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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:
0 |& w0 g8 t* G  Y: `to do-business
; A  \) m. z0 ?/ }# \7 u& ] rt random 360
6 z6 k; y" c( T7 t6 j fd 1, Z8 h# z3 r! a9 S% L4 V' o. ~
ifelse(other turtles-here != nobody)[4 V4 B9 r1 ^4 P( n# i9 ]* _
   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.! u- @& X. w7 |3 o* A! t
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! y6 ~5 U2 Q) x8 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) w! o; ^7 b5 r& V
   set [trade-record-one-len] of self length [trade-record-one] of self( f0 `/ s7 Z" _; ~$ T" E
   set trade-record-current( list (timer) (random money-upper-limit))  G) F: ?1 a1 X6 R

$ n% b  k& z9 M  |( a* n# C问题的提示如下:
0 W. W$ @4 ?( t$ w  P( K1 D# y
+ k7 m" N4 t/ m9 h" A0 T- [error while turtle 50 running OF in procedure DO-BUSINESS
9 X" c5 j# @5 ~  called by procedure GO
$ }6 F/ ]4 r# s: V: {* G7 {2 DOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) N" z/ R/ L, e7 S  _: z
(halted running of go)
1 F% A8 V% t) q; u* ~2 x( r: @+ ^: D8 Q5 t
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~~
# i" t8 a# g3 }. P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
/ _6 ~1 m5 T  ]  K, a) V% m$ |1 aglobals[! n: |# Z+ l: M2 P# x% m
xmax, R0 J/ D  {! x( b8 @
ymax
# r4 D3 U. B0 b* o3 x: ]! aglobal-reputation-list2 y+ V- v2 X8 s7 i! ], a

( D5 W5 p/ W. c, K! H; m;;
每一个turtle的全局声誉都存在此LIST8 ?7 O/ a1 E3 k9 H6 ]6 H0 ~2 p
credibility-list
4 E, v) d& b5 I/ H8 b7 K' D& u* R. y;;
每一个turtle的评价可信度
1 O2 ?% q5 v3 H, z, {honest-service
2 V* g' m6 R. |: Runhonest-service
& x3 M; y  {" c( u7 Qoscillation  M/ [% b' T. K( H; E- v
rand-dynamic7 J$ q5 O+ S6 @! b! P
]
4 Z" ]5 ~- |9 f8 _; p. {- c
- m8 {  Y6 ?2 k: ]9 y' Gturtles-own[8 K1 N0 O) y& ]! p6 Y* y" e
trade-record-all/ x3 V- `/ H4 B2 v8 R
;;a list of lists,
trade-record-one组成& N/ H7 n8 Z) m: P8 V% f; S' B
trade-record-one9 V' W8 n. @6 X9 {$ p& Q$ P- p. 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4 J6 i& a* M- C6 U+ L+ v5 d' J
# T4 X! f1 M$ {% F1 @: C4 {
;;[
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]]
0 B$ d  H* H0 [: ~, j/ V1 [2 ?1 ktrade-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]
- n  h; c: h) Z2 @$ j2 acredibility-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list4 |5 G2 `- }: s
neighbor-total* O) U" `* N1 K) O% B4 s5 _
;;
记录该turtle的邻居节点的数目
% h- p1 A5 m, b5 g0 d& wtrade-time
; B# Y* Q6 Z6 R1 z! M;;
当前发生交易的turtle的交易时间. v$ o3 V$ r3 c+ M7 N3 z
appraise-give
, t% r* j7 \# w; j5 T;;
当前发生交易时给出的评价$ s( p1 Q: P  I8 y8 ?
appraise-receive0 e! @4 t# I' D. V; K
;;
当前发生交易时收到的评价6 q* b+ O7 S, z3 S' r) p  y' d- L
appraise-time' B  p( _1 N" M& I2 R6 P0 P" H
;;
当前发生交易时的评价时间$ ?$ ]+ K  c  w: c, n4 z4 T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( e8 V& `) D6 w7 q# H& W5 Z
trade-times-total* F! m7 t% k& U- |3 b. y0 a
;;
与当前turtle的交易总次数3 O/ ^. @: Z0 k3 n! k. i# z
trade-money-total
5 I7 K" h( E4 i  b;;
与当前turtle的交易总金额. n( U, T+ k9 @& m
local-reputation* \  H* a" I* X4 W4 r& U
global-reputation
1 O) j4 @# b0 M0 Qcredibility
7 n' J0 ^2 ?9 q;;
评价可信度,每次交易后都需要更新& L$ `8 ?8 D$ L8 p( p! f* n5 Q5 C
credibility-all3 z( u) L! s! ?% b7 c7 C6 \8 }( s
;;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
/ A7 l4 B5 L4 I& i# t5 U& a) W) C- 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0.57 W# m* o6 r( U& Q/ H) N5 Z6 W
credibility-one( \6 {+ j1 g9 G  h3 ?% @5 w
;;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people0 L  i% D9 Q) T* j  U
global-proportion: n' O$ x; x; J5 [4 a' X; ~) Z
customer. V9 F, [; Q9 G$ Y
customer-no
) q  i  I# ?: M2 xtrust-ok& k+ Q$ F5 K0 l8 C# A, s
trade-record-one-len;;trade-record-one的长度
, k6 k  n; X. r; C$ d, K/ a]
( s2 X, s" }; l+ S) @% x. T3 t; l4 P* b
;;setup procedure, O4 ^2 M( n! F6 [6 i
) x, W; m$ Z) e
to setup- H9 z/ o# _3 T& ~! G; J
% D  _" W$ k% b4 b7 Z
ca
5 y* S) F7 K4 _, y
& E3 ?) E7 n- g/ p. [: N3 C+ u  N
initialize-settings

8 ?" A' u$ H  P4 Z6 `. Q+ ]
1 ~. e2 h+ P3 o/ s$ \" n2 O$ J! n" }: pcrt people [setup-turtles]

7 u$ K: R! P5 ?
, U  K% _: e4 G& xreset-timer

. Q2 C8 J2 W* |9 H9 A0 c2 s. H
5 j8 N# c# f! f/ R: ]. Xpoll-class
" \' R1 Z& Y3 x7 {' O

% P8 {7 m( ?9 |6 ssetup-plots

4 U7 [' L7 d, s0 s& K3 a% w* {+ V& a) t
do-plots
: d. H4 u! I2 w. |. e6 [
end/ D4 I+ }8 l% u

" Z) z3 e4 c( e2 v. ?to initialize-settings/ p1 H5 H: N1 |: S0 B9 a2 w' p
/ f' z: {. s! f( f
set global-reputation-list []
  Z6 y: _$ b$ c
; o. b' f# |( X+ B( |5 D! f
set credibility-list n-values people [0.5]

; b" _  b# r# v5 t; Q4 H
- v" y6 Y* N$ z; C8 \set honest-service 0

# u, J  ^0 W' B9 o* T
% W7 S4 R& h0 K: E! fset unhonest-service 0

- ?. w6 F! X  T! i7 L
- ^5 O+ D3 g+ l, |7 Pset oscillation 0

, r3 F  d  y; V' N/ q# z6 k$ j) q
( e4 D* k, A1 ?9 b& @set rand-dynamic 0
2 V3 q/ c* z5 v/ s5 Z! p* O: S
end
7 [! o- X& v* k1 E/ e: j
1 v6 s/ |  j6 _* xto setup-turtles 3 w; q7 f# u+ j2 R1 m
set shape "person"
  o7 Q+ l% I# R4 P# C- Q* P: `setxy random-xcor random-ycor* i2 @/ P" T, i- R) r% J
set trade-record-one []
( w( l: p1 c4 T8 g

# e9 \' G% R3 sset trade-record-all n-values people [(list (? + 1) 0 0)]
% f  [2 G# ?' B; h

/ _6 V: `; \, V# r; H: \7 oset trade-record-current []
+ P4 V/ X; }! _% ]set credibility-receive []- z. @2 L) k6 H
set local-reputation 0.5
8 p' R+ @$ Q: L. Uset neighbor-total 0; N8 u) v4 y- j$ z& F9 {! K  R' }
set trade-times-total 0
" G8 Q1 l% ^- O' X0 X5 z  nset trade-money-total 0# l$ N2 A. b8 ^7 X6 N! a8 m
set customer nobody
5 h& e; z) r, }: vset credibility-all n-values people [creat-credibility]
# D% ^1 _4 `; u& P' Jset credibility n-values people [-1]0 [! V$ ]) ]  t& o
get-color
. y$ N3 u$ s; w, {$ ]) m1 ?' U9 [

! x- P. k( C4 T  A$ U# ]end4 m9 p$ A# Z! x4 l
  p$ _. A1 x2 w1 p8 Y/ Y# G
to-report creat-credibility
3 d8 V6 m7 L& E$ S' l  Dreport n-values people [0.5]
4 F7 ]; N( U) aend5 W: B# |" @& y) [3 {1 G, F

# a9 ?. e# m9 K- |% L* i) N0 {' sto setup-plots- U* |. g8 J- V* U* d. z
$ A. T  ]% S2 K3 @
set xmax 30
% N. i& r0 p; w- w2 h

/ B/ R3 j: T' G3 v9 S$ d4 |set ymax 1.0

6 k0 S2 i, ~+ j% [" h6 h
, @% R# R: Z/ u1 m' c3 v8 G# yclear-all-plots

# Z4 ]3 F/ r9 f1 z8 z: M8 j, [0 ]; u* D/ X6 C; N
setup-plot1

. b8 a; J2 Y: v& M: E$ Q" r
% O( p4 p  z' e1 bsetup-plot2

) ^' @7 |, R! y% L0 J1 k* M
5 k5 a  i5 u9 {! t  nsetup-plot3
8 J/ I) F' O9 r  q' V, t4 _' k, o
end
, D1 S& w1 C0 n2 e
( H! v. e9 y, a;;run time procedures
# K7 c2 y6 D: l7 G: I9 o% F6 ]6 C+ }: m' F
to go5 G8 Y' E$ q9 Q% A7 t' U
* [# g0 c8 g/ \& O- f; d: K
ask turtles [do-business]
9 c" ~$ u2 f1 P, _! }$ J3 p
end
3 x0 ~6 Z5 [/ Z4 D$ N, U* X$ |& g
6 r8 z" o/ y% G9 o/ O5 m0 vto do-business % l- h: e2 O/ m" v: ?1 R! B
& n; }$ R5 r# A1 M5 u

% B# k7 `( `. w+ d3 a  Ert random 360

& T, i8 G, K+ d& w6 X0 t6 v% s: }5 [" k6 q9 W8 U. R1 Z* B+ x
fd 1
) Z  h1 d: p; |

: S9 d; J5 C/ G  _ifelse(other turtles-here != nobody)[

- w& |( q% g1 h
3 T0 [" H% P& f' ?6 v1 {& Y# I( z9 Yset customer one-of other turtles-here
6 r) @$ X; ~: f1 N5 \5 t
) i9 U/ y$ f0 T3 |' f, N$ \1 S! q
;; set [customer] of customer myself
- H  R9 T' n- a8 ?5 h( i/ b, ]
. V7 z* {5 g* g7 D, m6 k% L+ z
set [trade-record-one] of self item (([who] of customer) - 1)6 r8 ?' S) ]! K  t* n
[trade-record-all]of self
# u% Z. d; C0 u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 ~+ ?: N3 J- T& v: J' w: y, z3 y- b7 }. A% j
set [trade-record-one] of customer item (([who] of self) - 1)
; i( T( t- n0 q1 B5 n5 I6 e' S/ U[trade-record-all]of customer
# U/ m% n. b0 L! N+ V" j
; U5 A: _* y. P* d% H: k1 h( g" O
set [trade-record-one-len] of self length [trade-record-one] of self
+ \2 _1 f& r1 u" k+ i

# n  a- I% _, R6 ~: Dset trade-record-current( list (timer) (random money-upper-limit))

( m% G  Y2 w7 l$ k3 s9 p1 n) P
ask self [do-trust]5 M9 x9 {1 w) h' `3 S) a& _
;;
先求ij的信任度
% f4 P5 @* X$ Q- I$ C- [1 X
8 C# x% v/ O3 F# mif ([trust-ok] of self)
  W+ X/ u" q0 ?7 }! v4 _( E: `$ l3 ];;
根据ij的信任度来决定是否与j进行交易[
2 Y$ _2 u# E9 V7 E! ]$ N/ J" Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 @, p8 I1 [6 U, Y, e% E
% G5 j* J7 o9 G: X
[

( n; ?' m+ I2 c0 j) G$ Z! V, p( b. Q& k3 |  j5 X/ F9 a. S
do-trade

$ X7 r! y7 A6 ]" I7 G: R/ Y0 d8 E& K: K: q7 w
update-credibility-ijl
- q3 x/ Y2 o) D
- h1 w7 U5 e+ f  Y; m! d- f
update-credibility-list3 M, y" e$ ]2 I+ ~

1 G% }  f) z; x# j; P' `8 w! u/ X, E  ?
update-global-reputation-list

  b3 U+ G0 U9 C$ m$ q( X
, X3 t5 P9 @; d& npoll-class

3 D' e+ T1 @2 M# S1 q
. ~: J! R  n$ J* q2 Aget-color

/ l/ q. v, m7 M
2 Z" a% L6 d. z6 \% K7 b]]% a; t6 u6 G, O

9 A. r7 B, K  k) i/ C+ I;;
如果所得的信任度满足条件,则进行交易
: h9 a" G; z) L, P- u  Y/ V3 T3 S9 W2 r+ I5 e0 U$ G- @: [1 b: X3 q
[
% _. h7 N# D- b( \9 {+ o
- u7 ~9 G6 c3 W& R
rt random 360

. T8 t, f, K, o$ W& f5 j8 l/ f/ _- v" r6 s( ]
fd 1
4 T' O/ }, L. k; k9 w8 J$ A! v6 l
& e) B$ @0 C$ j  b$ c! O
]

  c! t* m. z5 ]% w2 W9 Y  S$ v$ z5 X! J$ o9 g4 y% U
end
' y2 o' y7 B' V* o; T- |
* S' ~8 y, `3 q" j* K
to do-trust 3 O3 i2 J6 `) @
set trust-ok False
0 z1 {" k2 P2 ^( G
$ Y  D* Y! D1 u5 M+ [$ |
& @0 t9 M# s! @
let max-trade-times 0
' a! H  b4 ~4 u  M! y' i' ]3 mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' x" f  p$ k/ ]6 Z% h6 L* U) nlet max-trade-money 0
/ `# g# W- O5 v0 r  Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" y8 {4 x9 f' M# r6 b" {3 alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 ]% g+ N3 x& n% x8 e6 `

1 V+ V0 R: L3 p3 Q

& ]3 ]7 W5 N5 Xget-global-proportion2 ]2 ^! f3 _& A, H2 k3 }: F; M
let trust-value
' ]6 g  {; I1 f. J( v4 glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 J6 {& y6 v+ P9 }0 iif(trust-value > trade-trust-value)7 v: t) A. @9 W& k1 _) ?6 y& ~5 C7 X
[set trust-ok true]
1 S* z9 y; W$ g. d9 y; S; G4 u4 kend
9 `! p6 f0 N2 h/ B4 z
5 m7 U" d; d2 }0 tto get-global-proportion. P. T1 J2 r# `: c$ z, e! z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ K& Y% K+ I7 j, n/ a$ u3 p
[set global-proportion 0]- P# X6 f) t# M8 Z+ o8 `0 Y( ?
[let i 0
$ `" M: d% ?/ X. M" v8 D# _let sum-money 0
$ d* F. Y' P/ j) N3 Pwhile[ i < people]; F; y4 R& o3 P$ k8 R
[
5 B* _' H% G) X0 eif( length (item i
6 e) d" H& ^  y[trade-record-all] of customer) > 3 )

2 U5 `9 w% W- w9 \2 G4 n[: v) p1 q$ R. C. m( d( E. E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- B! ]% v1 c8 Y( B
]- u3 l/ ]: i, Z$ N! G
]: ?# t" h7 N% N/ q7 z
let j 0
& Z  M# ^' W* z# Flet note 0
8 H" k, O# R& ^/ u4 V4 n) cwhile[ j < people]
0 v; t" D5 N5 P( [( A- R# T[( z% O$ V; _/ u' @4 O7 b5 ]4 D
if( length (item i
- I- i$ m/ z- n$ i[trade-record-all] of customer) > 3 )

1 M7 d/ p/ {4 @$ Q9 @0 n1 l[; D' X$ A3 F& u1 b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* C, x, F5 k+ T0 c2 X& d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; b2 Y5 I8 R0 b# t2 J# X; s/ Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" r) ?, a5 s! G, |; ~7 J0 y
]3 m! g3 E- A! T; l
]& R, N0 U) Y, B" E! u. |- e
set global-proportion note* h* Y9 _2 e" `+ m& D& H4 F
]
0 J' G1 v5 ]2 R1 t1 bend! U2 l; T/ d7 g& S% W# B7 Y6 [- D

4 G$ ^6 q; U+ v- ~9 g% Q0 H5 {to do-trade
8 c- `5 Z' e0 ^' U/ M;;
这个过程实际上是给双方作出评价的过程
2 R  {2 [, g3 ?6 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ H3 k& \$ Q( Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. i: h2 C. A' R$ b2 [; r$ C- k9 s
set trade-record-current lput(timer) trade-record-current8 u! A) \3 u* |" q3 q, g
;;
评价时间' u+ ^1 v% E5 ?
ask myself [
( H5 i( Z, m- x6 f! T( s  h1 U' mupdate-local-reputation
$ G& I6 [* w3 W& C7 Gset trade-record-current lput([local-reputation] of myself) trade-record-current! v5 [* j8 e& B1 [6 a# \
]( j+ ?" T! J* J  r7 O  p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* F' @) X) ?2 z6 |
;;
将此次交易的记录加入到trade-record-one3 z# S% P3 I. ~) P: h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* v- G+ z% j/ E' h: Plet note (item 2 trade-record-current )5 C: o3 L' }" z7 \
set trade-record-current8 B7 Q9 |$ O( H
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 l8 f: Y7 n3 }; l, k7 i
set trade-record-current
7 w4 ?1 T& h0 s4 G4 C(replace-item 3 trade-record-current note)
- X, D( k" s4 Q
: O: J% f' [. b! f# t+ n# r+ e

+ r8 H+ `  b$ l+ H- D' _ask customer [
3 w) |7 s7 T3 ]! N% `7 n( v2 `update-local-reputation
3 ?% L# H6 ]8 D, F' @set trade-record-current3 C% U7 ]/ Y( o5 a# a- V$ P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 a2 f$ O( H2 C]! v; B4 u3 _$ Q: k' {) ]$ `

4 _! n3 l9 C) W" G% R$ Q1 Z

' J6 v5 H& V- c, t/ t. `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 Q6 d" C. |+ X( l* m" }

; Q0 a, w: n8 N" t9 [3 F9 B' `& \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% y) L. S$ \( F, L. G: y7 m7 Z;;
将此次交易的记录加入到customertrade-record-all
7 Q) Q& J! C4 fend
) D8 ?& G( ]3 G4 w8 J2 k, c0 U) Y0 x
to update-local-reputation+ x8 Y9 i0 t( m6 |+ [( _
set [trade-record-one-len] of myself length [trade-record-one] of myself
& D: R' J2 U% h% a' H9 r$ T# t7 d* l4 [8 ]/ t; K

8 |) l/ l% Z3 x, h8 t# d" R;;if [trade-record-one-len] of myself > 3

. r4 h1 I1 n! p- a2 }update-neighbor-total
! }# s1 l# j0 p" g/ l+ K;;
更新邻居节点的数目,在此进行( S* X/ F1 W8 J
let i 3
" K+ H2 W* f# Nlet sum-time 0
% `, E' x' o5 D9 V- v6 }0 Pwhile[i < [trade-record-one-len] of myself]- k) h8 q  |, [5 Q' v
[
3 O0 F' [6 T/ Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& M3 W. s" p1 O7 y6 S3 Z, e
set i) m3 e( O# o. L5 P: h: M1 [
( i + 1)
% Q) k* J0 d" q+ [$ x4 u
]6 T# q4 L! o3 L/ D
let j 3+ z+ s2 p4 P6 z" C
let sum-money 0
% n6 X, d- r% m$ g- _" N4 Gwhile[j < [trade-record-one-len] of myself], P/ |- u. s" L* i
[
1 K$ p- y3 g! Q: f) \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)( \6 r) c0 h! B1 b6 d, U
set j6 v' c) l3 f" ~$ [& D) H
( j + 1)
# Y1 z& _7 J, T) d; j& \
]; O% [* t% F+ M  l9 _
let k 3
) u( u: k& M% }4 t7 {2 o! h1 ?let power 0
" G2 u- e4 n8 }let local 0% }( e% V7 m( t6 E# q. l0 @
while [k <[trade-record-one-len] of myself]8 o- v3 l" V3 O
[: l5 ]/ v( n, j3 w" u- a" Z8 ]
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)
* [8 R5 H& q9 L% g% pset k (k + 1)
1 t( v% u* L5 \% P]
* g# s) b! _1 U. oset [local-reputation] of myself (local)$ u( D# t  T- r
end
& N9 A; n% y+ u8 ?, x2 z9 Y% y: Z  g6 C& J: `) d' m: w
to update-neighbor-total0 _7 m; C: n8 E4 D4 I5 s, N7 u0 L- N% r
# v  J1 t; w7 `2 p$ n" w: j2 f1 `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 e. [. m$ m: X$ \/ {7 i4 S3 n( t
3 o4 Q2 }2 i+ ]% I- c

! P7 `+ l! u1 N6 I! J& d  X/ Y4 aend
  v9 o& I( d! z1 e$ K! d8 t
. `" `: ^2 S2 G" X( ]to update-credibility-ijl
4 {  m  u* B- n' I5 U! d0 M. ?2 w3 Y/ P$ ^8 V) I" d  ~: m6 r# F9 x# E
;;
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。
/ _" W! b$ B; o# I/ Nlet l 0
/ N9 B4 \, z6 e2 gwhile[ l < people ]
8 a: A- g) f: q0 `6 E# ~;;
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
7 p5 U$ K. V- e. U9 t[
5 j# ?' }7 l2 _& Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  W5 ~$ T" _; G7 E1 c- I
if (trade-record-one-j-l-len > 3)
& j/ ]) p! ]) Z[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' A' Z( p) D, |* Z
let i 3/ F" K/ c% b; O% w; ~
let sum-time 0
: z  N0 Y2 L- {  T' n/ J9 Z! M) jwhile[i < trade-record-one-len]* d/ h, M6 z( k" u2 k( p. F8 R
[
: B0 D1 \7 t9 r3 t* N; v) v; E. A! fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 O7 \5 C$ z7 E* D, Z' kset i! I" R8 T3 o& |: k4 d' H
( i + 1)
" T3 q: |6 h% V/ j. V4 c
]
, m' q. Y7 E) B/ \let credibility-i-j-l 03 z  ^4 M" h9 c! f. r, w
;;i
评价(jjl的评价)0 I) F) f0 S' O8 o+ t( K
let j 3  V1 V% x# y7 J. J$ h/ H
let k 4
$ }4 S* B: F) R) n, Lwhile[j < trade-record-one-len]
# Q( N  z$ S- B, b' e: q/ R6 C[
0 Q/ `, n  @! ?1 Gwhile [((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! X9 C7 y# N7 ~
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)! R2 F4 u5 }* w. E% ~1 Z$ x
set j: h; E, ~8 ~$ u* a* e
( j + 1)

/ S* W0 F. B4 x( @5 V4 P]$ |5 O' |+ U$ E6 }* Q' [
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 k4 c5 G$ L3 G# v; C1 M$ l
; s5 M' d8 p+ ^6 l% T8 ?+ z. s
" _0 h( `. u$ ~. D9 V' m- d5 `9 V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& E# O* @5 x7 P7 ?9 Z( Z3 ];;
及时更新il的评价质量的评价
% Z% x0 n+ C6 b3 O; J6 ~! H# _0 Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* z, ?2 B! @+ Z* a( L3 Rset l (l + 1); @9 S2 H1 b3 X5 Q/ p
]
3 }- A$ w, h) W+ Pend# V- f: G5 u& G% x0 g( @

# l+ b! c$ ?. f$ Ito update-credibility-list
7 ~2 `/ k! P( g- x0 olet i 0, v4 n4 e  L9 `" N9 P
while[i < people]3 s/ J( L2 {* K9 P# C5 E) \
[+ K/ C& K8 P: c6 E+ W! [4 d
let j 0
  f* ~/ L! [# u, l2 Q; blet note 0; }# y9 V& m- ?: q# U
let k 0! k8 m' Y* P  C/ j+ z
;;
计作出过评价的邻居节点的数目4 B3 t% ~( r: f- i
while[j < people]) f/ p$ a. {, m, n& o( [
[
! @+ E( o1 R% i) x: `if (item j( [credibility] of turtle (i + 1)) != -1)( S: I$ ?2 Q. A
;;
判断是否给本turtle的评价质量做出过评价的节点' Q" o5 n: G% Q7 `/ X" y2 Q$ m
[set note (note + item j ([credibility]of turtle (i + 1)))2 z- o9 A5 e2 S! T. `- r3 p% s
;;*(exp (-(people - 2)))/(people - 2))]

( S- j/ c5 S  E) p+ e8 ?set k (k + 1)5 D4 l+ @- k9 X2 I; p) U
]
8 \7 k' \8 A9 Z  p1 f" D. Xset j (j + 1)
7 Q$ Y* [9 c3 u% x/ ?/ w]' Q& ^8 S% u* Q' B
set note (note *(exp (- (1 / k)))/ k)1 c! p1 y5 Y3 X3 y& N& o6 K; d% F
set credibility-list (replace-item i credibility-list note)
1 ~& K9 I( m5 S, fset i (i + 1). _$ x8 k& S  _( G- G0 [
]7 N6 G$ h& V! M# z1 a" P6 {+ S
end7 O9 s; ]2 M! j+ ^
( x+ R+ m) J1 V; V( V. d( a5 F
to update-global-reputation-list
! O7 V6 G5 ~! A0 W$ A8 \, p, olet j 0" g" F0 D  l( ]/ t
while[j < people]. p) @$ p5 D* F- C2 h6 L% h
[
8 P8 f3 Q# @! b6 ~+ Glet new 0; r" @+ M2 l3 V" `
;;
暂存新的一个全局声誉% t' u% d/ N- {" p
let i 0
2 j: I- u1 `6 [+ `( s: y: A0 `let sum-money 0
& A6 G- f6 X! A' r$ @3 q& P& _let credibility-money 0
- w0 t$ u9 p' c% rwhile [i < people]7 Z6 h2 K+ U- R2 g
[+ a6 M* f9 h# Z; {5 {% |+ P# y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- l. H' ?2 @5 ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 i7 o) D/ i  G: x$ T3 q  a7 Z- Vset i (i + 1)
, ^. G0 d) X3 g. ?+ B2 t) T]4 X9 D6 f8 s9 k* s! X" z
let k 0
0 I; K- p/ K" N  t* ~# A% glet new1 0
9 I! B/ w. w4 e/ Ewhile [k < people]' ?# U) J- F3 J  Y9 K& y+ ~3 Q" G
[% X2 J( F3 p0 C7 U. r
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)3 x  h, i( D! K' M
set k (k + 1)
) O( `# d4 h: j$ a9 z5 k! T  V( Q]6 q% p3 g" y- w0 `1 Y* d$ c9 i4 p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 }* g8 d! d: p9 gset global-reputation-list (replace-item j global-reputation-list new)
5 @0 G$ |) W# M4 a) Uset j (j + 1)! ~! V/ n' [' z4 `9 A% c7 l' v3 D3 D/ g
]
2 r. L! `; `, t. f7 Pend1 ^- K- G) b% V# s( J/ F$ S
/ m3 {8 R, n0 ^3 ], Y: C

- T5 l# L/ M' x  o0 u5 P2 G( j" Z' ^1 p; g2 ?9 k& J
to get-color% l9 P/ e" r1 S; I2 ]) G( u
# X+ l$ L- ~, E9 g& V2 [  B
set color blue

( N. h+ D* X4 n) q5 ?end
$ z% s3 M# E+ m( V& b$ j
6 G2 G/ m" n5 [7 g5 s0 qto poll-class, p  T9 A/ M+ N9 p9 M
end6 s! B" V" k. F# }8 o4 o! f

% u! M& n0 Q! J2 \$ j) Q( Mto setup-plot11 j! v/ e9 a$ Z$ O  A

" o% h" f3 ]+ V' Y8 R/ C) @set-current-plot "Trends-of-Local-reputation"
7 y0 Q' q* i0 \, y
7 y6 N5 v3 `1 c1 n, D4 T" b8 D
set-plot-x-range 0 xmax

) P# b1 h: {7 D3 c" x5 A; U: {2 w4 u% T; k- e
set-plot-y-range 0.0 ymax
$ Q) x7 h7 l8 K+ v
end
8 ]# j+ y) D. L
, X1 ^  {% O9 Jto setup-plot2
/ A4 j' i0 C0 w* n* t; a0 j' J8 B' p4 P. Z& v2 p
set-current-plot "Trends-of-global-reputation"
& m( p' J( E: q! M! ?4 {/ u6 E. v

; e; d4 w" Q% Q0 l! Vset-plot-x-range 0 xmax
+ X+ V$ ^2 `. q) @4 }- ?

4 B" h- N- m9 o) ~5 vset-plot-y-range 0.0 ymax
$ Y" C3 [) D0 I5 X
end4 ?, V. `1 Z9 J- o2 `0 L

- W$ k4 H$ |& ]to setup-plot34 `: A5 M# v/ u- J

) Z8 |! K, _! e5 x% |set-current-plot "Trends-of-credibility"

; O+ R/ v4 |8 w3 U' r  o3 d( j+ @" t$ X3 [/ y: Z/ w
set-plot-x-range 0 xmax

% w* X6 ^8 F' x$ V" w4 ]" l% \& I8 r+ }
set-plot-y-range 0.0 ymax
8 s4 S9 [6 C( E6 q  `) D+ ]
end7 G* b- K" Z2 e/ P% H& `, f5 G4 `
9 k  P. w4 {% i, |& h6 H# t; I1 ?
to do-plots$ w' I8 r3 J; R2 Y' U' l; f+ V# i
set-current-plot "Trends-of-Local-reputation"
% U0 M; d- Y/ t) U$ A8 ~set-current-plot-pen "Honest service"
8 p0 W2 v1 t6 x' pend; r/ q! H. s, ?1 k* m3 ^  E

" K! J! i& Y( i) l, f( r[ 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.
* S7 h8 V. m2 |8 K* P% r, _
3 S/ d- H# D- B+ f1 t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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