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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:
: c+ ~8 B+ P/ a0 P; ^8 q! l1 S% `to do-business ' Z! O4 K2 h! l. S$ c6 F
rt random 360# m8 [: G, ^, p# w, b# O6 z5 C
fd 1
1 i( x5 W, P- d# ? ifelse(other turtles-here != nobody)[( c& j  U0 r4 c0 V" `* ?
   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.
8 M: j. B* o* O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 [& y( y8 z# ^  [3 p2 Q2 B- M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 c0 [  x+ _$ p& A* B; r   set [trade-record-one-len] of self length [trade-record-one] of self5 |0 G5 @) G8 l1 Y2 k6 J6 E
   set trade-record-current( list (timer) (random money-upper-limit))
( G& l2 ]1 f) o8 s2 [8 N! h& A
, I6 c0 k, V. }5 R& s问题的提示如下:, W& `9 Q' p' Q+ @  M' r. W: Z0 J* n
  i* E+ b; I# `0 |$ S
error while turtle 50 running OF in procedure DO-BUSINESS
% @& S3 l2 y; B) H  called by procedure GO
0 f0 X8 R7 d5 |* G$ o2 Y( EOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 K4 R! K% B" o
(halted running of go)
+ e/ P& u+ i5 `/ ]# X8 k8 l0 T) x& Y  `) I; b: p! t: 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~~" Y$ e/ V( {6 q9 K& }+ B; t
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1 W& z; M% s4 B
globals[
3 I: Z  _" |  r2 W/ a, Exmax
) u0 o, n. n0 a6 J0 _+ @ymax5 T  i+ M6 _$ d7 ?# Z+ m9 o' @. {
global-reputation-list! j2 r2 H1 \( [

5 ]/ W4 f2 S  _0 t" T;;
每一个turtle的全局声誉都存在此LIST# x2 H, a% k9 |5 A6 @+ f
credibility-list
% j* \9 y; o9 T- S$ j( n9 M: f;;
每一个turtle的评价可信度6 }4 N2 W# d3 d
honest-service
$ `- M$ J' K. A; T% D  I% L  Funhonest-service
  R4 B4 _/ P& W# hoscillation( Y5 ]( ^5 `3 J5 G2 W1 }" m  B
rand-dynamic
% `( S: e, [9 |1 }; M- F" R]+ a. S6 C, K" }/ k
% \6 _, F3 X: g$ X
turtles-own[  G' L, E5 A3 \) }+ k0 q* b
trade-record-all
" y7 p4 U! K$ Z; l2 d7 t;;a list of lists,
trade-record-one组成, v" O  U# |- g) d. E" y, |# Q4 W
trade-record-one) v7 {. Z4 t& n, h6 x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' w# e/ T# ]1 D5 i- @, W2 l
5 q4 O) O; g4 ]* g
;;[
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]]* b0 r0 D5 g! t2 R" [/ v# [5 i1 a
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]  K( @" Y  h/ x7 n6 Z) l+ m* N
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
' M8 h' N7 S7 ?6 R& ]' c3 ]1 Zneighbor-total
1 A8 K: t3 G% j3 Y;;
记录该turtle的邻居节点的数目2 L7 p8 U+ f; {
trade-time
7 G% B/ W8 k5 S! ]- E  L;;
当前发生交易的turtle的交易时间$ l5 t7 [, e6 Q- A2 _8 t0 k
appraise-give
( b+ |- c' @( i8 W/ h& \3 f: {;;
当前发生交易时给出的评价
( q4 m0 N9 p$ L" wappraise-receive; Z) z7 c$ y4 L( n5 Q
;;
当前发生交易时收到的评价
9 C+ w1 J) e& Gappraise-time
8 p7 }7 J* f1 k' d3 b6 J6 y;;
当前发生交易时的评价时间( A* g) U. t8 k! D+ I/ l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  t3 |$ ^* G( Q
trade-times-total+ x- m4 o$ O2 ?- J
;;
与当前turtle的交易总次数
9 c# T! q# D* [6 {! Q6 jtrade-money-total
, w6 [0 t; Z( D  h# X;;
与当前turtle的交易总金额
# X% i4 u0 k( Nlocal-reputation4 Y5 x- v" F' g& R
global-reputation7 G  f! _- c; W& f; T/ I) ~0 c
credibility+ G/ `; ^% [5 P# u
;;
评价可信度,每次交易后都需要更新0 D9 ?$ t  S8 i$ A6 g. Y! z
credibility-all0 Q; u$ W' X4 F) K' ^+ V
;;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  F- F% @- t: @" w% ]) R
) X8 K/ D4 d7 y1 Q! [& P( X
;;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
3 s1 J% ^4 n( ]. A1 L, f# q4 K( Z1 \credibility-one1 `+ E! A  O% X4 ?5 y5 u- S4 n% \
;;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
% c! x+ U* F4 F* e3 t6 x2 d5 Lglobal-proportion
3 D" p+ ~$ i- w, ^* O: z. v) Bcustomer
* }: g  J+ V. P' P; S) Ocustomer-no! A5 _' ]( g9 S3 x8 l' D
trust-ok
% V1 `5 `$ Y; W- H: q+ Otrade-record-one-len;;trade-record-one的长度9 z+ L- |( O- ~# q% T
]$ P1 o2 V. U( I+ o4 [/ m, ]
7 @9 o: |1 W  h. Y0 Y, d4 v; H& e% z
;;setup procedure) U3 K  _* O8 C; ^4 B7 V2 [
* V/ Q# K6 w) M1 O
to setup5 I" {# o1 Z5 n/ v" b. Q" `" r

; f, }- R3 O- g; q% s) ?! Tca
7 g. M* a2 E2 |

: [8 |1 O. r8 z0 I  G( O- D. B7 rinitialize-settings

$ d# S2 C9 p+ J/ |1 ^3 O! i* Z2 s7 n. X: s$ p
crt people [setup-turtles]
1 P1 _8 E  s" S$ `
* F4 U0 ^! `6 P4 r* ^* @7 g: c' V
reset-timer

0 l9 |7 Q) c- u( P  b5 X2 I( P# m5 q( I3 [
0 U$ e8 f- t' \1 [6 `poll-class

1 V' g8 p' c# l! x  `+ u+ x" K0 g7 H* z$ b6 k
setup-plots

) I) w. |1 n# K" ?. P( A
6 ?* k1 o+ m8 p+ ndo-plots

' }6 x. _2 d  q& T  P* Qend
5 C; ]* h5 }# a* R# T( _% y
8 d& F# {% u5 e+ _to initialize-settings. J8 E8 D6 l- m7 q4 D! w' G

! u8 ~$ f+ f- [  Fset global-reputation-list []
- ]  a) ~  w" I) S2 ^9 J# y

- [: W+ M' E+ o$ m! jset credibility-list n-values people [0.5]

* F% T) U+ l( Y! ]" v* e
# q, H9 q  `/ {1 O0 F1 _1 Mset honest-service 0
! }  n8 _' C/ Y9 W4 F* t. d3 z: r. g
3 E( l& ]) V  N$ G: w8 h
set unhonest-service 0
; T0 d6 h, a9 S  }/ f+ ~; G

/ |6 o6 G6 d8 W, x( C- i; F$ zset oscillation 0
. D/ [/ @# Y" q- }7 a: S. Y) B

6 i, |' C. y+ @  V$ j, U& ]3 |set rand-dynamic 0
% s1 F* n9 X. Q( j+ R
end! Z; e# E# D; T% B' r; m8 \1 X
/ G9 ^2 d  @! A, w. O' o, I
to setup-turtles % q6 S5 E! U! n" _' o9 Y
set shape "person"
$ E" @5 J( X! s$ ^setxy random-xcor random-ycor, E  L4 G1 n$ P0 c( c
set trade-record-one []
" C# r4 p0 w2 d# I  S+ e
3 \& G( u; |4 N- @2 }" o# B
set trade-record-all n-values people [(list (? + 1) 0 0)] ! q1 o0 F- ^. _: z( l" ^

; I* N, p  N) [2 Dset trade-record-current []8 v3 m7 g4 I+ `/ z* j/ a0 c. ~
set credibility-receive []6 _6 B" B0 \. l$ N& F
set local-reputation 0.5
9 b3 t' E4 O9 q5 [# K! f1 W( Sset neighbor-total 08 z5 f; _" A; [# Z- l* j
set trade-times-total 00 T2 @  p9 S. ?0 k6 j) V0 K+ j
set trade-money-total 01 M8 {" q* g# Y+ g4 H0 G
set customer nobody8 L+ G  U) n& a  P
set credibility-all n-values people [creat-credibility]7 y9 n) Q* e9 b% Y: U" c
set credibility n-values people [-1]
3 [4 ^+ a$ q' v0 k( m5 ~get-color5 U; C. C+ F3 Q$ k: f9 O+ d

' o/ e  c' e3 D1 x1 o1 ]3 U) hend
# Q6 }/ h/ x  \) ^0 l& G9 N/ X  K* w! D! h, }
to-report creat-credibility
& U4 w  ~) N  v8 _" Treport n-values people [0.5]
9 W, m8 W: h) L4 n# ?4 Nend+ \6 ~8 q1 Q' i! i# R
- [8 {4 Q8 @. _- y
to setup-plots
5 L& |& d7 W" [3 |, Z; @5 v3 s: l  R) ~" s0 O! h; ?6 l& R6 S
set xmax 30

. J1 k4 z" b8 W  G8 |
2 Q/ u. C& f. h9 q* v" S# \0 Nset ymax 1.0
" Y5 D$ w( d4 D1 r) ~
0 a, U" K! t1 h* T- m
clear-all-plots

, P( _5 m3 W( M+ N; m; V
6 E5 G* S8 e9 F$ t3 gsetup-plot1
$ E/ g, [9 e& e+ @( \! q  W9 @
) w+ ], x7 ?3 [& |0 e
setup-plot2

/ x8 `, T( a, I3 Z3 F/ V' j0 t- O) M5 u- O' R) Y4 z
setup-plot3

6 F1 k3 {- J" ]/ o: z0 Zend' n* Z' u6 b' [& |( m
: [+ ~2 r* W( ]5 K  w7 w
;;run time procedures% ^1 ^2 M+ ]* ]! w% l$ [: i
4 X/ y) s' b6 Q5 `& F% l
to go
) o# ^2 x, V/ @
/ _. g% Z8 P. V) oask turtles [do-business]
0 s! W0 ]1 ]* u
end/ q/ s9 a: x* u" P2 l6 O
/ V& {6 D# G0 S6 l3 L
to do-business
- ~) i0 ~8 k& u3 e7 e& O0 Q3 X
8 H( R( F. n0 C  l6 f

1 }8 _# n4 J, j. V7 e# Rrt random 360

2 E, r* t1 V1 F7 @0 c) h' s- R2 Q% Y! b/ v& }) Y
fd 1

8 a# x1 z5 F+ U1 Y- {" C
* m8 Z  e; M0 ^3 cifelse(other turtles-here != nobody)[
' o) s3 V; v' L4 T( x: [# c

# H' _. w  L( G% V$ Tset customer one-of other turtles-here

/ q9 V* }( k$ A  W: \7 v/ H/ ?- c( l
;; set [customer] of customer myself

5 c3 \* {" C8 f5 E* v
) _5 D: f3 h7 }1 x  s1 J3 Bset [trade-record-one] of self item (([who] of customer) - 1), |& e+ a1 g, s. @9 z
[trade-record-all]of self
: U3 G5 @6 F/ G7 Y) A& Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% d# u/ I, _1 [0 r* R5 k1 H5 e7 u4 F& r  ]( h$ y
set [trade-record-one] of customer item (([who] of self) - 1)4 t! D! Q$ p7 F- w* i
[trade-record-all]of customer

6 i; Q! R  B; K( p$ t1 {) ]+ k) q
set [trade-record-one-len] of self length [trade-record-one] of self
$ d# x! G# w$ J7 Z/ `

$ ]& `  m" {. n9 e* S$ [" w( yset trade-record-current( list (timer) (random money-upper-limit))
# u. [$ n& |/ g7 D3 m3 P
5 p: _8 A3 w% f1 \+ H; d3 [
ask self [do-trust]
6 Z3 p& v7 H8 w3 O) f: z;;
先求ij的信任度
5 U( ~6 z2 A' ?: e
  h( ^+ v9 t, t2 x+ `+ Vif ([trust-ok] of self)
$ u5 p5 P& \1 w2 O3 j;;
根据ij的信任度来决定是否与j进行交易[
$ X4 c& S: w( S) Y- Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 h; |* J, e* ~
+ R- u" s) ?9 i* Q2 F  k( V[

' j6 E( s$ I/ m  n4 P2 H6 h3 @4 p) p. P# L) v& v
do-trade
: F6 l% l4 m( g, d! j5 i& |3 h& `
/ _! l+ }1 P; q! R" i. X
update-credibility-ijl
4 |# Z# j* d, W$ e4 |0 [; P+ B  c  S

! W7 N  D) H; mupdate-credibility-list
6 e& d# v0 Z4 p1 a2 m& D) Q
8 m1 q  \0 L4 ?2 u2 h8 ?

3 T  l& K+ y7 k1 T9 g! gupdate-global-reputation-list

8 j& q& V: t# ]! {7 x9 h0 w- o' x5 M, a
poll-class

& n% z! e! G' m* N1 g# t
9 c4 ^* n! [! M/ J/ t3 P8 Eget-color
* e' C) u* Y; ^# h* `+ {- x

, b* ]' z6 d' [% V4 k/ m# R% `]]
1 h: r0 x+ g0 ]$ T! K
! n, t7 u& U0 h;;
如果所得的信任度满足条件,则进行交易# o# f* u' r5 H3 p# I* v. g
7 O2 m* q3 J! ]; g, A
[

) |5 s) W# I( Z: q) f* k6 N0 z! F8 }3 a3 ^
rt random 360

6 x: q0 v! R+ w. l% i/ m, K' L3 z  B
fd 1

: @0 B" \+ ~# D0 k- u7 n4 Z: V" G$ w* S
]
" R( T3 M" i% Y1 ~( {) w

/ E, B* r6 V& {* Z6 _9 `end
5 [* U: q! ]. I0 L" f

, j7 k2 n2 n% S. N4 w# }( ^- |) l8 Uto do-trust
, m( W5 U1 e6 H1 ?, Q1 F: N8 Dset trust-ok False
$ N0 z2 J: G; G/ g- S9 y$ {, Q) e5 \. _$ E' @) }) D

! c8 q" v8 d4 _  Olet max-trade-times 0& K. m, I$ ^( x3 b. ]' J* b6 Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. X. ]# U# X! E# s: m$ t- n! A
let max-trade-money 0
6 }6 A* `! C' H/ x% J/ vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 e) S% R7 r  [! 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))) s. a3 }+ ]8 O% O/ S( c# r9 E1 B

' f; m& i' r% ]% d& S9 q7 o
) @! ^$ h- V5 N. M; k/ f. M
get-global-proportion& ?- p1 p( ~8 ^* Y/ U  K$ Q
let trust-value
1 n2 E! X+ e% B% O/ }+ P  Y3 Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ l7 Q% K( \! W( k" [
if(trust-value > trade-trust-value)9 b8 O5 b. q4 l
[set trust-ok true]
# W8 r' O% A6 \( b$ Tend" a- b' U; L, }' C8 @  g

/ y) J4 h+ o1 `; m% W' \0 Eto get-global-proportion
' B2 @. N7 H$ F* `- o4 G+ Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. a& ~! S( L. U8 {[set global-proportion 0]/ }* D, |: `7 Z3 A
[let i 0
4 W6 R2 l* R9 M2 Y# I* U* ^let sum-money 0
, l; i) O* P% h! t% U( t5 Twhile[ i < people]3 q, t# J: u1 x, {* Y
[
6 X5 C2 T. i1 O& D. u' hif( length (item i
' m/ `: \4 |. ^. }& _) {7 ~, m[trade-record-all] of customer) > 3 )

# _5 _+ [- ^3 R$ |[& J# v# S2 e: ~+ ~8 q2 K# F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" k; m2 K: q5 ]* `5 P$ A$ m
]* b0 n" @& A9 E' Q; d
]4 R& Q( ^# @* d( Y6 g4 y
let j 01 ]6 S# N! D- @/ |
let note 04 [+ m4 Y% C* k6 _) ?
while[ j < people]
. w- h% P0 g1 s[6 P9 ^4 y0 o% v7 s5 r- Z% F* D% r
if( length (item i
9 `: e6 o+ ]/ @6 X1 A! Z[trade-record-all] of customer) > 3 )
- r' h# W7 n/ K- M7 S
[! T! _- a. `$ A. ^$ W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 _1 c" ^  V3 e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. r" Q; M0 ^# l3 _# S  y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ X# e7 s+ a4 |+ v0 d% g]
! u3 R* a: _) H" s* v( I]2 ]3 R. N% G2 u; k" D/ X
set global-proportion note- l3 p) O: K( Q4 y: I8 X
]
! a6 H3 m  P8 z9 tend
/ c8 X* R% j" W1 M* G- f  v# \9 r! x7 b6 r& ?% L( G
to do-trade, u& L. I) a$ C2 o% P1 x( ^
;;
这个过程实际上是给双方作出评价的过程5 g: }+ U5 `- s' |1 b3 U, r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' W8 M( l* O' Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! s  S! R- a2 I. I+ l7 B
set trade-record-current lput(timer) trade-record-current
" {; H+ J( [6 H  B0 b2 Y  X;;
评价时间* v+ }/ X; e/ @7 U1 C
ask myself [. l9 O- i" H, k5 g- d' h
update-local-reputation
  K+ [8 B% m" Gset trade-record-current lput([local-reputation] of myself) trade-record-current
5 K- S' [0 L' W5 r' |2 f3 C]
6 T: D& P) C" }  D1 b& H- Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; i. A. Q; e& V" B3 ^;;
将此次交易的记录加入到trade-record-one
- P, {9 _! L) \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ P9 k! _; D  h' b9 l, Ilet note (item 2 trade-record-current )
. R7 q3 t/ W9 ^& [6 v* X5 \set trade-record-current5 j" ]% V- K2 M( |7 z
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 I: F+ K5 F  L; F& Z+ Oset trade-record-current
0 b/ c' |/ }& q! T! D+ K  d2 A(replace-item 3 trade-record-current note): u$ J/ E- M7 C0 W% X4 y
, j6 [( Y! O2 {% R5 }& u  x

$ h8 F2 ]: X% e5 A6 _$ ]/ g1 Uask customer [/ I8 S4 i5 X( Q! L
update-local-reputation5 F5 u9 ^) G+ I0 S
set trade-record-current
" f' F2 O* R* ^7 D8 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ X9 |: h, V. m) k- n
]: S& r; K- \* ~1 H
7 P6 x6 a( K+ h7 @9 S2 [$ R

  ?9 H+ X. l5 t- e1 Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! T% d4 j0 _& Z1 r, ?5 M
  ?8 \* Q0 d, ]' _9 x0 [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 x1 ^+ z4 K- v- ], ?: [
;;
将此次交易的记录加入到customertrade-record-all
: a$ c8 w& {- yend. e" a8 Y! n% m5 B  M$ _6 m7 i

  c. z0 n1 d8 E$ v. tto update-local-reputation- e7 _; C, x( N6 J
set [trade-record-one-len] of myself length [trade-record-one] of myself# }% ]7 E" `5 y: s0 [

9 {, u2 ^; _* U. |# J
' X8 A( L" X# G* R2 f3 Z;;if [trade-record-one-len] of myself > 3

& l) n. @, D/ N; v8 h" hupdate-neighbor-total
5 T" t1 D* Q5 J2 ]: O: S;;
更新邻居节点的数目,在此进行6 W" S: u5 Z* V6 [( a
let i 3
' V, J& p6 i" L( ylet sum-time 0
* A& r+ y+ M. C! ^4 l* Iwhile[i < [trade-record-one-len] of myself]
2 ~4 }/ n. O2 H- K, B[" n: N: i) E" a) X6 [" P) w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) m3 i  m5 Y- M
set i" x' M5 I! W6 l0 ?" p# x
( i + 1)

! m3 ]  ~1 G# _' W0 N: |  x]4 Y- n1 c8 p) \+ G$ t
let j 3% a5 e! W8 U# G! D) M! I! _
let sum-money 0
3 z3 b$ W+ S6 |; x; ~while[j < [trade-record-one-len] of myself]
% N  o) Z; X3 j& ~5 @, W[
- ?' k" R) p5 ~* x0 M6 iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 @9 ^- X' Z! U2 `, T
set j9 Y* I& {" N" A, v% I+ K
( j + 1)
9 `1 Q; G3 g! l, ]7 t
]
% Q  {% Y* f5 r0 e+ D4 [& ^7 i0 Ilet k 3# P, p2 r+ _, `3 c' O# a0 N
let power 0/ C* G0 H0 u+ M0 c3 P
let local 0
1 [# l! f2 \: _! m/ [& y) cwhile [k <[trade-record-one-len] of myself]
" a4 b* _7 `. n0 U[3 t3 B& N3 g  M
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)
: f( m! W7 g' u; \5 Dset k (k + 1)5 x" C! M1 {- b% M9 s' l: V
]
6 H% E6 D' ?' y7 ]- ]) [set [local-reputation] of myself (local)( }" Z7 P7 q# [! N. ?
end$ x( W; }% y6 F3 f
" p) e5 c2 r$ k* b# }* X8 r
to update-neighbor-total
  \. m! K. U) P  Z
3 Y, ~3 q* |* `6 D2 p  J- ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 w) O/ q+ l0 q) }0 [2 N! ^% v; h' D  H1 W& P

6 |6 V8 i2 r. R, @' Kend
, x! z% _4 ?% q7 r5 n
; \4 s5 b) W( g& Cto update-credibility-ijl 3 \+ O0 Q  T# U" U; t: W

0 c0 n# p) ^, O;;
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。
" K( g" S1 G; ?0 Nlet l 0; d( j! c: l6 y7 m( \: i8 |. }, l
while[ l < people ]
1 c: \' M6 M: 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+ k% \% i, {; E( P3 L% I4 x
[
  P3 j; l$ `# m! ]# ]4 Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 u  _$ u1 |& G. e& G3 g* W% \
if (trade-record-one-j-l-len > 3)
; h4 S+ |6 r  |8 g. U; F' 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-one
& V7 Q# _1 {" j" o" j0 X( olet i 3& k4 Z+ Z8 v( c
let sum-time 0' T" n- z& n& s' P
while[i < trade-record-one-len]& G! Y( O7 z5 k0 Z
[3 [- w0 ^. v7 T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% d/ |9 ~5 ?  M
set i
3 j; J. d5 Q0 U# O' c+ Z, P9 p. \( i + 1)
: q, L! ^7 {* T  o! i
]% I/ [8 _( s$ a4 h9 r8 ?
let credibility-i-j-l 0+ L; f1 c! j+ \3 v
;;i
评价(jjl的评价)
& q% r6 _5 \( |. ~let j 3
; u7 U2 \$ |$ H2 h2 Ylet k 4
7 Q# Q6 D: v8 T& wwhile[j < trade-record-one-len]
6 X  W3 i$ h* F% n1 I[
# w/ x* C+ O0 @$ K% Uwhile [((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+ F9 t( A( O  v) O1 n7 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)& R" w8 z9 o' t7 D: @
set j7 z6 X- i( A0 H" ]
( j + 1)
" ^# G# H( x' s# I! z  O. O; F. {* ^
]+ Q8 L9 e5 n0 O) ^: K
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 ))6 u; E6 e1 B7 [% d# w) R
3 Q0 L' l0 Q* ?6 W+ s

* k* S% b* b; J+ \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 S3 ?' X8 l* }% M/ M* D0 n
;;
及时更新il的评价质量的评价
- z8 m# N8 ^: Z5 p: H( jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# q2 r* F7 |# yset l (l + 1)* b  |: g& @% J. L" b: y
]& g, n+ m/ s6 g& E: u
end# h3 Z4 s& L$ e

4 o% n8 Z( y5 f% o9 Eto update-credibility-list% [  S2 |) P+ Z4 f0 }
let i 0
& \5 E# n& b; C0 S  V; T8 ywhile[i < people]
0 v1 V( [9 R) }* h) }[8 g2 y/ t3 r$ W/ ]! S
let j 0
6 `$ |" _1 y! L! |" Clet note 0
- a" H( ?) U+ L. J  K, f) ]let k 0
* q$ X5 H1 ]; h0 V4 [;;
计作出过评价的邻居节点的数目6 R) z5 b- \/ t8 Y, R, ?9 c* |
while[j < people]
7 O4 ?( G! L' N( _[
% w. C( U! |2 {8 F# d6 F2 w2 ?% Fif (item j( [credibility] of turtle (i + 1)) != -1); E9 A9 X5 \$ V, R3 r
;;
判断是否给本turtle的评价质量做出过评价的节点
! N2 q9 H- Q, K6 c: V( \1 H9 Q) U[set note (note + item j ([credibility]of turtle (i + 1)))
$ l5 H& D2 ]; t;;*(exp (-(people - 2)))/(people - 2))]
$ G- z# k7 ?3 t1 A
set k (k + 1)
3 A4 N3 l1 x9 C9 b& o]8 v- a, ]) [; r. ^; R2 Z
set j (j + 1)  e$ T- J: a  T: i$ `
]
/ K% U  E# u/ j; W3 }set note (note *(exp (- (1 / k)))/ k)$ t( }! ~3 J' |& Q; _
set credibility-list (replace-item i credibility-list note)
, L1 j$ O5 w: i$ R9 T$ ^" ]' [- eset i (i + 1)
) f' ?) L* _7 J& D7 r! }3 n]
1 ~- C( s9 X# A- |6 w2 ^end( X2 {7 ]' n# w1 V( k

- K4 k5 K3 l  s* w: i; }# tto update-global-reputation-list% c' R" G+ \0 i+ x
let j 0
. F6 u( a( T7 Y, `& @$ x# K* \while[j < people]
8 Z1 _3 _, ?( M9 {[+ e1 V7 J( v5 A2 q. j0 Q
let new 0" v4 U( u/ l0 P4 B  S  {
;;
暂存新的一个全局声誉
/ v8 v6 \  w. \let i 0; x% M( l6 j# S
let sum-money 05 T) w' y: t, ^) H5 v0 M
let credibility-money 0/ _! k. C3 D* x1 F: Q5 j1 M
while [i < people]
7 I6 Y8 r6 E1 w1 \0 F& O) M[
" `+ e. E/ J3 S, z8 Y/ kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! s: H$ M9 c  S" T) P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- }. ^* u( X5 Y! vset i (i + 1)
1 ~. k- g; i3 x( a. C  `]  a3 X0 ]0 m9 Z" L
let k 0
7 K4 P. ]3 |) E! v3 jlet new1 0  r4 I/ C9 P$ o' l- i( H5 X
while [k < people]
5 o& M2 a( |" I: C3 P% F  Z+ A[
( g' b1 q( G) {7 `/ C/ H4 `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)8 F. c% F* t! u8 e
set k (k + 1)  e1 H' ^3 @( o3 }
]  b  N0 P8 V8 m) P; R$ U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& I$ `5 Z1 n+ W- R% c8 xset global-reputation-list (replace-item j global-reputation-list new)
% F, m  W5 W$ E0 v' s1 I% z1 Eset j (j + 1)
% g' L0 E4 X7 ]4 {% P0 I- S]
6 J4 c7 B9 ^  I& I/ Pend+ F& p2 `8 Y; \6 k

1 f5 v. O* c$ }. V! r. [8 O0 D) Y( r6 G& G' t( K: I
$ @: q4 ~% P$ p7 t/ l/ [$ C
to get-color
6 q- N" m% c- d& B" v" c
0 G% p- e5 H' x! gset color blue

  k) A2 u. K6 ^1 A% [. }& pend# J) Z8 k" k  g8 |: I& [

; u  {" d6 E0 Y+ [7 e& ito poll-class
! t( i* N/ W1 Uend
4 [! u0 b  E4 {$ U' S
* Y" x/ p: |" N/ mto setup-plot1& Z" h  D1 U' i: w7 H1 |* t
8 ?' X$ I) V* S6 a
set-current-plot "Trends-of-Local-reputation"
6 {, H5 S  ?9 s/ t, O
# S4 M* r8 t1 s' Y
set-plot-x-range 0 xmax

9 H% o: Q( \! Q  z4 I' N( [
. x7 I/ Q! o9 [$ V& iset-plot-y-range 0.0 ymax
# h5 U0 B% p2 y* i( J
end
. x+ S, }9 r+ G- R3 X& o0 D
, ^; b* V0 G  e, @% ?& A) Fto setup-plot2
/ q4 {7 `  L3 ^% O* r) W4 [/ E2 F: E+ n' t1 e! m
set-current-plot "Trends-of-global-reputation"
' {2 u: [/ d' H6 a7 l! {
8 r, C  _- I$ y8 M# t9 L! I
set-plot-x-range 0 xmax
7 I1 }& {+ I' s9 B
2 ?8 g1 }; x7 X# h1 K
set-plot-y-range 0.0 ymax

3 R6 j4 o8 E! l8 W& a" w4 @end0 X6 }- ^! h5 b3 H) W# p: U6 K# u
% s5 t# e' Q* @# p/ L. R
to setup-plot37 v3 [0 n% t' h- J# h
# t+ v2 Z( X2 }  P" ~+ y" Z, J$ m
set-current-plot "Trends-of-credibility"

, P$ m# k- r: N6 \8 t( N* f7 d/ b  f
9 e, e7 i& b9 H3 `" U! ]: H( ]" Yset-plot-x-range 0 xmax
$ Z$ ~4 W2 ^9 {/ j$ K% |
7 R7 u" b$ n2 \) o# [
set-plot-y-range 0.0 ymax
" k2 Q0 F. r8 `! C: R' ~
end
3 c, [* j$ n8 H* _# z
7 u# _; {* E, |( N# s, t: Xto do-plots# l5 ?3 Z5 v; W
set-current-plot "Trends-of-Local-reputation"
; S$ {# }" s4 Cset-current-plot-pen "Honest service"
# R: u& U1 p2 Oend
* b( i2 o  q- k' _9 \3 v7 Y: O* U
[ 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./ ~8 S4 W& c/ K8 s, T2 r
9 H9 b9 L2 I2 R+ t" 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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