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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:, M  P4 Y% w0 Q& M8 V
to do-business 0 l' W+ S# e1 F7 c9 m; x
rt random 360
: j3 W1 l' C0 h2 A% K# O fd 1
# |' R; W! M' s  p5 x9 }: m ifelse(other turtles-here != nobody)[4 U$ u, T" {7 o% E( P
   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/ s7 m6 c6 o, F" J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & J3 W- S  H( s* ~# L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# M$ j; Y" Z! v! z
   set [trade-record-one-len] of self length [trade-record-one] of self3 c" f- Z$ ^4 o$ }% F7 x2 l
   set trade-record-current( list (timer) (random money-upper-limit))0 x" E/ v" P8 R

' M( ^+ U7 w1 N$ @% q问题的提示如下:
! e8 @* v! l' P% U9 T9 B4 t7 o7 W, i  b$ w8 U
error while turtle 50 running OF in procedure DO-BUSINESS+ x7 D6 i1 `* `' a# i6 |
  called by procedure GO
- L( I( Y7 g4 q* N- l/ qOF expected input to be a turtle agentset or turtle but got NOBODY instead.  v; J- n, H9 I# {8 n
(halted running of go)
$ }5 |( b) y* R( ?7 F7 y
9 O' V) ^9 L: v9 |3 L2 k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~~" v8 K3 N& `( x% i! D
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
+ h  k$ k! d. W) D' z* ?globals[/ r4 [5 G& U6 c
xmax
7 y4 U9 }( g, R3 [4 |& [ymax5 e0 |' C4 C  E4 S+ x* b
global-reputation-list
) B$ B$ V& X6 ?; t6 L6 i9 ]
  e) F& m, b, z( Z7 i/ ?; k3 o;;
每一个turtle的全局声誉都存在此LIST3 {3 t$ j+ |6 I' ~) u! }& E
credibility-list
$ J0 s# j) G5 x1 y( T;;
每一个turtle的评价可信度1 n, x8 P* i# J9 V; x3 t. K- M2 ^
honest-service
; ?: Y" s0 A" K" u: b9 sunhonest-service
1 e- D+ n/ I1 x5 y  w) d* o  Moscillation4 V5 _" t' i/ ~* P! N0 p
rand-dynamic
# Q" G- a7 p: U; d]2 J* M9 g2 [* R

% `  H$ T9 ?! O, _" gturtles-own[/ h9 y4 g* C+ o: y7 w" b* @2 F  V
trade-record-all
: m1 K0 ^+ ?8 @1 w2 m) {" T3 |* E;;a list of lists,
trade-record-one组成8 M1 h$ ]5 R) J9 q- G7 x2 R
trade-record-one
1 o) k6 @( k# {1 H8 u0 L;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. P7 v% }3 o0 a
' Q' ^1 \+ |0 x* ]  s. D5 @
;;[
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]]
* X1 N! e- `9 [; R7 rtrade-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]: ]! L0 [9 I3 P5 y8 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" K9 g6 b7 c+ B4 w) N, W; ?% D$ P
neighbor-total' u( ?" D/ `; [+ Q
;;
记录该turtle的邻居节点的数目. y! Q+ g% j. ?3 v9 {
trade-time4 T$ G/ D" v( y1 `& M' }: J
;;
当前发生交易的turtle的交易时间
* Y1 U6 Z/ m. A( [5 i3 Oappraise-give! J3 _8 Q! A9 W0 B
;;
当前发生交易时给出的评价
# _' o! x  k3 T- ~% X: [appraise-receive1 p. b8 Y8 v4 }1 t4 l
;;
当前发生交易时收到的评价
) ~. z& o( R$ h8 d+ r5 T9 N: I( Zappraise-time1 n4 M' T' e- U& Q
;;
当前发生交易时的评价时间
2 N- f0 U7 t% f6 Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# m- M2 @* ^3 k, }trade-times-total0 ~" N9 d2 V" i
;;
与当前turtle的交易总次数( `% @9 w  W( E6 P
trade-money-total$ z3 ~& a; f& e- Q+ t6 o
;;
与当前turtle的交易总金额. M; R/ c3 T) M5 P% r/ Q- h
local-reputation& L8 i6 z* y8 E: `+ \7 S
global-reputation" y. S& d, W2 R* ^8 J5 |
credibility0 C& f9 X+ z, b4 J3 B8 i
;;
评价可信度,每次交易后都需要更新
0 p9 f, F+ t* k& E( T4 ^0 b' j# Kcredibility-all
1 F* C$ Z+ b2 o4 q& t% L: M;;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+ v5 q" t9 e3 F" w0 ?* ~; l6 ~

; w4 m" k# h5 j  j" B/ f: F, G;;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
" F; ], X: A) ~3 J' ocredibility-one% g  i" a0 K! ?& |
;;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
/ D% q3 z) w8 M; E9 Oglobal-proportion
( L; B/ `: l: [customer; l' {+ a8 N! z. Z$ W0 ^% Z8 B  x
customer-no9 N, |& T+ s+ ~+ O" B
trust-ok
* g/ M% d0 b( x9 c8 e* m8 Y% r% g) o  ktrade-record-one-len;;trade-record-one的长度) ]0 F- O7 d) U' N) f% [
]% q0 G. k4 q4 H7 @

7 Q0 B$ L$ L; v0 u9 \  Z( M;;setup procedure- f. K: h% l$ E. e# @4 F
8 o( Z+ Q. ^1 _# E0 H. @: {
to setup
8 w" D8 F" [, j0 N, X2 T3 d/ O$ m- d" `. j
ca
0 n# g4 D2 g# b8 f0 C1 ^) s% H4 [

3 W' O: b; q$ |, S" S  Rinitialize-settings
1 w: }( ^. O8 |4 u) h

- X4 J$ k, d" M2 s  c" [crt people [setup-turtles]

- ~8 |. p0 w7 |$ C2 Q3 [" D$ ?! `" F: ^/ v5 _7 d3 w
reset-timer

( k5 X. z  N; J$ w3 n% Z2 H3 k
- {! z' k  E! U# `poll-class
* g/ \" v2 {8 t7 B5 A1 k3 O

7 Q) B6 m( R6 q; M/ ]( ^setup-plots
3 t' \' D& S) C# r4 ]& d
0 j, p, d4 f* }& H$ i, T9 H
do-plots

' |/ `+ d' X* r, q" k( rend
  u% f. N  h( Z" C8 b
5 w) F9 }2 Y! rto initialize-settings
  h( {) @" \$ L# `: R- Y( T
- b# _$ h& x& P; H9 L9 c0 _; [set global-reputation-list []
* b3 |# x7 a; N3 X
, k$ v$ P7 O! T4 n, E
set credibility-list n-values people [0.5]
5 Y& z% d1 E, o

; I, k) {1 Y+ o$ o7 F& x+ Qset honest-service 0
& J/ i7 i4 ~( g4 h( P) Q* _

; S8 M: x1 q. z, b- rset unhonest-service 0
0 Q% S% s7 U% B) y0 i
& c* O# d( M3 j$ Y4 S1 T4 Q
set oscillation 0
/ I0 f8 P+ f5 ~/ M: ]$ @
( N# d2 E' |/ C# s! q
set rand-dynamic 0
: m) _1 y( ?8 r7 A/ A
end
# F6 q( w7 z2 j, k' j% j6 ~6 a4 N7 e5 e% |
to setup-turtles
, J. g! ?0 ?- F) V- X* M; @- Kset shape "person"
2 m$ z8 z7 b: |/ ?1 C( u/ qsetxy random-xcor random-ycor! w- E+ F0 b/ d8 x. I, G4 ?8 q
set trade-record-one []
4 S( }* w9 C6 l9 O

- J5 b* R) H8 B6 R* M* iset trade-record-all n-values people [(list (? + 1) 0 0)] 0 N; D' H6 ~5 C
% X& }1 c  g# F. u  a- T: c) k, k/ K
set trade-record-current []
2 V7 A* p, C& X# _; o4 Y* Dset credibility-receive []
  T1 Q! ]( `9 O% {8 Dset local-reputation 0.52 f7 U1 L! f0 ~* A, d
set neighbor-total 0' L; l  D0 X% Q% A% c' x% k
set trade-times-total 0
) Z( J( F: D6 o7 z% V7 v& Eset trade-money-total 0; e$ ^9 T  k' E( }  u
set customer nobody
2 {7 c( _; i* [set credibility-all n-values people [creat-credibility]( C( o5 x% p3 q7 D; x6 P; Q
set credibility n-values people [-1]
/ {- o, y+ P/ n2 ?4 K5 W7 pget-color
. @0 G3 W% k# G8 Q$ U- ]9 z  A/ o2 G
4 N/ S8 x' E; O
end( P1 y# r6 |  e5 {( K" G

& t9 U( \  H( S. w! j0 [to-report creat-credibility
( a. Y/ n+ `" N& ireport n-values people [0.5], h2 ?2 |5 E0 ^/ {
end( B* \& |, M7 {; S& H
+ t1 `$ W" d, x3 K5 v
to setup-plots
7 O$ p7 n/ M7 V7 {
7 e. v% i5 K$ J" a, Dset xmax 30

$ x( h* F( j7 z  g
  h8 y. M% m0 i' v6 z% _" V& T" Xset ymax 1.0

4 V  {8 G! U/ J$ M: c
* C% `2 I5 {: B1 n  _5 t7 J0 Z) N4 uclear-all-plots

3 B- a* L3 c" K* }
- m* X, _/ X8 Jsetup-plot1
1 [& S2 {5 F' e. W7 Z  |0 }

2 u  M! P1 K% h- @# h# ^7 qsetup-plot2
. t) p6 k+ ^2 ^

! N' Z1 ^+ o! B( j) N7 ~/ w" V( Ssetup-plot3

  y" Y& W. \( [& r3 Hend
  O$ O6 r! m/ t& B! L/ S* g% {+ X% Y" F
;;run time procedures9 G+ K- J5 _1 M: v4 v0 b2 `) U
. G+ p* j: _% x' ]9 C
to go9 b9 M8 x/ E$ C4 E

/ {$ M+ g. J4 O' \ask turtles [do-business]

8 K# f8 V2 Y6 d# }3 t7 G% n1 Gend- \1 a$ J2 O. g0 g/ Y5 U
6 {( V; y3 F$ p
to do-business
. M1 w! S, [/ }5 }1 b
" H8 u9 ^0 W: v9 c3 w  g1 \

2 @; n# Z/ w5 S9 t! urt random 360
  F8 E& p6 b$ \' x/ ~7 G
/ ^5 ~- o5 O* x0 M% X9 b
fd 1
; O5 k9 Z  `. P) ^7 E
' E9 ]- N. v* Q# V, K0 [: O4 Y
ifelse(other turtles-here != nobody)[

% }4 m4 s, X: W  b
. m7 K/ W$ V* L/ Kset customer one-of other turtles-here

( i7 }. F/ X0 f
' q9 c3 e! D2 u& W7 ^' };; set [customer] of customer myself

# x; f% W0 n$ f& B7 }! Z* K7 P7 z( r4 |5 c' |
set [trade-record-one] of self item (([who] of customer) - 1)! h! N2 I) V) j! D1 G( ^
[trade-record-all]of self
1 T7 M# d7 d2 _; k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! @/ T) q0 l1 X/ v) I, E7 Z& I/ P8 P' c. [  ?
set [trade-record-one] of customer item (([who] of self) - 1)- B2 M' w6 _; I
[trade-record-all]of customer

  D$ Z' u1 m# D& I. U
) O# F7 i+ I: R0 c) Nset [trade-record-one-len] of self length [trade-record-one] of self

& w2 D# m& r0 g7 p  ]# b+ U0 \! T) L0 ~; ~# |" I
set trade-record-current( list (timer) (random money-upper-limit))

+ B/ H6 t0 U9 B# \, `6 S5 J: n# a" V5 C* _" Y" X  A
ask self [do-trust]! p! I/ D( W3 g% d* o* ]* q- D  o9 `
;;
先求ij的信任度
" k' a1 X, Y) b5 b4 Y
9 c! j8 P4 L; C" L0 }1 {0 Vif ([trust-ok] of self)
  E, y' H3 f2 X# ^9 C5 m;;
根据ij的信任度来决定是否与j进行交易[
8 T% f7 J* J9 {' }& E6 W$ b( v9 b7 d( Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ Z5 c6 v# W2 Z/ {  R5 l: z# X6 k5 w& X$ C  n, Y
[

2 E' w- L0 u0 E2 a* E. h1 T! U
& J; S. e' c5 `# X* q  F4 `/ H  ndo-trade
/ ]& T. @9 s& V2 a- z2 ]( K; _2 C. c

4 @( e0 Q& o, a" Dupdate-credibility-ijl
7 N, P& f4 T+ j) q7 s

% [2 z! w/ H6 i! l7 m5 v8 n0 dupdate-credibility-list
. u( G) A* {% ^5 N4 F/ F* O

* e5 t0 g$ l/ @% e' t9 f& E5 X3 a3 m" _6 e0 T; ]
update-global-reputation-list

) F/ j* `) `; O) z: @. V  \( m- |
# a: B; [% U# z4 \poll-class

1 g& r' X+ M, w- b8 a
' f5 o( |" {$ l! d' y8 Jget-color
" k& f1 \) G, q0 ]' Q, m
! t6 W  i  J/ Z+ Y8 U6 n: L
]]! p% M2 w& q; K1 X; h
9 M% z) D' p& g& P7 ^( h/ x
;;
如果所得的信任度满足条件,则进行交易# G2 R! [! `  A) {: u% ]

6 ~* T3 W: z1 }2 ?' ~& f[
9 c$ K/ g1 J/ B

9 I( b+ `( B! c3 |) j, W+ Z, brt random 360

. E; E0 ]* E% {/ R+ j2 c
4 y! i5 d8 L9 k: R# v- Q/ l& D7 kfd 1
" M9 Q  r$ n! e2 \2 Y( L
9 l& L3 L. N+ A
]

  b* ?  h- D$ L4 j, q5 a, ?0 n% ]
2 ?) v9 C$ n9 `1 uend

, e) M* _0 c9 ?. \$ g9 z# V
1 O, `/ u: j; |& R; ?, Lto do-trust 2 a, {$ y) O: r7 B& e8 |
set trust-ok False) `4 y- M* p# m, ]& `
* O6 S: B* e/ z! D
3 A, h1 e2 e" t3 x; ?! u* c
let max-trade-times 01 J6 v$ J+ \9 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* ]+ U# `2 B1 K
let max-trade-money 0
1 [9 `) r6 Z+ j- eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% s4 x0 h: Z6 q1 q! ]( P6 H  v( slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ Z$ B, B$ f' \  @7 H
' p9 ~- B1 _& T! o9 t4 W; }
- }7 F* X8 L) ?  X
get-global-proportion
. r, k. ?/ q3 Wlet trust-value9 \' U* i/ e3 b0 `: W
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)
! q; B  B- m6 t* X$ b6 P
if(trust-value > trade-trust-value); ]) l5 U; s( V8 i! D9 k3 h$ ?# T0 w8 |4 u
[set trust-ok true]
1 s6 G, T8 H2 H2 f6 @: z: pend
: B6 h: g6 L$ \8 N: b4 J* J
! C) i, A! G( H* ^4 r7 [2 gto get-global-proportion
  y. Y" V/ F$ g+ C: B0 Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 {7 y! |+ H; ]) ~* z! a[set global-proportion 0], I. O1 o' `5 F( M) N
[let i 0; V8 J# y+ g( j/ }5 w
let sum-money 00 f/ v' `7 O0 C6 ~  U+ u% P6 e" q
while[ i < people]
" a2 G% G7 _3 V( h, A+ z[
- J/ O. N" q0 f0 dif( length (item i
3 F: i$ L& n+ N$ b8 d[trade-record-all] of customer) > 3 )
1 {1 n# k, ]4 {" D& j0 ]
[- X+ d" r, h$ u5 N! m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: ^( b( G5 w: x' \]
+ p0 Z( v7 F4 D! r' K1 U& h9 r]
2 c) c$ ]5 C* a3 h$ mlet j 0
* w9 f" K( C2 @% Rlet note 04 N% Z+ w' x6 i
while[ j < people]% w! j, ~! `+ N) Q% V; f
[
, @' a! e2 o  h% Z( zif( length (item i
% T- x& q+ G8 \- V; Z- T/ r[trade-record-all] of customer) > 3 )
: B! }8 p: J1 U) @" i
[
! h5 T0 h$ C1 Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); ~- s5 X" V# c$ h  u+ [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ Y" H( n2 M* B" c" e; d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! K  c% i% Z( }$ `
]
8 ?' G0 s2 E; X]  O# F' e' K. _! ?. W$ G
set global-proportion note
1 v& B, o/ v  U1 u% Z, [* A& Y]8 {0 o6 P$ b# b% a. @) ]
end) y5 ?& P8 N7 W# B& |

4 a: K0 g! G8 n1 P5 e6 r; y  i; kto do-trade
( L& x* Y( h, t- v;;
这个过程实际上是给双方作出评价的过程, T2 T, H/ E& P+ o/ t% N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! I- \- d( h, T8 x1 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# }9 F- ?: b4 g5 m( r$ Q; A; E+ ~set trade-record-current lput(timer) trade-record-current  c" }0 {/ I  i0 Q) `( K' M
;;
评价时间! l3 B% T' J0 y* j8 r
ask myself [" f7 A: S2 |+ T  C! _
update-local-reputation
- x4 V' m# `- q+ n3 Pset trade-record-current lput([local-reputation] of myself) trade-record-current7 t) o9 c! r4 m
]( S' h) t3 o" `% E7 R0 l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# o1 e* w2 y# _1 t6 l$ ?# v1 l;;
将此次交易的记录加入到trade-record-one* r, v& J% Q1 U: i. \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! a2 V9 r1 y' s5 Q# v9 Slet note (item 2 trade-record-current )
- B$ l0 l( v% ?+ `/ s" {7 Iset trade-record-current8 Q3 }0 Z1 V" {: K/ T
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 l0 e& `, e0 e1 A, \set trade-record-current
+ {/ D  M+ g8 G% q(replace-item 3 trade-record-current note)7 }' @' n0 x- D( a% g

& q6 }- b( U' T
* D' I) S- {. ~( i* E+ C
ask customer [
) {# p" r) [$ d( Kupdate-local-reputation7 ?2 i: ?/ o1 C
set trade-record-current8 o5 v3 o1 {4 Q& x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ a& H1 Y0 b6 |6 X' B
]
( E, f' a  W7 o% m6 r% @) d
" q, j- d, l& S

: ?& N% A$ ], }- a  b9 _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& U# U6 a1 O' H6 ^! Z4 N  o4 a) w

6 A4 x/ O6 X4 uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 `. H( i" M! Q3 Q2 x2 |: }, O
;;
将此次交易的记录加入到customertrade-record-all
) @9 K: \% d+ g. k6 {6 tend
* k$ z5 ]/ j. F
$ w" U9 v. u0 j' Zto update-local-reputation" k+ {) I, {5 k
set [trade-record-one-len] of myself length [trade-record-one] of myself
' B. O' W9 U  {( r) G
$ w$ g' b, N; G( ]/ ~, N0 w
% L5 Y* T% _  F& T7 G* d" t;;if [trade-record-one-len] of myself > 3

: \& w, y$ z2 f  U, pupdate-neighbor-total
, P- |, v, ^5 c$ Z2 C;;
更新邻居节点的数目,在此进行  P: O  ?* R& i8 p8 A9 ^  a, |& G
let i 3
- x" x; i  ]- w1 Klet sum-time 0
6 X& g" O" f2 E2 ~, `0 Swhile[i < [trade-record-one-len] of myself]4 S/ Z4 `4 E+ B) ^: M
[/ s& a" Y7 B+ Y' P  S: G) Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) M: o/ |- `# x  Wset i! M' R8 Z& O8 y' M7 k
( i + 1)

; B* A' g: h) n9 M- J+ Y]3 K9 l6 t: k6 @' l7 }+ N
let j 33 y- u3 _0 g0 x7 i1 E
let sum-money 0
$ C" [8 M4 W5 I: Qwhile[j < [trade-record-one-len] of myself]
. l. c/ g. b2 _5 O[
' b$ d, \; }9 @1 @' Oset 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 C2 @, {2 @2 p% nset j+ b' l5 F) E, L0 p" W
( j + 1)
7 i5 M* E! f- p! o( S2 w5 ~
]
0 Y9 j  e" ?' Z% i' Glet k 3: A) {& _* @% v' o; X
let power 0* X& Y' o' H1 F7 K
let local 0
" M1 }2 P7 H- C9 C/ N' rwhile [k <[trade-record-one-len] of myself]: M  I7 {: Q. c" {' ^- F: i, q
[
4 L6 _9 N( @7 T! ^( I% sset 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)
3 G# b& q: P! ?  J% e6 Fset k (k + 1)
5 p$ W2 M6 ]; h2 w/ l8 M; w+ M]
; A  k- }4 F2 _0 U+ wset [local-reputation] of myself (local)6 g. Y5 N# J2 c- V: G! Y
end
/ Q1 Y; s, n$ l9 D/ ?& p- T! m2 ~$ C% |5 B! G8 a/ K6 x+ n
to update-neighbor-total
' x; j. A5 r& M) o" s. |
: i& r) E6 i& [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" K% H, i% Q  p6 k8 O; N

7 r4 M* D0 Z0 ?1 s+ a+ R( J

' A8 `: Q! @) ]* jend
" [, x5 H7 i. |6 Q- g  s  @- n; }- ?; \% q* S) Q4 ]6 ^: ~- g7 }
to update-credibility-ijl
; A/ q9 e" e- r8 d8 v; S5 r8 _; T; y" @3 c. ?1 x! O$ R& {% K- b
;;
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。, E0 g: Y9 f0 ]- f* f# T, `
let l 0
+ k9 b) K" W, m0 V( lwhile[ l < people ]* l( W3 u1 t+ i
;;
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
) |1 j# F* u; I) G[( V) M& z7 O1 z7 p9 ?- G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" Y1 }/ V" o; c, a/ T
if (trade-record-one-j-l-len > 3)
9 ~* v# H+ B3 i[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( \& }$ q+ \* U- N9 ?9 `
let i 3
* y, H# {: ^; s* U! \- Flet sum-time 0
7 |+ }3 J, K1 b5 J& F+ |while[i < trade-record-one-len]& M% k: A2 _/ ?, W% g  j
[
! _% P% o2 e& U- o# Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 L: [( A0 u' [set i5 I2 t3 q$ K7 j$ v* |. Q" J
( i + 1)
, _/ t. p/ d9 Y7 F
]$ \7 d" E, G; E" k; u: L& q$ U  [
let credibility-i-j-l 0# q4 B# b" d; |
;;i
评价(jjl的评价)
8 B2 ~9 [6 `: n! n8 _7 Tlet j 3
! b/ W' G# P/ j# A/ \2 klet k 42 I) q0 f. l: o. X% W
while[j < trade-record-one-len]- E$ c; H+ ?7 H9 |7 {0 f
[
7 }+ y' U3 H' I! `5 awhile [((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, m& q: h1 B1 p" P
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)
: ^1 s, _' f( B7 _set j" o: @  e" s- K
( j + 1)

) q! V# g9 Y' ]/ r]
! }& F. s( A5 R2 u: C1 Eset [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 ))& u; `( O2 u: ~( I, t& h

: ^/ J, ^( d8 N

! }. r/ n" E, F, ]: I+ D2 @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  }8 r- t' L* V* _  S
;;
及时更新il的评价质量的评价$ C- J" }* ~  }5 J# H0 ?' e5 z  b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: u6 S# m  B- Z. {9 [, b0 V
set l (l + 1)
; d4 r4 b% E: i6 J4 m# C]3 M$ X! p" ?' s
end9 X0 E* P- A0 U; U0 d' C! k+ {& v
- J: T$ Y' v. p/ @
to update-credibility-list* X5 |; j3 N: C% S* V+ g7 w6 n7 `5 z
let i 0
+ M' x5 w" m5 iwhile[i < people]
! \- H8 q/ r7 I[4 a/ V* y$ t, W3 z; _, v
let j 0
% u8 |+ `$ o: i5 `& I# |  r- Plet note 0) G; f- P6 q$ N3 r1 f0 j* J
let k 0
- `" a8 L% D9 b: u9 k0 U;;
计作出过评价的邻居节点的数目
0 c$ }3 Q' ?1 s( _while[j < people]1 t$ Y& `: N: s- S
[% p; o# A  P8 F( I, b
if (item j( [credibility] of turtle (i + 1)) != -1)
* p; u9 Y. X: u) [4 p;;
判断是否给本turtle的评价质量做出过评价的节点
4 D* N+ x7 C5 V* J* F4 H[set note (note + item j ([credibility]of turtle (i + 1)))7 b0 c% }$ a# _
;;*(exp (-(people - 2)))/(people - 2))]
/ n/ k- T* t9 g+ {! U' P
set k (k + 1)
! Q  I" W5 \! }8 h5 E]
' L! t. }! u: c# x( j3 ]set j (j + 1)* O% ]' e4 {% s4 R0 C: q
]$ n! C3 U/ x$ p/ P5 Z$ F- V( z8 }
set note (note *(exp (- (1 / k)))/ k)
4 `. c6 Y9 y2 q  yset credibility-list (replace-item i credibility-list note)
4 O) K; a' D5 E) A( q5 k* `* i8 J) m( Gset i (i + 1)
& h' N6 x8 Y% ~6 {) S]
& Z' l# D  r2 A: y6 i  Aend$ p* a. B5 R2 f7 m+ g( e: O
' R- [0 r* s4 F# I- F& v
to update-global-reputation-list
5 y5 j' V  s& |1 U$ _let j 0
" ^  `4 B, }. Z& g% d- Awhile[j < people]/ Y; \% A/ _# w6 s0 l9 @
[* A; ]5 Z5 `- h' e% m, q
let new 0; B  r1 S  q$ b- T* j5 f
;;
暂存新的一个全局声誉# ]5 y! U) T4 J! X5 }+ n2 K# h9 U0 n  P
let i 0
" o0 B( i) ~% x! N7 C/ Y6 A+ olet sum-money 0- R9 E: R8 l5 n7 h1 }8 i
let credibility-money 0
& H* B+ L3 R. p( g7 n. Q* }4 Ewhile [i < people]
$ O0 M3 `9 G0 B, x[3 s$ U7 d/ P$ T! o. x3 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 O2 S0 F" D/ S# b6 t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- q0 \( O8 s$ a/ jset i (i + 1)& t5 m% Y  s+ I0 n
]+ D( P% }6 i9 N* ]8 A* X8 S
let k 02 J, c2 {  t) F2 f2 t% k1 h
let new1 0( R+ o/ {* b& h# G
while [k < people]
& u% X* W1 z/ j$ F[
1 O8 \" x" \& Cset 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 L" t2 l2 D1 t4 o+ `
set k (k + 1)) A1 M) i/ o9 v5 R9 l( O' z
]
1 l& h7 J3 P+ n5 b2 C' D/ nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % S' W, N; i% }/ e6 c) X: f
set global-reputation-list (replace-item j global-reputation-list new)
, H4 m6 r/ t, s; bset j (j + 1)8 q3 g) d2 e4 A4 B
]0 L. t0 x$ o. H7 h
end
# G% \+ }3 t1 {. y
6 ]( a+ A0 E; C6 d
6 ]% c9 S$ `4 M( R) l$ Q& \
! ^8 o( x3 o) \+ |. n4 lto get-color! q/ N% v$ f$ _) H; ^+ o
, ?' w' L4 R1 }. j( h+ Y! l& S/ x
set color blue
+ ]  Z4 V6 S: n% R
end! d3 p4 Z. [3 L; ^: t$ Z
; T: G) K+ F' J1 u9 B) L) d
to poll-class2 A! |/ R& u# G) C* b0 r
end
2 L1 t, v! x0 y% }* h- r
& a3 ?0 U2 m: @; s7 S9 x4 vto setup-plot1
" b) u3 }$ ]' x5 h$ x! s/ N8 n- ?4 Z( ]1 e
set-current-plot "Trends-of-Local-reputation"
. o6 N8 ?* }7 e6 y/ U2 K- ?
! c5 o+ y7 S) X0 f* f3 b
set-plot-x-range 0 xmax
8 z8 |0 h8 G2 m5 D& |
/ x% c! f7 P1 B$ _1 @" v
set-plot-y-range 0.0 ymax

# L8 K' W4 u6 \0 b5 C  O- t) E2 K4 D& vend" K/ |8 D% j) g$ h7 }1 ]# S! A. Q, a
! o' M) A7 N( o2 v2 f
to setup-plot2" z3 s7 j1 b0 L! z9 j' Y
& _5 I7 B! z! t0 r7 F; a
set-current-plot "Trends-of-global-reputation"
5 `6 r/ v- M, c1 t9 q9 R  ^' O4 i
3 C# C5 }/ a: @! g
set-plot-x-range 0 xmax

3 j, e- n+ Y6 c% H; {! `0 K4 z1 D- v- x: e% i% e: B, X" D4 V  H2 D
set-plot-y-range 0.0 ymax
6 R! U  u* b6 K( C7 ?' Z, ]
end% b$ N* H  i; i* j* j$ J3 M% _: K: j
/ i; s2 P8 A' C2 t) x2 r! i
to setup-plot30 s" [6 I: c3 a
7 \8 h: L6 [/ l' a+ I
set-current-plot "Trends-of-credibility"

/ v1 D) @5 @9 B4 M! j( j; F9 j! `5 D" j0 h
set-plot-x-range 0 xmax
2 c  S4 A- m8 B8 Y9 ~/ [! d

  a3 R$ d4 d- @+ g2 h0 vset-plot-y-range 0.0 ymax

. z4 X( E3 g' ?' iend
9 F; `6 q6 b% E
( R8 W: }! I8 [& T. B: v  a" cto do-plots
8 U' ]7 I/ I3 }9 R' r! R4 zset-current-plot "Trends-of-Local-reputation"' R) @% _  p* `7 ~
set-current-plot-pen "Honest service"
- _, w  F6 r/ @# Dend" b: [3 {3 M/ V( R: Y# [9 D
' P/ l9 ]9 Q" w; j; q# W* l5 v! k# `- E
[ 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.
+ e2 t: |1 ~, v6 y
' W, s+ x# E+ E  J7 B6 \7 u. w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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