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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:
, ]' V+ Z) R# Z9 }/ Lto do-business 1 G& L  v8 ^3 b$ l# v9 h& H
rt random 360
% v* ]7 q6 Q3 \* g fd 1
# q" \$ h$ ~( X* ~ ifelse(other turtles-here != nobody)[1 d3 e. y4 F, R, j* w; X- N0 C
   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.
+ Q; ?9 F% [  m& w+ C5 e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * |8 j! G- p% J- V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 T0 v8 D# P* M
   set [trade-record-one-len] of self length [trade-record-one] of self
  C, G3 |; f* D0 E   set trade-record-current( list (timer) (random money-upper-limit))" j9 f5 O: k8 A
9 T8 U3 _( Y" s' R# f
问题的提示如下:! o$ H# F6 \/ h1 H
; b# c5 N) k! C. k
error while turtle 50 running OF in procedure DO-BUSINESS
1 N0 z+ x3 V, i% B2 M5 `; Y  called by procedure GO: A; z0 l6 M% p+ N3 Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: M: S9 i" t$ P2 Q' d) r
(halted running of go)
9 A5 M1 K3 X, M4 G) u) b$ [  P- c- A0 ^. x+ w* ]2 f- B, O% z
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~~  f& Z9 @, ]( u2 o
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: n+ I. K2 x3 |5 r
globals[
0 Q+ `. [/ K% i; j5 Y# axmax
$ Y9 ^$ {! {9 Hymax2 K' \- }2 w" s4 w$ `: e1 r
global-reputation-list
1 t! F* x- I6 e/ z( A: F1 M& |/ @& c: o, ?
;;
每一个turtle的全局声誉都存在此LIST1 [# P: L3 @' N* o8 P, b+ G3 b
credibility-list
0 I6 s+ z) g3 I; k- |- U;;
每一个turtle的评价可信度
- E1 l  k) E5 V9 m9 `- Nhonest-service- q3 W0 q' b' n% W2 B" B
unhonest-service6 }* d2 q4 Y# g/ c
oscillation
4 h) |* M6 d8 i! b3 K2 \% Arand-dynamic  B+ E3 n+ g: U3 C) e6 m2 a
]
% s1 o3 S8 Q$ u' Y2 c  r# [; e, P( F) |# Z- N4 M2 h4 t
turtles-own[, K' t) k  \  }+ E: S
trade-record-all, R+ t1 u( V# {9 p- j
;;a list of lists,
trade-record-one组成( u" [2 P; M) S$ N& {" W  G
trade-record-one- J2 u5 d# H& q) b0 ^2 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! \: c  N5 m9 X( f5 \6 K  Q. x* l
. }- u$ W6 T$ l3 K- `$ Q+ v: m( b;;[
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]]* y9 F+ {; l: I( J& C
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]
7 l4 s' j) c* F4 z/ e! ~) g6 Ucredibility-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
) o1 {& Q. Z- l( hneighbor-total
% l" w# ]% e" N7 `0 z;;
记录该turtle的邻居节点的数目
& j* ^- J7 @) w; Y9 G$ C+ z$ Utrade-time
7 v1 L- v/ T. X6 t, ]9 q; V& v;;
当前发生交易的turtle的交易时间
% ~  V! L( _& q! m) Xappraise-give
3 C5 u2 a# n. s; ~% T;;
当前发生交易时给出的评价; |/ @, z$ }$ V* E# _
appraise-receive% N( I  J4 H( R7 T& N. n
;;
当前发生交易时收到的评价2 p3 o0 ~4 M2 ?2 f' H2 ?, C
appraise-time
* w: d. Q# q6 q;;
当前发生交易时的评价时间
  s/ Q6 ?' C7 }4 f- Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ q# W7 z: N& d5 q$ G
trade-times-total
( r: p$ o, W6 M; {+ b7 R& p;;
与当前turtle的交易总次数
, \( _* q) q: j& N: W5 ktrade-money-total
, t; v  I5 O5 C+ X3 A: M;;
与当前turtle的交易总金额; ~$ Y2 @; Z# q& K& H$ M
local-reputation* f" @$ y! o4 L- [) Q
global-reputation
& R0 P) L' c  Ccredibility
  c) M1 |0 Z' O% Q: v;;
评价可信度,每次交易后都需要更新0 m% k: [; L) K" V: l. i7 z
credibility-all/ ~: N9 ?2 Z% U/ K
;;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
9 a, A0 c% N- h6 m  I
, L; e" _/ u) [+ b;;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+ M8 N* k6 g! F1 U3 t  C  Z
credibility-one: k. j- O/ N# _0 _, M( K2 K. b
;;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people5 G/ o& `+ }7 k4 k( p: U
global-proportion
+ E1 N1 ]1 P3 `# D' Ncustomer
" k9 }) D6 S! g6 ~/ @6 Fcustomer-no! l. t, Y5 j* I. s, R& F& d
trust-ok" b" }3 p( u) b7 l" X
trade-record-one-len;;trade-record-one的长度
' s$ Q2 e0 {/ ~6 p: B& l]
, G4 g5 P% ^) A3 n+ Y' l5 r& D$ S! m' O6 z; S
;;setup procedure$ y- g% @1 Q8 U# h% B

: ~9 ]- y" S9 j1 H+ s9 [to setup
+ g) `- M3 o$ _; j1 \' ~5 v# o1 R/ |
ca
) d' n# Z# ?' \

- X9 T2 j7 N8 t7 qinitialize-settings
# E5 j0 B& P2 T5 ?8 {2 m) B8 ~

" G' z7 ]- e4 b/ z7 Y8 Fcrt people [setup-turtles]
, l* Q5 E2 X% p+ ?1 n1 ?$ I( q5 v. t
7 O, U  ]/ ~1 D5 ]: j) o
reset-timer

2 r2 r' y3 u3 h% g4 v- y% ~
! B+ l% y* i9 d2 L5 F; tpoll-class

1 t4 L3 n% |+ x" {9 N
& k4 q3 }% A, {" a& Y7 W* x" zsetup-plots

2 I' W1 |2 N- D0 S2 u8 C% J! Y, b
do-plots
+ j# p  R, |+ g
end
, T' \$ K$ u. f& P* d( e( m
6 |: H2 j5 c  tto initialize-settings
2 e) u9 p/ n6 b, z% `! R
9 l4 i0 g) i! {9 t1 V& I6 A3 \( Rset global-reputation-list []
7 c# O/ x3 b% ^; @( W

+ e. [6 q; n3 X4 bset credibility-list n-values people [0.5]
) ^! k& a9 M0 v/ v# m( X, B
1 y8 q* t4 I) [# i
set honest-service 0

8 Q4 m" [. I7 s; f3 Q' f5 W( b
" N$ [8 G3 x  l  A+ oset unhonest-service 0
* m/ K% w. N4 C3 _
: [! r/ O% G/ y
set oscillation 0

( P( l  f& l" e6 c) A; H2 T, C
# }0 G3 x, S4 t) K" Z) D7 aset rand-dynamic 0

8 u: G4 M3 G4 N+ I0 x7 Fend! J4 B% f5 t6 P9 {1 k

5 p  h" R5 `/ Q. G9 q+ zto setup-turtles 9 \8 V, x! x% E6 {- }4 w6 [
set shape "person"
) x& I' Z9 i# [4 g/ A) `& l% Zsetxy random-xcor random-ycor* c  z4 P- F: g' y- w" P
set trade-record-one []
( @5 M5 e! B! N2 b- G) }

2 A; Q4 C# z: E8 }4 nset trade-record-all n-values people [(list (? + 1) 0 0)] 8 m  h; B% g$ J) v0 O6 z& ?0 b4 p

; B/ K* F# z7 U! I4 aset trade-record-current []/ ~7 Q  c8 R7 N/ J
set credibility-receive []
, H1 h/ G( W  M5 D1 nset local-reputation 0.5) ^: x( l, L8 }
set neighbor-total 0
% H. V6 I$ l1 qset trade-times-total 07 V- S( X5 J4 I* h  m% ^: n
set trade-money-total 0" C) ^. z. ~5 g/ `7 @
set customer nobody
, l4 a- M, u/ Y+ {2 k% a9 ]) ~! Wset credibility-all n-values people [creat-credibility]- J& B: ?; g: g5 A3 [' c
set credibility n-values people [-1]4 ?' V4 ~# t4 a% G2 c. L3 U0 I: @
get-color
* P2 Z* ]2 t: O! l! ]: R! f3 n* `
' |* S  s- E" E# p6 t( L2 ?
end
2 R! F# Z+ S* o
( i0 w1 c; M; D6 w3 Zto-report creat-credibility
: P# e3 U# n: ^% y* P+ c! [report n-values people [0.5]0 k2 }, ]! y4 Z" n/ u- y+ ?2 ~
end
/ Q) k1 w% ~) e* l6 z; d* o* P+ i+ O
6 D. ]; }  g* T# c- l( Fto setup-plots
" E. K1 |9 W. w3 O* ~3 m) h9 v8 A2 C* v) D; b) c7 ~
set xmax 30
. E2 U2 e1 a% \+ l7 ^  L8 |
3 o0 V/ F% Z+ M  S' n7 k, U
set ymax 1.0

3 F# H# R' I& {
0 }7 v( O. y- f% wclear-all-plots
, n- c1 k, l( G% k  F

: A8 {5 E9 F! Asetup-plot1
3 k6 ]+ l0 H& d" _/ e

, b' B  D9 S# Ssetup-plot2

; q, \) a( l. {# O; ^" L' Y9 `2 _
9 L* E# Q6 z! c5 k* Z$ S5 Y1 rsetup-plot3
: `' K5 _$ H) I4 F; y: E4 Z
end6 y4 @+ h1 {) O6 v2 k$ o; D4 b
6 f1 F" D0 h- K) l
;;run time procedures
' @8 P  x! Y+ {' Z. D! E
0 t8 F. |$ W. A! }- wto go7 m# j. a5 ~9 |" W

8 T3 U  S, b; [. R, Q( eask turtles [do-business]

& b! t6 |( f6 J8 L' lend
' N5 ^" E5 |- {$ J9 |6 P# @% k  G% k" |$ L# t
to do-business . E" ]- \. E$ A# t+ E
% W3 `! X) l+ N" i
3 q1 k0 s, s& D
rt random 360

' ]: l! M% [: w6 x; x; t' w' a" a; B& q6 b2 \
fd 1
- |8 j3 D5 x- |; V6 w  H, ^8 a! N
; ^0 F4 P4 v$ [; p) L1 r
ifelse(other turtles-here != nobody)[

6 _  |: l* v& H* v6 r
" _8 r$ o4 D) M# T/ P$ jset customer one-of other turtles-here

/ N; ]- T( m! k2 t7 ^
! N* Z: x% T  |* p5 o6 f" F;; set [customer] of customer myself
# e% U# k5 I' B2 Y1 }: r% K% n

/ q% Q- C  M, Q( Q* |% cset [trade-record-one] of self item (([who] of customer) - 1)4 P- C1 y" u+ L$ p
[trade-record-all]of self
7 {( J- S6 G/ m* q, K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ H# s2 F  \- J8 F0 x
# I$ I3 C5 n/ j3 Mset [trade-record-one] of customer item (([who] of self) - 1)
  R; m( s* v) M7 |. U[trade-record-all]of customer

! `+ b$ A; B8 b' ~8 v' J9 E/ n0 `& \/ Q# `0 I: ~% m
set [trade-record-one-len] of self length [trade-record-one] of self
* P8 ^* ?! B9 h8 t  `7 w  E; f

2 S6 \( d8 e3 Q  h; i: e# X. v6 Sset trade-record-current( list (timer) (random money-upper-limit))

  v9 R  q1 B# m+ e8 A7 n( T
+ h7 Y; C6 X2 [) P' vask self [do-trust]- ^4 S* W# u4 b* o. P
;;
先求ij的信任度
0 \6 D+ B9 T6 b5 I! q' v' `5 }  m: o: Q$ ~
if ([trust-ok] of self)
9 l4 U3 Y" j' W& R" u: U;;
根据ij的信任度来决定是否与j进行交易[
. `0 T+ Z+ a5 C0 {7 I; t6 ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  _. b4 D1 W, Z: U& W+ d2 h; M

- c; V' {/ G, M+ h; L, R& N0 y[

9 ~/ X/ ~0 n# d4 ^) Z: N
+ j4 p+ b- c  D6 Sdo-trade

# p8 \8 z8 H6 o6 Y  m6 Y- h% A8 Q5 H' o' l2 t8 s) r0 E
update-credibility-ijl

" l+ n# h' Q9 R5 d# G' U% q6 {1 E
! H  l* h8 \9 Q# @! uupdate-credibility-list
5 A8 T0 {) R: N; h' C0 p) l
+ a$ k4 U$ o$ g; M

0 ~3 X) \9 f, m  D8 I$ Dupdate-global-reputation-list
2 y6 H/ c+ p5 [% L3 [7 u

! G6 k5 U7 W4 T0 f  |# Npoll-class

9 _, D+ z" E% w
5 S6 H  G2 b" f" O9 |. ^get-color

2 j% J, m7 Y% m* t# ]" T, C
4 y& A, H# A6 H4 [; }1 ]]]
2 e; u, U. @+ F& Z% ~2 `) M( l. x& j4 c$ e
;;
如果所得的信任度满足条件,则进行交易
9 u8 }5 I. H: Q/ Z! L0 d+ P5 X8 A, F1 ^6 i& u0 S* u
[
" v- p0 O8 O) {+ `: N3 l, D8 U' v

+ r7 J+ ~4 {. |! S# grt random 360

* }: Y/ {- S4 P2 y. w% ~7 N6 e* e3 L7 V# `- A
fd 1

4 V8 `( A- q) S! j/ J
5 y. n0 w2 D$ L5 t- d. {- W]

, {! z1 _% v" i. i7 O" |; N) J
) v8 L6 W1 k5 Y0 r7 Rend

7 o5 [+ x  U  L4 a' F! x- i, a+ I+ q
to do-trust
0 C- k! A% J" y$ Z. N7 Gset trust-ok False
. G' D; H# q! P% f2 O5 E
0 @" M9 Y7 k- l

9 s1 w* c- w/ K9 G0 z" C1 {let max-trade-times 02 t2 p$ Z6 N/ _& W# k) y8 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! [# J/ R9 E- F$ x2 N  C
let max-trade-money 05 S, v7 n; `6 j% c+ i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) J6 E, f, V& j: V* @) J! Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. Z" V' i8 ]( o- K) I; Y9 |* Y7 Y% f) H% e! u) I
9 M( s  u% s  v  @& [- T* f+ O& P- V
get-global-proportion
6 W+ E& \8 b, vlet trust-value/ _( t2 ?: ?$ [- N0 x
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)

' t" ~" a" G" g3 z) t- M+ {if(trust-value > trade-trust-value)
! Y/ x# J$ Z. T[set trust-ok true]4 L8 @6 c+ {3 x# l6 x& A
end
5 a- ?9 H8 A/ y- r( R; ^
0 l$ m( ~2 u, a5 U. Tto get-global-proportion
9 h8 G; [, ~- m* m3 K% a% I/ `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ V8 t7 |( o4 l+ t" E7 p[set global-proportion 0]* Z- x4 m. N0 E' L
[let i 01 w& V8 `& f0 {2 E& p
let sum-money 0/ d" G! |( o5 X
while[ i < people]- N! |( f6 z; I8 D
[
6 P* ^, ~: Y$ K* Xif( length (item i# W& G  n% u; J' \5 w
[trade-record-all] of customer) > 3 )
; ?$ B+ @1 B$ W; g$ v
[! Z# J% h; k, A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! J: q& c. @) O9 q1 d' S]
8 X" q, \3 {% }4 f8 h4 X]% }+ [% `( p4 F1 h
let j 0: y; l# ^* M! \8 f5 P
let note 0
% k5 n: y" C  n9 a4 ^5 O0 Mwhile[ j < people]
. O% V4 k, I' g; G  l; g[
, m6 v4 C; E+ M+ A/ Eif( length (item i
/ b; N; L0 S$ w3 c[trade-record-all] of customer) > 3 )
5 H: d) w% g) |  Z
[
( L! e1 ^* k' t7 }2 Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ i& h. k- v2 W6 p  f: T$ w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 ~, p; C/ m. C' L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ K6 t6 ~4 q" z: B( V* ^, G
]
% I/ x9 T8 w1 t( N0 s]: \/ [' V0 |6 F4 e; g, x, F  _5 Q
set global-proportion note
# a1 U! B' C0 |, z4 ~]
' k( }0 a$ W. Y1 }, Iend
' \; O% R3 Q7 d3 {6 {$ G% u9 n; e. P$ D+ I( T- ?' z
to do-trade
6 M* Y. a, l6 e& Y7 f( X2 K6 {: C;;
这个过程实际上是给双方作出评价的过程
  B* \/ q0 L# T, C0 Y$ L' ~" ?# Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( ?$ q7 V  ~' z) sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ M/ q6 v7 O8 C4 G" m  h( xset trade-record-current lput(timer) trade-record-current+ d& x" c& o0 T+ [- y1 T( u: Z
;;
评价时间7 A+ F0 V& n+ {, R/ y
ask myself [! k0 A/ w9 r; s/ @& H
update-local-reputation0 F+ @5 x9 C2 @7 }: ]  b+ V6 U
set trade-record-current lput([local-reputation] of myself) trade-record-current" u2 h4 Y$ G$ r" f$ A* a& E
]5 v- Y; |$ ^  e. V9 d, `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 C% J2 X: n7 `1 c, I4 @
;;
将此次交易的记录加入到trade-record-one
7 m' W+ p  z1 M5 vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* i, Y) [/ B. c" w
let note (item 2 trade-record-current )7 Y9 j; b) t5 `; O. n
set trade-record-current
2 b" S% z4 P6 v2 K! S(replace-item 2 trade-record-current (item 3 trade-record-current))

- x& m% [% C2 x% X$ N0 q' Eset trade-record-current, Y. Q/ G4 f9 F$ \1 E
(replace-item 3 trade-record-current note). O4 t$ r0 P4 D) |# h. Q0 i. p
3 B4 \$ \0 u  v3 f! q! K
$ h& d" ~* }) r3 z
ask customer [
" _$ e, t- Z& H- I/ m. U: G8 @update-local-reputation
+ |' O$ K: I# D4 ]/ x+ ~set trade-record-current$ n6 ^# M+ I5 a9 P; O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* z2 g3 O0 W' c$ i6 p7 Z
]
7 S) C4 s7 |+ G8 Z7 i7 \2 f9 X! E3 D2 ^4 O- f( j. K) F+ p) C8 I

3 P7 }' e: ~  ^0 w, u! c% w$ F8 eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 }5 L$ T- I* l0 s, J

- K0 f: D( ?1 i/ x6 d; X. Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 m% ?4 j2 T1 ^2 r# X' I;;
将此次交易的记录加入到customertrade-record-all% d5 s5 [. v5 N2 u0 ^
end
5 I2 f' {5 p& b% H% G; P( {- z# B* e4 x+ x8 S& D% K6 h
to update-local-reputation
  T( N) f4 C. nset [trade-record-one-len] of myself length [trade-record-one] of myself1 P( }  x3 t" o5 B& P, `9 m
3 J- [. b" J' o9 y
4 g! K9 `. ~" k3 [% x' Q6 k
;;if [trade-record-one-len] of myself > 3
# U0 c& Z2 {. n- s- D
update-neighbor-total4 G+ g9 q4 V+ y' V, u0 y! z
;;
更新邻居节点的数目,在此进行
5 c- C# r5 r3 v' h* V" w% llet i 39 q: J7 i- R2 H+ N% f* B
let sum-time 0
- U& S0 {' B* Vwhile[i < [trade-record-one-len] of myself]
6 {5 N* b; N$ F0 _' X1 |[
+ `& `1 d- ]2 x, x  o+ Pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 a' K& b  C3 H. Vset i; S  y, ]1 |5 c  y! j- o. ~) t
( i + 1)

- g( R! z' k! U' Z' g; I]
4 O/ e9 I. w/ ]# v& o6 B6 K  hlet j 3
( m/ M8 W& r+ c/ W3 N. Y4 r" tlet sum-money 0+ ~- p) F( e* @! W6 C
while[j < [trade-record-one-len] of myself]$ p0 x4 Y+ u/ h  p% T" R$ _
[
4 M6 Z- _7 C# fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' G5 o) j+ X  [set j
- O- t% k- w4 X% l% g7 X6 E( j + 1)
- K* b8 d% {" A( U5 B( q
]
0 t. S  V$ D7 o3 J8 _let k 38 `' d! v1 b  b* Y" v9 c
let power 0
, _: Z1 g% A0 ~let local 0. k; D) o  M! e9 a
while [k <[trade-record-one-len] of myself]3 ~3 q/ G' v4 o& o
[, i2 \' P+ L$ L8 S4 A: R" v3 ?
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# Q' q5 {* B' I+ E8 y4 x- U" \
set k (k + 1). ?4 t! p; W2 Q; J/ z/ G, y
]; r9 E2 I# w$ B, M9 G; F. a5 G
set [local-reputation] of myself (local)$ W. W/ i4 z6 S. f" W* y
end1 O2 X! s" \+ D: _3 L1 X
* Z) W1 y8 i  g# F9 l% g
to update-neighbor-total
  T; a* s: ]( R2 X+ ~) q5 U8 P; W4 }1 c9 X! }6 F3 s1 J# ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* a* N2 y8 F2 Q. {+ m, J
  H: ]9 a) o1 A# q0 z6 q
: `. k/ c, P( _( L+ I& Y
end
9 c4 j, u* ?% s- L: q# m/ |* k! N- y  {5 x# j$ p
to update-credibility-ijl 2 W& t2 v! l3 [1 [! K, n3 ]
3 \& P! {2 h! J- K. N1 u
;;
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。
# q# ]" @$ y- ]let l 0& ]& \) T8 N9 U- h
while[ l < people ]
" T1 r2 O) E7 y. m;;
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
) R, C4 W9 M0 {6 j[% N8 n) o6 H$ s% }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' n- d+ _8 W% j% O% j0 @
if (trade-record-one-j-l-len > 3)
/ @& p7 @- c9 g4 a[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
5 y& t1 w9 a  M9 M' w9 ulet i 3
8 \0 r2 ?' I! z- c* ~let sum-time 0
9 `! O% D! S; C& |: V7 {- ?$ ~while[i < trade-record-one-len]1 w( L" r' B, l2 w6 e! P
[  g' ?3 K5 Z& J8 h# r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 G2 C1 J' Y, \4 }- E% Rset i
5 ?4 n  M' d& N( i + 1)
8 w! u) O" U& u; k7 y
]
4 X( O) g+ d3 nlet credibility-i-j-l 0& v- I5 X4 ^. `. N  T4 E
;;i
评价(jjl的评价). D5 C+ f" a1 b7 G) d* r7 a
let j 3) i9 z# M5 O( r5 Y. Q6 [" c  V
let k 4+ Z! k! A" a4 [) Y# D) e
while[j < trade-record-one-len]
% ^4 O  @% q$ r1 X" B4 B. m  V[" b2 L& K; Z. [
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* ?  r' J+ O. _
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), A- c# n2 f+ i+ w$ `  O0 t
set j
2 T1 q" k: ]+ t( j + 1)

: M5 V5 {( ^3 L]' z5 P" y( {# J; o3 Q% g% p, H
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 ))' L5 ~# `% |4 s3 v

$ u) q* R& a  [) a
0 Q+ G& b: `+ m* B+ |3 w" K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 s( F  L4 r4 m' s
;;
及时更新il的评价质量的评价
: D+ X, M# o8 Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 V0 A8 o$ m5 }& D
set l (l + 1)
3 h8 G  `& l9 v- D! o]+ f. X# X  D' s$ q- g% U
end7 v0 A: n( n) K2 p

+ K& x$ e* J3 U3 ito update-credibility-list$ J6 J- D. F# H, Z. s& F  L
let i 0- e1 C9 L- h! x4 k: v& W( j
while[i < people]% {' E' d$ z4 S2 D- r3 i
[9 f/ V- J# Q$ `7 L5 S
let j 0; d8 R5 q  t/ F: P
let note 0
  L. r& Q5 H  L9 Wlet k 0
* z0 g$ k& A& ?* v7 E' b4 |;;
计作出过评价的邻居节点的数目
8 c  o% i4 h) X5 A  \% vwhile[j < people]6 B3 t/ g3 h8 V* C- V
[
7 X9 [; u8 ?! D6 H! sif (item j( [credibility] of turtle (i + 1)) != -1)
, |& v8 o! c( L- B  Y- m;;
判断是否给本turtle的评价质量做出过评价的节点! b% B- x0 ?) ?: F
[set note (note + item j ([credibility]of turtle (i + 1)))
/ x4 w+ d, C4 G9 t$ e2 L$ `+ J;;*(exp (-(people - 2)))/(people - 2))]

, b2 B' H0 q7 o( b, \set k (k + 1)7 E3 F6 j* k- J+ w0 K3 }4 u
]4 b  G' L. v" e' {0 B6 o# P
set j (j + 1)
% z) P, p3 y# N& B* m" h6 {]8 J) q1 V2 D1 F* Y: `  a. a  c
set note (note *(exp (- (1 / k)))/ k)
, i; r: M, X" k2 Xset credibility-list (replace-item i credibility-list note)
" o2 G$ ~, G& j) T3 xset i (i + 1)
& w- Y: R$ D( i$ h7 d* {]7 Y6 g, v- }  g1 \
end
+ o/ Q2 l& c2 x  z" {0 O! ^5 |
+ e  S  S$ N* Hto update-global-reputation-list7 M; @% X; i' I  o8 o; r
let j 0% d2 P! [/ M" Q& V5 p
while[j < people]
) p& A8 k# F  D8 p. M[, Z" b+ \, X$ ~8 A3 q- o; S
let new 0
1 n' ?: t' Y7 [2 X' z& l;;
暂存新的一个全局声誉
3 ^' B$ O! ]+ m  i, rlet i 0
) }- \: d, M7 S5 mlet sum-money 0
; f5 T, @3 I: t9 \  E: z, @let credibility-money 0
% M. I5 ?( Y9 b( bwhile [i < people]
) F. N9 S) H" m7 y& k[
! T+ k7 V+ L, m" ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  u6 s# J/ c- e( v. Q# Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ E) b/ J! A+ u
set i (i + 1)
) P/ ~+ x0 G8 ?& Q]0 M& ~4 w0 k7 W
let k 0& z& Y/ }% w7 b8 Y! |
let new1 02 Z6 f( {) G  k/ C
while [k < people]
* Z* k; ^5 D: m[% x! Q- R3 g8 d; e- c# ~8 v. w: K
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)
: l: j& `. }/ V9 [set k (k + 1)
: w/ ^$ W) M, b& v2 r& []
$ v' k/ g! F/ [: B* ~! Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 y, N' H1 w/ ]
set global-reputation-list (replace-item j global-reputation-list new)
( z2 h0 t, J7 l( I3 z# ^: Sset j (j + 1)% f) R6 }0 z! }: y: P
]. d" y2 V6 _6 g; V
end
! L& M1 e9 Y2 ~8 l; {: t/ Y( {7 Y6 H8 O; N7 T
9 v; w1 S0 h, M. ^1 a) j

# K& K' O% e+ m& L6 s. H0 ?$ Sto get-color
+ |( \$ z- }. E' o) Q& T. K& d+ s, m+ z! k2 S
set color blue
, v% G+ c7 U  N5 n
end3 R3 m  ~* k: `$ o: O4 j- j
/ D! L/ F" A- G
to poll-class
5 s7 J, @; `7 G7 e9 I  p7 s9 O! Nend
, M6 n- W# C/ i7 C- a3 C8 U: ^! z+ S/ C9 e
to setup-plot1
0 f9 b0 m7 Y/ n0 {0 I4 |7 x
# v& B& i* G8 V8 R4 c0 {5 zset-current-plot "Trends-of-Local-reputation"

+ _- M" s+ }- v* B& ~/ h" L2 U
* `0 X3 b! S, ]/ |5 dset-plot-x-range 0 xmax

4 ^' S. M: R5 r' r6 w/ _
2 V& y( i0 n0 e- f6 `$ T( r7 Vset-plot-y-range 0.0 ymax

; K  J( K: S; i6 J, Lend& D6 k) H: o3 U. _* e% Z
3 l! c0 l* `! r9 d, T9 @6 D, I
to setup-plot2* m7 x$ n# |+ B8 s) q
' W6 J( E4 t7 U8 S# p; ~
set-current-plot "Trends-of-global-reputation"
; W& p; Q4 a, c% F6 j! u

$ P  L8 q/ y7 Z7 w9 iset-plot-x-range 0 xmax

) E; o/ T5 C+ w& r  I* [7 ]
2 `' Q' F' u2 a  q: ]set-plot-y-range 0.0 ymax
) I' f5 G! u/ Y& q
end% h8 ]- m, A1 J0 \
. [# F+ C; G  l% w4 O
to setup-plot3
! c/ Q) g' k* N7 ^0 U; q" J
: Z4 C; @0 q1 H, R5 ]0 nset-current-plot "Trends-of-credibility"

& h5 v$ _9 a4 G# q4 A0 c0 l$ _9 }/ z9 s% b2 W5 r3 P$ o, A' K( }4 `
set-plot-x-range 0 xmax
! P$ N% W1 w; K7 [
9 Q) B( E% s/ q% T! I
set-plot-y-range 0.0 ymax

& ?. s6 B* O6 F) i* X# k" D  q5 C' iend
3 D7 k' E3 f- x2 G9 j
" [/ T8 A, Y8 j9 }9 l/ `9 I- Xto do-plots, j/ Q0 @3 Z3 M4 w8 x9 ]& _
set-current-plot "Trends-of-Local-reputation"
3 B) [9 T; }- Bset-current-plot-pen "Honest service"
2 g* ?! I5 k' Nend$ X1 t) {; ]8 V5 t

( Q0 \/ V8 f+ x[ 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., b1 k% _% {( _( A% w7 B' S
9 V( ]( L1 L4 _1 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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