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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:
: A+ A; Q3 g' a9 cto do-business
4 o! G/ ?6 g  M8 z1 Q1 h rt random 360
5 ]% I2 j/ h' z; C fd 1
. o* F2 M9 U( P5 N ifelse(other turtles-here != nobody)[. l& U3 t! M  m; g1 q7 g6 Y
   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/ M' G/ \" {  a/ \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% [& _+ ?4 L0 u% Y& K' ]6 [  j, i2 S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 l3 B2 c# V2 j; u! ?) {  `; N   set [trade-record-one-len] of self length [trade-record-one] of self% ]/ N+ d. X( \5 j; c& L
   set trade-record-current( list (timer) (random money-upper-limit))
/ J9 I/ r9 X8 X5 |
5 |) Q2 o% ^/ a, A, q; i+ L: V问题的提示如下:1 A/ A3 I' _- f. p
$ L: J4 O8 Q' h# f3 ~
error while turtle 50 running OF in procedure DO-BUSINESS* k! U7 D( _0 O
  called by procedure GO6 h' ?. m: s8 k  ]! ]3 c& o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 {+ W$ T7 \& q; V, V/ T. @
(halted running of go)4 n/ O! C! @, c5 |& R5 o( m

3 }: w2 Q0 A6 t6 g9 p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~~; W0 V8 t' o6 s
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
0 ~) E* m7 R. B2 E; D$ I$ d4 fglobals[! @/ z2 V- P! s& z$ s4 C% M! g8 S
xmax
4 Z- ~4 J+ Y( a8 Tymax1 Y8 b1 i% v1 _9 a
global-reputation-list
; {6 c8 J% W6 [8 P% A7 Q
4 M. P5 A0 }1 R8 R;;
每一个turtle的全局声誉都存在此LIST
( j* O; T3 @( @" u2 ycredibility-list
% b& b1 {8 A, a; Q;;
每一个turtle的评价可信度
- g% o6 _$ S0 o' n: k9 Mhonest-service5 j/ Y7 {( B( r7 a: @2 j
unhonest-service, k9 M8 ?" N  ?$ Q7 N
oscillation
2 X9 @! ~) n. ^8 v  i1 x2 ?3 Qrand-dynamic0 k, e* W5 V; L2 ^% E
]+ c8 P* q8 E3 M! Z- c

+ ~; V& C4 ^  H* D1 _! cturtles-own[
( H' ]2 w& P- ?2 Z: Qtrade-record-all4 B' ~0 ~: h& |7 \: f
;;a list of lists,
trade-record-one组成
' A: H+ n! T9 A2 ?" t4 u: W! \$ r* utrade-record-one0 c1 R1 P' b& l( ?+ T2 i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ }/ S" j" J. V- K% n5 {) M6 t; v6 E
;;[
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]]) t& \0 B3 w) l
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]% ^0 R: r- W7 S6 F8 P( Q4 y! T
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
: Y; }4 I  r8 w. @neighbor-total( B. z" J# [" m+ ]" i* E" W
;;
记录该turtle的邻居节点的数目
, P# ]) t( ?3 k  g# i: H; _trade-time
: C8 W; K  K( I8 _- d;;
当前发生交易的turtle的交易时间; {" \, Z+ A% b
appraise-give) R* l% x1 X* X
;;
当前发生交易时给出的评价
; M! t9 e9 L" T1 ]2 P* j* |; `appraise-receive0 B! a. |4 D& R' ]
;;
当前发生交易时收到的评价
* m+ w# I7 n; N7 M7 P; |appraise-time
8 y5 N" }# b) d- x;;
当前发生交易时的评价时间
) \% @' h- @, e6 `) r# _local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ Z% d  ]3 _$ j/ `  D9 t
trade-times-total5 S, E5 L- X5 R$ [" x; h
;;
与当前turtle的交易总次数
  ]# \- w, h1 N. p7 ]% Ntrade-money-total; Y( s; N5 Q# X  ^! w7 \/ M8 C
;;
与当前turtle的交易总金额: B+ P. @3 m; U/ N, ?- e+ a
local-reputation( Q: m: }' Q3 Z
global-reputation* I& t: O# w: U5 c# j# t
credibility
% e2 a1 \$ O0 {& E1 B; I2 r;;
评价可信度,每次交易后都需要更新
- v4 U* K8 Y  m" h% x, x& Ucredibility-all  Z, \4 |9 ?( u( Q  @
;;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
3 E, e( L; S( z  j! d, V- W- {$ O$ q( a
;;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
: I( H/ Y4 y# tcredibility-one
7 h9 r3 I. d: U: z! G;;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
) A2 W  F; a% w. }$ p( g; o# R$ Jglobal-proportion! v$ p6 A( c2 p9 @6 L
customer( B& ?8 Z  M$ w, c1 s
customer-no
* R! Z* L7 O/ H  w# h  btrust-ok
, a& o% g1 m' ^+ Ftrade-record-one-len;;trade-record-one的长度
* a( X3 q2 |! c9 ^# u5 C]- T& C2 ~2 ]$ P( m; t) ?9 P' G
; J# y% g4 u" i" T# D% E
;;setup procedure
( K6 o/ p) W- Q% U
3 c6 e! i# ]/ V) r' Cto setup
% r7 f: c. G. `4 H; _/ o# _6 C* R$ H, J4 m6 F
ca
: K1 ?- o  q/ K5 J' A/ ]4 B1 C
6 J- V: O# B3 \# P& P
initialize-settings

( W$ }9 k  U1 O$ q6 a, E+ r2 {! }2 ^! R4 x7 {  A! z* ]
crt people [setup-turtles]
1 U' f/ |- C* |, V

+ p# a# Z3 D( p  W0 r: b3 v& ureset-timer
' y5 o. U1 d: \& x* _( T5 t, W' P2 t

- t7 J: _' @2 f( ]4 Y5 g$ k, opoll-class
- i' H. _- R( s
7 ?  v# f, j! r- v
setup-plots
; }( x2 k, ^/ q  J( @& Z
( q' ~6 R! b* d* U8 N3 g4 K
do-plots
7 D7 m2 L6 @2 U0 @6 e2 o
end
/ s8 r* }5 k) c# n( J" S, `
& w$ ?0 x: x. t* z2 i7 r0 U5 rto initialize-settings
* R* [7 x# S  L; |2 e/ i$ ?8 }. r. w0 f. ~. c
set global-reputation-list []

! ]  [2 O9 ?5 Q! B+ j$ p
' h9 ^) u) D, F* `set credibility-list n-values people [0.5]

, q+ @; I3 R$ T2 n5 o- L/ s3 p; ^7 y' ~" f
set honest-service 0

2 C6 \8 _- [" E4 G% x1 |) A( g/ `& l& S! E# c0 l
set unhonest-service 0

  x; y. d# I/ J7 \  F; r$ X# ^
% n# L" C" j' }. _" }! L6 G! Q; V/ Yset oscillation 0
1 @- E7 {8 l0 `3 ^* m3 l2 @
/ {1 E, t; K- l2 q- P$ T1 I0 k, s
set rand-dynamic 0
! e/ W8 {4 v8 j
end9 z4 ?5 B# P8 M, {7 L. U# x: h; G) \
- a$ k! N+ t) a* D- |5 V8 a/ n
to setup-turtles , s1 `( M% ~5 {/ N2 e
set shape "person"
# |1 _6 I' P/ z1 osetxy random-xcor random-ycor
# S- _" z# A: pset trade-record-one []
& y% D4 V, `$ s7 L! _8 p

! n, z5 H# D- x" \# m5 v' M. Uset trade-record-all n-values people [(list (? + 1) 0 0)]
" |0 J; g( C) D) W6 b" ^" T. b
7 d0 z( V$ x; c. |7 W
set trade-record-current [], S& W0 t7 A1 }
set credibility-receive []
# G1 q& |2 U6 h$ k0 Cset local-reputation 0.5" l8 T) t! _' ]% q: _
set neighbor-total 0
  Y3 _9 O* L) {  e/ J# F2 h# Vset trade-times-total 00 `: `6 K9 M7 j4 d. p; h) h& g. v( y
set trade-money-total 0
$ R" _& T5 |2 t2 [  nset customer nobody$ ], Z( j& R5 {1 p! G$ b
set credibility-all n-values people [creat-credibility]4 i0 [. k/ q. ?% J1 |* K
set credibility n-values people [-1]" `& V# C7 x0 y" D3 g# S/ D
get-color
' E/ O. j! k7 B% \) i/ B, T8 U8 G

# G& ?6 L( t8 i' R, a6 ]  send& R# z% |# M) J% j; ~3 ]
' A! P& _# j; t! g: s
to-report creat-credibility7 J4 ?- \( N6 J+ f1 G, V1 c" E: h
report n-values people [0.5]% H$ X& K5 F6 N; L) G1 G) w* _  r# E
end
0 E' ?' |4 k3 Q; a+ d' k
7 Y# ~% }4 N! D/ `to setup-plots
) e. J1 `  U3 I4 P
1 M1 ^5 C8 Q" w" g" Eset xmax 30

" A( o& b8 Y: F9 T) K2 y( e& z- C5 [; L+ V  @& U: x, a: L
set ymax 1.0

" l/ \% ?5 Z$ k0 X3 T( G" l7 l$ F' c5 o5 y: B* J
clear-all-plots

* w! p6 Q1 Z) E9 y0 b& g9 ?7 i  S( p# E9 j5 x
setup-plot1
- E: a% I9 Z7 G

; q/ L* y6 n& B2 ssetup-plot2

- j% g/ B5 u1 v/ z  R3 v; k) B4 L+ o+ T- B; l/ D, q  S4 M
setup-plot3

# ^" c# k+ Y) x5 b) T, lend
" N/ r  u$ a, r; R
3 y1 k6 z$ C7 {) a# J6 {+ J1 _;;run time procedures
5 ]) u* X* Q& Y4 {4 r! a
4 \3 ^' u) h8 |5 O; b: W" yto go
' {& E0 t1 @/ A  l: j# \* V$ v1 R# q( [1 _2 q) X
ask turtles [do-business]
# ]: f$ F  }" l
end
% Z; d! X- B8 |- k3 q* o4 M- l9 D
to do-business 8 a5 x' c  ?9 {- k# q3 Z

$ m' i2 F) i5 T: I1 k: Z7 f
1 {( U4 N* D8 T) Q7 nrt random 360

" w9 q: [; A9 C8 T4 _+ i. J
8 x0 [8 C2 A' R  h0 @5 Sfd 1

. [" J* R" K% {9 r; p' T' K7 }! V( s/ E* K
ifelse(other turtles-here != nobody)[

3 t" `5 q2 j7 H( e8 c* G" ^: g3 k; K+ i7 g! d% N2 [
set customer one-of other turtles-here
& k1 p4 n; T# }

5 v8 g! ?# f. u) S+ R# x/ [1 b4 W# w- m;; set [customer] of customer myself
/ Y( F: C; i1 f+ G' o

1 O/ E1 {( r( K5 s& Wset [trade-record-one] of self item (([who] of customer) - 1)( t6 M- I0 _: y, W
[trade-record-all]of self
4 i8 |! w4 S/ V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ I2 n$ |8 H2 W! K# h' \9 [* j
5 Z- {' O  @, v+ c
set [trade-record-one] of customer item (([who] of self) - 1)" x' M" @$ F# o( h5 E
[trade-record-all]of customer

( Z# Q' N2 m1 B7 a- u! F; V- [
" \8 p- D% x6 {. o, a& z- sset [trade-record-one-len] of self length [trade-record-one] of self
0 d0 H" y% I) X! B# v

! V0 t+ p# o1 Dset trade-record-current( list (timer) (random money-upper-limit))

  n- Y" p4 M5 ^. e1 u" ]1 T: Z1 k  q8 r' q$ K" j4 T
ask self [do-trust]4 v* q7 t  `3 p. g3 J- Q
;;
先求ij的信任度
1 A( N+ a* b1 x9 B2 w4 C. }- {
. O7 N& G( @/ ?: A, I5 w' F& j% n- cif ([trust-ok] of self)
' w  Z- J/ P  D" \7 s;;
根据ij的信任度来决定是否与j进行交易[+ f1 ]+ M. Y  C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 X& g' C4 t; G9 p# A" p: b2 E
1 m1 a6 [3 h+ q6 }/ S% n9 |* ^[
. ?& X, \2 i8 L0 [" u

& U5 D. v2 b; y  b5 Sdo-trade

9 K0 W: f5 ?- n0 M  r$ a3 S
. S3 i/ f1 }8 o, T2 qupdate-credibility-ijl

0 b7 I  |. f  H
7 K. Y; ~4 |( [0 Z" Vupdate-credibility-list0 `% ]* e: u7 A

* m9 j+ c2 G) C; [
6 W' i9 o4 |2 `update-global-reputation-list

3 V' b% k4 h' c/ B5 v
6 L1 T# P& I+ L& I5 R: X/ t  a: u) Dpoll-class

: q  C! A5 }: I5 Z+ j3 u8 Z9 {- {9 [0 H9 e' k% B
get-color

& F/ Q$ W# ?' g& B  j% q
$ S; ?5 y- V3 n* m% Q]]2 c: `  _% V1 H0 |6 G
! Q# f4 ~* B  R( t. F: V: s7 I! N
;;
如果所得的信任度满足条件,则进行交易2 g$ l9 i! t8 ]1 y5 r# P2 M
9 }8 n: M4 B" |0 C+ q+ z
[
0 R6 S& I& w4 A. `" J2 U

- B, F' u: |; \  F- d  o( q" Prt random 360
4 @0 h& ]/ v! J; }6 r7 V
$ @* p: p, N2 ~9 ]+ {) z6 G# b
fd 1
; M6 l0 `6 @. I! G1 W2 h- O( t

) g1 A/ I% f# s; J5 _0 G]

5 L( x0 ^$ q& |/ E# |
8 q% j; D7 e  Kend
/ u% \* [3 f/ J$ E1 z5 Q, d2 o8 l, e( k
7 x; _- S' J( x! c
to do-trust
3 a0 ~! _/ b$ z9 b$ Eset trust-ok False2 q% A# R" B" l# {  B- X

7 {- Y4 p% s$ s' {# y1 e

0 W8 {/ H# U, ]let max-trade-times 0
- a+ `' p4 p$ cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) n: ^, K- r0 Y6 L' K9 m2 R
let max-trade-money 0& S) s6 f! `1 P7 b" L3 M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 L" F* A- Z4 j; t! \2 J, d& m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 B$ q  T8 I/ U* D% y; [0 K7 \; F
- U8 D% Y, D9 w) G# M

' A. y% {. t; b4 [  y- Iget-global-proportion
% X  h  b3 v4 @/ z* rlet trust-value
, @. s$ D: V, n5 u" dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  P% e0 t9 E5 d; c& F6 X. Pif(trust-value > trade-trust-value)
: Z5 I6 P0 W. r2 T  c# [0 k7 ?4 {' |' r[set trust-ok true]
2 H, J; w+ m+ z$ n' R: xend7 ^2 v3 U: ]! q, p$ P4 n. F' O* `3 w
# ?3 I$ l4 g- R* M2 a  X
to get-global-proportion- E+ i8 F% J3 }. k, s) O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): j& ~- z+ g$ V2 V4 F4 _7 Y
[set global-proportion 0]8 K  Z/ k2 L  o, v- m. N5 J
[let i 0
+ Y/ s# S! @( m8 klet sum-money 0+ T- P2 s% X3 d) \$ ~. A7 g
while[ i < people]1 B2 W2 _* Z5 C9 u! f
[
# `/ G3 v5 M. E* E4 g3 _if( length (item i
3 j4 _9 w5 ]& S; n' r0 Q% J[trade-record-all] of customer) > 3 )
6 u! [, r( m4 K: s
[
. A* N( f* Y6 }# [  Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); E- s" f0 s7 Z/ y6 |" c
]
4 m. E, ~& W6 j+ Q4 g]
$ e& i4 ~' X8 G/ B+ Z3 Flet j 0
4 h+ ~2 `# T. ]) M1 m, Elet note 06 W# l# U! J+ u  h
while[ j < people]
, o. Y# B, T4 A! J[: \( q3 K% b# G. K. g0 ]  L
if( length (item i
! B& T$ h% C7 G( K[trade-record-all] of customer) > 3 )

1 e8 w9 A* o( |; y3 ]# R, ~[
/ D5 {# _' ?/ e, N1 u6 V3 D7 M) k& qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 D' |6 J+ V& j" `/ `[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- Q4 W& G$ Q7 B; q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 a; p* \9 n% h3 g0 Z4 `( K4 x' w8 T]
/ P  ?3 b: G0 n: W$ p]
( j0 H8 V) V8 O" E: h/ Z+ Kset global-proportion note+ r# K( j5 C4 v& k8 _2 I
]
  I0 g/ w5 [. A+ j! N* c% s4 ]9 iend
$ l, X$ N0 u, \2 N( U* V4 h
2 y; e9 O9 f& x8 Lto do-trade( Y3 p: |4 r1 `0 L
;;
这个过程实际上是给双方作出评价的过程
5 ~8 C6 H, ?$ ^7 v0 nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 u' s$ w0 E, `% J+ R" v6 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  z& j! T, w1 Q& v: r( c
set trade-record-current lput(timer) trade-record-current
, ?( U, z6 |: S. l' J2 J3 ]- o;;
评价时间
1 C& E/ A" X* E7 B( n$ xask myself [9 n: v4 N( X, e- g& c
update-local-reputation4 T% ?8 d4 o+ w- U9 K
set trade-record-current lput([local-reputation] of myself) trade-record-current
& m" f3 E9 n# X; g2 z  m9 A]. ?: L1 {1 V( F) `) Q7 _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  n! r9 g; p, d* r0 a;;
将此次交易的记录加入到trade-record-one
/ J2 n" \6 [/ B4 e7 S& oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( E: G# N; @3 O& y7 L) h2 I
let note (item 2 trade-record-current )0 K; a8 F$ b. t* ~3 l$ \7 h
set trade-record-current
9 A) m4 z; N+ x(replace-item 2 trade-record-current (item 3 trade-record-current))

2 l. x+ l$ j* \, c, eset trade-record-current! J" o( R3 R2 ]8 j
(replace-item 3 trade-record-current note)
! L0 |# ]) y- [  A3 u9 q$ T7 Q# v( j3 V3 @
9 E$ b5 C; H8 C6 T. x7 b  P
ask customer [' ^6 v$ j2 v% x3 c4 ~8 a
update-local-reputation# w8 o9 f5 C+ e$ t; M8 j
set trade-record-current/ O3 q: x9 X/ C( N1 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 C' p, }$ h& n* w) H7 J
]
2 O. V/ N0 x! e* G$ y2 Z
. h5 @1 P$ K+ s
4 @; I4 K" d- a' `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 G" h: f' d0 T* O1 z
' W  F6 H* c; _& a" S# e( F; ?0 p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 w' R1 e) g; _- H) j' W  y8 t
;;
将此次交易的记录加入到customertrade-record-all
/ y% x* K7 u  Z1 v& j1 J) Jend+ w/ F" a8 V, K5 h$ f" y. X- I
2 J  v7 k# p" R/ {2 Y# s' ^7 r  Y2 Z
to update-local-reputation
4 h1 `& H  T: |! Z* Jset [trade-record-one-len] of myself length [trade-record-one] of myself
1 @5 ^" I) X- Y4 V( U' \. m7 n2 F9 o4 W7 y! \9 O) S/ g6 r

' N$ a4 q9 Y# j;;if [trade-record-one-len] of myself > 3

. @* q, F6 t5 q' s, Y. wupdate-neighbor-total+ O) c* O" e+ P8 V/ Q( C
;;
更新邻居节点的数目,在此进行
+ K) S. w8 k4 L9 T; k& flet i 3( Z2 t; N7 V; j, p
let sum-time 0& Z# H2 |( J9 m/ M* r- j5 \7 q( Z$ l; J
while[i < [trade-record-one-len] of myself]
8 ]+ j1 c. O1 W( O2 G[1 ^# h: F2 ?1 E2 V$ E- A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% h& \7 L, Z+ Z4 T8 X
set i7 ~2 r( @) g3 l' p! e* W1 X$ U: |
( i + 1)
6 V! w$ d; J% e, j" H
]" g# V  z9 a, z- }
let j 3
/ Z6 k# h: ?) h& }+ q, E7 H; Zlet sum-money 0
" s3 m% }0 H4 b4 R3 T4 Awhile[j < [trade-record-one-len] of myself]
* }* x" ]" D) U/ [[
. |1 s; n8 n9 D/ l" a& r3 Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
% g- C4 Z' l# ]/ b" eset j
9 J% a6 c$ D; s( f  u2 y6 t- l( j + 1)
: X9 H* |" i! M3 s6 T- |
]- C) m9 `( U  Q! G
let k 3
% p5 f) Z( T# x2 alet power 0, f* v; G( ~) \
let local 02 m* _6 H; ^1 v# E$ u2 R8 b
while [k <[trade-record-one-len] of myself]# @7 k' B' Z* C2 C$ Z
[  |" R5 E8 a* _) M% }( a' A5 t
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)
  E) t% ^* Z. V: \. A1 Eset k (k + 1)6 f% I3 p3 w8 s3 o
]
. W7 N( S8 m, }8 _+ j6 P. iset [local-reputation] of myself (local)& G+ r9 L/ Q$ H; C- }2 ~
end+ `1 a/ N' _2 g4 R' D
& X" Y5 G8 y9 l, V
to update-neighbor-total2 g! ]( e0 K  `. O' p
: n/ L6 F; D# A$ F# ]1 k0 b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" Y! B- _9 D$ J% j+ ^1 Y, K3 F. ]1 B' Q8 e

! S' H# v) [. |  G+ cend
3 m7 Z4 e, B9 S$ j; o7 ?! P/ q  Q# X2 m. ~/ @
to update-credibility-ijl ( O, q" ?% o9 w8 w
) o% g/ A; j5 R  A5 v
;;
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。
# I' N6 \, I$ f/ z) q# C' Qlet l 0
( F" \2 t7 I0 G4 qwhile[ l < people ]. ?8 f+ h7 p( j2 N: V2 b
;;
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
( ?5 |0 J5 R& L  N+ l1 E: k) ~" ][
& y* l, z9 E& b! q! @3 dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 |  R* V, ]5 Aif (trade-record-one-j-l-len > 3)6 a4 i! g9 W) J9 f. B; J
[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
6 V' x5 _- F' S! o) D, mlet i 32 T4 p+ [( W$ j& S! Q, ^9 J, [
let sum-time 0
4 \8 C" }0 X& y' X# K9 e% N# T1 mwhile[i < trade-record-one-len]/ c# L  s+ x7 y! c$ e+ G  e- j4 O, S1 b
[6 ]/ r4 @/ ?# w  G4 C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), B' R1 v) {5 ]' K# m9 Q, Y: w
set i6 C+ i+ A  V2 E2 n* ]9 @6 W
( i + 1)
3 X' }% }3 ^2 @) G. M4 g( f5 I! v5 A
]
- I& u! w4 J% p3 rlet credibility-i-j-l 0
6 E& D$ N" W3 R) K4 u;;i
评价(jjl的评价). ~' h' E! K% l4 j
let j 3" L3 e( ^1 G$ T+ T6 J+ f
let k 4
2 ?) t  H9 q' s& i4 y+ ]- Vwhile[j < trade-record-one-len]" A" P5 ?3 z' `" c. z( M% l' u
[! ]. _: C6 \0 d2 G
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  e( [+ a  z" U; S. A3 X
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)
) V1 E. \. C$ R' L7 d' I' @' ]8 {set j2 I6 J% ?, d8 J- Q/ y
( j + 1)

# D9 Q% i0 c9 Q$ ^6 ~* K" _: U]" h; x! q& D# D$ `$ `3 P3 j
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 )); }! P9 S) Z. p1 S
# j2 y/ B9 S/ w6 o& c

5 ~$ M- x( \7 p1 z. `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ J2 n$ @0 s) g0 B
;;
及时更新il的评价质量的评价4 v; a+ h3 ?# V4 w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ b! `+ ]! o% v( r8 B0 b8 L
set l (l + 1)! R! _) x( `- D0 u
]8 ^- n# p. r3 Z2 A+ J3 j. X
end* R4 L  a, i( F% t0 c9 M

6 F! T4 |& q) t$ Dto update-credibility-list9 Q& @- h4 H9 k, i8 h
let i 0( T! }6 f, N8 ~: X8 x9 Y0 f, f
while[i < people]8 z+ Y! Y$ p/ u: l& p* w
[
9 E! j$ ?" |+ p6 ]/ {let j 00 l. L0 U2 [. D# D
let note 0; ?4 u1 Y0 w" ?( Z
let k 0
0 @' t; T3 N6 t/ B$ U;;
计作出过评价的邻居节点的数目( b2 x: g( |# b' `1 S! O1 g
while[j < people]
: W; X3 B4 j& o5 J# H[. v2 r7 T8 M% U: C# ?
if (item j( [credibility] of turtle (i + 1)) != -1)5 y% ]3 q+ f  ]
;;
判断是否给本turtle的评价质量做出过评价的节点
  h7 h1 [; {% H# J[set note (note + item j ([credibility]of turtle (i + 1)))
% S- }. Z* o! D: m0 Y$ B, L1 J;;*(exp (-(people - 2)))/(people - 2))]
0 n0 j) L/ _6 V5 q( o
set k (k + 1)
6 u7 u8 z1 t1 Q- L* f]
9 a5 T9 z$ ^* k1 F( _set j (j + 1): [9 K+ S& G+ G' t$ h
]5 z" D5 B' k0 K# g1 ^+ `5 g
set note (note *(exp (- (1 / k)))/ k)8 G7 w- y8 }( U6 I/ r
set credibility-list (replace-item i credibility-list note)7 ~+ ?8 k8 n; R3 x& T
set i (i + 1)' [0 K' A8 t: i
]
2 D# \4 q/ c- ]( \* A: M) Rend
4 X9 F8 c+ g# f- G( A) v1 [. d" h6 U% `, }/ n" E
to update-global-reputation-list& L; X2 u2 s( V# C- b; e9 l
let j 0# `& X7 ]" q1 g. s8 t
while[j < people]* |" c$ Y. N: P; D5 w" p3 W
[
: v: N! t: Z! t$ ?( s' r  }. ylet new 02 P+ y. f" D' b& m, t: F" ?- E
;;
暂存新的一个全局声誉
( G, u( q; U; U* R1 E  Wlet i 0
/ J3 J  z+ {; f: p0 f' T0 S. Klet sum-money 0
$ P* r. `4 z! ^8 dlet credibility-money 0
: c1 h. v6 y/ ~7 V+ G- ]while [i < people], u' o: \) ]) c" Q8 w" f2 ~
[; f! W) g  N) {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& @4 \" {# ]8 D5 S- @* ?% o1 i/ Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& j! Y$ |( J7 N( oset i (i + 1)
+ d1 m$ c/ [* K, c$ o4 @]
5 j3 i# C: W! S- p" Q, g/ Vlet k 0
) K: d3 ?8 Y3 ~9 p' a1 s: Y  zlet new1 0
. ~5 n. k$ W! V0 Qwhile [k < people]
0 b4 ^/ Y: [8 \4 }2 C[
# j& [! i- O6 U. @' jset 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)* i( c% M: h% J( ]% W
set k (k + 1)" S7 U7 k, r" h7 @) ~
]/ D4 k% [6 W* E) J* x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : G. y% j  G! k1 P6 {$ O3 ~
set global-reputation-list (replace-item j global-reputation-list new)0 k+ {" ]- b, j, L$ `7 O$ p
set j (j + 1)
( R3 P) P1 m0 N( @# l; ]' P]
+ i$ s1 @* M; ?! z4 O+ Z5 Pend* r8 u; l& H* A3 U! Z7 {) R

& x7 R2 A, \: P" T0 D  D
! g9 w2 P! A7 Q, j$ G* x- H% j+ T9 F* ^* s- j. b
to get-color
$ v* q# L/ f  }* b
: @: e2 @$ D" i" M% R7 P' pset color blue
$ e8 U0 x3 ^. B4 S
end& m; r. G# _. q5 _: I# R
& @( x3 S9 x/ P2 J" \8 E
to poll-class% x8 ^2 k( l% \8 [! t
end
- s% Q# i) W+ C; l; }) }1 o0 @
5 K8 [: _& o! \, X7 |  Y% lto setup-plot1, f; C, j; M' j
, z* z/ T) n" |/ @: z
set-current-plot "Trends-of-Local-reputation"
' Z) Z" b- o, n, T1 n5 n+ t

: z$ {- @: i' j7 fset-plot-x-range 0 xmax

" p4 }3 v& z! [; J7 S$ @5 J! ?( t+ z6 o5 T
set-plot-y-range 0.0 ymax
3 P' D& w/ E! O. t+ e; l& u, H
end4 X4 U# z, \( P' J' l7 v1 [/ |
" J1 f4 v$ F! I7 ^' G; s. b
to setup-plot2
8 }, n$ \9 P) N% \' a+ U- t4 T
6 f  Y9 [; ?! d6 G6 K+ y2 ^set-current-plot "Trends-of-global-reputation"

: |; y. r2 u* k' S: t+ j" Z2 k& Z9 z3 L9 L
set-plot-x-range 0 xmax
+ V5 `+ @, Y2 v) O# _% Q

% g3 D9 p$ ]3 c( t. F3 d2 _. Y! ?set-plot-y-range 0.0 ymax
. Q1 w9 R' w! Y4 f4 `
end1 k+ W# k' F* g5 V6 Z! \9 U8 u
0 h' n  W5 T! `. p0 ?% j
to setup-plot3
! a3 W5 b! _& e% y9 C" M
: t1 Q' ], P& o- L. D3 U& vset-current-plot "Trends-of-credibility"

+ o: |3 ?; E$ K% Q% N+ J
9 o+ C, c( ?* o3 ~set-plot-x-range 0 xmax
3 j$ ?7 c3 A( E7 ^

) g. M, U+ x# Gset-plot-y-range 0.0 ymax

$ D& [: G/ N; l9 Aend
; V" w7 k+ h6 j; ]4 G# {( ?- y- b& v! o! v. s
to do-plots+ J; b. l5 U: w* ^, D
set-current-plot "Trends-of-Local-reputation"% C- |" ^+ M# f! }( i+ Y' L' x$ B" x  [
set-current-plot-pen "Honest service"  m* Q+ }" h# \9 g) c3 X
end4 C% q& s' ~; Z  `/ z7 D
' r1 K" T5 |" T
[ 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.0 v9 b1 e" F8 p' u) I

/ O4 H4 U! `) a- j, J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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