九州大学学術情報リポジトリ Kyushu University Institutional Repository 社会ネットワーク分析の手法を応用して知的財産法の役割を評価する試み 寺本, 振透九州大学大学院法学研究院 : 教授 Teramoto, Shinto http://hdl.handle.net/2324/27455 出版情報 :2013-10-07. 知財学会分科会バージョン :accepted 権利関係 : ビジネスと知的資産 知財法研究分科会
- - 2013 10 7 Assessing the Role of Intellectual Property Laws from a Social Network Perspective by Shinto Teramoto at ARS 13 workshop, 20-22 June 2013, Rome Teramoto, Shinto e-mail: jshin768@gmail.com 1 2 3 4
; ; ; 5 6 7 (Landes & Posner (1989)). 8
1) 2) 9 10 Origin 16 4 64 4 ; 64 4 ; ( Origin ) 11 12
t: Origin the degree of separation P: Consumera Consumerb Consumerc 1 t P τ P = exp (- t / τ) exp exponential function 13 14 τ τ τ Origin ( Sf ) Sf fτ Sf Origin ( Ss ) Ss sτ Sf Ss Sf ( Ss) Sf ( Ss) 15 16
Sf / Ss Origin Sf Ss Sf (or, Ss) Ss (or, Sf) 0 1 0 17 18 0 Sf Ss 19 20
Sf Ss Origin closeness centrality R8 2009 pp. 41-46 21 size: the number of vertices in the market. vregular: 1/2 of the degree of the regular graph representing the default conditions of the market. ccapa: the maximum possible number of Products purchased by one consumer. fdegree: the degree from the Origin, from which scope Sf comes. sdegree: the degree from the Origin, from which scope Ss comes. fτ: the degree of strength of sales capability of Sf. sτ: the degree of strength of sales capability of Ss. fforce: the degree of strength of IP rights of Sf. sforce: the degree of strength of IP rights of Ss. fminc and fmaxtrial: Sf does not enter the market unless it attains the minimum sales performance (fminc, represented by the percentage against the possible maximum number of edges sent by Sf) within a prefixed number of trials (fmaxtrial) sminc and smaxtrial: Ss does not enter the market unless it attains the minimum sales performance (sminc, represented by the possible maximum number of edges sent by Ss) within a prefixed number of trials (smaxtrial) 22 Simulation - Sf Ss Sf Ss ccapa fτ sτ fminc sminc fforce sforce 4 1 0.001 0 0 0 0 4 1 1 0 0 0 0 Sf 4 1 1 0 0 0.5 0 Sf 4 1 1 0 0 0.8 0 23 24
Simulation - Sf Ss Sf Ss 0.6" 0.5" 0.4" 0.3" 0.2" 0.1" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 25 26 15 50 Sf Ss Sf Ss 27 28
100 Simulation - Sf Ss Sf Ss Sf Ss 29 30 Simulation - Sf Ss Sf Ss 180" Sf Simulation - Sf Ss Sf Ss 160" 140" 120" 100" 80" 60" 40" 20" Sf 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 31 32
Simulation - Sf Ss Sf Ss ccapa fτ sτ fminc sminc fforce sforce Sf 4 2 0.001 0 0 0 0 4 2 1 0 0 0 0 Sf 4 2 1 0 0 0.5 0 Sf 4 2 1 0 0 0.8 0 33 34 Simulation - Sf Ss Sf ccapa fτ sτ fminc sminc fforce sforce Sf 4 2 0.001 40 55 0 0 4 2 1 40 55 0 0 Sf 4 2 1 40 55 0.5 0 Sf 4 2 1 40 55 0.8 0 35 36
Simulation - Sf Ss Sf 0.6" 0.5" 0.4" 0.3" 0.2" 0.1" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 37 38 15 50 Sf Ss Sf Ss 39 40
100 Simulation - Sf Ss Sf Sf Ss 41 42 Simulation - Sf Ss Sf Simulation - Sf Ss Sf 180" Sf 160" 140" 120" 100" 80" 60" 40" 20" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 43 44
Simulation - Sf Ss Sf ccapa fτ sτ fminc sminc fforce sforce Sf 4 1 0.001 40 55 0 0 4 1 1 40 55 0 0 Sf 4 1 1 40 55 0.5 0 Sf 4 1 1 40 55 0.8 0 45 46 Simulation - Sf Ss Sf 0.6" 0.5" 0.4" 0.3" 0.2" 0.1" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 47 48
15 50 Sf Ss Sf Ss 49 50 100 Simulation - Sf Ss Sf Sf Ss 51 52
Simulation - Sf Ss Sf Simulation - Sf Ss Sf 70" Sf 60" 50" 40" 30" 20" 10" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 53 54 Simulation - Sf Ss Sf ccapa fτ sτ fminc sminc fforce sforce Sf 4 2 0.001 40 55 0 0 4 2 2 40 55 0 0 Sf 4 2 2 40 55 0.5 0 Sf 4 2 2 40 55 0.8 0 55 56
Simulation - Sf Ss Sf 0.6" 0.5" 0.4" 0.3" 0.2" 0.1" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 57 58 15 50 Sf Ss Sf Ss 59 60
100 Sf Ss Simulation - Sf Ss Sf 61 62 Simulation - Sf Ss Sf Simulation - Sf Ss Sf 70" Sf 60" 50" 40" 30" 20" 10" 0" 1" 3" 5" 7" 9" 11"13"15"17"19"21"23"25"27"29"31"33"35"37"39"41"43"45"47"49"51"53"55"57"59" 63 64
Simulation - Sf Ss Sf ccapa fτ sτ fminc sminc fforce sforce Sf 4 2 0.001 40 55 0 0 SfSs 4 2 1 40 55 0 0 Sf 4 2 1 40 55 0.5 0 Sf 4 2 1 40 55 0.8 0 65 66 Simulation - Sf Ss Sf 0.6" 0.5" 0.4" 0.3" 0.2" 0.1" 0" 1" 8" 15" 22" 29" 36" 43" 50" 57" 64" 71" 78" 85" 92" 99" 106" 113" 120" 127" 134" 141" 148" 155" 162" 169" 176" 183" 190" 197" 67 68
15 50 Sf Ss Sf Ss 69 70 100 Simulation - Sf Ss Sf Sf Ss 71 72
Simulation - Sf Ss Sf Simulation - Sf Ss Sf 70" Sf 60" 50" 40" 30" 20" 10" 0" 1" 3" 5" 7" 9" 11"13"15"17"19"21"23"25"27"29"31"33"35"37"39"41"43"45"47"49"51"53"55"57"59" 73 74 76
77 78 References William M. Landes & Richard A. Posner, An Economic Analysis of Copyright Law, 18 The Journal of Legal Studies 325 (1989). William W. Fisher III, Theories of Intellectual Property in Stephen Munzer (ed), New Essays in the Legal and Political Theory of Property (2001) 168, 1 (referred page number based on the available online version) <http:// cyber.law.harvard.edu/people/tfisher/iptheory.pdf>. Suzanne Scotchmer, Innovation and Incentives (2004). James Bessen & Michael J. Meurer, Patent Failure - How Judges, Bureaucrats, and Lawyers Put Innovators at Risk (2008). 79 80
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