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Using PageRank to rank ancestors in pedigrees

Printed From: Thoroughbred Village
Category: Horse Breeding - Public Forums
Forum Name: Breeding Forum
Forum Description: General discussion about thoroughbred horse breeding, pedigrees and bloodlines
URL: https://forum.thoroughbredvillage.com.au/forum_posts.asp?TID=69963
Printed Date: 27 Mar 2026 at 3:46pm
Software Version: Web Wiz Forums 12.05 - http://www.webwizforums.com


Topic: Using PageRank to rank ancestors in pedigrees
Posted By: brogers
Subject: Using PageRank to rank ancestors in pedigrees
Date Posted: 19 Dec 2023 at 6:45am
http://https://www.performancegenetics.com/post/ranking-the-importance-of-ancestors-using-pagerank-in-a-thoroughbred-pedigree-database" rel="nofollow - Ranking the Importance of Ancestors Using PageRank in a Thoroughbred Pedigree Database



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Abel Tasman...Keen Ice...Divisidero....Verrazano...Catchy...Carrick...Ivictory...


Replies:
Posted By: Gay3
Date Posted: 19 Dec 2023 at 7:53am
Anyone else Confused

This site can’t be reached

https’s DNS address could not be found. Diagnosing the problem.

DNS_PROBE_POSSIBLE


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It takes a wise man a lifetime to grow a tree and a fool five minutes to kill one.

Posted By: furious
Date Posted: 19 Dec 2023 at 8:17am
no I couldn't reach it either

Posted By: Plastic letters
Date Posted: 19 Dec 2023 at 8:50am
Me neither 

Posted By: djebel
Date Posted: 19 Dec 2023 at 9:52am
https://www.performancegenetics.com/post/ranking-the-importance-of-ancestors-using-pagerank-in-a-thoroughbred-pedigree-database%20" rel="nofollow - https://www.performancegenetics.com/post/ranking-the-importance-of-ancestors-using-pagerank-in-a-thoroughbred-pedigree-database

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reductio ad absurdum

Posted By: diomed
Date Posted: 02 Jan 2024 at 12:03pm
Rank Name [prog3] (ratio)

1 -  Northern Dancer (1961) [99,802] (14.4)
2 -  Mr Prospector (1970) [57,243] (3.9)
3 -  Danzig (1977) [38,886] (13.7)
4 -  Raise A Native (1961) [37,167] (7.2)
5 -  Nearctic (1954) [24,118] (27.8)
6 -  Nijinsky (1967) [22,911] (1.9)
7 -  Gold Digger (1962) [22,906] (351.4)
8 -  Sadler's Wells (1981) [21,354] (2.8)
9 -  Bold Ruler (1954) [21,278] (4.9)
10 -  Nasrullah (1940) [21,085] (6.4)
11 -  Natalma (1957) [20,268] (36.1)
12 -  Storm Bird (1978) [18,794] (4.1)
13 -  Fairy Bridge (1975) [18,158] (533.0)
14 -  Pas De Nom (1968) [17,904] (745.0)
15 -  Danehill (1986) [16,910] (2.8)
16 -  Razyana (1981) [16,862] (542.9)
17 -  Blushing Groom (1974) [16,577] (2.9)
18 -  Hail To Reason (1958) [15,954] (8.4)
19 -  Nureyev (1977) [14,904] (1.3)
20 -  Nearco (1935) [14,706] (3.1)
21 -  Buckpasser (1963) [14,581] (0.3)
22 -  Special (1969) [14,229] (2.0)
23 -  Seattle Slew (1974) [13,747] (1.7)
24 -  Sir Ivor (1965) [13,494] (0.5)
25 -  Hyperion (1930) [13,237] (2.4)
26 -  Terlingua (1976) [12,525] (194.7)
27 -  Lyphard (1969) [12,326] (1.5)
28 -  Roberto (1969) [12,322] (3.6)
29 -  Sharpen Up (1969) [11,586] (2.4)
30 -  Never Bend (1960) [11,326] (2.5)
31 -  Damascus (1964) [11,147] (1.5)
32 -  Habitat (1966) [10,936] (0.3)
33 -  Sir Gaylord (1959) [10,725] (4.0)
34 -  Green Desert (1983) [10,540] (4.7)
35 -  Native Dancer (1950) [10,461] (2.7)
36 -  Secretariat (1970) [10,461] (0.2)
37 - Flaming Page (1959) [10,398] (15.1)
38 -  Halo (1969) [10,335] (1.5)
39 -  Princequillo (1940) [10,263] (1.1)
40 -  Ribot (1952) [10,104] (3.2)
41 -  Red God (1954) [10,065] (10.1)
42 -  Turn-To (1951) [9,690] (7.7)
43 -  Mill Reef (1968) [9,258] (1.9)
44 - Vice Regent (1967) [8,818] (2.4)
45 -  Round Table (1954) [8,809] (0.9)
46 -  Caro (1967) [8,424] (1.0)
47 -  Foreign Courier (1979) [8,237] (456.6)
48 -  Runaway Bride (1962) [8,081] (133.7)
49 -  Ahonoora (1975) [7,944] (1.0)
50 -  Hoist The Flag (1968) [7,679] (0.9)
51 -  Storm Cat (1983) [7,631] (3.1)
52 -  In Reality (1964) [7,629] (1.5)
53 -  Riverman (1969) [7,521] (0.9)
54 -  Shirley Heights (1975) [7,458] (1.6)
55 -  Gainsborough (1915) [7,068] (4.3)
56 -  St Simon (1881) [6,992] (3.3)
57 -  Goofed (1960) [6,826] (46.7)
58 -  Herbager (1956) [6,776] (0.8)
59 -  Pharos (1920) [6,722] (5.9)
60 -  Miswaki (1978) [6,601] (0.2)
61 -  My Charmer (1969) [6,471] (94.2)
62 -  Phalaris (1913) [6,267] (5.3)
63 -  Busted (1963) [6,226] (3.4)
64 -  Teddy (1913) [6,204] (2.5)
65 -  Gone West (1984) [6,198] (5.4)
66 -  Fappiano (1977) [6,141] (7.9)
67 -  Court Martial (1942) [6,109] (0.8)
68 -  His Majesty (1968) [6,094] (0.7)
69 -  Fairway (1925) [6,066] (4.8)
70 -  Tom Fool (1949) [6,064] (1.6)
71 -  Urban Sea (1989) [5,994] (175.3)
72 -  Bold Reasoning (1968) [5,984] (56.5)
73 -  Prince John (1953) [5,844] (0.5)
74 -  Forli (1963) [5,829] (1.7)
75 -  Weekend Surprise (1980) [5,762] (100.1)
76 -  Blandford (1919) [5,737] (4.3)
77 -  Cosmah (1953) [5,721] (12.5)
78 -  Star Kingdom (1946) [5,645] (10.7)
79 -  Mint Copy (1970) [5,546] (503.2)
80 -  Miss Disco (1944) [5,467] (31.5)
81 -  Alydar (1975) [5,450] (0.4)
82 -  Bramalea (1959) [5,445] (216.8)
83 -  Graustark (1963) [5,438] (0.8)
84 -  Fair Trial (1932) [5,437] (2.8)
85 -  Tom Rolfe (1962) [5,197] (2.3)
86 -  Green Dancer (1972) [5,159] (0.4)
87 -  Machiavellian (1987) [5,129] (0.6)
88 -  Somethingroyal (1952) [5,121] (27.3)
89 -  Tudor Minstrel (1944) [5,040] (1.5)
90 -  Darshaan (1981) [5,032] (0.5)

From 667,326 horses.
prog3 is the number of times the horse appears in the third generation of pedigrees
ratio is the ratio of male to female 3rd generation horses through 1st gen sons/daughters
the great expansion in the thoroughbred population favours recent horses in the above
females are included, and their high position is almost always due to one or two sire sons


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