
43
|
67.2%
|
27
|
11
|
WayneBearCal
"Proper"
|
42
|
65.6%
|
24
|
11
|
Sagarin Rating
|
42
|
65.6%
|
24
|
11
|
Sagarin PURE_POINTS
|
42
|
65.6%
|
24
|
14
|
My bracket
|
41
|
64.1%
|
21
|
15
|
S-Factor (old blend)
|
40
|
62.5%
|
20
|
15
|
Sagarin GoldenMean
|
40
|
62.5%
|
20
|
15
|
Massey Power
|
40
|
62.5%
|
20
|
18
|
Sagarin ELO
|
39
|
60.9%
|
17
|
18
|
RealtimeRPI Power
|
39
|
60.9%
|
17
|
18
|
Pilight's Field of 64
|
39
|
60.9%
|
17
|
18
|
Massey Rating
|
39
|
60.9%
|
17
|
18
|
GaTech LRMC(0)
|
39
|
60.9%
|
17
|
23
|
Warren Nolan RPI
|
38
|
59.4%
|
12
|
23
|
NCAA RPI
|
38
|
59.4%
|
12
|
23
|
GaTech LRMC Classic
|
38
|
59.4%
|
12
|
23
|
Adjusted Stats EWP
|
38
|
59.4%
|
12
|
27
|
Sonny Moore
|
37
|
57.8%
|
8
|
27
|
GaTech LRMC Bayesian
|
37
|
57.8%
|
8
|
29
|
RealtimeRPI RPI
|
36
|
56.3%
|
6
|
30
|
D1SN "poll"
|
28
|
43.8%
|
5
|
31
|
Coaches poll
|
24
|
37.5%
|
4
|
32
|
AP poll
|
22
|
34.4%
|
3
|
33
|
Warren Nolan NPI
|
20
|
31.3%
|
2
|
34
|
NCAA W-L %
|
16
|
25.0%
|
1
|
The S-Factor was a much better predictor of teams once the window was widened to include seeds plus or minus one from predicted. 80% of teams were seeded nearly correctly by the S-Factor. Of course, we were all eating SpaceJunkie's dust this year.
Table 4: Predicted exact seeds, top 12 seeds only
Rank
|
Exact seeds -
Top 12 seeds only |
No.
|
Pct.
|
Borda count pts.
|
1
|
SpaceJunkie
|
27
|
56.3%
|
34
|
1
|
Matt5762 bracket
|
27
|
56.3%
|
34
|
3
|
Creme's bracket
|
26
|
54.2%
|
32
|
4
|
Creme, no bumps
|
25
|
52.1%
|
31
|
5
|
CSM bracket
|
23
|
47.9%
|
30
|
6
|
BennettRank
|
20
|
41.7%
|
29
|
7
|
My bracket
|
19
|
39.6%
|
28
|
7
|
Omni Rankings
|
19
|
39.6%
|
28
|
7
|
Adjusted Stats EWP
|
19
|
39.6%
|
28
|
10
|
GaTech LRMC Classic
|
18
|
37.5%
|
25
|
11
|
S-Factor (2015 formula)
|
17
|
35.4%
|
24
|
11
|
Sagarin PURE_POINTS
|
17
|
35.4%
|
24
|
13
|
WayneBearCal
"Proper"
|
16
|
33.3%
|
22
|
13
|
S-Factor (old blend)
|
16
|
33.3%
|
22
|
13
|
Massey Rating
|
16
|
33.3%
|
22
|
13
|
Massey Power
|
16
|
33.3%
|
22
|
13
|
D1SN "poll"
|
16
|
33.3%
|
22
|
18
|
Sonny Moore
|
15
|
31.3%
|
17
|
18
|
Sagarin Rating
|
15
|
31.3%
|
17
|
18
|
Omni bracket
|
15
|
31.3%
|
17
|
18
|
GaTech LRMC Bayesian
|
15
|
31.3%
|
17
|
22
|
Sagarin ELO
|
14
|
29.2%
|
13
|
22
|
RealtimeRPI bracket
|
14
|
29.2%
|
13
|
24
|
RealtimeRPI Power
|
13
|
27.1%
|
11
|
24
|
AP poll
|
13
|
27.1%
|
11
|
26
|
Pilight's Field of 64
|
12
|
25.0%
|
9
|
26
|
Coaches poll
|
12
|
25.0%
|
9
|
28
|
Sagarin GoldenMean
|
11
|
22.9%
|
7
|
28
|
GaTech LRMC(0)
|
11
|
22.9%
|
7
|
30
|
RealtimeRPI RPI
|
10
|
20.8%
|
5
|
31
|
Warren Nolan RPI
|
7
|
14.6%
|
4
|
31
|
NCAA RPI
|
7
|
14.6%
|
4
|
33
|
Warren Nolan NPI
|
5
|
10.4%
|
2
|
34
|
NCAA W-L %
|
4
|
8.3%
|
1
|
These tables show predictions for the top 12 seeds only, since these are the seeds of the at-large bids.
Table 5: Predicted seeds within 1 seed of actual result, top 12 seeds only
Rank
|
Seeds within one -
Top 12 seeds only |
No.
|
Pct.
|
Borda count pts.
|
1
|
SpaceJunkie
|
41
|
85.4%
|
34
|
1
|
Matt5762 bracket
|
41
|
85.4%
|
34
|
3
|
Creme's bracket
|
40
|
83.3%
|
32
|
4
|
Creme, no bumps
|
39
|
81.3%
|
31
|
5
|
S-Factor (2015 formula)
|
38
|
79.2%
|
30
|
5
|
My bracket
|
38
|
79.2%
|
30
|
5
|
RealtimeRPI bracket
|
38
|
79.2%
|
30
|
8
|
CSM bracket
|
36
|
75.0%
|
27
|
9
|
WayneBearCal
"Proper"
|
30
|
62.5%
|
26
|
9
|
Omni Rankings
|
30
|
62.5%
|
26
|
9
|
BennettRank
|
30
|
62.5%
|
26
|
12
|
S-Factor (old blend)
|
29
|
60.4%
|
23
|
12
|
Omni bracket
|
29
|
60.4%
|
23
|
14
|
Sagarin Rating
|
28
|
58.3%
|
21
|
14
|
Sagarin PURE_POINTS
|
28
|
58.3%
|
21
|
14
|
Massey Power
|
28
|
58.3%
|
21
|
14
|
D1SN "poll"
|
28
|
58.3%
|
21
|
18
|
Pilight's Field of 64
|
27
|
56.3%
|
17
|
18
|
Massey Rating
|
27
|
56.3%
|
17
|
20
|
Sagarin GoldenMean
|
26
|
54.2%
|
15
|
20
|
Sagarin ELO
|
26
|
54.2%
|
15
|
20
|
RealtimeRPI Power
|
26
|
54.2%
|
15
|
23
|
GaTech LRMC(0)
|
25
|
52.1%
|
12
|
23
|
GaTech LRMC Bayesian
|
25
|
52.1%
|
12
|
23
|
Adjusted Stats EWP
|
25
|
52.1%
|
12
|
26
|
Warren Nolan RPI
|
24
|
50.0%
|
9
|
26
|
Sonny Moore
|
24
|
50.0%
|
9
|
26
|
RealtimeRPI RPI
|
24
|
50.0%
|
9
|
26
|
NCAA RPI
|
24
|
50.0%
|
9
|
26
|
GaTech LRMC Classic
|
24
|
50.0%
|
9
|
26
|
Coaches poll
|
24
|
50.0%
|
9
|
32
|
AP poll
|
22
|
45.8%
|
3
|
33
|
Warren Nolan NPI
|
11
|
22.9%
|
2
|
34
|
NCAA W-L %
|
8
|
16.7%
|
1
|
Table 6: predicted exact seeds, top 6 seeds only
Rank
|
Exact seeds -
Top 6 seeds only |
No.
|
Pct.
|
Borda count pts.
|
1
|
CSM bracket
|
18
|
75.0%
|
34
|
2
|
Creme's bracket
|
16
|
66.7%
|
33
|
2
|
Creme, no bumps
|
16
|
66.7%
|
33
|
4
|
Adjusted Stats EWP
|
15
|
62.5%
|
31
|
5
|
SpaceJunkie
|
14
|
58.3%
|
30
|
5
|
Massey Power
|
14
|
58.3%
|
30
|
7
|
GaTech LRMC Classic
|
13
|
54.2%
|
28
|
7
|
D1SN "poll"
|
13
|
54.2%
|
28
|
7
|
BennettRank
|
13
|
54.2%
|
28
|
7
|
AP poll
|
13
|
54.2%
|
28
|
11
|
My bracket
|
12
|
50.0%
|
24
|
11
|
WayneBearCal
"Proper"
|
12
|
50.0%
|
24
|
11
|
Sagarin Rating
|
12
|
50.0%
|
24
|
11
|
Sagarin PURE_POINTS
|
12
|
50.0%
|
24
|
11
|
RealtimeRPI Power
|
12
|
50.0%
|
24
|
11
|
Omni Rankings
|
12
|
50.0%
|
24
|
11
|
Matt5762 bracket
|
12
|
50.0%
|
24
|
11
|
GaTech LRMC Bayesian
|
12
|
50.0%
|
24
|
19
|
S-Factor (old blend)
|
11
|
45.8%
|
16
|
19
|
RealtimeRPI bracket
|
11
|
45.8%
|
16
|
19
|
Massey Rating
|
11
|
45.8%
|
16
|
22
|
Sonny Moore
|
10
|
41.7%
|
13
|
22
|
Omni bracket
|
10
|
41.7%
|
13
|
22
|
Coaches poll
|
10
|
41.7%
|
13
|
25
|
Sagarin GoldenMean
|
9
|
37.5%
|
10
|
25
|
Sagarin ELO
|
9
|
37.5%
|
10
|
27
|
S-Factor (2015 formula)
|
8
|
33.3%
|
8
|
27
|
Pilight's Field of 64
|
8
|
33.3%
|
8
|
27
|
GaTech LRMC(0)
|
8
|
33.3%
|
8
|
30
|
Warren Nolan RPI
|
6
|
25.0%
|
5
|
30
|
RealtimeRPI RPI
|
6
|
25.0%
|
5
|
30
|
NCAA RPI
|
6
|
25.0%
|
5
|
33
|
Warren Nolan NPI
|
5
|
20.8%
|
2
|
34
|
NCAA W-L %
|
4
|
16.7%
|
1
|
These two tables exist to accurately compare ranked lists to the AP and Coaches' polls. The AP poll predicted more exact seeds, but the Coaches' poll predicted more seeds within 1.
Table 7: predicted seeds within 1 seed of actual result, top 6 seeds only
Rank
|
Seeds within 1 -
Top 6 seeds only |
No.
|
Pct.
|
Borda count pts.
|
1
|
Matt5762 bracket
|
23
|
95.8%
|
34
|
1
|
CSM bracket
|
23
|
95.8%
|
34
|
3
|
Creme's bracket
|
22
|
91.7%
|
32
|
4
|
S-Factor (2015 formula)
|
21
|
87.5%
|
31
|
4
|
My bracket
|
21
|
87.5%
|
31
|
4
|
SpaceJunkie
|
21
|
87.5%
|
31
|
4
|
Creme, no bumps
|
21
|
87.5%
|
31
|
8
|
GaTech LRMC(0)
|
20
|
83.3%
|
27
|
8
|
Coaches poll
|
20
|
83.3%
|
27
|
10
|
S-Factor (old blend)
|
19
|
79.2%
|
25
|
10
|
RealtimeRPI Power
|
19
|
79.2%
|
25
|
10
|
RealtimeRPI bracket
|
19
|
79.2%
|
25
|
10
|
D1SN "poll"
|
19
|
79.2%
|
25
|
14
|
Sagarin Rating
|
18
|
75.0%
|
21
|
14
|
Omni Rankings
|
18
|
75.0%
|
21
|
14
|
Omni bracket
|
18
|
75.0%
|
21
|
14
|
BennettRank
|
18
|
75.0%
|
21
|
14
|
AP poll
|
18
|
75.0%
|
21
|
19
|
WayneBearCal
"Proper"
|
17
|
70.8%
|
16
|
19
|
Sagarin PURE_POINTS
|
17
|
70.8%
|
16
|
19
|
Sagarin GoldenMean
|
17
|
70.8%
|
16
|
19
|
GaTech LRMC Bayesian
|
17
|
70.8%
|
16
|
19
|
Adjusted Stats EWP
|
17
|
70.8%
|
16
|
24
|
Warren Nolan RPI
|
16
|
66.7%
|
11
|
24
|
RealtimeRPI RPI
|
16
|
66.7%
|
11
|
24
|
Pilight's Field of 64
|
16
|
66.7%
|
11
|
24
|
NCAA RPI
|
16
|
66.7%
|
11
|
24
|
Massey Rating
|
16
|
66.7%
|
11
|
24
|
Massey Power
|
16
|
66.7%
|
11
|
24
|
GaTech LRMC Classic
|
16
|
66.7%
|
11
|
31
|
Sonny Moore
|
15
|
62.5%
|
4
|
32
|
Sagarin ELO
|
14
|
58.3%
|
3
|
33
|
Warren Nolan NPI
|
9
|
37.5%
|
2
|
34
|
NCAA W-L %
|
7
|
29.2%
|
1
|
We had some excellent predictions this year over on the old rebkell.net boards. Though Charlie Creme of ESPN.com correctly picked all 64 teams this year as usual, the winner by all three scoring metrics (tied with Creme in the Borda and Paymon methods for 1st, outright winner on the Sum of Points method) was a user submitted bracket from SpaceJunkie.
BennettRank edged out the S-Factor for best numeric only method by the Borda count method (the way AP tallies its rankings).
Borda count method
Borda count points
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
Sum
|
|
1
|
SpaceJunkie
|
32
|
34
|
34
|
34
|
34
|
30
|
31
|
229
|
1
|
Creme's bracket
|
34
|
34
|
32
|
32
|
32
|
33
|
32
|
229
|
3
|
Matt5762 bracket
|
32
|
34
|
32
|
34
|
34
|
24
|
34
|
224
|
3
|
Creme, no bumps
|
34
|
31
|
33
|
31
|
31
|
33
|
31
|
224
|
5
|
CSM bracket
|
32
|
31
|
28
|
30
|
27
|
34
|
34
|
216
|
6
|
My bracket
|
29
|
28
|
21
|
28
|
30
|
24
|
31
|
191
|
7
|
BennettRank
|
20
|
28
|
27
|
29
|
26
|
28
|
21
|
179
|
8
|
S-Factor (2015 formula)
|
29
|
21
|
30
|
24
|
30
|
8
|
31
|
173
|
9
|
Omni Rankings
|
13
|
29
|
27
|
28
|
26
|
24
|
21
|
168
|
10
|
WayneBearCal
"Proper"
|
29
|
23
|
24
|
22
|
26
|
24
|
16
|
164
|
11
|
RealtimeRPI bracket
|
29
|
15
|
30
|
13
|
30
|
16
|
25
|
158
|
12
|
S-Factor (old blend)
|
29
|
17
|
20
|
22
|
23
|
16
|
25
|
152
|
12
|
Adjusted Stats EWP
|
29
|
24
|
12
|
28
|
12
|
31
|
16
|
152
|
14
|
Sagarin PURE_POINTS
|
13
|
28
|
24
|
24
|
21
|
24
|
16
|
150
|
15
|
Sagarin Rating
|
20
|
21
|
24
|
17
|
21
|
24
|
21
|
148
|
16
|
Massey Power
|
20
|
23
|
20
|
22
|
21
|
30
|
11
|
147
|
17
|
Omni bracket
|
9
|
21
|
27
|
17
|
23
|
13
|
21
|
131
|
18
|
Massey Rating
|
29
|
17
|
17
|
22
|
17
|
16
|
11
|
129
|
19
|
GaTech LRMC Classic
|
9
|
28
|
12
|
25
|
9
|
28
|
11
|
122
|
20
|
RealtimeRPI Power
|
13
|
11
|
17
|
11
|
15
|
24
|
25
|
116
|
21
|
D1SN "poll"
|
3
|
11
|
5
|
22
|
21
|
28
|
25
|
115
|
22
|
Pilight's Field of 64
|
29
|
13
|
17
|
9
|
17
|
8
|
11
|
104
|
23
|
GaTech LRMC Bayesian
|
9
|
15
|
8
|
17
|
12
|
24
|
16
|
101
|
24
|
GaTech LRMC(0)
|
20
|
8
|
17
|
7
|
12
|
8
|
27
|
99
|
25
|
Sagarin ELO
|
20
|
13
|
17
|
13
|
15
|
10
|
3
|
91
|
26
|
Sonny Moore
|
13
|
21
|
8
|
17
|
9
|
13
|
4
|
85
|
26
|
Sagarin GoldenMean
|
6
|
11
|
20
|
7
|
15
|
10
|
16
|
85
|
28
|
AP poll
|
2
|
8
|
3
|
11
|
3
|
28
|
21
|
76
|
29
|
RealtimeRPI RPI
|
29
|
8
|
6
|
5
|
9
|
5
|
11
|
73
|
30
|
Coaches poll
|
1
|
5
|
4
|
9
|
9
|
13
|
27
|
68
|
31
|
NCAA RPI
|
20
|
4
|
12
|
4
|
9
|
5
|
11
|
65
|
32
|
Warren Nolan RPI
|
20
|
3
|
12
|
4
|
9
|
5
|
11
|
64
|
33
|
Warren Nolan NPI
|
5
|
2
|
2
|
2
|
2
|
2
|
2
|
17
|
34
|
NCAA W-L %
|
4
|
1
|
1
|
1
|
1
|
1
|
1
|
10
|
The S-Factor was the best numeric only method by the Sum of Points method. I described the Sum of Points method this way in 2013.
Another way of expressing this method, in formula format:
Where
- xi is 2 if predicted team i’s seed matches actual team i’s seed, 1 if predicted team i is seeded within 1, and 0 if predicted team i is two or more seeds off;
- yi is 3 if actual team i’s seed is 1 through 6, 2 if actual team i’s seed is 7 through 12, and 1 if actual team i’s seed is 13 through 16;
- zi is 1 if actual team i was predicted in the tournament, 0 otherwise.
Baylor was generally believed to be the 1st place team that year and Prairie View A&M the 64th place team, so the sum is over all teams in the NCAA tournament.
Sum of points
Sum of points
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
Sum
|
|
1
|
SpaceJunkie
|
63
|
30
|
57
|
27
|
41
|
14
|
21
|
253
|
2
|
Creme's bracket
|
64
|
30
|
54
|
26
|
40
|
16
|
22
|
252
|
3
|
Matt5762 bracket
|
63
|
30
|
54
|
27
|
41
|
12
|
23
|
250
|
4
|
Creme, no bumps
|
64
|
29
|
55
|
25
|
39
|
16
|
21
|
249
|
5
|
CSM bracket
|
63
|
29
|
50
|
23
|
36
|
18
|
23
|
242
|
6
|
S-Factor (2015 formula)
|
62
|
22
|
51
|
17
|
38
|
8
|
21
|
219
|
7
|
My bracket
|
62
|
25
|
41
|
19
|
38
|
12
|
21
|
218
|
8
|
RealtimeRPI bracket
|
62
|
20
|
51
|
14
|
38
|
11
|
19
|
215
|
9
|
Omni Rankings
|
60
|
28
|
43
|
19
|
30
|
12
|
18
|
210
|
9
|
BennettRank
|
61
|
25
|
43
|
20
|
30
|
13
|
18
|
210
|
11
|
WayneBearCal
"Proper"
|
62
|
23
|
42
|
16
|
30
|
12
|
17
|
202
|
12
|
Sagarin PURE_POINTS
|
60
|
25
|
42
|
17
|
28
|
12
|
17
|
201
|
13
|
Adjusted Stats EWP
|
62
|
24
|
38
|
19
|
25
|
15
|
17
|
200
|
14
|
S-Factor (old blend)
|
62
|
21
|
40
|
16
|
29
|
11
|
19
|
198
|
14
|
Sagarin Rating
|
61
|
22
|
42
|
15
|
28
|
12
|
18
|
198
|
14
|
Massey Power
|
61
|
23
|
40
|
16
|
28
|
14
|
16
|
198
|
17
|
Omni bracket
|
59
|
22
|
43
|
15
|
29
|
10
|
18
|
196
|
18
|
GaTech LRMC Classic
|
59
|
25
|
38
|
18
|
24
|
13
|
16
|
193
|
19
|
Massey Rating
|
62
|
21
|
39
|
16
|
27
|
11
|
16
|
192
|
20
|
RealtimeRPI Power
|
60
|
16
|
39
|
13
|
26
|
12
|
19
|
185
|
20
|
GaTech LRMC Bayesian
|
59
|
20
|
37
|
15
|
25
|
12
|
17
|
185
|
22
|
Sonny Moore
|
60
|
22
|
37
|
15
|
24
|
10
|
15
|
183
|
23
|
Pilight's Field of 64
|
62
|
17
|
39
|
12
|
27
|
8
|
16
|
181
|
24
|
Sagarin ELO
|
61
|
17
|
39
|
14
|
26
|
9
|
14
|
180
|
25
|
Sagarin GoldenMean
|
58
|
16
|
40
|
11
|
26
|
9
|
17
|
177
|
25
|
GaTech LRMC(0)
|
61
|
13
|
39
|
11
|
25
|
8
|
20
|
177
|
27
|
RealtimeRPI RPI
|
62
|
13
|
36
|
10
|
24
|
6
|
16
|
167
|
28
|
D1SN "poll"
|
46
|
16
|
28
|
16
|
28
|
13
|
19
|
166
|
29
|
NCAA RPI
|
61
|
10
|
38
|
7
|
24
|
6
|
16
|
162
|
30
|
Warren Nolan RPI
|
61
|
9
|
38
|
7
|
24
|
6
|
16
|
161
|
31
|
Coaches poll
|
35
|
12
|
24
|
12
|
24
|
10
|
20
|
137
|
31
|
AP poll
|
36
|
13
|
22
|
13
|
22
|
13
|
18
|
137
|
33
|
Warren Nolan NPI
|
55
|
8
|
20
|
5
|
11
|
5
|
9
|
113
|
34
|
NCAA W-L %
|
51
|
7
|
16
|
4
|
8
|
4
|
7
|
97
|
The Bracket Matrix project analyzes bracket predictions for the men's game based on the Paymon method, which gives three points to every team selected in the field, two bonus points to every team with a correctly predicted seed, and one bonus point for every team predicted to be within 1 seed of the final selection.
SpaceJunkie and Charlie Creme tie for the best bracket prediction by this method. The S-Factor is the best numeric-only ranking algorithm by the Paymon method.
Paymon method
Paymon method
|
1
|
2
|
3
|
Sum
|
|
1
|
SpaceJunkie
|
189
|
60
|
57
|
306
|
1
|
Creme's bracket
|
192
|
60
|
54
|
306
|
3
|
Creme, no bumps
|
192
|
58
|
55
|
305
|
4
|
Matt5762 bracket
|
189
|
60
|
54
|
303
|
5
|
CSM bracket
|
189
|
58
|
50
|
297
|
6
|
S-Factor (2015 formula)
|
186
|
44
|
51
|
281
|
7
|
Omni Rankings
|
180
|
56
|
43
|
279
|
8
|
RealtimeRPI bracket
|
186
|
40
|
51
|
277
|
8
|
My bracket
|
186
|
50
|
41
|
277
|
10
|
BennettRank
|
183
|
50
|
43
|
276
|
11
|
WayneBearCal
"Proper"
|
186
|
46
|
42
|
274
|
12
|
Sagarin PURE_POINTS
|
180
|
50
|
42
|
272
|
12
|
Adjusted Stats EWP
|
186
|
48
|
38
|
272
|
14
|
Sagarin Rating
|
183
|
44
|
42
|
269
|
14
|
Massey Power
|
183
|
46
|
40
|
269
|
16
|
S-Factor (old blend)
|
186
|
42
|
40
|
268
|
17
|
Massey Rating
|
186
|
42
|
39
|
267
|
18
|
GaTech LRMC Classic
|
177
|
50
|
38
|
265
|
19
|
Omni bracket
|
177
|
44
|
43
|
264
|
20
|
Sonny Moore
|
180
|
44
|
37
|
261
|
21
|
Pilight's Field of 64
|
186
|
34
|
39
|
259
|
22
|
Sagarin ELO
|
183
|
34
|
39
|
256
|
23
|
GaTech LRMC Bayesian
|
177
|
40
|
37
|
254
|
24
|
RealtimeRPI Power
|
180
|
32
|
39
|
251
|
25
|
RealtimeRPI RPI
|
186
|
26
|
36
|
248
|
25
|
GaTech LRMC(0)
|
183
|
26
|
39
|
248
|
27
|
Sagarin GoldenMean
|
174
|
32
|
40
|
246
|
28
|
NCAA RPI
|
183
|
20
|
38
|
241
|
29
|
Warren Nolan RPI
|
183
|
18
|
38
|
239
|
30
|
Warren Nolan NPI
|
165
|
16
|
20
|
201
|
31
|
D1SN "poll"
|
138
|
32
|
28
|
198
|
32
|
NCAA W-L %
|
153
|
14
|
16
|
183
|
33
|
AP poll
|
108
|
26
|
22
|
156
|
34
|
Coaches poll
|
105
|
24
|
24
|
153
|
Labels:
2015,
Bracketologyology,
Charlie Creme,
metabracketology,
SpaceJunkie
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