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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:
1 ]$ h6 e- b6 D+ J- H. gto do-business - A) M' L) }( D3 C  _+ }; C% r
rt random 360+ y' B7 u, d+ Z1 b8 s
fd 1
0 G. y; O" c) D0 n  K+ I7 }( w ifelse(other turtles-here != nobody)[
7 X& Y( W) D& O) L/ B  s   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.
  r' ~6 @: r$ _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 s* m  P7 h, l  m' Z: b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 J6 s/ W+ D2 z' d; W2 b   set [trade-record-one-len] of self length [trade-record-one] of self
7 v( K* ~0 H( E   set trade-record-current( list (timer) (random money-upper-limit))( p6 `( z9 m: R
- o" z+ Z5 E# t7 n8 w, Z
问题的提示如下:
+ D* f8 }. Q, O  E
% J( \" _- C" U  P. {1 H7 xerror while turtle 50 running OF in procedure DO-BUSINESS
; ]0 f+ g: W2 c# T7 @& V1 M  called by procedure GO$ H  c  S* X0 m+ z+ N) u  l) |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 n. Q3 ^/ ~" i" Z
(halted running of go)# H+ d" H/ C3 j6 V( d
2 _* H! Z) J. K  _  Z& S
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~~: R' z/ ^' g. r0 _) }( g
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
. ?" O$ ]3 J! {2 u& B( }globals[
7 `9 J8 O' @2 H. f% Bxmax" W% @) Z- Z& H, I" B6 G3 P
ymax, E( p0 {1 a( I% V7 e
global-reputation-list
0 s. M, K$ Z8 x$ v, b
( P6 h) {3 A5 s; n6 O;;
每一个turtle的全局声誉都存在此LIST
% k! F8 G  \5 x$ L' c$ \1 vcredibility-list) m8 @5 i: A  f' _2 Z* Y  j
;;
每一个turtle的评价可信度/ p) a" l" I% x* n8 q% R
honest-service0 s1 l4 g- z, h( x# ^
unhonest-service
! _" _2 d# _/ m/ x# q* qoscillation6 J- @# L9 g: E$ p
rand-dynamic
9 ]- m5 e  `3 k1 b2 `! B]# G$ U0 g, P$ ]) @4 J! L. Y

* w/ g/ V, o' [  X5 O% [- C6 \turtles-own[
/ H0 C. B5 ~; u1 |trade-record-all
) i6 g% D0 W* e5 W& g/ I;;a list of lists,
trade-record-one组成
" y- m8 ]; g" k9 n/ e* w( ctrade-record-one
# [2 k1 N8 y4 ?' ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 k" c" M  p2 g/ e. N
; _. r9 ?6 v4 I: G. H1 e;;[
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]]  D% {( W* S1 {
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]  a: [0 m4 X+ V% D
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. ^9 l/ w  D7 C9 b4 I
neighbor-total0 Q) {7 j# y7 N  R$ ~" j
;;
记录该turtle的邻居节点的数目
! z8 p. `/ ~% X8 M- Atrade-time
! Q5 _! n7 ]0 o: @- d) i;;
当前发生交易的turtle的交易时间+ I! j* r, ~# w4 Z
appraise-give3 c' z0 w" z$ b0 l
;;
当前发生交易时给出的评价, ?' E% W/ C+ @  ?/ [* c
appraise-receive% G5 N7 q/ G+ Z; z# z; p- ?" Z3 z
;;
当前发生交易时收到的评价
3 ^. f# r& o% l8 S% Iappraise-time2 c3 z7 J! Y9 M4 ^
;;
当前发生交易时的评价时间
+ S: k6 s" x# l  m2 H4 v, _0 f& Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; t! _( l/ J$ l$ C/ g% C
trade-times-total
' l6 `0 L9 S% a* V. @( b- {* [;;
与当前turtle的交易总次数
- @+ S/ F( R8 q4 }3 vtrade-money-total
% p# q+ |: Z6 Z4 b/ L9 J;;
与当前turtle的交易总金额
8 ?3 @+ h1 Z1 E1 }local-reputation( G8 y+ }. u5 t, {9 l. Q
global-reputation
/ x5 N$ t' I' Z$ S/ S5 V' ^% ncredibility; \' j2 Z# w; Y3 }  g4 D
;;
评价可信度,每次交易后都需要更新
; g2 y8 }8 l3 v& Wcredibility-all$ K! `) r( H; g" |, ^, L! ~# P  n
;;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: X7 D% R0 z# ^$ t. _

7 g9 b8 t% y* `;;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
4 c' |& E% V6 y+ ]credibility-one( @9 t. Y/ B+ T8 y
;;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
; E" j; t8 g  X2 E# Mglobal-proportion" i* Q" ]# o% J# H1 _6 o
customer7 E" u! h+ z# R
customer-no# p6 _% x& y; t7 s0 U3 y% L
trust-ok% n; G% S- t" C: E9 u; [
trade-record-one-len;;trade-record-one的长度6 I2 T5 Q% e; \8 e* G+ s
]+ c4 a0 O, W/ g4 V3 m
9 f! }) T! d& O' r$ [+ w& e( ]
;;setup procedure! \! h% y$ K, e8 ?4 T
& @& d/ O; u$ w, }2 J
to setup
" t  V4 X1 @; A8 d0 P5 h0 w% R! c, a2 W
ca
1 \7 C! A% m2 S  }1 K& {
1 r* _; z2 a' d
initialize-settings
: `% D$ {! V0 e) \6 H
( a+ S/ Z) M+ y7 H8 O
crt people [setup-turtles]
% k: q4 A! t/ U' z. O3 @
  L! `, j' u3 U; D
reset-timer

8 M2 s" S( n, \: R4 ]4 |- o- R' P! ?
1 `' e9 H9 z, m; D( bpoll-class
3 r: ^' Q( j1 E7 P7 T. e5 l# h0 r

& c* c( n6 W2 {+ y3 r2 x! `setup-plots
6 `& d- a3 A9 y! p

  l: V( l( x8 T8 a; L- B: C# Mdo-plots
5 E: ?% z3 ~' l' t* Z
end& S4 B, i6 {0 a" B
" \0 a) T* V& F9 ?2 E0 ?( O- g1 j# z
to initialize-settings; c- P& q6 ^* x# O
5 p- }6 }; h; l: J' r
set global-reputation-list []

, Q, u" N2 d* F/ ]  ?7 X) e, O* R
/ X  ^, N$ V: Z8 i9 w" E4 Hset credibility-list n-values people [0.5]
4 A  g) N5 B; r: y" Q' {
( g3 X5 L1 G5 k3 u0 _, m7 |
set honest-service 0
5 [' T6 a$ y0 c2 U4 b$ \* V
  l4 _* T# F; [+ [. V* f
set unhonest-service 0

2 g) q) _2 J! V. A3 z, X' Q) Q( p2 a( E- A
set oscillation 0
/ o: H7 ?; N4 K9 i* w
8 \: e: |0 k' C
set rand-dynamic 0

- N; r: E/ G4 [7 m  nend
2 L+ J* r  F. [4 ^, {2 w, i% q4 l; q8 H# p1 Q! g
to setup-turtles " t- ?8 y# x* [& D& R" d
set shape "person"  f9 R& w) K. @
setxy random-xcor random-ycor
7 I% p+ S* [- k9 S) L: vset trade-record-one []( {$ F$ O  C; ]

3 r  V1 u- p- w9 O2 `set trade-record-all n-values people [(list (? + 1) 0 0)]
9 n3 c" I, t. x) m8 W8 m
) w; f2 p, q# G
set trade-record-current []+ Y" b' w4 X$ |4 x3 A
set credibility-receive []
( L" o4 Y9 e: Gset local-reputation 0.5
) x  W- m6 t* H/ K: \' iset neighbor-total 0
% h; L+ G9 b, w# V4 b. Fset trade-times-total 06 Q# k# ]8 Y6 j" p0 N# x0 T
set trade-money-total 0
% G1 p& @. }- e. \# f, W! rset customer nobody2 Z/ @: w! Q1 J+ w6 z5 r4 C
set credibility-all n-values people [creat-credibility]1 {0 q# B7 A# c/ O+ b
set credibility n-values people [-1]
/ e* \' c, [* f. ]/ wget-color
% \, ]! n* I" `, m5 i* u& O

. J, _$ L+ s+ t: p! D# X, ?3 Mend2 K9 o4 K- M( M2 I4 W; N3 V
! V" T* ]2 W  b' w  ^  s
to-report creat-credibility* n6 A) I3 U, I6 ?3 g2 X; z' a
report n-values people [0.5]3 Q2 w- x, p3 I
end
2 u' A: p7 S9 }% ^1 y
3 W7 a+ B- C1 n/ n3 @- _to setup-plots4 Q0 N( F/ \& I$ @1 D* m, Z, w2 S

3 H, ?$ Q- y# N  d+ Y, eset xmax 30

' M: S  [3 E& Z) k7 T. e0 ?: h% F
- U5 Q3 j2 F* `3 B" pset ymax 1.0
" c9 y8 L8 ?& A& ]

/ N- P1 y6 W- k# zclear-all-plots
& D' `' G2 G) J- l5 {, I0 ?4 T) t

9 Y) s' f* C& W9 U  Y* Psetup-plot1

- k! O4 _8 ]7 h% w: k
8 }6 ?8 {1 K( @$ O/ c. Hsetup-plot2
4 `! U- v) b6 _# f. N2 D2 Q

6 G8 O' X7 E3 Jsetup-plot3
7 q. I" {/ }2 y0 m% M$ a
end/ F8 O5 E' ?! t
# E5 A  P: [& j2 s& p
;;run time procedures
- Q+ `/ C8 b& K. |( s& Y
4 t5 v  j$ a' R  `$ l+ D3 lto go1 J* J6 s' ?2 q. c& U6 f0 F

8 Y+ z6 D  v1 P; cask turtles [do-business]
  p# g* G$ j+ \1 Y: g
end
8 A$ y3 h. p7 T( ]# d3 J% T* I$ R, a
* j0 v1 e- t5 x" i+ z2 R3 uto do-business ; r5 K0 A6 V! J! M5 G# w5 x
& c& u& f0 M- G5 U; C0 {" R, b

. [- h6 U/ Y, `% r9 q& N2 `rt random 360
" s" E: w- w; [& F- k' C5 H3 y
6 q+ M4 |. B7 }+ O
fd 1
& {5 j& y: N# o- f- `
$ Z2 T1 M. R4 B* j# \2 x
ifelse(other turtles-here != nobody)[
/ j7 L6 l, b) Z' Z
0 D& [2 ^) T5 X! _
set customer one-of other turtles-here
# `7 Q$ r) D4 q; q
( n" R( w) z7 e4 L: o1 e2 _$ g% k
;; set [customer] of customer myself

% W7 w2 c5 J. T2 n1 \: U; d. U7 P. C7 Q* g% ~- J
set [trade-record-one] of self item (([who] of customer) - 1)* _# z- C9 u7 x; I
[trade-record-all]of self
: @* n( z" N6 i& V+ p6 A$ S) `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 k+ x1 e; y1 l2 F9 m
0 \9 ~) J9 {8 p" [" H
set [trade-record-one] of customer item (([who] of self) - 1)
: G: R2 O- @, \[trade-record-all]of customer

5 o0 M2 s5 F7 s  q" m" }6 A
& R6 J: J. W- M; E, p. \% ]+ x- tset [trade-record-one-len] of self length [trade-record-one] of self

/ ^; S' w3 t* C- h, [9 h1 b% q6 @( f+ A2 c4 d' _$ p
set trade-record-current( list (timer) (random money-upper-limit))

. O$ w9 [. y+ _7 s
4 \# ~& E9 H+ s6 Yask self [do-trust]3 v: H  e' z1 K0 ]
;;
先求ij的信任度9 E4 p0 N  i: c) ~+ [' |
0 A+ `: `& U5 m1 U
if ([trust-ok] of self)
. L' F0 y+ g. `% [  j# P;;
根据ij的信任度来决定是否与j进行交易[0 Y; Y3 W+ Y0 {, ], [: h, _, L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 a7 P/ z, {% Q$ ?
  M& v9 e# s" y3 A2 a9 }  r3 q; `[

& }5 k: ]  f1 b- H
4 B( |6 D% ]8 p# [2 r: Sdo-trade
2 X/ \" S% U5 F- ^! M) ~1 b! A
& K" C) k& i9 t1 {( V7 ^
update-credibility-ijl

. Q/ p( u1 T; J" J1 [
' W8 R2 {9 L& y3 r/ O& S* dupdate-credibility-list
8 I; h7 s: I  P
, e  H: R6 r9 R% l: N1 ~
# b, S3 A! C4 Q. K: j! B, M
update-global-reputation-list
7 F2 w) o: b: e7 |/ ?9 Y
' y& G. x+ R1 |/ @" [& C8 O
poll-class

  B5 x# h2 ]  y. |. v5 z) n
# |+ }; t$ s5 ~* k+ Z7 j! L1 ]get-color
8 G# B/ Z: h/ o( f+ a1 D

7 i* D# @9 `$ K: K3 f" y/ b]]
% i$ L" ^2 g3 i, ~7 _0 j
- D. w% m! w* M4 V" K  x4 K7 i! V;;
如果所得的信任度满足条件,则进行交易' r- |3 U; }" V
- p, N" z. l$ p
[
' ~  h) F. Y- F1 D6 c8 y' y: z; W

$ y+ W4 B1 E; krt random 360
# E+ b9 L( G6 \8 r
2 l0 {, J2 H/ \5 k1 d/ N# c
fd 1

3 {) i( [; K6 U( y
" Q8 s1 j' {% L3 {0 s  d$ z]
$ d0 J  L" Z! A0 r7 D. ?
' f4 A" Z9 e3 ^
end
1 e& I! Z+ g: e& G
0 J3 H2 |6 ?+ W. O8 @
to do-trust ) \% n: g9 B% _( ?7 `
set trust-ok False# N* E/ i$ J! r: ?3 B8 B

' D' |4 q! |4 g9 S9 t

# k3 r; w' i+ n  U2 X3 P" mlet max-trade-times 0
4 ]/ b/ H0 y$ D1 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], G6 t7 l4 r/ j8 N. t9 E* V  U
let max-trade-money 0
7 Z8 Q7 t- b$ E8 a5 Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 f' C( S0 w  W5 o% N3 S8 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( ~  B$ M, P9 r  C% k  `) N# u3 n6 D" @  ^: k* N  k! _/ r6 l
1 I3 g' {. @1 E- Q- t7 }
get-global-proportion
( m% T$ T$ ~0 l1 X* j6 s; wlet trust-value
; T0 B& R+ J4 O8 E/ J& ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 y+ i; J9 F, l5 n; @) D+ vif(trust-value > trade-trust-value)7 ?3 v8 L( E/ I( G/ Q  {4 f8 F
[set trust-ok true]3 g/ `) {0 Y+ ]* p6 Y* p
end9 C. r8 c8 C8 U- H, a4 v/ F
: y8 |2 h& \* @0 }8 M3 H
to get-global-proportion
' l* y! j+ N! j( G' X2 L1 mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 K+ r& a0 S0 c! M5 Q! l
[set global-proportion 0]
- h3 t0 ^5 J+ r0 P[let i 0
6 @; I: r% e# Slet sum-money 0
" @1 Y. k, }7 J( E( mwhile[ i < people]
: R' A+ V0 s0 {3 z6 \; s' |' I[5 x7 T) ?$ H: d. r4 A
if( length (item i
/ X6 q) A4 q# @/ a$ l7 i8 q[trade-record-all] of customer) > 3 )
8 @- z! e4 |5 H" X1 r* M$ ]* L
[
: }; E4 Y8 G# r) P( ]2 H# _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ b9 [( T. A, w' v. i# h
]
* b; \* v  g: D]% W& [. L# A; |& [$ E, M
let j 0
$ J4 @/ u* m" f+ T' Dlet note 0' G) J- ]0 f% S6 O
while[ j < people]
6 f3 ~( }+ L6 k* S. J. L3 W, P[7 L* u& s/ t  o' G! y& H" x
if( length (item i* b' J1 X& f; j  H) S. P3 G% S* m
[trade-record-all] of customer) > 3 )
4 w3 @( `( h; z% y7 s# P9 I% z
[6 L3 _1 \$ u+ Q& J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  p$ ]# k0 r) V0 O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) c# p0 @) R! |* e. b/ }, A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, f) L* p/ O7 `- V3 b& |]1 E$ h9 G4 c! D4 ]. O
]# N5 L( u/ }' S6 T: ~
set global-proportion note
) d% e+ E# T* @, N% F6 ?/ X4 F1 Y]5 w: ^6 _, Z: Z) x& v8 K$ r) F0 G
end
: T3 ~  ~% H4 n* \' e" A0 _# M  `$ u6 L2 g3 y, M" w' `! ]! {2 W
to do-trade
' H% v- O3 d: q# d;;
这个过程实际上是给双方作出评价的过程+ K1 _" }; ~( }* Y$ n. W# m. g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ n6 O/ X# g' G& Z& a; a2 a# g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- j7 Q# o/ C+ _; `set trade-record-current lput(timer) trade-record-current
# j6 G( a9 N) A4 f$ [, n9 {;;
评价时间5 k( T& h6 {- Z9 T
ask myself [& \# T8 Q, l1 {0 M
update-local-reputation+ r: t5 h0 P, Q1 Y& N! u
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 ~2 K$ `1 f) Q0 @: Y+ K]
7 y/ A. F0 y1 Y+ f9 c- e* Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 _" a# ^6 s6 S3 r5 ^! O
;;
将此次交易的记录加入到trade-record-one9 A! S& _; @- f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 `5 A( {  Q$ Tlet note (item 2 trade-record-current )
$ n0 [. j2 ~% B: U1 Z% Uset trade-record-current
( M; N$ m# m' z$ q0 |! p7 s6 h(replace-item 2 trade-record-current (item 3 trade-record-current))

9 t$ p1 l" n( l+ O) Uset trade-record-current
1 i! h: w4 Z: m6 Q8 p(replace-item 3 trade-record-current note)  I8 }$ ?6 ^; P6 S' O$ B) ?8 F
2 A  n& k; @& i+ T* w( s7 i7 f
9 |6 G1 q1 C6 W9 m+ e2 d
ask customer [5 g% l; @, \7 `0 ~  w
update-local-reputation
" V1 y6 v0 p. \set trade-record-current
$ ^1 c6 q  e% q0 Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 o2 m9 i6 [, c6 m
]4 x/ k* T9 x$ [" W

' }- j9 O( c9 `) T+ h; ]: \
, |+ ~. ~( z$ ~" K, ^4 n0 T4 x$ K! Q) ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% V, w7 R( t- A  p. z

% |2 c6 k3 k3 W1 C3 b  [0 Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 Z3 `5 S* c" Y;;
将此次交易的记录加入到customertrade-record-all
5 C4 I# ~+ f- w& fend) c$ `. v' l2 J; g  _
9 N5 B: h1 r* @$ b3 e
to update-local-reputation* M' y0 |' y" o% v
set [trade-record-one-len] of myself length [trade-record-one] of myself& Y+ r6 o) W9 s; @; A8 }
0 d9 J6 B' f/ V  X3 V1 E& N: P# }
4 ^6 m7 R  F/ c& X/ w; p
;;if [trade-record-one-len] of myself > 3

8 v2 u7 g" j9 Q- q! D( _0 Vupdate-neighbor-total
: ^- n" _/ l- U$ a;;
更新邻居节点的数目,在此进行
; G6 _" u/ K2 Plet i 3: W1 Q% w* Y3 n+ W2 d) L) f9 L
let sum-time 0
/ X% r5 Y% R$ swhile[i < [trade-record-one-len] of myself], N, p7 }! W' }- `$ Z
[
$ W: D6 z0 X0 Z) ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 d# g& v7 D9 ~
set i
" f& ~' d. j; w- E) n6 B& P( i + 1)
# Z3 }& X. t% D8 y4 h
]
2 \* J/ h% o- B1 l% a! hlet j 3- o, `+ x$ b% }* g: r1 E6 O
let sum-money 0# I( V5 }: d! P& S0 l+ \6 t) X7 ?. y8 T
while[j < [trade-record-one-len] of myself]
& h3 M8 |4 z6 U; V9 x[
+ I  k5 I0 b( r! _$ Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ ^. g* T2 j) l1 e$ B( @
set j
9 o. K: a$ X: x+ _9 w# W9 V( j + 1)
. D' [0 ^+ X4 A+ O2 A( l
]2 [4 K8 ]2 S1 I$ s8 }3 ^3 G$ M5 B
let k 3
& I9 M% u" ]# q( @; u9 A% z& Glet power 0
: M4 G& z5 C* b4 ?, s- q% W5 S; Tlet local 0
8 n4 ?7 I( v  k& O; H0 ^* Qwhile [k <[trade-record-one-len] of myself]- @$ A2 _; r" R! W
[
! r0 ~4 I, l* z  l! pset 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)
! W+ w  H- O8 ]1 tset k (k + 1)
& E# G1 p' L) K' s" [$ h% _( }: ?5 S]
9 y( ]; C9 n% x- C2 Q  lset [local-reputation] of myself (local)8 ~4 k5 J+ a- X4 b/ M
end5 e5 \% Z  b: o5 n
5 s0 G7 w. K! n! R$ L6 G" W, [
to update-neighbor-total
4 ^' q/ c" T! q' U5 z/ Z8 @. q+ F/ n6 o8 t3 I% t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" n5 e3 q' v7 {* }# k0 [% b. A- p3 p1 d. y) z$ h1 u, B$ _, L

+ l- V* s, v4 o$ ^end
' r; a9 N3 {$ i  d4 s" s' q
  K6 ]& f5 x3 u& Cto update-credibility-ijl 1 i) U- h% E  G! `

8 g- n. X' M+ h' |- y;;
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。
9 z* h# z2 }3 Klet l 0' D/ _- i; ]% s/ m1 B6 E! k
while[ l < people ]" Y3 \& l* F0 a* d& @0 Q
;;
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
  T0 Q$ S$ `5 ~& F; y[
$ Y. ^, {, S, N( @$ O. W- `$ `! Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 o5 |; c: _' H3 N
if (trade-record-one-j-l-len > 3); g% p9 x& u$ S1 Q7 ^% y
[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-one0 }3 ?' T* G0 l0 v. ]3 d# b3 [
let i 3
2 [& g* P$ }/ F$ J: Nlet sum-time 08 g! q" u7 c% O2 t) X6 ~; p# W
while[i < trade-record-one-len]2 Q1 ]8 S+ F+ s0 i9 o& W
[: k& R# ~+ Y% j3 r% u( @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); `- a' r, F3 ?7 K1 s% p
set i
1 |( {- m6 L; n! {) N& ^( i + 1)
' w% g& W: s7 k1 d% |3 F1 o7 C
]
) L# n0 }  Y3 ^& E! I. t1 P0 wlet credibility-i-j-l 0
# Z4 M6 d  r5 F6 o; k;;i
评价(jjl的评价)& b2 h) f  b% h- w) M: Y6 s
let j 3
2 l8 H4 W0 |" [  r& ]2 p: _1 ?; }let k 4* F( n/ \3 Z2 r
while[j < trade-record-one-len]
4 _  H6 T: h6 b/ E. V3 j[4 a+ O5 _" w# e  {4 _& 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% }. n+ n: @% I$ Q- V& h
set 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)# r+ }0 c% Y6 j" h  R- n  B
set j! x3 X  F1 J" `+ X% w/ M& @
( j + 1)

, R: Z) m5 ^' ^$ @6 e) A5 \) V]
$ h2 N9 f+ F# Lset [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 ))/ j2 Y0 L' R1 {* k- N  J1 K

" G$ n3 D  x8 Q- ~
! }. g1 U" j7 X8 ~* `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 x  N: X0 N1 u/ D
;;
及时更新il的评价质量的评价' q  |. o1 w( q! L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* k+ @% k1 H5 }# _  W& Yset l (l + 1)9 u$ h9 r, @1 }7 P  b
]( m- {2 `. q* T& ?* y% [* K; W
end
: z# `$ ]* n( p# a
. {. u) ^( c! D8 d  Sto update-credibility-list
8 o9 V9 N: r7 j7 S: \) C% elet i 0* x$ Q% ]+ u/ h+ Z0 r+ ~" i9 w
while[i < people]
9 S7 U# K+ L* }' X( s% i! h5 r[
' O6 _4 I. s% P: `" |- y$ Rlet j 0  n! n  V2 `/ _. }5 Y* a% f
let note 00 P$ q( L4 ^" v; Z# ?+ o
let k 00 T( r# Y5 n8 O% }7 \- F( S" @
;;
计作出过评价的邻居节点的数目$ a0 ]# E: A0 V# C/ |
while[j < people]# R/ J, |8 J9 z( I
[
+ X) v" i8 t) ~. tif (item j( [credibility] of turtle (i + 1)) != -1)7 O, t, y5 Z4 P. P  K
;;
判断是否给本turtle的评价质量做出过评价的节点/ B- \/ E4 c2 q# {0 V* E" v7 N
[set note (note + item j ([credibility]of turtle (i + 1)))
  F/ S9 J5 i# [; D, @! y* t;;*(exp (-(people - 2)))/(people - 2))]

. _0 ?/ d* t! p. E* V5 Cset k (k + 1)
  D+ l+ L( H8 ?9 C/ X1 x- b- M- y) j]8 n# Q" g3 ]! _2 {
set j (j + 1)
" A0 D) _! z1 X]: ]. D; ~+ ^! S. j4 ]
set note (note *(exp (- (1 / k)))/ k); }/ H* t+ `; u0 e0 q7 m
set credibility-list (replace-item i credibility-list note)* }, c( d- ]# w+ |& p; b% B6 m
set i (i + 1): A8 R. ]1 c' v' i
]3 c: D4 D5 v2 l
end
3 V) @8 E4 V0 G
! o! Q/ ^3 P7 M/ z  Vto update-global-reputation-list0 A! S$ b$ k' N1 W- H
let j 0. u# E1 k% P! d) g
while[j < people]
. h0 g/ _. j( L0 ^% `7 J  J[# `& I* J; [6 P; U! ?0 }! Q6 O
let new 0; v- \  A/ O2 ]* j+ t
;;
暂存新的一个全局声誉
+ N* ?, z- O0 C3 |7 X5 `3 o  _2 y/ f! Q" jlet i 0
5 z8 e9 z+ t5 x5 hlet sum-money 0
( b! i# s, m9 G% Alet credibility-money 0
1 N6 [+ Q5 R6 S, r( `while [i < people]
0 E( @8 j8 Q5 W1 T+ p[
* `. t$ D/ P8 x0 _  Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ |4 @2 Z: \1 R5 N; g3 a6 s; Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 q  q6 j. ]' |" D, w! xset i (i + 1): Y- E8 w2 Y8 n2 [+ {# T9 k
], R4 @0 I4 q! m; l$ Q$ R8 g/ M
let k 0
% s9 X5 W8 A3 c$ C- w) O% Elet new1 0
1 z1 I3 \+ @! @8 C! d+ w& T( Y7 ~while [k < people]- G3 s% [, i& \4 X2 q8 J% d
[
9 ?, B2 Q' {# {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)1 y+ ]; h+ A/ w! ]
set k (k + 1): g5 K7 ^3 z  Z" \, W# g
]+ U5 z% {6 N, P, H0 v; P- r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 w" s$ _3 B5 q4 i$ F1 |9 U
set global-reputation-list (replace-item j global-reputation-list new)5 x1 |* }9 s% [& w
set j (j + 1)$ p' ~$ B! O/ H: ]- H. y- ?  s; a
]
# g' M3 ], V, ]& y1 b* wend5 l1 r7 a3 I; |/ e; O! B

3 v' ^2 u/ {# |2 `) K" r2 o/ f4 ~2 F3 @4 v
5 Y  d7 P+ s0 j$ m7 |( i- c
to get-color; t! c0 d" A7 E! k7 G: c
6 n% g) p% z" }- C
set color blue

8 E  Q) }6 A/ ~8 }end
3 r% X2 }! C. ]9 d% W: J' H3 D2 z6 U/ k1 e6 i2 Y& Y
to poll-class* e- i. B+ C% p, ^. g
end
  E# w' i  t, U/ i3 c5 G$ y9 @$ J
' ]& K; |+ i# t: W" q; S. M" fto setup-plot1
& t/ U$ }+ w" @2 g" `- }
' ?7 v& W$ Y# r, Z) Uset-current-plot "Trends-of-Local-reputation"
/ q$ ^2 B; d" m# X5 |

: N! s! w) g' _6 {3 Y! ^6 uset-plot-x-range 0 xmax

$ m+ C5 I+ c* ~  j7 j- S' q1 E( ]. @
$ K- I4 W7 P% _- f. S# rset-plot-y-range 0.0 ymax

/ H! W5 I8 l1 z4 P. `end: l1 U: |) m3 q1 Q7 i
2 `  e8 q6 h2 f1 U5 x
to setup-plot2  E& E" q) _7 @. X# g. U  n

  C% u7 j8 q* [- p5 ^set-current-plot "Trends-of-global-reputation"

6 K+ e* [6 N7 O- ^: h4 w' E6 I% o' L( u, ~5 T# z8 g" j3 R
set-plot-x-range 0 xmax
& k; n7 o( ~( [8 C2 s/ h- K% H/ f
" T& A7 h6 n! e: a
set-plot-y-range 0.0 ymax

! `2 F8 ^$ e$ N$ y% _; Dend. d5 d( J( v; y5 W/ z- h7 J8 u

2 a3 g2 U4 W; D; W  k- h, m: u: dto setup-plot3  M5 F% p! Y# [) j; O6 R

' J7 B9 J/ c" p/ {6 eset-current-plot "Trends-of-credibility"

5 R" _4 B! }" `1 }% e7 n& |4 Q( R) [
% _8 c3 e7 s8 B! w) t; G2 fset-plot-x-range 0 xmax
, z+ a$ B' R! A) s1 K$ i4 C5 j

4 c3 i4 V3 x3 S  Y8 ~# V/ r: Oset-plot-y-range 0.0 ymax

7 I% U5 f0 a6 k2 fend2 a; ^+ p7 L/ [" l4 q

7 n1 J: f  F( r0 D+ p; U, lto do-plots% x. h& P; b& ?/ N* D
set-current-plot "Trends-of-Local-reputation", ^' o" l1 _6 Y* {) @. r
set-current-plot-pen "Honest service"& K; M7 S# n) {/ g
end& U8 p: m, m* O5 I# t
* Z8 |- `& I& b* D
[ 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.
6 b5 G+ r* b3 j4 l* c$ f5 z* S( c5 W: Q
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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