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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:9 A$ @# W' B5 ?1 G  _# c
to do-business
1 J& G; ?  g: L9 r* r8 { rt random 360. L3 _1 g/ W7 L; l/ V* J  p
fd 1* m* j4 f2 ~3 j4 X& l' u4 f! Q
ifelse(other turtles-here != nobody)[( i- s' n, a# B* V4 t$ o
   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.; `, z1 r1 c# J7 L' [( k( |% a" G$ ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 t# K8 Q; O& M) E; h/ e7 r. _1 P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ _; x$ l) f! q- @' @2 ?   set [trade-record-one-len] of self length [trade-record-one] of self
8 C  J7 ]( L& ]. B; p   set trade-record-current( list (timer) (random money-upper-limit))$ A4 l6 Z, V* _0 R& `

% l" C  g& |8 q' D. ]) `% V8 @8 [问题的提示如下:
+ _! `1 t2 N) D7 }; t6 b" U; A1 \2 S
error while turtle 50 running OF in procedure DO-BUSINESS
9 [* W5 B, L' ^. i: G& t" h  called by procedure GO
4 b# a3 E3 n( x, C4 W5 t9 X2 A1 D$ OOF expected input to be a turtle agentset or turtle but got NOBODY instead.- w- I; }: o3 p, |" U1 j
(halted running of go)
1 Y& j0 L1 M" `, N4 n4 f6 n% q7 J
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~~) ?8 U/ R0 w: Y( \5 n+ A
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
7 P+ u2 a& u0 n6 O8 r/ B# ]0 q# vglobals[1 W' Q+ U8 ]3 n; x; D, E3 z4 z) D
xmax# E( V' q/ O6 k) |6 p
ymax8 ]0 g1 A6 @0 c& e' I
global-reputation-list
/ B2 T$ [. O0 x: b) ^6 o* q0 J: M) b1 }4 j
;;
每一个turtle的全局声誉都存在此LIST+ @+ O0 J7 u0 o) B1 O0 b3 ]
credibility-list
7 [7 L6 P" h) e$ R+ F* n;;
每一个turtle的评价可信度4 N% `1 y$ Q, Y
honest-service
6 S# Y6 T& J" i/ ]unhonest-service  u9 j$ W* W7 ^! d& _7 G* h
oscillation: L  S! ~7 N: N3 ^1 \& P' k
rand-dynamic9 L* k/ ?, b) |; e
]7 `4 [7 P; |9 ^$ K$ R1 I, g( k
! _% H' h' T: b6 r+ }
turtles-own[" _1 |9 X, M, ~4 A
trade-record-all0 `) a8 N, _& y( i3 p* U
;;a list of lists,
trade-record-one组成: j6 u! T" d0 u$ p
trade-record-one
( v% Z* `$ B) w6 L6 J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" z& z( Q% H% Z) o
/ x5 f7 u/ G* u- J;;[
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]]( m. F: S/ F' v7 O
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]+ r) G# ^& J: h7 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& i9 \/ Q$ I$ o- ^, F0 Q6 q% f( l
neighbor-total; ^" Q1 _* Q* A4 r) E2 G2 `
;;
记录该turtle的邻居节点的数目! x9 r5 r, O# Z6 l2 r  X
trade-time0 G! w' e- v3 w
;;
当前发生交易的turtle的交易时间" Y+ E" t" S  N+ U* T5 H: x5 n
appraise-give
4 i5 b# D& e" v. J! z;;
当前发生交易时给出的评价5 Y( S3 I1 T) K1 o9 C. K% r
appraise-receive+ M- m, _- B1 S; @6 Z+ [
;;
当前发生交易时收到的评价
3 n6 [7 l) M$ [' {6 X$ eappraise-time: X. L1 D* ~! S- K+ l3 ~3 W$ h
;;
当前发生交易时的评价时间
3 d, ?6 p$ J0 D( R) Y, b2 L/ n# Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 D1 {; L6 @8 |0 S* @4 w3 ztrade-times-total- ~: C5 A% B# h! z
;;
与当前turtle的交易总次数& g- `9 ?3 M- l' _
trade-money-total
7 V, Q& s( ?& d9 ]" C  Z7 y" `;;
与当前turtle的交易总金额/ X- |" i5 }: B& b" ?" y& \4 a& S
local-reputation
, A" d7 X0 T* T. ~, C5 Xglobal-reputation2 y, [. a2 u/ R5 x
credibility
) T' \+ n3 k1 _" {+ K- ~) k9 A;;
评价可信度,每次交易后都需要更新
& O# X* t% ]4 H" \8 o( e2 ]credibility-all
+ U! B0 \+ Y+ V6 r/ H7 \% q;;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9 {$ d7 [, H$ a* {; ]: h) z: o  d

4 @: A* d+ B7 `5 ?: _! s. k;;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0.5
  y! o* [; v/ S! t, \; lcredibility-one
* l' `% W; I1 u;;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people5 N: B7 L  y/ j5 U8 x: u
global-proportion
8 c: H' J5 R! c1 p7 h! |" {customer2 T! ^$ L8 C( o9 F! Q5 F6 k
customer-no
/ y/ s' a9 G' p: C1 L! L$ Ptrust-ok
4 W) r, j! R$ C0 `" J4 Ytrade-record-one-len;;trade-record-one的长度* [# E% {7 ^! h) b& l) C3 D  h
], Y6 ^1 o1 k* n3 j7 Q
$ s% {. ~2 Y* j1 _, `  T( Q3 W1 u
;;setup procedure
2 `4 x4 a/ C1 l) z" g( R1 R. c# g
to setup
1 D9 D: g' x3 c+ A) G7 w2 K3 n6 Q0 \+ Z# _8 R/ _' q
ca

- w' s0 a* l/ y" y( D- [" u
0 m  m$ W6 h: z5 a6 linitialize-settings

6 a* E5 |' `7 ?# S  j& }0 S! U# ]3 v& N; ]
crt people [setup-turtles]
. o# }4 c3 Y( F% d

- K1 a# H! W( f' P, Dreset-timer
- a1 ?( z* `& b8 f" |- @( q" i0 x  e
* J! z- a. C0 C/ r% P
poll-class

/ ^3 v; ]  W2 Q$ Q0 _8 Z* C. T( z, v7 Z8 ?" l
setup-plots

# g% u5 [/ R6 p5 Q1 `# l
) a% c; k, W" A7 _1 S2 [5 S3 F2 M: rdo-plots
* I5 a8 z* ^; T4 K
end" O- }% C. a0 S
1 w- F/ H' M8 Q  m
to initialize-settings
3 x+ M+ {& R# u- R8 y
( [$ _) G/ c9 p/ Fset global-reputation-list []
/ X! N1 O# V, g6 [6 E$ R  H$ _5 J" I

6 ~  H4 f$ [2 t4 e1 kset credibility-list n-values people [0.5]

0 ^& \6 ?& Q3 g& L! V. l, i* K; I* `$ o3 X* F! A
set honest-service 0
# A9 ^* O" n2 {+ u1 M, r  `; Y( p; L
4 g& O/ n. K7 X4 z0 J2 r5 ~
set unhonest-service 0
/ o! `+ ~; U% m' k/ R
: i5 u; N; _' ?' m, ^5 z
set oscillation 0
9 H) V2 \2 I4 n) @* D3 H
# S! I/ p, f* W: g2 j( n1 ]
set rand-dynamic 0

  v' {% H% {: d  ?end$ K& L' o3 R% |* D

( T! q( P1 m* a% p! _/ gto setup-turtles - \$ f, O+ p: K8 F( j  j
set shape "person"2 Z; n; C& W# Q: K
setxy random-xcor random-ycor2 L0 Q5 ?% `1 g
set trade-record-one []
* t$ j1 J! _/ e7 N7 g

' L- R8 C' [9 s/ rset trade-record-all n-values people [(list (? + 1) 0 0)] 1 T% h5 x" u! D* e2 @. f. ~
% S( [: M" N1 Y4 ~; t
set trade-record-current []
; w6 V' ~) T* S. |' A. G6 w! Tset credibility-receive []4 h. ~* U5 e$ a* H
set local-reputation 0.5
6 y% P; D- r) n) b( Hset neighbor-total 06 s; L* L1 i0 m7 K. ]0 y0 i
set trade-times-total 0! _, ?% Z7 Z4 X* a. L) X; V- T
set trade-money-total 0
3 [& F/ {  A1 v8 C* ~. @2 J( T, zset customer nobody* }3 `$ \& p' g
set credibility-all n-values people [creat-credibility]" n- w" R; k, C% M
set credibility n-values people [-1]
0 X& \( G9 T" b( k$ `* Sget-color1 Q5 {6 S& I# y2 j1 N1 @4 g  I: n

, l# O" b& O& t# Pend
$ N4 m3 K  n  R* ]6 N% w( Z7 {6 ~  U" n' v
to-report creat-credibility' A* Q0 y7 d+ ~' @
report n-values people [0.5]. T# m& W9 @& s/ {
end; t; R8 K$ s) {/ S- I3 h
6 c3 M0 q3 I9 M- [
to setup-plots3 Z3 g+ d5 F" G  `4 |
3 g1 u3 x: h+ c3 n' `
set xmax 30

) `3 O# A! c/ O) Z) f8 i
/ C, f. e; O9 e, W  j* hset ymax 1.0
0 @, {' D4 l; H6 A

7 ^5 ^  r4 x- l# tclear-all-plots

9 _# @6 e3 H7 ^3 U$ U( ^
; n3 h0 j4 O/ }( A" {setup-plot1

8 a% C' P3 G. H; |9 v+ ~) X
5 @' B4 i1 u; d; B# ]setup-plot2
5 J; k8 p" P- ^6 y& X" d& Z

  B$ [7 \8 y9 F) l6 Vsetup-plot3

6 K9 E5 I6 s2 G& E8 P& O. Lend2 _8 ?9 v/ B: a" g! u' p
0 r( V& U# O. `. R
;;run time procedures
1 l* ?- U# c' d5 l6 o- {! ]3 }9 _9 C5 o
to go
' t; E! m. T2 w) o. }2 n/ {/ T: q% `! @- V& O
ask turtles [do-business]
0 A2 ^- {0 f8 u
end; U" a, ~0 ^$ C  |+ m

4 d9 h0 v5 t- i  U' |. z) C0 {to do-business , e& m3 R. l6 E6 L+ c* Y

6 O# ~5 C) s2 P* V2 B/ S  _. N+ a6 s1 |; M( F( P5 Z) e+ l) E/ J
rt random 360
5 u& d' ~& b5 ]9 s9 U0 b
8 j& U+ \7 f! r" a
fd 1

  M- p8 a- j/ j" Q; \7 y6 \/ ?. `" f
0 z: w* m( {3 Fifelse(other turtles-here != nobody)[

6 h" [2 p' V+ r; P/ m/ o" R) c2 d5 e9 p! f
set customer one-of other turtles-here

( \/ W1 f- y: G* Q9 X7 l. s" P9 R( b8 h4 n6 n* B2 o+ g
;; set [customer] of customer myself

& R+ Z5 U. x- F# t" C
% f$ b) ]2 W/ y" Tset [trade-record-one] of self item (([who] of customer) - 1)9 M+ c7 j2 `  r
[trade-record-all]of self
3 m. P' z' a0 s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- \1 }% X% ?( \1 u
+ Q) e3 c) [9 }& K
set [trade-record-one] of customer item (([who] of self) - 1)1 x0 Q0 T& p; ]3 z
[trade-record-all]of customer
4 i- J$ t; O  f
0 w4 R& w6 D5 ?8 T6 `! b
set [trade-record-one-len] of self length [trade-record-one] of self
/ L- a% [8 j) T$ `
6 r& [2 H7 i4 t: ]! Y* x! s/ i
set trade-record-current( list (timer) (random money-upper-limit))
4 c" W. R+ c) i( [' n
8 n) [* h1 ^2 s$ O
ask self [do-trust]$ z) V" Q1 W0 ^" m
;;
先求ij的信任度! E% d! G' r$ y
1 e$ b$ D; b$ ^! X2 i% _( U
if ([trust-ok] of self)% j4 {# y8 l( f5 X
;;
根据ij的信任度来决定是否与j进行交易[7 Q% N, c  I! K/ g, m2 T* }" J
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 |$ p8 A& Z3 K9 |* r. y# Z7 i4 {
% U" o& Q, T& f
[

2 S3 h$ L, b) y; T& c& ~& q7 z2 g! s5 A2 i' _) n. |
do-trade

0 N& ]1 b  T% ^
0 d2 z4 X) T8 i/ D! @0 q  v. Rupdate-credibility-ijl

2 {) L" T- s; Z9 W( o' ^; f/ h; h4 |! d8 T5 L: l  p1 K1 W
update-credibility-list
8 N% |" O7 y) v4 {0 }% \: k
. G+ Q0 I- _+ A' \* L- @

( c5 \, a6 y! W. @( \' ^9 ~update-global-reputation-list

! `. {. e8 L4 ], y5 j3 _
+ A3 O6 M. s9 ]' X# C- opoll-class
' z7 W  J( ^8 Z1 l
& M$ \( h4 Y. g, U9 f( G7 }
get-color
& h5 V% ]1 ^- K' m
, Z6 ^' j; d* e) E/ `5 k) a+ {
]]( m. F9 _3 }/ A& a7 ?! Y  a+ m

! I  W7 W+ Q9 f. c. J% T9 U; w;;
如果所得的信任度满足条件,则进行交易$ |( f1 s! M7 d. C

2 u. b3 g2 I& w% W7 i2 _[
! C  E* o, L8 V  b

/ \# ~. {  Z7 a: Q% ^8 f! }rt random 360

, w5 y, o1 c! C7 }3 `* i6 ?. ?2 I& u( a! F% E3 N
fd 1
- K' ?0 e+ Y. e% D0 q
( R) Y' B" j; F7 A' m
]
. E4 w( L* _2 L" V1 v0 Y- V, H
& E+ C+ B7 A1 I% e) g4 m
end
  y4 f5 a& g# f- C8 D! z
% t, \) y6 \5 x$ }
to do-trust
6 G. @( @1 I9 |# y, s% @set trust-ok False
- _9 Y) n  A6 S4 ~% w8 |( A7 \5 C, E$ Q7 C  ^

1 L6 |- Q% D  R, C3 Q" J6 K: dlet max-trade-times 0) }& t. S+ i5 L& B5 Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], l9 c4 n, }9 y8 m0 z- R
let max-trade-money 0& z0 ?6 m% b+ C1 C, ^, V. I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], e: `6 M8 l! b, A8 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& @- ~8 b  I2 Q6 O0 v

& X' T7 l, q+ @/ U% f1 ]
$ |- s  o& c6 o' W
get-global-proportion
' Q- `0 a" v4 b4 g) olet trust-value
& K+ @, E3 }3 s* F# H9 G9 alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( O8 ~2 R" ]! b; m7 j
if(trust-value > trade-trust-value)5 S. M$ M4 D8 v; b$ }9 K
[set trust-ok true]6 [1 N  \$ n; D* P/ ^
end, {9 @0 K) i5 v8 Z; a) a
8 U* k+ a. j1 ?# [1 o/ {) ^
to get-global-proportion8 D) ~* i9 M& ?7 _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 |- k% ]8 T9 K* [3 H! w4 a' Y
[set global-proportion 0]
  ^6 _/ [( [7 ^/ a- m- v5 X# c[let i 0: g5 O4 w' R0 j9 M. B
let sum-money 0: g* s0 M6 n+ z$ g3 ]
while[ i < people]
- `- ?6 j: C9 S8 h) Z  R: m0 v[
  d. h- P2 u& [% M0 vif( length (item i
0 l$ Y  L1 m/ `4 h0 O8 \[trade-record-all] of customer) > 3 )
2 S/ ], D# r2 v( X4 s0 N4 C0 T6 I
[! w# _! B3 Y+ \' c1 o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- C! z4 S& j$ i; K  L; t
]
7 j+ S" u: i/ @+ P]
* w% ?% D+ ^; ~5 Olet j 0
0 F  H6 R  X8 k) Dlet note 0
" }' Y- \: ^! }# y2 Uwhile[ j < people]
6 q: B' U' y; }0 K, |, {! ^[( G, k% y+ I7 {4 ?5 M1 G: ~
if( length (item i1 O7 G! b' {  Z5 O
[trade-record-all] of customer) > 3 )

. O, U, X- Q; u' ^2 F[
) g& s; @+ {3 F) o8 Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( r1 I6 H- K$ \% s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& b7 D3 b) g& d+ l% h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' A$ }1 Y+ S, q, X% m  {4 U]
" [  Y( {7 J, A3 F]
! f+ @! ?8 I# a5 \8 t9 Hset global-proportion note* Y+ ^7 \7 P* M; |4 b7 s1 g# ~6 w
]
6 V' H9 x' X/ q4 hend6 }/ [/ L. t2 U( E! b9 ]* N" E
: @* h$ d' A; [9 s  W
to do-trade
% _4 K  b5 t4 ^1 j;;
这个过程实际上是给双方作出评价的过程
9 L: k4 p! E" g) Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: m. E; w/ Q" @! iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' {1 M& ~! X  E, x8 k* g
set trade-record-current lput(timer) trade-record-current
! @  V3 T" v. p;;
评价时间
8 v3 B# R8 C4 r' T- Yask myself [. a5 x2 C) _" H
update-local-reputation% s% G, k7 N8 R- z! V+ z" j. e
set trade-record-current lput([local-reputation] of myself) trade-record-current+ S* Z! W) n) p/ c6 e1 Z2 E7 h
]
/ y5 H3 `5 ?0 z  n! M$ L+ `+ ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( C$ P" v# W  S: H9 l' _;;
将此次交易的记录加入到trade-record-one4 \1 A! \' h; g* A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) G0 U$ S" {! |& u  m  m0 Blet note (item 2 trade-record-current )0 f. Q+ \4 ?, ~' P* Z
set trade-record-current
# q4 \8 L, L$ M* s) |  y3 ~1 G: |$ H(replace-item 2 trade-record-current (item 3 trade-record-current))

$ K! ~1 j: W' a4 o9 n# x8 T. B* gset trade-record-current
9 u) ^+ _' C( h' K(replace-item 3 trade-record-current note)3 M3 F+ S9 _6 m( K

9 J# l" i' q+ t9 W4 i  z

: O$ [7 Y( P: V3 s( aask customer [
8 ^& A( J7 A: ~1 u" _  jupdate-local-reputation& R1 B5 W, V5 X5 S) ]
set trade-record-current
# m8 S/ e0 `, n- {0 Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. \. T7 t. ]% A$ C]- j) W4 u( b. A* [
- u! ~  p( S! t( V+ b! [
8 a! s! @) E: f$ z$ J3 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  ]& v; O% s4 Z+ F' [
) d# R* O/ `6 C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 m& v! Q7 p4 Y5 s% p: p! z. `( x( w;;
将此次交易的记录加入到customertrade-record-all/ _0 v& j$ k% g' N2 L- D5 {
end
6 i/ \; w0 e( Y! ?" ^: c6 d0 W  }- M- c7 k& U
to update-local-reputation
$ G5 Y" s5 y" d0 Aset [trade-record-one-len] of myself length [trade-record-one] of myself
4 x* U+ [. E* K. P/ B
# x9 j4 p8 g9 b: t
8 m; \' C5 h8 N' v* {# {! s+ j( V;;if [trade-record-one-len] of myself > 3
9 c/ Y# G7 C, X9 w
update-neighbor-total1 e" ]* a$ X$ F6 y9 L
;;
更新邻居节点的数目,在此进行
# j7 u4 S* h5 u7 q1 O& alet i 3
" s* j9 h+ S+ n( l. V" @, vlet sum-time 0
# R1 _7 l; j. l  vwhile[i < [trade-record-one-len] of myself]
6 [  Z: z) x) Y7 K[
' ^. |% R$ Q1 L/ n/ N; g6 T1 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ e  K: G' C& `/ i+ w( {' S& M
set i) I" C- I* K- ^% X/ Y  u
( i + 1)

0 g# c8 k# A1 }. _) x]
( }/ a3 M, D# D; i( Olet j 34 V1 |4 S( u  G8 w8 J' X
let sum-money 0$ r+ K; h* M5 J# q# i
while[j < [trade-record-one-len] of myself]
% Y6 [9 N( O6 k[: |- q6 w" e' G/ b$ Q. w( E
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) q. g8 ?0 T- H" w$ c2 A# @% |set j
7 s2 M% R8 Q8 j( j + 1)
( o1 P6 x1 @+ U7 r
]
' j/ @9 D; T& [( Z4 V  h* r6 g. \let k 3" c, i0 B; h4 }& I, U& ?
let power 0* Q1 x; c, I% S$ g
let local 0( F6 l' s; K; u1 X' K. \+ u. D: z
while [k <[trade-record-one-len] of myself]. E) C0 C  K3 F& L% O
[
9 u; p9 M1 N, D. i5 G. D# |set 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) : n: d: ]% H- I5 ]4 P
set k (k + 1)- s, V$ ?$ |8 z6 h- {' ?8 H0 n  L
]+ F5 u; D% F8 I8 h- R6 q/ j
set [local-reputation] of myself (local)3 E0 J9 k* j1 D9 b  `' f
end1 S3 E! p0 ^  N+ w" A( F0 p

  e8 g/ }, S+ I2 Ato update-neighbor-total5 a& I. |( T; X' P4 M; m3 x
' o3 E0 I7 X( g7 b. N# j! v; J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* q: L) ^, R3 u. n
+ n# V3 n. g) b2 l/ K

/ P. ], X' i" G$ i- h$ |% F. tend
; c' \4 d8 Z3 @/ R
. o, I, E9 k6 y! V: ?to update-credibility-ijl
/ d- ~6 N" h3 j* c0 u/ ^( {+ ?6 r
3 T5 V$ V' A+ x& P$ V  k; h;;
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。
4 T7 X% M9 d% F# [: H* X" Dlet l 04 L2 [7 W8 r. `+ n5 c  U" Q
while[ l < people ]$ L. m5 j1 {0 |0 x4 b# ?& s$ J
;;
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
: B. G" R/ v/ k1 W0 X[
" _+ Q7 w$ h, s) z+ O3 }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& b  l: W: m3 D, r- K1 S3 s5 @1 ~$ Oif (trade-record-one-j-l-len > 3): C+ p9 Z8 p& f* x0 n+ b" ?
[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* ~. @) z6 M" I8 u6 h0 X
let i 3
7 r# N4 Q/ R% h" Q0 o+ ^let sum-time 0
+ j3 e! @* }9 |0 ~while[i < trade-record-one-len]
- T9 O  s! l. v  v[8 S. b# R9 }1 G7 y  r- g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# J0 a0 Y+ A1 U" ^set i
3 q7 j7 |+ Q* T% m. `  L% {( i + 1)

, y4 s- s5 `3 B$ l5 A$ w5 f]
' ?6 _0 L% f8 Q! {) @% B$ V! l+ ]. hlet credibility-i-j-l 05 I* e7 D6 Q1 H+ Z8 [3 R- g
;;i
评价(jjl的评价)" e+ N  ?1 O2 S' Z! P& S/ z; u! Y# u
let j 3
$ K, x7 Y0 b3 mlet k 4
+ G- U1 J1 y1 @: }+ R; S( A) i! ~+ @( ~while[j < trade-record-one-len]
0 o+ S3 J- n- a[
1 g+ i" T: c$ E. |, [' _/ qwhile [((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
/ V1 r  \2 ~0 ?- Yset 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)
9 W+ l! ?8 k) T  e; ~set j
; b9 n2 o2 T3 I9 M, i, {( j + 1)

9 L  s  l  H/ _& g& Q" x4 S]- Z; q0 @/ x0 E. \
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 ))
  f8 D& S' x5 o0 D7 D
) o  b2 `5 H* G" N5 v1 @9 \& _. c
" [$ N" p' `3 L& `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ [+ I' B5 x( m, j; f. p/ j;;
及时更新il的评价质量的评价
8 b$ u/ O1 D" f+ |" Z7 u, ]% nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; `% i% D1 p. p% ^; r; R
set l (l + 1)
" t) m0 n1 K: h% ~( m9 y]
% S( z- V7 \# @, T+ F; y+ Vend
& I8 X/ B& f" y2 p: y  D2 a. w; H8 h; J
to update-credibility-list" w6 a/ u- Y$ E  H) z* n, t
let i 03 H0 U( L1 a. O4 a. H: C4 C
while[i < people]
7 y8 s, ^+ O! b( i[* O  c3 i& o" _
let j 0( _- \3 }1 I+ _" W9 {
let note 0
  P7 g6 R# D3 l5 m! Plet k 0: I5 e5 m& t- G& `8 B; A4 @
;;
计作出过评价的邻居节点的数目0 M% o3 N- R% L1 V4 s1 \' g3 @9 h
while[j < people]
2 l% h% h6 o, F[* l# H* i+ }% b
if (item j( [credibility] of turtle (i + 1)) != -1)2 J- {5 F% N2 s* T# G* m
;;
判断是否给本turtle的评价质量做出过评价的节点
0 A. m% U6 g  D" h  ]% _[set note (note + item j ([credibility]of turtle (i + 1)))' r% T; s. e1 R2 C+ x! W
;;*(exp (-(people - 2)))/(people - 2))]
0 X! w0 B/ V1 A
set k (k + 1)
1 K4 k' m  _4 K5 i]7 }$ G! n2 M  I. T" H7 H7 D6 d) }
set j (j + 1)) j( J4 y. M; E+ C
]; J# x& ]7 m- g. [
set note (note *(exp (- (1 / k)))/ k)
) q3 D1 d8 u/ L' g1 k/ Cset credibility-list (replace-item i credibility-list note)
! Y0 R8 p' r2 _set i (i + 1): Z( Y, N7 \8 s0 C  k: F7 [" r; m
]9 x5 m, A2 A$ z2 x
end- H3 |6 ~; d9 A* ^" I) U

9 V3 e8 P7 }. K5 o1 n5 i6 Hto update-global-reputation-list
$ y2 d- i! B) I* Vlet j 0
3 ~  k3 O  \, U! a8 B7 Q7 k# ~/ Dwhile[j < people]
. I. i$ O: Z+ N3 r; \" c[
) r& n$ ?$ C1 H& [# K0 \let new 0
0 u1 L; U$ t$ ~/ U) D;;
暂存新的一个全局声誉
# t- k5 c  u- e( hlet i 0, s; a9 h3 R7 p$ l8 g
let sum-money 0
( b% p' c% S* {. [let credibility-money 08 h  ~9 R2 D. p
while [i < people]
5 }/ t! B, F" \7 ^/ |* y3 D+ L[
, H4 {7 V. w% ]8 D4 mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ n5 n9 Z8 J- s7 o% u- ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 B; q! M6 n9 w$ a" g/ Z1 \$ c% dset i (i + 1)
( o0 H) m- A( \9 D( x1 y" y4 ^$ M]
, G' s( l) [* X: x) Rlet k 07 E3 O) h5 J$ S3 h: A) {; o
let new1 0
; O+ I3 x; A- i% ]. U* o  mwhile [k < people]
: K, C& Y7 G- O1 ][2 }9 |: ?! C) }, i/ u3 [
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)
7 }5 W( ]5 G& C: d& l$ \2 v2 q5 @. mset k (k + 1)
8 i: s8 W! X8 a. [& M6 u+ ~]0 K+ z( {3 t& P, `1 I4 a+ Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  ]8 ~# ?- N2 a! uset global-reputation-list (replace-item j global-reputation-list new)
% g* E/ a" x) i7 Sset j (j + 1), S% \- }: X# Z; x) w  D
]
* d0 C3 i7 f# T8 O# X; wend1 K% y( `% l" _4 i3 U

5 |# J/ x& L1 v9 w$ ^; e9 I! G
: b9 Z+ W! Z# k* W- p' R5 a, y5 E& k& s
to get-color& N% f# b6 @- K! g

  C$ [! x8 ^. Fset color blue

7 e$ }* g0 G9 U1 y5 Oend) M4 O! ~+ j7 o( I0 h

; `, {9 t( ^, e, I/ _) ato poll-class0 A' B% V% l$ b5 R3 b
end# O" `3 _8 N# u$ I0 c( v# n8 R

% c0 s; ]# S: j* V' gto setup-plot1
! N+ }' a! J% M; B% @: B1 e" q/ o  p% R* B7 [$ F% a" Q
set-current-plot "Trends-of-Local-reputation"
8 V* O2 K, W0 U# h5 N9 _

0 A8 }1 A0 J4 \3 a8 Yset-plot-x-range 0 xmax

1 g8 C8 ?8 D; H3 O; D' g' j
; _9 t" C/ L8 X/ y& |set-plot-y-range 0.0 ymax
2 J- Z) C0 K. m: p
end
' o, g% w) E4 J
1 l9 P! Q7 V1 Zto setup-plot26 c* T4 I" H3 o( o1 b& L

. W) Z3 p* M9 M  @* C# F9 z6 Hset-current-plot "Trends-of-global-reputation"

5 x9 ?5 K: x3 N0 H; S( D' _; q/ Y' y" |* ]9 J6 u8 l
set-plot-x-range 0 xmax
6 N) K3 W6 S2 t0 L

* e* @7 O9 @, V0 c( @8 M/ {- Mset-plot-y-range 0.0 ymax
5 {* b/ j6 L7 k
end5 o8 m# l8 t/ a6 L: V

' z* M) O& U2 E2 C2 Tto setup-plot3
7 s3 I3 }+ e/ ^; b; j4 ~% Q
  R! m3 `- t# ^0 gset-current-plot "Trends-of-credibility"
6 k# X/ I0 O% [! m- R
; Z. l. s# r- {3 Y3 ^
set-plot-x-range 0 xmax
% ?* M9 c6 o. m. [$ K* L( [
/ e/ S$ L% C$ C8 ~  y
set-plot-y-range 0.0 ymax
, ?( m/ Z% g2 [3 T* @* h  W. A
end0 a: v% F5 z3 N7 ~& x" O

) T+ c" w' s/ B3 I  Q$ Dto do-plots; l1 t' c4 y( q. e  _
set-current-plot "Trends-of-Local-reputation"
. P' b. s4 Z0 U( u9 A1 K* uset-current-plot-pen "Honest service"; X+ O! o5 ~5 P( X' e* |
end7 j7 q8 S* S5 m4 q; U
: j% h. Y+ e  {, K
[ 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.
2 H" K: U4 ~) s* l1 _/ I& m$ Z
! p' ?' ?% q* j- j( q. }2 \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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