Uk‒w"8欝 th鵜 n "8欝 th鵜 o "o厩i c衣nh c栄c"p„"dcq"i欝m t瑛 m瓜v"8雨nh tr荏n‒p"*œ38雨nh). Cho m瓜t uk‒w"8欝 th鵜 G = (V, E), vtqpi"8„ V n "v壱r"eƒe"8雨pj"x "E n "v壱r"eƒe"e衣nh thu瓜e"8欝
th鵜. M厩i c衣nh e (e樺 継+"n "o瓜t t壱p bao g欝m eƒe"8雨nh 懸 (懸 樺 撃) x "s嘘 n逢嬰ng 8雨nh thu瓜c e: 1ø |e| ø |V|."g"e„"v嘘i thi吋u m瓜v"8雨nh x "v嘘k"8c"n "t医t c違 eƒe 8雨nh c栄c"8欝 th鵜.
Eƒe"e衣nh e 8逢嬰c g丑k"n "eƒe"e衣nh b壱c cao (hyper-edge).
X "f映<"ejq"8欝 th鵜 G1 8逢嬰c bi吋u di宇p"pj逢"vtqpi"J·pj"5040"J·pj"*C+"dk吋u di宇n d衣pi"8欝 th鵜 c栄a G10"Vtqpi"8„"G1 g欝o"e„":"8雨nh (V+"x "5"e衣nh b壱c cao (E+0"Vc"e„."
c衣nh e2 bao g欝m t壱r"8雨nh {v3, v4, v8} x v逢挨pi"v詠ejq"eƒe"c衣nh e”p"n衣ị
M瓜t uk‒w"8欝 th鵜 e„"vt丑pi"n逢嬰pi"n "o瓜t uk‒w"8欝 th鵜 pj逢pi"eƒe c衣nh c栄c"p„"8逢嬰c
iƒp"eƒe ikƒ"vt鵜 mjƒe"pjcw"8衣i di羽n cho tr丑pi"n逢嬰ng c栄a c衣pj0"Vj‒o"vj»pi"vkp"vt丑ng
n逢嬰pi"x q"8欝 th鵜 G."vc"e„"IŁ"?"*X."G."Y+."vtqpi"8„"Y"n "vt丑pi"n逢嬰ng c栄c"eƒe"e衣nh
v逢挨pi"泳ng trong Ẹ
A吋 bi吋u di宇n m嘘k"nk‒p"j羽 gi英c"8雨nh v (懸 樺 撃+"x "eƒe"e衣nh e (e樺 継+."vc"e„<
月(懸,結) =犯1,券x憲懸 樺 結
0,券x憲懸 鞄 結 (3.2)
T瑛 8„"vc"e„"oc"vt壱n H bi吋u di宇n m嘘k"nk‒p"j羽 gi英a t壱r"8雨nh V x "v壱p c衣nh E0"J·pj"
(A) (B)
J· pj"3.2. X "fつ vz biあu diいn uk‒w"8げ thお G1. (A) biあu diいn dTpi"8げ thお; (B) biあu diいn dTng ma trfn
D詠c"x q"月(懸,結)."8吋8q"tr丑pi"n逢嬰ng c栄a m瓜t 8雨nh v b医t k ."vc"e„<
穴岫懸岻 = デ結樺継拳岫結岻月(懸,結) (3.3)
Vtqpi"8„"y*g+"n "vt丑pi"n逢嬰pi"v逢挨pi"泳ng c栄c"8雨nh e: 拳(結) 樺 激. 穴岫懸岻 ej pj"n "vt丑ng
n逢嬰ng c栄a t医t c違eƒe"e衣nh nh壱n v n o"8雨nh c栄c"p„0
T瑛 8„."vc"e„" oc"vt壱n DV n " oc"vt壱p"8逢運pi"ejfiq"dk吋u di宇n tr丑pi"n逢嬰pi"8雨nh d岫懸岻
trong t壱p V c栄a 8欝 th鵜 GŁ.
A吋8q"u嘘n逢嬰pi"8雨nh c栄a m瓜t c衣nh e b医t k :
絞岫結岻 = デ懸樺撃月(懸,結) (3.4)
V壱y, vc"e„"oc"vt壱n DEn "oc"vt壱n 8逢運pi"ejfiq"bi吋u di宇n m壱v"8瓜絞岫結岻 c栄a eƒe"c衣nh trong E c栄a 8欝 th鵜 GŁ. e1 e2 e3 v1 1 0 0 v2 0 0 1 v3 1 1 0 v4 0 1 1 v5 0 0 1 v6 0 0 1 v7 0 0 1 v8 0 1 0
3.4. Pj„o"vjgq"ej栄8隠 (community)
Trong m瓜t m衣ng hay m瓜v"8欝 th鵜 ejq"vt逢噂c, m瓜v"pj„o"*eqoowpkv{+"n "o瓜t t壱p h嬰p c栄c"eƒe"8雨pj"o "eƒe"m院t n嘘i gi英c"eƒe 8雨nh trong pj„ovj·"f {"8員c j挨p"uq"x噂i nh英ng k院t n嘘i n pi"n飲o gi英c"eƒe"8雨pj"p {"x噂k"eƒe"8雨nh thu瓜e"pj„o"mjƒe0"
E„"pjk隠w"rj逢挨pi"rjƒr"mjƒe"pjcw"8吋 rj¤p pj„o"ejq"eƒe"8雨nh trong 8欝 th鵜 e„"
tr丑pi"n逢嬰ng. 雲 8¤{."8隠 v k"ej雨 v„o"v逸v"rj逢挨pi"rjƒr"8逢嬰e"8隠 xu医t trong [17]. [17]
z¤{" f詠ng gi違i thu壱v" zƒe" 8鵜nh pj„o d詠c" vt‒p rjfir" 8q" e衣nh c鰻 chai (edge betweeness).
Ikƒ"vt鵜 c衣nh c鰻 chai c栄a m瓜t c衣nh p q"8„"n "u嘘 8逢運pi"8k"pi逸n nh医t gi英a hai
8雨nh b医t k trong 8欝 th鵜 o "pj英pi"8逢運pi"8k"pi逸n nh医v"p {"e„ 8k"swc"e衣nh 8cpi"zfiv. N院u gkƒ"vt鵜 c衣nh c鰻 chai c栄a m瓜t c衣pj"n "ecq."vj·"e衣pj"p {"e pi"ik嘘pi"pj逢"n "o瓜t
p¿v"e鰻 chai trong vi羽c di chuy吋n t瑛 m瓜t ph亥n c栄c"8欝 th鵜 8院p"eƒe"rj亥p"mjƒe0"Pj逢"
v壱y, n院u lo衣i b臼 eƒe"e衣pj"e„"ikƒ"vt鵜 c衣nh c鰻 ejck"ecq."vj·"m院t qu違 vjw"8逢嬰e"n "eƒe" pj„o"vƒej"t運ị
Ban 8亥u, [17] coi t医t c違 eƒe"8雨pj"n "épi"o瓜v"pj„o"ucw"8„"rj¤p"chia ej¿pi" vj pj"jck"pj„ọ"dc"pj„ọ"È0 A院n khi m厩k"pj„o"ej雨 bao g欝m m瓜v"8雨nh duy nh医t.
A吋 bi院t s嘘 n逢嬰pi"pj„o"p q"n "v嘘k"逢w"ejq"swƒ"vt·pj"rj¤p"ejkc."[17] 8q"n逢運ng ch医t
n逢嬰ng c栄c"eƒe"pj„o"8逢嬰c chia d詠c"vt‒p"rjfir"8q"oqfwnctkv{"[17]. Modularity n茨m trong kho違ng [0,1], n院u modularity b茨pi"mj»pi"vj·"e„"pij c"n "eƒe"pj„o"vt‒p"ej雨 8逢嬰e"iqo"pj„o"ik嘘pi"pj逢"n "pi磯w"pjk‒p."p院u modularity b茨ng m瓜v"e„"pij c"n "eƒe" pj„o"vjw"8逢嬰e"vƒej"dk羽t nhau l噂n.
[17] e„"逢w"8k吋o"n "mj»pi"e亥n ph違k"8鵜pj"pij c"vt逢噂c s嘘 n逢嬰pi"8雨nh trong m瓜t
pj„o. [8] ƒr"f映pi"rj逢挨pi"rjƒr"8逢嬰e"p‒w"p {"8吋 rj¤p"pj„o"eƒe"e映m t瑛 vtqpi"v k"
li羽u, m嘘i quan h羽 gi英c"eƒe"e映m t瑛n "o嘘i quan h羽 ng英pij c"ik英c"ej¿pi0"X·"x壱y, sau
mjk"rj¤p"pj„ọ"eƒe"e映m t瑛 thu瓜e"éng m瓜v"pj„o s胤e„"o嘘i quan h羽 ng英pij c"o壱t thi院t v噂i nhau, t泳e"n ej¿pi"e„"vj吋 di宇n t違épi"o瓜t ch栄8隠 p q"8„"*x "f映pj逢"o瓜t s詠
Ej逢挨pi"60 RJ姶愛PI"RJèR"A陰 XU遺T
Ej逢挨pi"6 vt·pj"d {"UgokTcpm"x "hai rj逢挨pi"rjƒr"t¿v"vt ej"eƒe"e映m t瑛 mj„c"ban
8亥u o 8隠 v k" 8隠 xu医t. M映c 4.1 o»" v違 v隠 rj逢挨pi" rjƒr" e栄a [8] *8逢嬰c g丑k" n "
SemiRank), m瓜t h羽 th嘘pi"t¿v"vt ej"c映m t瑛 mj„c"f詠c"x q"pi英 pij c" o "8隠 v k"e違i ti院n. Hck"rj逢挨pi"rjƒr"8逢嬰c 8隠 xu医v"8吋 v<pi"jk羽u su医t c栄c"UgokTcpm<"rj逢挨pi"rjƒr"
c映m t瑛 tr丑pi" v¤o x " rj逢挨pi" rjƒr"s穎 d映ng 8員e" 8k吋o" vj»pi" vkp"c栄a c映m t瑛 mj„c" 8逢嬰e"vt·pj"d {"vtqpi"O映c 4.2 x "O映c 4.30"X "ew嘘k"épi"n "O映c 4.4, ti隠n x穎 n#"f英
li羽w"vt逢噂c khi ti院p"j pj"t¿v"vt ej"v瑛mj„c0
4.1 SemiRank
UgokTcpm"n "rj逢挨pi"rjƒr t¿v"vt ej"e映m t瑛 mj„c"f詠c"vt‒p t壱p eƒe c映m t瑛 mj„c"dcp" 8亥w" x " o嘘i quan h羽 ng英 pij c" ik英c" eƒe"c映m t瑛 vtqpi" v k" nk羽ụ M映e" vk‒w" e栄a
UgokTcpm"n "v·o"mk院o"eƒe"e映m t瑛 mj„c"e„"o嘘i quan h羽 ng英 pij c"v逢挨pi"泳ng v噂i nh英ng c映m t瑛mj„c"dcp"8亥w"p {0"SemiRank ti院p"j pjswc"eƒe"d逢噂e"8逢嬰c minh h丑a
pj逢"vtqpi"J·pj"4.1 sau:
J·nh 4.1. Sw{"vt·pjt¿v"vt ej"eつm tなmj„c"vtqpi SemiRank
1. Iƒp"eƒe"d k"xk院t Wikipedia (g丑i t逸v"n "Ykmk+"v逢挨pi"泳pi"ejq"eƒe"c映m t瑛 trong
x<p" d違n: A吋 e„" vj吋 v pj" o嘘i quan h羽 ng英 pij c" ik英c" eƒe"c映m t瑛 vtqpi" v k" nk羽u,
UgokTcpm"iƒp"eƒe"c映m t瑛e„"vtqpi"v k"nk羽w"x q"eƒe"d k"xk院t v逢挨pi"泳ng trong Wiki, cƒe"d k"xk院t p {"fk宇n t違 n瓜i d映pị"#"pij c"x "eƒe"x医p"8隠 nk‒p"swcp"8院n eƒe"c映m t瑛 p {. Do UgokTcpm" mj»pi 8隠 c壱r" 8院n rj逢挨pi" rjƒr" v·o" mk院o" eƒe" d k" xk院t Wiki
v逢挨pi"泳pi"ejq"eƒe"c映m t瑛 , p‒p"mjk"jk羽n th詠c, 8隠 v k8«"ej丑n m瓜v"rj逢挨pi"rjƒr"mjƒe" 8逢嬰e"vt·pj"d {"vtqpi"O映c 5.2. 雲 8¤{."ej雨 e„"pj英ng c映m t瑛e„"vj吋v·o"vj医y 8逢嬰c d k"
vi院v"Ykmk"v逢挨pi"泳ng v噂k"p„"vj·"o噂k"8逢嬰e"zgo"n "quan tr丑pi"x "8逢嬰c gi英 l衣k"8吋 xem
zfiv"mj違p<pi"vt荏vj pj"c映m t瑛 kj„c0
Sau khi 8«"iƒp"eƒe"d k"dƒq"Ykmk"ejq"eƒe"c映m t瑛vtqpi"v k"nk羽u, cho m厩i c映m t瑛, SemiRank s穎 d映pi"rj逢挨pi"rjƒr"8隠 c壱p trong [22] 8吋 l丑c m瓜t d k"xk院v"v逢挨pi"泳ng v隠 pij c" x噂i m瓜t c映m t瑛 8cpi"zfiv. Chi ti院t c栄c" rj逢挨pi"rjƒr" ik違i quy院t nh壱p nh茨ng
8逢嬰e"vt·pj"d { trong M映c 3.2.
2. Aq"n逢運ng m嘘i quan h羽 ng英 pij c gi英c"eƒe"e員p c映m t瑛: Sau khi 8«"v·o"mk院m
8逢嬰e"eƒe"d k"xk院v"Ykmkrgfkc"v逢挨pi"泳pị"UgokTcpm"v pj"vqƒp"o嘘i quan h羽 ng英pij c"
gi英a hai c映m t瑛 b茨pi"eƒej"v pj"o嘘i quan h羽 ng英 pij c"ik英c"jck"d k"xk院v"v逢挨pi"泳ng c栄c"ej¿pi0"Rj逢挨pi"rjƒr"v pj"o嘘i quan h羽 ng英pij c gi英c"jck"d k"xk院t e pi"ej pj"n " rj逢挨pi"rjƒr"8逢嬰c s穎 d映ng cho vi羽c gi違i quy院t nh壱p nh茨pi"8逢嬰e"8隠 c壱p trong M映c 3.2. K院t qu違ucw"swƒ"vt·pj"p {."UgokTcpm"vjw"8逢嬰c uk‒w"8欝 th鵜 e„"vt丑ng s嘘 G = (V, E, W) vtqpi"8„"V n "v壱r"eƒe"c映m t瑛jc{"eƒe"d k"xk院v"Ykmkrgfkc"v逢挨pi"泳ng c栄c"p„."E
n "v壱r"eƒe c衣pj"8衣i di羽n cho m嘘i quan h羽 ng英 pij c"ik英c"ej¿pị"W n "v壱p tr丑ng s嘘
c栄c"eƒe"e衣pj"v逢挨pi"泳pi0"N¿e"p {"uk‒w"8欝 th鵜 G ch雨 bao g欝o"eƒe"e衣nh b壱c hai, th吋
hi羽n m嘘i quan h羽 gi英a hai c映m t瑛 ttqpi"v k"nk羽ụ
3. Aq"n逢運ng m嘘i quan h羽 ng英pij c"ejq"pj„o"eƒe"e映m t瑛: T衣k"d逢噂c th泳 ba c栄a
swƒ"vt·pj"t¿v"vt ej"v瑛mj„c."UgokTcpm"v pj"vqƒp"eƒe"e衣nh b壱c cao c栄c"8欝 th鵜 G. A吋e„"
th吋 b逸v" 8逢嬰e" eƒe" o嘘i quan h羽 di宇n ra gi英a m瓜v" pj„o" eƒe"c映m t瑛 v噂i nhau,
UgokTcpm"ƒr"d映pi"rj逢挨pi"rjƒr [17] 8吋 iqo"pj„o"eƒe"c映m t瑛e„"o嘘i quan h羽 ng英 pij c" vj¤p" vjk院t l衣i v噂i nhaụ Pj逢挨pi" rjƒr" iqo" pj„o"[17] 8逢嬰e" vt·pj" d {" vtqpi"
M映c 3.4.
N¿e"p {."o厩k"pj„o"8逢嬰e"eqk"pj逢"n "o瓜t c衣nh b壱e"ecq"vtqpi"8欝 th鵜 G. Tr丑ng
n逢嬰ng c栄c"pj„o"8逢嬰e"v pj"d茨ng trwpi"d·pj"e栄a t医t c違 eƒe"o嘘i quan h羽 ng英 pij c"
b壱e"jck"o "e違 hai c映m t瑛 8隠u thu瓜e"pj„o"8cpi"zfiv<
拳(結) = 糠
Vtqpi"8„拳 樺 激, e樺 継, 結 n "u嘘 n逢嬰pi"8雨pj"v逢挨pi"泳ng thu瓜c c衣nh e x "結件倹n "
c衣nh b壱c hai c栄a hai 8雨nh i x j thu瓜e"épi"e衣nh b壱c cao ẹ 糠 半0n "vj»pi"u嘘8吋 zƒe" 8鵜nh t亥m quan tr丑ng c栄a c衣nh b壱c cao e so v噂k"eƒe"e衣nh nh鵜rj¤p"結件倹c栄c"p„.
Ucw"d逢噂e"dc."UgokTcom"8«"z¤{"f詠ng m瓜v"8欝 th鵜 ng英pij c"d壱e"ecq"e„"vt丑ng s嘘8衣i di羽p"ejq"v k"nk羽w"o "p„"8cpi"zfit.
4. T¿v"vt ej"eƒe"e映m t瑛 e„"vtqpi"vk‒w"8隠 n o"v壱p eƒe"c映m t瑛mj„c"dcp"8亥u: Nj逢" 8«"p„k"荏 vt‒p."o映e"vk‒w"e栄c"UgokTcpm"n "v·o"mk院o"eƒe"c映m t瑛 mj„c"e„"o嘘i quan h羽
ng英pij c"v逢挨pi"8欝ng v噂i nh英ng c映m t瑛mj„c"dcp"8亥ụ Nh英ng c映m t瑛mj„c"dcp"8亥u
p {"8逢嬰c l医y trong vk‒w"8隠 c栄c"v k"nk羽w0"Ucw"mjk"8«"iƒp"eƒe"d k"xk院v"Ykmkrgfkc"v逢挨pi" 泳pi"ejq"eƒe c映m t瑛 vtqpi"v k"nk羽u, nh英ng c映m t瑛 p q"8逢嬰e"v·o"vj医{"vtqpi"vk‒w"8隠 8逢嬰e"eqk"pj逢"thu瓜c t壱r"eƒe"e映m t瑛mj„c"dcp"8亥ụ
5. Aƒpj"ikƒ"o嘘i quan h羽 ng英pij c: 雲8¤{."xk羽e"v·o"mk院o"eƒe"c映m t瑛mj„c"ejq" v k"nk羽u d詠c"x q"c映m t瑛mj„c"dcp"8亥w"x "f詠a x quk‒w"8欝 th鵜 ej pj"n "o瓜t d衣ng c栄a
d k" vqƒp" j丑e" dƒp" ikƒo" uƒv (semi-ngctpkpi+0" A吋 gi違i quy院v" d k" vqƒp" c栄a o·pj."
SemiRank s穎 d映ng m瓜t gi違k" rjƒr" lan truy隠n 8逢嬰c 8隠 xu医t trong [25] g丑k" n "
PhraseRank. L¿e"p {"eƒe"8雨nh ch泳a c映m t瑛mj„c"dcp"8亥w"e„"ikƒ"vt鵜 b茨pi"3."eƒe"8雨nh
e”p"n衣k"e„"ikƒ"vt鵜 b茨ng 0. T衣i m厩k"d逢噂c lan truy隠p."ikƒ"vt鵜 c栄a t医t c違eƒe"8雨pj"vtqpi"8欝
th鵜 8隠w"8逢嬰e"v pj"n衣k0"X "uau mjk"8衣v"8院n tr衣pi"vjƒk"d瑛ng, nh英pi"8雨pj"e„"ikƒ"vt鵜 cao nh医v"8逢嬰c ch丑p"n o"t壱r"eƒe"t瑛 mj„c 8衣i di羽p"ejq"v k"nk羽u0"Rj逢挨pi"rjƒr"ncp"vtw{隠n
8逢嬰e"vt·pj"d {"vtqpi"rj逢挨pi"vt·pj"ucw:
血茅= 紅 血茅+ 岫1伐 紅岻検 (4.2)
Cho t壱p {v1, v2."È."xt, vt+1."È."xn}, v噂i t ph亥n t穎8亥w"vk‒p"n "eƒe"c映m t瑛 mj„c" dcp"8亥u:
‚ f n "xfiev挨"ch泳a ikƒ"vt鵜8ƒpj"ikƒ"ejq"eƒe"8雨nh trong t壱p V
‚ {"n "xfiev挨"8ƒpj"f医u eƒe"e映m t瑛mj„c"dcp"8亥u:
‚ 紅n "ikƒ"vt鵜e¤p"d茨ng [0,1]. 紅 th吋 hi羽n m嘘i v逢挨pi"swcp gi英c"ikƒ"vt鵜 lan truy隠p"x " ikƒ"vt鵜 b違q"8違m vak"vt”"v瑛mj„c"dcp"8亥u c栄a m瓜t c映m t瑛mj„c"dcp"8亥ụ
‚ 拘n "oc"vt壱n quan h羽 gi英c"eƒe"8雨nh trong V.
拘8逢嬰e"v pj"pj逢"ucw<
= DV伐1 2エ HWDE伐1HTDV伐1 2エ (4.3)
Vtqpi"8„ :
‚ H n "oc"vt壱n bi吋u di宇n m嘘i quan h羽 gi英c"eƒe"8雨pj"x "eƒe"e衣pj"vtqpi"8欝 th鵜 G.
‚ DVn "oc"vt壱p"8逢運pi"ejfiq"ej泳a tr丑pi"n逢嬰ng c栄c"8雨nh trong G.
‚ DEn "oc"vt壱p"8逢運pi"ejfiq"ej泳a s嘘n逢嬰pi"8雨nh c栄a c衣nh Ẹ
‚ W n "oc"vt壱p"8逢運pi"ejfiq"ej泳a tr丑pi"n逢嬰ng c栄a c衣pj"vtqpi"8欝 th鵜.
Gi違i thu壱t PhraseRank T瑛ng ph亥n t穎肯(懸件,懸倹) trong 拘e„"f衣pi"pj逢"ucw< 肯(懸件,懸倹) = 1 紐穴懸件紐穴懸倹デ 拳結 絞結 月(懸件,結)月(懸倹,結) 結樺継 (4.4)
Vtqpi"8„"肯(懸件,懸倹) n "o嘘i quan h羽 gi英c"jck"8雨nh vi x "vj. 雲 8¤{."[25] 8« v pj"n衣i m嘘i quan h羽 ng英 pij c"gi英c"jck"8雨nh vi x "vj d詠c"vt‒p"v医t c違 eƒe"e衣pj"o "ej¿pi"épi"
thu瓜c v隠 trong uk‒w"8欝 th鵜. X "x·"eƒe"o嘘i quan h羽 trong uk‒w"8欝 th鵜 n "o嘘i quan h羽
ng英pij cp‒p"o嘘i quan h羽 trong 拘 e pi"x磯p"n "o嘘i quan h羽 ng英 pij c0"N¿e"p {"拘 ej pj"n "o瓜v"8欝 th鵜 8挨p"ik違p"e„"e衣nh b壱c hai ch泳a m嘘i quan h羽 ng英 ngh a gi英a eƒe" 8雨pj0"X "swƒ"vt·pj"ncp"vtw{隠p"8逢嬰c th詠c hi羽p"vt‒p"o瓜v"8欝 th鵜 8挨p"ik違n. Gi違i thu壱t
8ƒpj"ikƒ"v亥m quan tr丑ng c栄a t瑛RjtcugTcpm"8逢嬰c th詠c hi羽p"pj逢"J·pj"604:
GiVi thuft PhraseRank(X.ẹ{. ,耕)
AZw"x q :
Tfr"8えnh V, vずi t phZn tぬ8Zw"vk‒p"n "eƒe"cつm tなmj„c"dcp"8Zu, n = |V|.
y : tfr"8ƒpj"fXw"eƒe"cつm tなmj„c"dcp"8Zu vずi :
yi = 1, 1 ø i øv"x "{j = 0, t < j ø n
耕: ikƒ"vtお dなng. GiVi thuft dなngkhi sばvjc{"8ごi cてa eƒe"8えnh sau mざi
d⇔ずc lpp dfi"j¬p"耕.
e: ma trfn biあu diいn mぐi quan hう ngのpij c"ikのc"eƒc cつm tなvtqpi"x<p"
(1-紅): hjng sぐ cじpi"vj‒o"pxu cつm tなn "vなmj„c"dcp"8Zụ
A亥u ra:
血: ikƒ"vtお8⇔ぢe"v pj"ejq"oざi cつm tな
GiVi thuft: 血0 =検 1 k = 1 2 REPEAT 3 for vi : f k 4 血件倦 =紅 茅 デ懸倹樺撃肯(懸件,懸倹)血倹倦伐1 5 Nxu vi n "vなmj„c"dcp"8Zu : 血件倦 = 血件倦 + (1伐 紅) 6 稿ä MAX (血件倦 伐 血件倦伐1+."hqt"2"ø"k"ø"p 7 k ä k + 1 8 UNTIL 稿 < 耕 9
J· pj"4.2. GiVi thuft PhraseRank trong SemiRank
X " fつ: J·pj"4.3 n " o瓜v" x " f映 minh h丑a m瓜t s嘘 d逢噂c l員p trong gi違i thu壱t PhraseRank.
Cho m瓜v"8欝 th鵜 bao g欝o"7"8雨nh (hay c映m t瑛+"pj逢"j·pj"x胤."eƒe"e衣pj"vtqpi"8欝
th鵜 th吋 hi羽n m嘘i quan h羽 ng英 pij c"ik英a hai 8雨nh b医t k x "ej¿pi"e„"vt丑pi"n逢嬰ng
mjƒe"pjcw0"A雨nh v1 x "8雨nh v2 n "jck"e映m t瑛mj„c"dcp"8亥ụ Kh荏k"8亥u."d逢噂c 0, v1,v2
8逢嬰e"iƒp"ikƒ"vt鵜 b茨pi"3."eƒe"8雨pj"e”p"n衣k"8逢嬰e"iƒp"ikƒ"vt鵜 0 (J·pj"604."j pi"3). Giƒ"
tr鵜 c栄c"eƒe"8雨pj"8逢嬰e"v pj"n衣i qua m厩k"d逢噂c l員p *J·pj"604."j pi 4). T衣k"d逢噂e"3."ikƒ"
tr鵜 c栄a m瓜v"8雨nh ph映 thu瓜e"x "eƒe"8雨nh k隠 v噂k"p„*J·pj"604."j pi"7+0"Eƒe"8雨nh v3 x "
v5 ucw"d逢噂e"2"e„"ikƒ"vt鵜 b茨pi"2."p‒p"ikƒ"vt鵜 c栄a v4 8逢嬰c lan truy隠n t瑛 v1 x "v2 vj»pi"
qua m嘘i quan h羽 ng英 pij c"ik英c"p„"x噂k"eƒe"8雨pj"p {0"N¿e"p {"ikƒ"vt鵜 c栄a v4 b茨ng t鰻pi" ikƒ" vt鵜 lan truy隠n t瑛 v1 vjgq" 8逢運ng {v1, v4} x " ikƒ" vt鵜 lan truy隠n t瑛 v2 theo
8逢運ng {v2, v4}. Ikƒ"vt鵜 lan truy隠n t瑛 {v1, v4} hay {v2, v4} ph映 thu瓜e"x q"ikƒ"vt鵜 o " 8雨nh v1 x "v2 e„"8逢嬰e"x "o嘘i quan h羽 gi英c"ej¿pi"x噂i v40"V逢挨pi"t詠 ejq"8雨nh v2,
8雨nh v4 ucw"d逢噂e"2"e„"ikƒ"vt鵜 b茨pi"2."p‒p"v2 ch雨 nh壱p"ikƒ"vt鵜 lan truy隠n t瑛 v1 theo
8逢運ng {v1, v2}. Vw{"pjk‒p."fq"v2 n "o瓜t c映m t瑛 mj„c"dcp"8亥w"p‒p"v2 8逢嬰c c瓜ng
vj‒o"o瓜t h茨ng s嘘 {v2}, *J·pj"604."j pi"8+0"V逢挨pi"v詠ejq"eƒe"8雨pj"e”p"n衣ị
T衣i b逢噂e"4."8雨nh v5 ucw"d逢噂c 1 b茨ng 0, t瑛8„"ikƒ"vt鵜 c栄a v4 ph映 thu瓜e"x q"o嘘i
b茨pi"ikƒ"vt鵜 t鰻ng h嬰p c栄c"jck"8逢運ng lan truy隠n {v1, v2} x "{v2}."p‒p"v4 nh壱p"8逢嬰c
ikƒ"vt鵜 t瑛 v2 theq"8逢運ng lan truy隠n {v1, v2, v4} x "{v2, v4}. Pj逢"x壱y v4 nh壱p"8逢嬰c
ikƒ"vt鵜 t鰻ng h嬰p t瑛jck"8逢運ng lan truy隠n qua v2."8逢運ng lan truy隠n t瑛 v1 vj»pi"swc"v2
8院n v4 x "8逢運ng lan truy隠n t瑛 v20"V逢挨pi"v詠ejq"ikƒ"vt鵜 v4 nh壱p"8逢嬰c t瑛 v1 x "v3.
J· pj"4.3. Minh hがa mじt sぐd⇔ずc lpp trong giVi thuft PhraseRank ejq"8げ thお
bao gげo"7"8えpj0"Eƒe"8⇔ぜpi"8fm nhTv"jc{"pfiv"eht thあ hiあn trがpi"n⇔ぢpi"mjƒe"pjcw"
cてc"eƒe"eTpj"vtqpi"8げ thお0"x3x "x4"n "jck"8えnh khぞk"8Zw0"}xk.È.xlʼ"n "8⇔ぜpi"8i lan truyzp"ikƒ"vtお xuXv"rjƒv"vなxk"x "8xp"xl0"}xkʼ"n "8えnh xuXv"rjƒv."vTk"8¤{"oじt hjng sぐ
8⇔ぢc cじpi"vj‒o0
T衣k"d逢噂e"4"v pj"ejq"8雨nh v2."v逢挨pi"v詠pj逢"8雨nh v4, v2 nh壱p"8逢嬰e"ikƒ"vt鵜vj»pi" swc"8雨nh v1 vjgq"8逢運ng lan truy隠n {v2, v1, v2} x "{v1, v2} x "pj壱p"8逢嬰e"ikƒ"vt鵜 lan truy隠p"vj»pi"v4 n "{v2, v4, v2}, {v1, v4, v2} *J·pj"604."j pi"7+. Fq"8雨nh v2 n "v瑛 mj„c"dcp"8亥w"p‒p"v2 8逢嬰c c瓜pi"vj‒o"o瓜t h茨ng s嘘 {v2} (J·pj"604."j pi"8). V壱y v2 ph映 thu瓜e" x q"j茨ng s嘘 c瓜pi"vj‒o, ikƒ"vt鵜 lan truy隠n t瑛 8雨nh v1 vj»pi"swc"pj英ng
t瑛ej pj"p„."8k"swc"eƒe"8雨pj"mjƒe"vtqpi"8欝 th鵜x "swc{"x隠 c栄ng c嘘p„0"V pj"v逢挨pi"v詠 ejq"eƒe"8雨pj"e”p"n衣k"vtqpi"8欝 th鵜.
Swƒ"vt·pj"n員p l衣k"v逢挨pi"v詠ejq"d逢噂c 3 x "eƒe"d逢噂c ti院r"vjgq"8院n khi s詠vjc{"8鰻i
ikƒ"vt鵜 t衣i m丑k"8雨nh nh臼 j挨p"ikƒ"vt鵜 d瑛ng (耕) *J·pj"604."j pi";+."n¿e"p {"ik違i thu壱t d瑛ng l衣ị
Nhfp"zfiv< t瑛x "f映vt‒p"e„"jck"pj壱p"zfiv"ucw<
‚ Ikƒ"vt鵜 c栄c"8雨pj"mj»pi"n "m瓜t c映m t瑛mj„c"dcp"8亥u ph映 thu瓜e"x q"o嘘i quan h羽
ng英 pij c"v噂k"eƒe"e映m t瑛 mj„c"dcp"8亥u, s詠 ph映 thu瓜e"p {"e„"vj吋 n "vt詠c ti院p ho員e"ikƒp"vk院r"vj»pi"swc"eƒe"e映m t瑛mjƒe"e„"vtqpi"v k"nk羽u Vtqpi"x "f映vt‒p."v4 ph映 thu瓜e"x q"o嘘i quan h羽 v噂i v1 x "v2 vj»pi"swc"eƒe"8逢運ng {v1, v2, v4}, {v2,
x6ʼ.È0
‚ Ikƒ"vt鵜 c栄c"8雨pj"n "m瓜t c映m t瑛mj„c"dcp"8亥u ph映 thu瓜c x q"dc"{院u t嘘: h茨ng s嘘
c瓜pi"vj‒o"8衣i di羽p"ejq"xck"vt”"n "e映m t瑛 mj„c"dcp"8亥u c栄c"p„."o嘘i quan h羽
ng英 pij c"v噂k"eƒe"e映m t瑛 mj„c"dcp"8亥u mjƒe"x "ph映 thu瓜e"x q"ikƒ"vt鵜 gia c嘘. Giƒ"vt鵜 gia c嘘 ph映 thu瓜c x q m嘘i quan h羽 ng英pij c"ik英a c映m t瑛mj„c"dcp"8亥u
8cpi"zfiv"x噂k"eƒe"e映m t瑛 e”p"n衣i b医t k吋 eƒe"e映m t瑛 p {"n "mj„c"dcp"8亥u hay
mj»pi0"X "f映 pj逢"8雨nh v2 t衣k"d逢噂c 2 c栄c"x "f映 vt‒p."ikƒ"vt鵜 v2 ph映 thu瓜e"x q"
h茨ng s嘘 c瓜pi"vj‒ọ"o嘘i quan h羽 v噂i mj„c"dcp"8亥u v1 x "ikƒ"vt鵜 t詠 gia c嘘ej pj" p„. Gkƒ"vt鵜 t詠 gia c嘘p {"xu医v"rjƒv"v瑛 v2 vj»pi"swc v4 x "v1 theo eƒe"8逢運ng lan truy隠n {v2, v4, v2} x "}x4."x3."x4ʼ. X·"x壱y v2 ph映 thu瓜e"x q"o嘘i quan h羽 v噂i v4 x "v1.
N院u ch雨 uq"uƒpj"eƒe"8雨nh mj„c"dcp"8亥u v噂i nhau, x·"o厩k"8雨nh mj„c"dcp"8亥u
8隠u gia c嘘 ejq"ej pj p„."p‒p"荏 8¤{."8隠 v k"d臼 swc"ikƒ"vt鵜 p {"x "eqk"o厩k"8雨nh ch雨 ph映 thu瓜e"x q"jck"{院u t嘘 h茨ng s嘘 c瓜pi"vj‒o" x " o嘘i quan h羽 v噂i nh英ng
8雨pj"dcp"8亥w"e”p"n衣ị
雲8¤{."vtqpi"rj衣m vi c栄a lu壱p"x<p."8隠v k"ej雨zgo"zfiv"vt逢運ng h嬰p t¿v"vt ej"eƒe"
c映m t瑛mj„c"v瑛 nh英ng c映m t瑛 kh„cdcp"8亥ụ N院u h茨ng s嘘 c瓜pi"vj‒o"8吋 8違m b違o vai
t瑛mj„c"dcp"8亥w"nw»p"ejk院m nh英ng v鵜 vt "8亥w"vk‒p."z院r"vjgq"8瓜 逢w"vk‒p v隠 ikƒ"vt鵜 t瑛 ecq"8院n th医p0"X "p院u s嘘 n逢嬰ng c映m t瑛 dcp"8亥u p {"l噂p"j挨p"u嘘 n逢嬰ng c映m t瑛 mj„c"
c亥n l医{"vj·"v壱r"eƒe"e映m t瑛 mj„c"ucw"épi"p {"nw»p"thu瓜c nh英ng c映m t瑛 dcp"8亥ụ 雲 8¤{"eƒe"e映m t瑛 mj„c"ucw"épi"8逢嬰c t衣o ra t瑛 s詠 k院t h嬰p gi英a ng英 pij c"x "pj英ng
8員e"v pj"e„"vt逢噂e"8„"e栄a c映m t瑛mj„c"dcp"8亥ụ Jc{"p„k"mjƒe"j挨p"o瓜t c映m t瑛8逢嬰c ch丑p"n "mj„c"p院w"p„"n "o瓜t c映m t瑛 mj„c"dcp"8亥u x e„"o嘘i quan h羽 vj¤p"vjk院t v噂i
eƒe"e映m t瑛mj„c"dcp"8亥u mjƒe0
N院u s穎 d映pi"vk‒w"8隠8吋 t¿v"eƒe"e映m t瑛 mj„c"dcp"8亥w."x·"u嘘n逢嬰ng l医{"8逢嬰e"n " v mj»pi" 8栄 ph栄 qua t壱r" eƒe" e映m t瑛 mj„c" ucw" épi0" P‒p 荏 8¤{." 8隠 v k" 8隠 xu医t hai
rj逢挨pi"rjƒr"mjƒe"8吋 t¿v"vt ej"eƒe"e映m t瑛 mj„c"dcp"8亥u thay th院 cho vi羽c s穎 d映ng
vk‒w"8隠<"rj逢挨pi"rjƒr"c映m t瑛 tr丑pi"v¤ox "rj逢挨pi"rjƒr"u穎 d映pi"8員e"8k吋o"vj»pi"vkp"
c栄a c映m t瑛 mj„c0"Ejk"vk院v"8逢嬰e"vt·pj"d {"vtqpi"hai m映c ti院p theo sau, M映c 4.4"x "