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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:- i! z/ }# m/ {0 ?1 W
to do-business 7 i% O4 M) p8 w4 G  ^
rt random 360' G; Q9 h' V2 k$ P2 m9 T6 [5 ?. m, L) O
fd 1
) _7 d: {' f9 I% _ ifelse(other turtles-here != nobody)[4 M2 G8 i7 i2 `# I# }
   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.
1 l8 ?( a7 ]3 e9 q0 u; a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 ^8 ~4 M3 h! f* @; p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 s2 a' e) y2 N: i! T, j) a: o
   set [trade-record-one-len] of self length [trade-record-one] of self7 k3 U3 i) K$ C9 T
   set trade-record-current( list (timer) (random money-upper-limit))
, b. L; ?; _* I: N1 n9 a, U4 ^1 V! @- V6 P, u5 r# m- z- S
问题的提示如下:3 c5 }$ u$ P. c. r' [
; M8 V! v( ^, m, {
error while turtle 50 running OF in procedure DO-BUSINESS( {; B' j# _, J$ h) f: H
  called by procedure GO3 @, w# ]% B* T+ v) t( v6 n% ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 F$ v5 p' D9 n0 O. O# f8 h8 w3 |" e
(halted running of go)  y/ _; b0 n6 e( E% w. P

% [, c% x5 {6 x, F4 {9 Q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~~
2 U5 \- \! I+ w; F! J5 f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
' B0 n) r- g) t# r0 C1 jglobals[+ g; ^0 o9 w  p8 }
xmax! D! ]9 }) Z! X5 `) T8 p8 q' S) P
ymax7 R' H6 v1 K" @8 Y3 V
global-reputation-list
% B1 c% d+ y5 A& M, Q7 _6 X3 ~  J3 Y6 b) v4 H4 W6 _
;;
每一个turtle的全局声誉都存在此LIST
& B  M) m9 H. F1 a) b, ]5 Q; Z7 bcredibility-list4 K/ U* I1 S4 x; _
;;
每一个turtle的评价可信度
9 R! Q7 }5 t/ }$ a- b: q9 i) c* uhonest-service1 q) K+ v$ @; s) R- z
unhonest-service9 v% d7 g+ R6 M' w- I+ O% w! p
oscillation
' `6 G& l% }( U5 nrand-dynamic6 m1 _/ B7 Z$ Y
]6 F. v" X1 g& H
/ q: I6 y0 L& g3 F$ u
turtles-own[& v$ {/ B9 ?4 U2 _( M
trade-record-all
2 w0 p& p7 e6 Q4 t% D;;a list of lists,
trade-record-one组成- c" ]# J  L: Q6 A
trade-record-one1 H+ z* \/ {( x+ p# a9 I4 E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* D- i; x5 f. W

( c5 W% h, p# t3 }. y;;[
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]]) {9 |9 x, r9 k9 S
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]
1 R8 `& `% @, u; Lcredibility-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
4 Y. ~8 ]; `  Z. d# N. A8 A0 [' Hneighbor-total
# S& z: S6 K( M/ c) c;;
记录该turtle的邻居节点的数目) l; s+ H4 J- t1 B! U
trade-time7 A4 y" v5 A: \: I0 D) [1 ]3 T- v
;;
当前发生交易的turtle的交易时间& R" S! D* t) u0 B7 W/ t  d
appraise-give
' P% a2 G0 I( r;;
当前发生交易时给出的评价9 R2 R' _; Z. v7 j1 [/ d1 G" J
appraise-receive
7 R6 X: N3 M$ Z;;
当前发生交易时收到的评价
5 X, k! t) s3 ^appraise-time
% T! T7 R4 m4 k* d! }$ k+ G;;
当前发生交易时的评价时间
4 N8 s+ g3 E) S$ r6 O2 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& Y. v4 i" e$ D& O! b, S5 ptrade-times-total: m; }  C: \1 i  @) E' w
;;
与当前turtle的交易总次数
7 Q. R$ A) [" Z5 v! Jtrade-money-total" m5 b0 V7 T/ E5 {. r2 c6 u5 A
;;
与当前turtle的交易总金额9 @$ }3 n" u1 C3 L% c# @
local-reputation
! p( D& o. h6 v1 z! ~) d: s5 @global-reputation# p) B  H" y# Z6 E* K
credibility
- x( a9 I) D! r: A;;
评价可信度,每次交易后都需要更新
: m+ `7 c) `4 i( y' H$ @credibility-all
0 [! H- P& Q" v( y;;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
4 u  B4 G" m7 g) @- N6 R  w4 M7 C' ~' s* s
;;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' B. }6 k. v1 f) Z, G$ L8 r- m
credibility-one
4 j) a" F) M8 w1 d;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people* i! M9 J& r% m+ {% w4 R
global-proportion0 d% \% f& h( V5 I; ~9 X7 b0 \6 U
customer
1 ~& B/ B( e- Vcustomer-no
' F* W" H( x2 y2 I" l5 U8 o( I1 M* Otrust-ok
1 Z4 K9 @+ S) h: Ctrade-record-one-len;;trade-record-one的长度
; B" L, `& S2 _6 c# t: ?]. S  `. D$ n' Y6 y

6 E5 r+ I* w: g+ \) ~% ];;setup procedure
" s- {) q2 X6 m  a' [/ f1 ]- X& W, b# l' m# ~
to setup, B. Y* h5 M+ r7 Y8 Y
2 u, Y* Q7 ~' W* w: |
ca
) I, h* Z9 m% f& b2 Q
. ]; K( l$ A! Z+ d
initialize-settings

( ~8 F( f9 b( {; H' B/ y- [2 `- u9 @# P# i/ U& R7 t. |
crt people [setup-turtles]
& K! \6 u4 N3 y
5 ^  r0 G6 h9 c1 a3 i) Y8 L
reset-timer
4 d# [( P+ z/ a2 R  a" A3 u

) _) T! [) U; B/ b# Kpoll-class
6 i, b3 ]5 X# w" o. ~5 T
& n) f7 ?7 l% t1 h: q6 M
setup-plots
0 x- S* {# T. I) i6 {8 i3 y

" N6 A7 s6 o) T1 B( W7 tdo-plots

6 ]* J4 R* e) e, Aend
. W0 ~% r& y8 s, ]. ]. v
  H( Y+ J/ R* w  K6 zto initialize-settings+ s1 ~* A1 a: f- ?9 Q7 a5 g* a
. |3 q+ a1 m/ }! h5 J4 q
set global-reputation-list []
/ V( m& `0 e" w8 K; J9 W/ U
* `, |$ @$ Y. ]& l* T& h
set credibility-list n-values people [0.5]

# U- d! J2 {5 T* ^$ l
3 z) L0 Z; [' r- X8 eset honest-service 0

' t! M8 m% _4 Q, b  h. `: v# f& K* C: s/ h- f9 D
set unhonest-service 0
, q/ ~9 |) E- `$ c' [* g4 T

( z) T; Q1 p/ Z, j( F8 ?- k" m: n7 V# oset oscillation 0
- ~1 `! S0 I9 E9 I
. |0 G" Q0 x  r$ y
set rand-dynamic 0
7 E. o/ @( A. Z
end
7 L* b  R- N1 g, T% P1 O
( Q5 M8 N& Q2 C. B% i/ xto setup-turtles 4 Q. K* ~9 h+ J) X& W
set shape "person"
' B7 v4 {! U4 E% M0 h1 u5 L& Osetxy random-xcor random-ycor
# d" ?: V7 Z" G% D7 |* }1 B# @+ nset trade-record-one []
5 S% E6 E+ v7 O8 _5 k6 t

; p  ^7 x# l+ X; D0 ~% y) {set trade-record-all n-values people [(list (? + 1) 0 0)] ( _1 w" d6 N' p, M
: f. d( W2 \7 p, Z
set trade-record-current []
% y: e8 ^2 h6 r! n$ G% u" Eset credibility-receive []; ~: X- h+ t2 Y0 f! j! k8 D1 T: H
set local-reputation 0.5
2 y" ~. m! l1 gset neighbor-total 03 n, J1 ^0 \# g
set trade-times-total 0
: L; k: _+ a; R. `set trade-money-total 0
7 d" x. o( F0 C9 g) t0 pset customer nobody4 M  P  C; J1 Q2 W
set credibility-all n-values people [creat-credibility]6 `0 J5 d% L1 o' w$ k; b
set credibility n-values people [-1]
& r9 }/ m5 Y$ N+ i* @, @get-color
# Z) {1 g1 _5 r
4 r$ ]" W4 y6 {
end8 Z# }- \2 F- q2 b" Q! x" i" I

: v8 C9 g9 M" w" Uto-report creat-credibility6 z3 W8 T6 @9 f% @6 `
report n-values people [0.5]  e1 o7 n4 K# r% I0 G- f, M; C& X+ q
end
1 f, P, j$ ^5 R1 G2 S6 Q7 M, j9 Z; `9 m* E6 h
to setup-plots/ ?% ~! \- z# o. r8 T( O* j2 R- O
% `; O5 ]. j, O: s$ ^2 W( i" O
set xmax 30
6 ?: R& \3 Z' h+ m0 c+ H
3 g1 N0 l& {+ Y0 u% b0 S0 @/ V: z
set ymax 1.0

1 S- x* Z; O5 [5 d7 y# B4 d) R$ i5 ^& r
clear-all-plots
- y- x3 Y$ w$ h$ m
% m/ a% c& \% B$ d" S
setup-plot1
: k  f0 F) _- I, G# P+ T+ e  S& V

/ ^" @1 \8 l* O, Lsetup-plot2

+ M) k6 y" z9 s, G2 I4 G# T3 P4 d
setup-plot3

$ O2 r- z- }7 F6 V) \+ {, v' T- yend
5 `& f' t/ a1 V! ^3 |7 M3 \; g( X) F4 u- D: w. l! R7 x
;;run time procedures9 {! i0 c0 u) c& |' t) q5 y! P
% j+ |1 q& S4 z7 t: r; ^
to go
! O/ R, O. O5 v- t6 o% \
% f% H0 h0 `/ a. G9 o8 Jask turtles [do-business]
6 n5 R2 W  ~/ M* w, e" z2 S: \
end
" Y* [; g  D$ ~6 c' J
  e9 @, q) j! r( l1 o: |to do-business
" A' U) J9 y/ s- u; j. P6 |

, |3 N) z1 q, z
) ^3 o. C+ ]- y% e; W: }, Wrt random 360

& P9 j1 D. H( F& w2 g# o# [) T: J% v
fd 1

9 Y% w9 w1 ^" `. e8 ^2 C
. i& M; d, u% U4 O$ c/ K: H. Cifelse(other turtles-here != nobody)[
7 h- J" X: A+ @! I4 ^' Q8 P

+ K- ^) v# l7 K1 ]* t5 S" tset customer one-of other turtles-here

; J( g/ _5 Z# ~
: S* k0 `6 p- G" W, f. k- j;; set [customer] of customer myself
3 n8 ^' w! }6 f0 \
& {# `" ^- ]1 W% Q/ Z) ~  s+ z
set [trade-record-one] of self item (([who] of customer) - 1)8 z1 V' H' g8 ^+ X) M) Z
[trade-record-all]of self
" j  h% ]# W. I6 y6 s. `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* q/ i4 @; |5 E5 [& ]6 u2 u6 U5 T; P" [! @# k2 D6 w
set [trade-record-one] of customer item (([who] of self) - 1)0 n5 y1 b* A+ N
[trade-record-all]of customer
8 k" I$ L8 L7 D/ h% G

- v$ |7 C- C) u! P2 _* z0 z3 Qset [trade-record-one-len] of self length [trade-record-one] of self

1 I7 ?& I+ A* N4 [3 ?
3 D; S9 H& t& T0 fset trade-record-current( list (timer) (random money-upper-limit))

( F/ m, M6 ~$ g+ w6 m
9 l9 P1 F* f! M/ M- task self [do-trust]
2 Q8 [9 a. P! V;;
先求ij的信任度. t- q4 A7 W3 O1 A

1 G2 n# ?2 F# M* O6 Hif ([trust-ok] of self)( F& C; p, Y& X, C8 T
;;
根据ij的信任度来决定是否与j进行交易[
2 U$ E1 U6 f' W9 d. xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) `# D- d8 d1 b# H
7 I7 A" s: M- y. X
[

- k/ B$ P4 K8 g
, c/ T9 Z9 ?( ^do-trade

8 M& E1 L3 Q1 ?! Z9 J# N# E/ o9 r- a; D# b( N! S5 O
update-credibility-ijl

1 O. m. w/ k& Y0 [
# _, `8 o) j/ y, D% S" L; aupdate-credibility-list
1 L% i7 j+ ^4 S+ ]5 h

7 C* ^+ |2 a$ s! ]( w0 h: t- {4 i2 Q# i4 q
update-global-reputation-list

5 v/ e2 X' b# m; K
- x# i& r; b. u  jpoll-class

1 P  m+ U0 z0 k* D, q; V& o7 d$ P% [5 m! M! A% t
get-color

2 y6 K$ O6 K0 ?; y+ w
3 P9 [5 e" _; w; e]]3 B8 l2 @( p; f( @

% Y9 ~: j. ^% Z: P* \/ P$ R;;
如果所得的信任度满足条件,则进行交易
! k* B/ j( a% M- h
* h: q8 j0 e: G. U0 x2 z[

& M6 C3 u1 ~! C) O  e
6 r# l; N1 I# ~+ drt random 360

3 E8 W! U' [2 X; o9 w
, e/ l; u5 I# |9 `fd 1

5 U1 B; }7 |" p# |3 g+ A0 ?/ y# }# N4 p  M" e
]
6 f- N( k1 }6 y

9 q, k; }' R4 _7 `2 S  Q& C3 V7 _end

7 F; H- m: x' T" w" |+ q2 p
! n8 j( f" c0 `" tto do-trust + X7 S/ r4 L' u3 }: l! f9 s
set trust-ok False
" A5 R1 i9 Y4 y; h* \' _
- i) r8 M+ t4 P

8 {- ?/ k7 O9 x) {1 y( X' ]let max-trade-times 0
# s$ R' X* Z/ B* g. I# aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- \# b5 T' v7 A& e' d. clet max-trade-money 0
; N. m: D4 g: i( ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( i9 d+ h+ v! S- {  Y, Q4 Y2 P1 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: _/ _% w3 D* a6 G# c* _/ z
# C4 z; ^$ L4 Z' ^! [9 t
. \6 Q& K/ Y$ w( t% ]4 E8 I0 Y
get-global-proportion3 V8 _5 ]% W7 J+ D6 \6 P
let trust-value
9 H0 Y7 U/ I5 ?/ a7 f/ t/ S6 Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; s! U6 f& ^" i1 i
if(trust-value > trade-trust-value)
" S" z6 G5 O/ m- w: s6 \& q[set trust-ok true]
. C( h- B( m* N! q' Dend
6 J7 I" H: F! k' u. l2 x2 G
4 D" e% m& q0 ~) Cto get-global-proportion, g) v' B/ W5 F6 s5 R/ B$ `+ s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 T7 e+ ~" g' U' h; \[set global-proportion 0]9 _7 k+ C8 s: Q5 z
[let i 0
: o% w& k* h  W, `( vlet sum-money 0" D4 j" ]* d7 R- C; k1 f  ]$ ~
while[ i < people]7 k: x6 X" q% R& y- o; `
[* A) X7 a7 n- X3 k2 F* _+ g
if( length (item i+ U3 N7 f3 Z! K
[trade-record-all] of customer) > 3 )
0 l1 [' z) o5 B, ]8 Y* Z
[
+ b& F$ U, ^+ w3 ]* X5 c7 Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 q- Z. p% t/ ~4 w]! Y( a( y7 r$ R4 k' ]7 e( ?
]" w; u: g  b' ]
let j 0
) O1 L* ^; N0 Q: E: Q0 ?let note 0
' \7 j+ d# a9 U2 I7 f9 Hwhile[ j < people]. H8 i4 F' p& f( w4 h
[/ v$ G; X. I+ c; O( s- W
if( length (item i; F) C1 w* x& M! A6 D! c% E
[trade-record-all] of customer) > 3 )

3 y# K7 g( P7 `9 W0 l. r5 ?9 F[
1 i% \5 O0 Z$ kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ r# u2 ?+ i1 i. V; Y5 y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' |: h4 x/ U) D; l+ w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" R6 c4 E9 I& W/ t
]/ N, u+ b" o* T" O% F6 W
]
  Z, |. A; F: x3 w, L) `% Uset global-proportion note7 ]* L0 W" d/ e+ z) F
]
. G/ g6 C: ^8 vend
! O0 E. n9 Z( @/ j3 M) u) a
4 p$ @) Q0 x) ], f6 v0 ]5 mto do-trade& @( r  G; o3 D* ~* K
;;
这个过程实际上是给双方作出评价的过程
# j8 ^( d" @2 g. o/ dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 y2 i8 |2 O5 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; R' \# L# Y. F! t5 fset trade-record-current lput(timer) trade-record-current% C+ i2 s& l. n/ J
;;
评价时间; Z, G% h. v2 S7 j  q- b6 d+ p& K
ask myself [1 o# d1 |5 s# ]
update-local-reputation, ~$ L4 [5 s; y1 @8 {
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 M" Y1 M- a* d  Z]
' [& D- k2 Q4 J. `7 qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& p3 I8 j; p+ y( [  I0 L
;;
将此次交易的记录加入到trade-record-one
& I6 O; S$ k( {6 k- [  d; oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. H/ b* L5 l0 vlet note (item 2 trade-record-current )
9 u' x2 T5 `0 M4 L: M& yset trade-record-current
. P9 a5 ~; P# l(replace-item 2 trade-record-current (item 3 trade-record-current))

- u2 K  `' |$ c/ {0 ^+ hset trade-record-current7 f! ~$ J7 A/ ~7 t
(replace-item 3 trade-record-current note)
1 ~9 h" \2 |  ~/ C5 S1 _8 |
6 x) T1 H0 ?9 I; W$ @; M5 k2 \2 u

% A$ B  O$ j$ P4 J: Y( H& @ask customer [$ q* j9 p: n( Y( E: d- b. k% R& K
update-local-reputation# r3 l8 f; g5 L
set trade-record-current& c! _$ G3 I( `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# U( V8 Q" H% e* i3 f; ?0 q]4 ]4 c$ s. |8 z( L* w

2 `& k5 e0 f0 x; I4 E5 t4 g# j6 a; [

$ i( t2 X& m2 ~: b6 L' Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 C2 y1 A/ S$ f

- J3 p9 Z2 m0 Y, C9 H8 kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 K; c, {0 e- D;;
将此次交易的记录加入到customertrade-record-all
; ]6 v) L/ |* F4 u* e, w9 Bend, S. s# f3 z: k9 v/ @9 Y
! B, a! Z7 J7 B: U* e/ o
to update-local-reputation
; R& Z# `" e7 j7 n& u/ @, ]set [trade-record-one-len] of myself length [trade-record-one] of myself
. ^! s% n0 Y2 |* L9 L. G2 z, ]2 W2 T  p3 p& z* Q8 K  N

( t3 i) f3 C1 r; c# X;;if [trade-record-one-len] of myself > 3

. j! d( E. S7 g, gupdate-neighbor-total, \" i0 I& r2 v/ }! x9 s# J
;;
更新邻居节点的数目,在此进行
9 Z$ i" Q* W0 j; Xlet i 3  z- U' F# S2 ?* W5 o
let sum-time 05 K5 c1 `( M! X8 H# K
while[i < [trade-record-one-len] of myself]
) ~6 [+ I! o0 f4 ~7 b[: D3 [( C) E0 q% Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- K3 O! @, f4 ~2 `4 u; R: p3 v- N! [
set i
" _2 H  V* \/ x- k0 f5 `2 E( i + 1)
7 a7 ^# n2 K: @( P8 g! Q* k
]- ]2 k6 H$ R1 {4 {  s
let j 3! j9 l0 b; T6 v, z" V: C8 d
let sum-money 0
! ]" Z  A9 |+ Z0 e% x4 {while[j < [trade-record-one-len] of myself]7 v8 \0 {/ g8 [
[1 l6 s/ g8 u4 p8 }) o/ X- ^8 t3 B
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)
% w' T- r' M9 ?( B5 Eset j
# Q" q, s& e$ E: q0 t( j + 1)
" e  L" F3 |9 s+ l3 n+ e* Z1 T. K
]
( M6 {' z* z7 n4 r' k. [, K2 Ulet k 3
" V3 d" Q4 z: \) D8 blet power 0- X+ j4 y8 G4 G  k, h# ]
let local 09 P! V5 p8 O6 P3 t0 D0 x
while [k <[trade-record-one-len] of myself]
4 c  y& h' s! l[# d9 `8 G+ O1 d( T/ M6 q. L% x
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)
9 U6 E5 L+ W! Rset k (k + 1)
3 W7 s  h* H% t6 V/ H]
9 D3 n, m- X1 L9 T5 r% ~* X& rset [local-reputation] of myself (local)
" h5 B  ?' X/ v7 G: N* oend/ O" Y7 z+ e* g

4 r$ R, D  Y  f* z  F0 A! h& oto update-neighbor-total
+ t: R- a9 h, _5 S. r( g8 D, ?+ J$ n9 K! w8 j# p& j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' Q; @" u7 [0 [+ x9 @) `, U+ {- p( x1 ]$ @3 a8 ~
. n- }$ |; P( v5 ?7 n. \! w
end7 K* H3 N. }8 E+ D
% ?6 h3 k" X5 J6 @  E* w
to update-credibility-ijl . B' c9 v: y7 Q1 g" H

: t) G, }4 X4 u. r8 H8 z7 B, W;;
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。
' D/ b2 _+ n) [! c8 s3 jlet l 0
1 T1 Q" w+ B1 X0 a8 s) s/ vwhile[ l < people ]
  m6 ^0 }: D% s, O;;
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
8 ]8 u/ ]- ?! H+ }% j[
1 c( i- @# h7 c. \" j' |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 S7 O( {# V2 k, M5 a/ `% u
if (trade-record-one-j-l-len > 3)
% g$ a$ N+ n! d3 A. _7 l2 M6 E# X[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-one6 _, i  e$ ^$ D* i8 ^4 Y
let i 3
' v6 M# |( y! d2 P& blet sum-time 0
- s% U4 d, e0 n! dwhile[i < trade-record-one-len]
1 B% q  u8 E. S5 Z9 C" r# v5 t. Y[# w/ r0 f1 f' k3 l1 g3 o! `  J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& @5 _) E! l1 F: D2 @6 v1 sset i
- P/ G- V7 |2 u# [( i + 1)

2 B- D! u0 ]" s]" N9 ?6 l0 t- `' A& |+ N- [
let credibility-i-j-l 0" ~8 a3 o2 W7 D) @! S) y  [6 t+ _
;;i
评价(jjl的评价)" {4 P; n7 |) }) A6 a" Z& t
let j 3
4 k3 g: l+ v! }# j4 P5 T0 vlet k 4
+ t- T* v! Q4 F+ n, Bwhile[j < trade-record-one-len]+ ?0 W9 d: O' Q- r0 \6 [
[* _( F& P% l+ I. O; F5 Q0 m% `
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  f2 n7 i: l% e- Y4 S3 M. s
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' c+ O) Y/ Y9 V9 s/ w& a  \* S4 v
set j
; f6 X1 W) F; M( j + 1)
' l4 [7 I9 _% l0 y
]& h2 a) i! D- `8 ^& f
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 ))  B, a7 E) R# e2 D1 N  P+ F$ B! X

' ]6 a7 W5 U$ `2 d9 h9 H$ ]
$ N8 M) W; p8 F" w( J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 s, S+ m0 a/ G. Z! I% o9 ?;;
及时更新il的评价质量的评价
$ A1 ?6 C* z3 @3 B9 |4 `* _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( ?4 Z- Q* ^* v/ [/ Yset l (l + 1)! k% H* Y- Z. N5 Q+ H; ]8 t9 ?; Q+ z
]0 R- X. A$ S1 Q) M" E
end6 ^2 K; g# u+ _! M" a$ x2 U* k  u9 u
- P$ U/ {0 L0 L% c; p+ b
to update-credibility-list; d! t  \$ ]6 U2 ^  [3 B/ A
let i 07 L* O7 G- z4 _# n0 i6 Z: S
while[i < people]
* m/ U2 @) s1 h2 s[
, O; q1 u7 y% T) q+ G4 xlet j 0
# }# ?; p) }( d: b/ b3 e9 a4 Jlet note 0
2 w" }2 x, I; c, G/ plet k 0+ N' I1 I5 K$ j7 k6 ~& o
;;
计作出过评价的邻居节点的数目
2 V) s7 f! W/ Z$ Ywhile[j < people]
$ B9 ~& H, _8 o6 [7 J[
2 i$ x! W& F5 G$ U( Q$ eif (item j( [credibility] of turtle (i + 1)) != -1)
  j4 j6 z$ f) M! b6 v" R! b" E& ?;;
判断是否给本turtle的评价质量做出过评价的节点
/ T2 b( _1 t: J( L- A  Z8 Q[set note (note + item j ([credibility]of turtle (i + 1)))2 e# m) P& t3 g6 r
;;*(exp (-(people - 2)))/(people - 2))]

$ c9 j7 j% C, C, Z4 |: Mset k (k + 1). k. e( q  B: k8 @: U
]
6 I. j3 U0 i; H$ m' {7 K: Bset j (j + 1)8 H& V8 a' m+ ~7 a+ v( X7 E
]/ c  {2 v) m1 `9 Z; V" g
set note (note *(exp (- (1 / k)))/ k)8 Q# N) C" `2 ?& \) N" Y) l3 A& q
set credibility-list (replace-item i credibility-list note)
4 t5 _( n+ i7 P1 T5 Q! _set i (i + 1)
. L- j3 j! ]" o5 s% }. I- l]
/ U+ N! D* g- H. t+ Nend* N$ k- H3 r1 M
6 p3 [3 k( K  a. l! C) [8 v
to update-global-reputation-list
" s& b) W+ I- b  _+ olet j 0
, a$ }( q* P" z7 b' O) [; B' T# wwhile[j < people]& \! s0 P. C% z5 N/ Y  X2 S7 w
[
( {. p1 J8 d* g1 S  ]4 a8 U7 Slet new 0
5 h6 ]! c2 w0 J/ l- [;;
暂存新的一个全局声誉8 I; e6 k) \* w0 s( }8 I" Q
let i 0
& M- g5 l7 ^9 G$ q# A& X' dlet sum-money 0
- |1 o0 E! t7 @7 o% wlet credibility-money 0# Q" C  e+ y$ H) u1 l; w0 x" H& A
while [i < people]( \& p+ K7 X# Q' c
[
0 S% L" h% ]; }# Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, x& x9 P( S! q# Q$ L( V" S2 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 }$ K: z! o. y; Qset i (i + 1)
' \  ^$ \) O2 I- H! C]
9 J. q) \9 b4 @0 M% ^1 rlet k 0+ z3 e5 t5 q9 O3 `' d# S/ ?
let new1 02 k4 @0 F" M' U8 w. l  X; T
while [k < people]
* z- Z( ^( o; @7 z+ H[
" |1 D- g7 r: N) z; Tset 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)5 q3 J9 e$ F5 o5 x; x6 d
set k (k + 1)0 ^4 n& K4 v, Q/ L: x: C
]
- ?6 |& L/ G) ?1 C7 Y; ]2 i$ q- zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 `/ B) t9 H! V4 j8 a: @! R& J8 {set global-reputation-list (replace-item j global-reputation-list new)
2 X% _9 |$ g  ^set j (j + 1)8 W4 s0 ~& B$ N# ?1 t7 c  k
]
- b6 ~3 [3 x8 ~% O5 lend
) _& Z* V: Q8 ]9 e( d( y3 y) H9 {+ q3 j
7 n5 N2 f3 ^! S' K

. a9 s. `+ p  P1 ]+ |to get-color
* f3 P* e+ A5 Z5 I4 D, C8 q/ x
set color blue
& H* `* i3 c( x4 K' v, A# _9 E
end
! v3 G! h6 m- x! g6 p7 D& }2 t' X; G. h
to poll-class
/ [1 k  t* V5 Rend
- C$ N8 {5 P! u# O" V( p( e3 P
* q7 t0 `2 y. r; F& u5 l4 gto setup-plot1
8 ~' D/ q  F8 j! l! Y! T
5 J, b- V) K9 X% L- P! Hset-current-plot "Trends-of-Local-reputation"

2 |' h0 i2 b  f- v( H4 V. A. o, {7 o# }, R8 [( Q& e. F+ u
set-plot-x-range 0 xmax
2 O$ x+ S) V# Q2 F) K1 a; K0 [

) t4 [- Y1 m! ^9 Z4 V1 |% Gset-plot-y-range 0.0 ymax
4 z% n& m" T  L2 O2 [$ ~
end
# b7 s/ B& P' q0 {9 T
7 b& W1 @# x+ F* X* d; M1 }: jto setup-plot2
- m+ s+ h* i6 t# H9 s$ k& l, l4 \  L+ b2 o, [
set-current-plot "Trends-of-global-reputation"
( c* C' a, f' F% [8 L: O
- Q2 \8 y0 d5 E" H2 w
set-plot-x-range 0 xmax

; c  n: y' L9 ]- G: x' }: t, e' n7 A  `$ `+ c* w" C8 B
set-plot-y-range 0.0 ymax
8 R$ S5 A/ Y. F& [7 P" h! w8 V4 r
end
) g/ w' W; Y+ t2 j. E5 S$ H) \! O0 Q1 U8 p) j4 I( T& l8 z& r
to setup-plot37 p2 a5 h& o" z+ |3 @& t' T+ H' e

( X" f" J- n( D* F' ]set-current-plot "Trends-of-credibility"
: g2 @* ^  p* W) u% T

9 @" N# Q; n: r$ m: Jset-plot-x-range 0 xmax

- Y0 p. J0 U7 G9 ~7 V& u6 x3 }/ o7 {. F5 X; b. P
set-plot-y-range 0.0 ymax
$ |! F2 E/ L; Y' B
end
9 W' Q6 ?% s- S( u- \  l5 D
! _, X% ]- L) ~! oto do-plots
7 w9 P8 v2 |) f- ~' A+ eset-current-plot "Trends-of-Local-reputation"
: \  C6 M. \/ N5 Cset-current-plot-pen "Honest service", f3 |6 |- q" ~1 e; }/ \# K2 s
end
9 Y& m! a6 D( j  p
2 `: V; J5 p8 Z& N5 |[ 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 ^# F' ]  z: u+ c8 d
' r6 {( I7 @$ z1 a% a
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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