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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:6 W  J4 M; D( ^
to do-business
5 p. ]$ D: V! o/ J rt random 3601 n; D" ^  Y. f; ~# B  Y
fd 1
5 d# Z* X2 q- p ifelse(other turtles-here != nobody)[5 n: ]9 N# O; a% P5 l! X
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.! A) l: J7 E" |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 v/ o- C2 z8 T8 i6 @1 u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 D* k  |0 K/ C  Y4 |2 m# t   set [trade-record-one-len] of self length [trade-record-one] of self  a1 m6 ~, V( h& g; t
   set trade-record-current( list (timer) (random money-upper-limit))
4 P% X8 |" I9 M* `; v" ^
7 D. k( _4 ?% b. Q1 f( Z# f问题的提示如下:3 Q2 F5 H$ X3 A
& q+ Y) @# q) B: f" Q& n) Y" b
error while turtle 50 running OF in procedure DO-BUSINESS
5 x# w; [8 P/ z# ~1 i  called by procedure GO: \+ i" e+ u* D4 P$ i% A( f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; ]/ i$ y5 J: R* w
(halted running of go)$ d" K! y$ K4 T# E( t$ v! R
* X4 C# E% @3 ~* ]% N
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~4 K! u' l8 }9 X" M, t* R0 J2 Q$ q
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
8 j+ h7 m, b7 ~+ |  Y. c8 M- x1 H9 uglobals[) i# C. k. K* L. {. _8 D7 q2 h
xmax+ {9 r9 Z/ }) [
ymax
. t1 \! j% K9 Y1 R7 Dglobal-reputation-list; Q, |  Z( P! X: B0 @8 d8 w
7 V) X9 }4 l- E9 `: W% O
;;
每一个turtle的全局声誉都存在此LIST
4 H+ r8 ~6 N0 Q$ S) Y) fcredibility-list+ |  J+ f6 N+ L1 y! m
;;
每一个turtle的评价可信度+ T7 g& q! G4 {" h; D- q$ ?
honest-service* d. E3 b, E: l# u5 K/ I
unhonest-service
' B! z/ m6 i( D! c, S9 Ooscillation
' j& |* h# y# f8 c  l' `$ @rand-dynamic
- u/ C. A# g# R]
1 F. H* M  y  g+ G
& M% l& t5 W, ]1 }5 R# {turtles-own[* Y) l" U6 b/ u6 @6 }4 ^
trade-record-all
( z' s9 U# {. a: Y1 q- [0 L;;a list of lists,
trade-record-one组成
) M) E: ?' O7 C6 S$ \7 h# I" F8 wtrade-record-one% C: z& ^) [- g. u/ m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ A/ j) G7 Q  s' R$ h( C
. G, P! D" i1 |, h, I3 I* S;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]/ a& f7 m" e, E( t" \: ?0 f
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]) |3 ^* G2 X" z$ R
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
! n" h% x0 \* r) |' Hneighbor-total2 L( ~0 {; O/ T! g2 f( H
;;
记录该turtle的邻居节点的数目( E+ I# k3 T+ ?8 t
trade-time
6 w! e9 Z7 r: j;;
当前发生交易的turtle的交易时间
3 l* }' y: ^' p! l/ r2 }8 x4 Wappraise-give
* V% O& t% h4 [/ ?; M3 d+ x;;
当前发生交易时给出的评价
3 b8 C5 ?0 v1 m, P1 L. [& s9 kappraise-receive
! e! {5 \9 N, _8 [;;
当前发生交易时收到的评价
: Y7 }! n8 t& K# _( L: \appraise-time
. Q1 L3 [* ]4 t3 Z/ _6 ]) r;;
当前发生交易时的评价时间
9 |1 \) y# c2 Q9 H/ X. L) nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ ?& {; [& g. r* ]' x
trade-times-total" y3 l- h9 u% e3 u% Z# X' h
;;
与当前turtle的交易总次数
* d6 w3 t) E- \6 o/ Itrade-money-total: Q4 t, |9 \3 }# F; f0 n# q
;;
与当前turtle的交易总金额
' t7 ^; ^$ A& Z& r; E+ p$ z0 }, @local-reputation0 R& l/ N  f6 h# F
global-reputation
4 ^* D! j  K: |" {6 Ncredibility
& g2 A5 ?( d: L& H: K' [7 w9 `7 i/ \;;
评价可信度,每次交易后都需要更新  R  p6 ^: M" t
credibility-all" Q9 H* h4 ]8 I2 n, z
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
, w" x: f; J/ R5 q# z
9 o. r+ s( t& w# A) i& l3 Z;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.54 m. K$ c, y9 R* ]( v3 X! [5 I/ A
credibility-one
2 M+ Y. D6 c: v( Q2 }3 L& f% E;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
% ]# `; I( e, _* a! t* r, Wglobal-proportion2 Y8 g! S2 _; C& z& R2 L8 H
customer
4 R8 s) W1 q7 e% a. O0 R$ S0 W9 hcustomer-no8 X; B5 b3 @0 y5 |* M0 K
trust-ok  R, B3 e/ V+ z% b
trade-record-one-len;;trade-record-one的长度1 W3 g3 |- c9 v
]
" v3 {0 S+ Q1 }# S) I1 g% d/ r1 w8 q
;;setup procedure
5 R' e: K% M8 p  S
- T1 f9 @# b' k' \% Q: h& yto setup! B% U! Y) M4 i( x! A
! H6 n8 u! K; A4 p. T
ca
+ O$ a7 ]" j# A5 D' x/ }

# O3 p3 W: v. p( N7 i0 yinitialize-settings

6 q; u+ t3 Y: _" L5 A- }8 i" o$ M5 p2 E& z* D, o
crt people [setup-turtles]
4 O4 l; m/ T3 L
+ j5 ^+ b, L: q) {; v' l
reset-timer
; |' a% U( w  s- m. p, f1 W) ?; F; s

2 ~. F1 m2 L! z; o4 {! q) L' `poll-class
8 o3 h9 A" h0 Z- T1 u9 Q
, x* c) ^3 J, s
setup-plots

9 e: f- V& [. K8 L6 _: f5 V/ o' R* k( c% v) v& u% |0 I
do-plots
1 W& H# l. q9 l
end
& c1 R4 C4 u% @; p4 c. y3 I) @1 y5 [# t$ E1 G. W
to initialize-settings
  m2 }0 F) q* N4 Z! a
& Q2 e) m( J1 F$ @4 cset global-reputation-list []

; [. @$ f; g0 m# P5 g5 C1 g- i0 t4 |* A% v
set credibility-list n-values people [0.5]
; ^% Q6 S7 A8 q! F, i2 t

0 L' T$ k: Q/ K% u" [set honest-service 0

. s% t1 n; p5 B" Y' S0 _9 T5 A/ E9 n/ `! w5 }! R/ s* j9 H
set unhonest-service 0
/ z6 D* A- R* A0 O7 w1 f2 y* X
& ?. W) {$ m! f8 C7 T" K
set oscillation 0
% s/ w/ b* X! i  d: R1 d
* J4 i. T9 ~! M5 O* A
set rand-dynamic 0

+ j" s1 s: I/ h  {6 ~end9 ^# h2 e6 `( `% F3 K, C) C/ z
7 A) v0 [9 k! {6 [4 q- R5 p/ _
to setup-turtles 2 \: Q" I; d# r' b# r) ^4 Z: @  l% N  Q4 N
set shape "person"+ }2 m8 s) _4 ?; J7 S& g
setxy random-xcor random-ycor, J# x- s6 L9 r$ z
set trade-record-one []7 ^8 @+ W; J* b  z
5 Z2 n5 a: D! J& E/ f5 a0 Q* B. k
set trade-record-all n-values people [(list (? + 1) 0 0)] ) J' V, ~8 L/ v/ y# U, p" y8 d4 W
0 R- M, X% m3 u7 g
set trade-record-current []0 X& j% F5 |2 @% f0 w) [
set credibility-receive []
9 ~. o! O  {/ }set local-reputation 0.5
. m8 _0 R% b. Y+ `) |& K# k3 r: }set neighbor-total 08 \& C+ ^. y8 W4 O
set trade-times-total 0
5 g0 `0 Q) Y! jset trade-money-total 0' U" _! i2 G% h
set customer nobody4 @. z" D2 Q; n( U
set credibility-all n-values people [creat-credibility]
( P, g( d( Q1 L) E# V9 pset credibility n-values people [-1]
. P8 ?$ @4 T% ^% Qget-color. x  \4 K. O& A+ v. ?3 a

+ z* g% Q) I, `end
) X4 o! _' ]5 |1 _4 z- W5 K7 b. J: A
to-report creat-credibility! I  A0 [/ l$ a. a
report n-values people [0.5]& t/ |  F8 f0 x+ E; g
end8 E! I& w# q; A* I$ `/ U

- q; j  c& L& oto setup-plots! Q3 M+ p' b, I7 r3 f

1 P5 ?# }7 L+ L3 x" Uset xmax 30

9 x) s9 `$ \5 o3 p$ X7 h! ]* E8 |  z4 C; O8 [) e2 r+ U
set ymax 1.0

  Y0 e0 G4 _, ^8 D# E
1 M/ R/ ~( r& q+ T/ bclear-all-plots

. T' y$ K6 \! E8 w* N% @2 `
, t; q9 h/ u, j0 _+ g: `setup-plot1
. Y9 C5 H6 j% K- J1 J

+ Y# ^* Q; l( N# `- B' ]5 psetup-plot2

+ v) B6 ]8 p5 I0 e9 ~2 \& c
: u* _/ {; T7 D: a) Asetup-plot3

3 R2 s: u$ x% Yend
5 r& g6 _9 K! c" I5 S
3 T9 Q  h$ K# H;;run time procedures( D, r* |2 \. D) m' k1 d

8 k2 |7 a! U4 Sto go
/ t' S" ~9 T$ C* m; N( D: B
8 b- y- G/ S( p7 o9 Pask turtles [do-business]

% p7 t( \$ I* p  W0 S- Yend" Y4 ^; A# e% \8 }  t0 e/ N

* B. x6 B5 N' {1 ?3 ^, Kto do-business 7 o& e8 S  @: R+ M9 t% T) b+ ^
, |: F) @) w" z
3 G7 {1 M9 T- ]+ I
rt random 360
3 ~( e3 _7 b( c# q# c# Z

# H% ?7 h, x0 ~  u$ t# j8 Xfd 1
, f9 a4 ?. {& V( L3 V

% \9 {# S1 |- p; Wifelse(other turtles-here != nobody)[
" _2 V8 A: T/ }0 X4 i! y3 }
  t( J- [2 w. m. t, _  S# C& g" ?' a+ ]& w
set customer one-of other turtles-here
. C& K1 s3 g, a# a3 O
7 m+ u! l1 ?7 C  b4 k
;; set [customer] of customer myself

; ?/ Q* |/ w) M9 O# J$ |6 O8 d
set [trade-record-one] of self item (([who] of customer) - 1)
( t. T7 X* _' K% U8 D" q[trade-record-all]of self: x7 x( K9 N0 M% O+ n# c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( F! a7 M# l/ D0 v' ^. c

6 |) v" j! [0 l5 j; t6 Uset [trade-record-one] of customer item (([who] of self) - 1)
' D0 e% r  p- ~0 \. |+ L[trade-record-all]of customer
* J4 d3 j- c6 a/ `
1 W, u' {7 D& P" @) S
set [trade-record-one-len] of self length [trade-record-one] of self
0 k) t' ]9 ^( W7 c7 J6 R# Q
2 D5 Z0 [( F. q
set trade-record-current( list (timer) (random money-upper-limit))

3 n' X& J; Q3 K& ^
, `9 o% u2 {& C1 ^ask self [do-trust]
" }8 y# s# T) k;;
先求ij的信任度' d/ M# b, }* S% w$ ^1 _, N
/ C/ t* f- Y% [6 C# ^8 x: n& m9 u
if ([trust-ok] of self)
/ o1 Z# [5 X' }4 b;;
根据ij的信任度来决定是否与j进行交易[
7 @* L* z% ?( }+ X, eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, V* p# C3 ]2 V! U
/ j7 u) _3 \1 @- A9 T, Z* D' x
[
/ `: h: Q# n- |+ p

) K- J8 ^, s% ~3 Tdo-trade

, u9 p9 P" n" n8 v# H7 a. x# @: C1 k) s
update-credibility-ijl

+ t2 H: }' Y* l& t( I" p  e/ ?, t: y- K- I4 t
update-credibility-list
9 ]5 E1 z0 X* x

) V; s) _9 P' U: n# G, d
4 R- U+ I8 f3 U# `3 vupdate-global-reputation-list
" d9 H4 C* z) v
) [' [7 _) F2 g
poll-class

* [3 K  Z) M  _9 `7 U9 G# [- L/ t9 T* E& G) X* ?0 y
get-color

- Z0 p+ r; I* y8 \: X, j) `. q( E8 y2 A& [
]]
* u0 n! w- }9 h) N% n, O" K( L2 p6 v: b4 t
;;
如果所得的信任度满足条件,则进行交易
, b( D/ Z& A) S  I! H) d  `6 X, K, U3 R7 |' }. t" R; U) r
[
! S( x5 @9 E8 `, V
! X$ D# s. J" V5 W4 \. B
rt random 360

$ J3 X, O( w0 z, I. w6 U: J; d. Z- ?4 s) t9 i/ H; ~! x& q; R
fd 1
3 h! }; Q, n2 s0 k- [# I
& d) ]" K  g" o) i' \5 B- Y8 y- q
]
7 j0 k' s% o2 P/ d  O# h2 e) P3 F
) v4 ]/ M% F/ i" y6 K9 f3 C: g0 v
end

  {  C# S* u9 M) R% l$ d% Y9 Z
  K' {* U3 t: L1 s+ `# y& b+ dto do-trust 2 E9 I4 t8 F8 F1 M& U
set trust-ok False$ C) b6 f* x! y, \5 _, ~8 l

+ c0 Z6 `7 F9 M5 j8 P" O

: I) D+ Q! h& o5 \2 d6 D. {3 wlet max-trade-times 0
- C# j0 K2 r* Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 \# M2 n9 l1 W( _% ^9 I6 Qlet max-trade-money 0- o% L  _) H+ x  s( E  V9 X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! P8 I& f% E( W. X) z) U3 ?* _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 b( W4 S; \  N, M

$ M* i9 o% C* o6 ^' Z; W
1 n' s5 n7 C2 ], Y; Y" g( @9 e
get-global-proportion
* K/ K& y' B7 U" H4 Nlet trust-value9 p& b7 l2 f9 A1 A/ y
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  A2 |! o( h0 f- a4 B2 B3 Xif(trust-value > trade-trust-value)
5 u4 R+ y) u( p- }! Z[set trust-ok true]- g$ \+ n' w& U$ S
end
* c# ~, s8 p1 ^$ R8 ?; S& F; Z
+ O" u# a/ [/ d2 {7 u( sto get-global-proportion% h" Y  i& _1 G5 S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 ]2 |# O! u; b8 V, H+ r[set global-proportion 0]8 I$ N" ]+ c/ X0 E% D$ Y
[let i 0
0 q5 G! r$ w# ^; klet sum-money 08 _2 j! t1 j1 L9 ?' ]1 t5 ]/ }) s
while[ i < people]
# b6 h2 U: F* D' v7 H) q[% C& H) W6 s0 j/ x7 A
if( length (item i2 F$ e3 f( D) G9 x8 r
[trade-record-all] of customer) > 3 )
1 e" b1 q8 B7 \, i
[
0 ^% P/ k; ^- c1 Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* P6 l! w! W0 j# [. U]2 U! C& l% h- x. ?! H+ Z. O
]
& @0 p! Q, t9 ?$ W3 jlet j 0
% B. r8 F' h5 Q6 R' D: G# A$ Glet note 0
2 q. W2 X  u4 ^- t; Ywhile[ j < people]0 {3 c8 x9 ?( R
[
! z4 c; ?% y( _4 iif( length (item i
' h1 z6 D1 r8 I: s[trade-record-all] of customer) > 3 )

& K( l5 o- }$ J# S, s# e6 p[5 |& m6 F1 q( B" X3 r8 c6 }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) K9 p5 ~$ Q" f: Z. G% Z/ I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 n: Y  b! c, a) w& Z2 a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  c; X. K+ ?/ q4 r, W. P- x8 W
]
% ^6 E  Y5 s1 M5 ?7 e* u1 l]2 ~, `( Q# |8 R; A4 }
set global-proportion note
, {( l" x2 V$ ^* w]2 _9 }8 \# X$ X" ]$ M/ o
end3 K6 c- B2 i( ?# F# o

. {- P. f: k. y1 v! Cto do-trade
' P2 {$ W) F6 x' `;;
这个过程实际上是给双方作出评价的过程0 O  s& Z! o) V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 G1 p$ `: C0 a& L! K5 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; p  e  k1 |$ Mset trade-record-current lput(timer) trade-record-current
7 u( W" a3 O9 m" e# {- r;;
评价时间+ M0 E; b( i, c2 T2 N  j- Z
ask myself [
1 h; L; L2 F8 ~7 o' P0 z/ e; T& |9 p: gupdate-local-reputation' Z% `) \6 i3 e4 }8 I1 ?  c& \2 v
set trade-record-current lput([local-reputation] of myself) trade-record-current
# b+ r4 r+ Z2 D4 l; a: g]- r1 `# ]; r& X' W! l2 T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 o" A8 s, F. o( Q
;;
将此次交易的记录加入到trade-record-one/ x6 L, ?4 s( S  Y& q7 }! p6 n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 o0 d% L3 b& Z" h% ~let note (item 2 trade-record-current ): B1 F" t9 ?8 q5 ^1 ?5 e
set trade-record-current; u; E! Y% o& k& |
(replace-item 2 trade-record-current (item 3 trade-record-current))

! Z+ ^& V6 c7 ~set trade-record-current; i8 o7 G1 A8 o% |
(replace-item 3 trade-record-current note)
' d# i9 l% ?, L7 a9 H. b# }# a8 a. T  O. x2 ?
+ R& x6 q4 w- j( ?' `$ {/ C
ask customer [
% l+ e  {( e" n2 n2 ~" f( ]7 Wupdate-local-reputation
9 C. q5 g% v+ J( rset trade-record-current4 L3 g3 M5 F2 L( O" M" G* p/ ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. m$ T7 @# Y7 b# D
]6 s- D6 B+ p; A; s4 F" S8 j9 S# V

9 B( Q* K8 G. u

- t4 [$ f  g0 n" K6 A( I9 fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 v: @2 e5 z+ t$ h  _' Y7 [, r* D
/ e1 k3 h# T2 G& f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' ]) v9 w8 E4 I( n+ o;;
将此次交易的记录加入到customertrade-record-all: H+ m; G9 }& \0 _
end
; `# [3 c3 [$ v6 o
+ A5 P1 s& q- l+ a+ Dto update-local-reputation
* x( H. F, c' ?% K1 P7 O0 f5 Gset [trade-record-one-len] of myself length [trade-record-one] of myself
8 f4 E5 H" n! ~& |/ }' q' t
1 T  ^2 X& W2 |
! S* G9 @% u) B3 I. F- H& s# E;;if [trade-record-one-len] of myself > 3
% G9 v0 H& l/ a7 Y. g  ^& z/ d
update-neighbor-total
# D) Q; R3 z  T( H;;
更新邻居节点的数目,在此进行5 V8 |( q& _" ?4 q
let i 3
% p& F( U8 Q7 m, A1 G0 Zlet sum-time 0
# I0 w; E/ S8 l6 i+ ~4 Ywhile[i < [trade-record-one-len] of myself]  E# |! F- u  _7 R' ?0 Z+ C
[
* t% h- E1 @* Q( B+ x6 sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% u+ g1 n3 q9 @& Jset i3 \3 {' D) u  C" D4 S
( i + 1)

( N5 p8 ]+ L/ K) \  z]- Q1 s' _8 W0 O  a5 O" a/ e
let j 3
' M% K' Q. k  m) M7 f4 ^3 j3 mlet sum-money 0
. d6 b% x# Z4 v9 M+ M! H' swhile[j < [trade-record-one-len] of myself]! W3 R2 F, r' C
[
' w6 l' E- |4 i9 b- L$ T" Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 Z" n- E9 h$ R1 s7 sset j$ s% L6 j4 ]5 H4 E
( j + 1)
$ {1 I/ k0 [3 ?) ?, N
]
, H3 U; Z; Z& G/ P& _6 `5 L3 x4 Elet k 37 ^# b: g0 Z( \- p* s6 `6 g
let power 0
. A2 V* ~5 I0 c+ f* Plet local 0
8 B9 p3 c3 V) x8 I. Nwhile [k <[trade-record-one-len] of myself]1 h. L- [$ B' P9 V: N
[
$ G& o! O% Q( Uset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
$ D, l: k  n+ k, _* xset k (k + 1)
, |% ?! ~* }! S- g8 {]0 z) |" \- R) H& X
set [local-reputation] of myself (local)
4 C5 B  I; [: I% N6 Cend* |# i3 n! |8 O
3 O8 h2 S; |5 g7 x6 J1 F
to update-neighbor-total
( m5 [* k3 @# w4 a8 p, ~, ?9 V" L$ ?. ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 D+ l8 {) S/ ?" ]! P% J
/ E6 e9 E% q) ?, `% e8 e

- n* P6 k' `# @9 G8 a; dend
; A/ J+ g7 s' w/ T* g
2 t8 L' t; o) @to update-credibility-ijl
4 |" U+ v' H# @+ X$ Y
6 ]+ F. _' e# i;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
8 N% i2 m5 E2 K! F5 T6 Ilet l 0
* L2 K! X7 ?' h) J7 Nwhile[ l < people ]
3 C6 U8 o, d! Q( l' @;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价3 `3 f# w1 j# ~4 N- s
[5 ]- v# X3 s& K% t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ u0 k. x9 e( v: M8 M
if (trade-record-one-j-l-len > 3)
& g: k4 I0 d# e0 {7 z[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one& W; [2 s- A4 ~* B5 s# H- T* l
let i 3$ K& e- h. C# g: j0 h
let sum-time 00 u( c) `2 Y1 o
while[i < trade-record-one-len]/ O( L/ O4 i2 i$ k
[: G$ J& E3 c3 x7 Y% w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# `6 Y. U* b  g! P7 [* U+ uset i
) \  ]. l' ^* S$ ?! c- ^' y( i + 1)

4 |6 h+ {1 f3 b1 q7 p* ^]2 G0 B- g7 w( l/ i* I. K5 p
let credibility-i-j-l 0
4 \. u# h; {8 H2 I3 v9 a;;i
评价(jjl的评价)
3 H& |# C' z& J' j% F# blet j 3; ~- c$ ?1 _( \
let k 4
( i" z% k2 M/ B0 f2 Pwhile[j < trade-record-one-len]% Q3 O; U, b/ n  `, E
[1 X% t: r6 T% I6 ~) L
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
; H; g4 S. j7 x8 L3 N' X  b" I0 sset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time), ~5 N+ y& Y) h8 ~! d9 j
set j
9 X) ~' J  }3 u# ?- a5 p+ L( j + 1)

0 S& z1 N$ @/ x- @' r8 J" b0 }]" E2 s; }  C' ~$ J; N8 g
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))1 `; r5 Y/ Z% e' n+ k7 u3 r
! r; V6 I1 G& O# K7 l

, j( k4 J. h* h( @7 Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* u7 d5 j5 ?, {. L2 w2 d! h& T
;;
及时更新il的评价质量的评价" i6 b& ^+ A" E' T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. u! ], h; C* [8 nset l (l + 1)( B7 c. S. z4 h* p8 h$ |/ P
]
+ T+ Q4 e5 u) i2 x+ i6 p/ o# bend
2 m2 H- ^, H' ]) n3 l/ R) I% J0 b( E: v$ @  S; o# i0 ^2 x. V" z
to update-credibility-list5 w4 X! j8 }- s0 A
let i 0
. q  k" r0 T5 L! e3 B- bwhile[i < people]
9 L" T# r4 M" g; a[+ ]! l- |0 X; r+ |" ]1 q+ w
let j 0! T! @. G7 I$ T2 f; [: A0 c6 h1 \
let note 0" b( d  _+ `0 |: k$ U* d
let k 0  E% t% z" Z# `0 O
;;
计作出过评价的邻居节点的数目, ]7 Q( O4 M* e+ d8 l
while[j < people]  P8 m. T! m7 p) W2 v
[# U3 t7 E! K2 G" v
if (item j( [credibility] of turtle (i + 1)) != -1)
- j  Y  _( |- t0 w8 V" i2 u. O;;
判断是否给本turtle的评价质量做出过评价的节点; B' x3 u# J* j' P2 e( a
[set note (note + item j ([credibility]of turtle (i + 1)))% i$ t1 f& P  d/ R' E! k9 D
;;*(exp (-(people - 2)))/(people - 2))]
7 O  X' p- g5 j2 \$ R) `5 T, d
set k (k + 1)
2 j( u/ s1 w4 X9 b$ H% O! u7 n7 o. B]5 L; d; {. A5 \, d6 r* j
set j (j + 1)6 @) ^) D0 P$ ~1 Y- v
]
5 X* k9 w' t8 v# X5 Zset note (note *(exp (- (1 / k)))/ k)! d) T+ C% X8 r6 f6 u0 W. |$ ~
set credibility-list (replace-item i credibility-list note)
) m  Q7 ?+ Y4 \* k% Fset i (i + 1)7 s8 U: \! C1 a
]/ ]) c& ]  R( q9 ~! y6 a
end4 `$ k7 r. E. i  I' X. S* B

$ j% W, H) C% k7 e( h( @4 {1 W' Z) Mto update-global-reputation-list
% h% ^9 s8 I0 X2 Z; }  slet j 07 l% g* u$ I2 J3 ?  ]& k# U
while[j < people]! z, U- f& P9 n# l6 M0 D% h
[$ h4 `  F9 c- J" Q! A& w
let new 0
2 B9 p. t0 P0 h1 m;;
暂存新的一个全局声誉
+ L! m2 F" b+ {6 O# n+ }9 ^7 Llet i 0' U( s8 ]: F/ P2 ?3 M
let sum-money 0
6 n6 K8 c7 c& l; i" alet credibility-money 04 A, z% I3 P: V* M. T0 {
while [i < people]% x1 c4 I& B  W# w
[  y! i: W( [+ O8 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& @1 u6 r0 `  Z9 z) d% k: n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 c+ N* j0 `6 P7 M+ D& Z7 [
set i (i + 1)
4 j/ F: d( T6 C& [+ {2 d" l]
5 @  F7 \  D+ c8 Clet k 0
+ C  K  J& l- I3 F& s) flet new1 0
6 |2 a7 m" J( r) E: |; m4 F, A- zwhile [k < people]$ }0 v& A3 ^$ H! a; [* O0 p. h
[+ m  s0 U! F' I
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)0 u% q' `( l; D1 b: O( ^  L! v
set k (k + 1)
  y7 S1 W+ ?+ p* k2 D) f4 L]8 q3 \& v& M7 i; [2 n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , M! q2 Z% X/ G9 s. ?$ M5 @: z# ?0 Q
set global-reputation-list (replace-item j global-reputation-list new)1 C9 W' ?. H5 f# D: Z  V
set j (j + 1)+ M2 s) y% ?8 t. p% |
]  ]' \3 q0 v$ y" V8 ^
end7 E$ e0 H  g9 V  W' l: e

; h4 S0 m' O1 ?1 W2 E: `1 B4 w5 ~! O6 p! Y
2 a3 ^6 n/ p6 o/ x
to get-color
8 [! e' m: W$ }8 V! a! O# j2 U7 e; y2 m! e1 q+ a* K) O
set color blue

* I$ _/ C' _6 q5 v, qend
% D, W- Q3 |. s% m- S+ _6 e
; n- ~1 @" F  c) r7 mto poll-class
& W, O9 Z7 w. ?+ a: Bend
8 |$ ^- F3 }8 g4 f" \" F. l5 S
4 q& Y. {/ {  ]8 u  W5 f( G( @to setup-plot1
! U/ A( o/ D- }$ c
( ^+ L0 o2 p9 ]; y& |set-current-plot "Trends-of-Local-reputation"
5 H: R/ g- u  f! G( W7 y+ V

; W( N! u. @, n: |. kset-plot-x-range 0 xmax

. P( @! b9 {- [8 z' }
* w: [/ P4 C. I; K5 ]set-plot-y-range 0.0 ymax

; o4 Z; S0 c* `8 H# s2 ?! @& e2 J1 cend! ^# w& i$ W* C" t! p

' r* ?  k' n* Mto setup-plot2: p, j" m: D( U) F! ^
2 R/ O; `5 o. s
set-current-plot "Trends-of-global-reputation"
  d: L6 U  W7 D/ m0 }

7 ~2 O- D2 ~, L& C1 Qset-plot-x-range 0 xmax

; d- p" c: R9 ~% K
; y4 O) i( r+ v3 Y# w! @: nset-plot-y-range 0.0 ymax

3 M% x8 u; ~! v% W! m1 c2 B1 Fend
! E) D" [! c% M, l. e; k  s- a+ [4 E& F  G0 U
to setup-plot3
7 Y& b- \9 K' c' g; ^: {$ {0 J
5 P  B' t  I& m5 x; y$ }& f4 oset-current-plot "Trends-of-credibility"

( u; l& k, S  n# z: m' H5 |5 P; z5 Q& {
set-plot-x-range 0 xmax

' f9 L* G: k6 e# k- Q$ B( w# d* z5 g$ {
set-plot-y-range 0.0 ymax

! m0 ^4 Z  v* S7 `+ \( U' }& Send/ q/ o  i5 f$ h' `# ^% L7 J3 {$ M
1 ^4 T5 k( Q/ Y2 r
to do-plots% O  E+ E+ _" l7 y2 e
set-current-plot "Trends-of-Local-reputation"
* Y7 s/ D4 G! B1 S* ~set-current-plot-pen "Honest service"; w% l  w! M+ n, l8 c6 |" I
end
- _/ P$ x. {; J" W" R
( F! u* j2 M. O/ |/ x9 G" B[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
/ D' W: I1 n1 I- p" G3 X; h7 \. G1 n$ A! g& Z2 y5 [3 H4 I9 i. r0 P, ]
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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