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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:
% [8 ]5 j# V2 b4 j& Qto do-business : S5 N) t" f7 D
rt random 360
4 B9 w5 g1 `1 s* U1 S# p, [, H fd 1: {5 k' S& |" |# f) r1 [- s( ?( ]$ k
ifelse(other turtles-here != nobody)[
. ?* ?' O$ A& t, B6 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.
+ O0 g6 L2 d* H5 Q8 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 V' N) g! m1 q4 U, |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* ^0 S* O3 @; l5 r
   set [trade-record-one-len] of self length [trade-record-one] of self1 [- Y9 \0 `( ?/ Z/ ]! P
   set trade-record-current( list (timer) (random money-upper-limit))
" h/ Z8 P2 h4 ~, v  |+ m
9 F2 b7 l. }  E* D2 `' E问题的提示如下:
0 C2 E* a( S( M/ c& e% r
. k; B( M, H- Y, B; K# Werror while turtle 50 running OF in procedure DO-BUSINESS
" B/ @% w) _/ C  called by procedure GO) K! t9 q" K( F  u( D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  k+ i" D& b! w- R/ c, T
(halted running of go)
& a" N" J% Z& B" _8 M4 Y1 d8 R( ]1 t9 |7 N
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~~
3 Q3 C$ G# }, d) I$ E8 \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
2 y1 C- s. `* }globals[
" u. Q4 X6 S$ i! X+ nxmax
' \  T* I  S8 M- s% ?ymax% @5 _) H& {- y6 N9 j  D
global-reputation-list; V0 {: e7 y1 ^$ h: t
- b/ H) a8 j) M. z" ]9 Q
;;
每一个turtle的全局声誉都存在此LIST  S: U# Q9 Q/ u% ~+ p
credibility-list5 b) @, }" v  K3 ~/ ~5 d7 W
;;
每一个turtle的评价可信度) f6 k. {5 Z. `1 [, m. O0 o7 C% q  n, x
honest-service- h7 p, J+ T% A' g* B1 s8 U
unhonest-service
% P8 _1 d7 W7 W. {: A; O# noscillation
$ e& n4 Y) z. _/ |" srand-dynamic% l4 }* q# X( o, a
]
/ P' Z% T! }+ E0 n; [& H% a
5 A+ E: y) `5 T- aturtles-own[8 ]1 U) m- x5 q2 a) \/ t
trade-record-all
5 U, c/ {0 |# ]7 w3 k4 I;;a list of lists,
trade-record-one组成
; H. L* G- l8 |3 ftrade-record-one
; A  v3 B0 M* z. Z/ O: F$ S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 e' A- i  _% S* I
, Y2 P+ ?' q4 P/ b' f( ~;;[
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]]
! @8 G7 N' b* p0 k' H/ \5 @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]
, a4 J! K: c# ?* s3 dcredibility-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
6 ?6 P3 J6 o) J7 W: N% V+ Yneighbor-total7 d# A; r( c+ C& Z$ x3 ~2 k
;;
记录该turtle的邻居节点的数目( x) z5 O8 |0 B! t/ F# ]7 A
trade-time7 X+ z, T1 o: @# {
;;
当前发生交易的turtle的交易时间
# H) M) `3 f5 G" G! E& Fappraise-give
, n7 o4 f. D. V$ n" c6 o9 N;;
当前发生交易时给出的评价/ `- n( C. f- {  t
appraise-receive. R3 _& y/ \9 d( d' X$ V
;;
当前发生交易时收到的评价
# r3 Q1 Z# f# e$ Q/ K( ?1 e( Fappraise-time+ C/ c$ ~8 h4 ^6 ?6 o; M
;;
当前发生交易时的评价时间9 [7 k' S; @7 z& c$ X1 U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 f5 H/ D: z0 R- |trade-times-total5 o& N8 U; D" w
;;
与当前turtle的交易总次数
) Q9 P% O: H& @5 z; _trade-money-total
5 d- q& a* ?; g0 Y" z0 U/ ?" R8 };;
与当前turtle的交易总金额" |1 M1 Y9 u7 @
local-reputation
, L3 Q3 c4 n( T$ g" zglobal-reputation
/ `9 ]$ P. C: ~* Ncredibility
6 s# n9 E; [. \5 R2 d;;
评价可信度,每次交易后都需要更新! H8 ~' ?2 A6 `: ?
credibility-all5 Y! ]+ f) y5 k8 w
;;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
* L) `( \  u: [1 l$ ~. K' j/ F1 k) h  [& f. I; G9 L
;;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
8 e! T2 z# J- |. s0 _credibility-one6 L5 Z. E3 v# j
;;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
. x2 l" U0 r, g/ g0 C7 \6 Qglobal-proportion$ y8 E4 Q9 l- A, v/ t- b
customer
' i# G5 x& z. D% T5 ocustomer-no
6 p6 [( J# K5 u. _6 e2 U2 m; qtrust-ok9 r; K; @; w* e. o
trade-record-one-len;;trade-record-one的长度4 F% l! a* F" J* ]. F
]
7 U7 s  ]$ \5 V; D% Y2 o) z
8 B% V; n% [3 u' T& r1 X;;setup procedure/ w/ a' p, k" {7 X% c. v$ z

% J1 X+ \5 w1 C9 P9 d0 \4 Gto setup
2 x0 X8 x% K/ R$ Y( H! h3 G& }6 X* s! T. D) z1 h
ca
: V/ v$ J/ S( [; h  s

2 [* u1 Q" F# M4 Pinitialize-settings
, l4 {" L5 M/ Y3 l

5 n7 _: u* v" q) Jcrt people [setup-turtles]

8 J, y1 V8 R- K3 {3 E
8 o; ~. t2 c5 k7 _7 [! Hreset-timer

/ b6 H5 P" s; ^  i
( c5 d2 U$ l; J+ S8 zpoll-class

' N5 i4 G- Q& q, c3 ]2 C
! ]8 x, q; g; _, s6 q, Ksetup-plots

& s6 [' U3 Y7 d3 y* I/ c% x6 e) B1 W6 v4 \+ i8 M' Z
do-plots

% q) H; Z1 x% }0 R# S& Nend
" ?; a' }/ O( ^  l3 K6 P, k" ?2 c5 }+ R4 I+ s0 U
to initialize-settings! ], I; r7 f6 J$ U
$ U; t  S: v! D: ^" ~
set global-reputation-list []
9 @" Y& u0 {- j3 y" P* o% Q

8 C2 r# y- w; B9 @# f5 c- V- J: v1 aset credibility-list n-values people [0.5]
2 z. `; y3 V  {4 \& I) {/ ^  H* t

8 y* M/ k5 S6 |+ z  Q$ ^2 g9 }set honest-service 0

( h0 t" _7 i; }5 g) U6 H( ~& D3 t0 n  D$ K$ ~- H
set unhonest-service 0
' {! T- v6 }& F4 g5 O

. Y2 a; W9 ^; o! |- Gset oscillation 0
$ a3 @5 b1 |) K$ H& ]4 |% b

/ w7 \# b1 n& x. l" {1 o( kset rand-dynamic 0
+ p% ^  j  _( `, J$ o; d: K
end
  ^) l; y7 [8 E
7 A$ Z0 g( i0 o$ ato setup-turtles
5 T3 S' C7 v1 ~- Q' ^set shape "person"
0 O2 O9 Q( u9 P/ ^3 nsetxy random-xcor random-ycor
/ l' T% {" s5 p& k, vset trade-record-one []
6 e2 i5 R1 q& z2 f1 d2 _" k
& \; N! K+ N$ w( Y7 u* w
set trade-record-all n-values people [(list (? + 1) 0 0)]
& b  I9 x; X$ t  t6 M/ {' A

9 C5 u1 q# Q: Q; I' L7 zset trade-record-current []
' L1 K, c7 H5 T, U% R# M2 pset credibility-receive []
% Q7 _* D0 G. S& S9 wset local-reputation 0.54 w+ k2 ?- g6 Z. R4 ?. S
set neighbor-total 0
( {8 Z& \+ u% T1 k1 S* Q0 }set trade-times-total 0
2 r: W) J& f% F. L+ m( K$ j6 C6 q# uset trade-money-total 0' ?5 I0 x9 B) m4 ]. ~" g7 z# ]
set customer nobody
- e0 z$ }5 M$ d5 @set credibility-all n-values people [creat-credibility]
$ ^) L0 g% ?$ c3 wset credibility n-values people [-1]
8 V! x( m- B) b9 p1 gget-color! F( q6 d! ~3 V& `  B1 ]
5 s$ S) V, H1 a# ?+ f
end3 l; ]/ l! l1 B% i: q' {; H

/ d( \- b$ N) N8 b! c1 T2 Eto-report creat-credibility
0 C+ `: q" i7 N7 A& }) E9 Zreport n-values people [0.5]* t- ]6 Q* y9 ^# T/ v# f" q
end. f. b4 g! A; u( _
: n3 [2 O* B1 G5 X" r
to setup-plots
! }4 l: Q. O. {- T# z8 L: A2 Z1 e; d7 K" {- E3 V
set xmax 30

- }" o3 G( I% v& U! \9 N. w. k" [. D8 O# o
set ymax 1.0

3 Y3 H) X8 h+ [1 V' u+ O4 K$ V
( B& e0 f+ I& b  m8 Gclear-all-plots

- O1 w# t; N' ]
& {" F- R0 w3 @) Osetup-plot1

  P1 G6 \% d% \* d+ z( z  s
; E; @4 c+ L9 Gsetup-plot2
9 Y" j: s" j1 [) f7 `  h) \+ q
8 S6 m/ ]  r# {2 S/ f3 c
setup-plot3

/ {) J1 ]$ _: }. _end
  v( Z1 w7 q0 x! O9 K5 T% d0 [/ B$ N/ ~0 c3 [
;;run time procedures' L, h' T7 j' [) U1 E6 V0 _
( @/ P9 G( Q8 i( |/ ~& Q
to go) L5 o) P0 Z6 K

3 i7 v2 R# z1 H, U% A* [" yask turtles [do-business]
3 p3 e0 S# w3 ?
end" w7 Q" H4 ~% d: C

0 u- [  b# S( S  n* N. R/ B  Mto do-business
2 V% Y: V" ?- _  D2 V6 {4 g. q3 K

  a8 W& i$ F# Z, _; _7 [" e7 ?" j! O' ^( r& a& t
rt random 360
; h& Q) P6 ?5 i, L3 r2 t/ K
4 Z8 K' o7 @0 n1 Y& K- s) Q
fd 1

6 }. \- \1 L9 A, C2 o5 O( W# \* m1 K
ifelse(other turtles-here != nobody)[

3 t5 B* j: O& I
* y: H% x8 y" T: ^; a/ n$ D! _set customer one-of other turtles-here
* u: I2 j" `+ B0 x  I

/ Q8 v% f6 T+ x) t6 K8 v' ]7 _;; set [customer] of customer myself

' q' ]& p* V9 u, g; D7 ^# i4 c
' ~1 K3 j6 g6 M3 nset [trade-record-one] of self item (([who] of customer) - 1)( `6 j, b5 n5 p) d4 b9 l, a
[trade-record-all]of self
; O* d) v# F" @9 X& s! u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: F: t: J! |7 p4 z" M
! ]# I5 C/ W1 a+ A! t
set [trade-record-one] of customer item (([who] of self) - 1)
- x( T4 o* r' r: b[trade-record-all]of customer
9 M) j- D. o7 i, g/ Q

$ N2 p7 C1 J% n# b2 v( A# a0 E; tset [trade-record-one-len] of self length [trade-record-one] of self

2 H0 P& ^5 N5 I  U0 w2 y
! i  K9 f  [: p# L- N/ ^/ k5 iset trade-record-current( list (timer) (random money-upper-limit))

2 ]) h0 y5 F7 S  F& z) p9 ~0 W: T9 l! l6 Y6 j3 A
ask self [do-trust]
) V$ T, ?2 t  J;;
先求ij的信任度
7 j) n7 J! h  g1 Q/ L0 s# V
$ k5 [, p' T8 E3 x0 X. Hif ([trust-ok] of self)
: o+ y! O4 N+ z# @;;
根据ij的信任度来决定是否与j进行交易[) \, N4 G0 s; p5 ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 E+ R' K5 [6 M! H
4 q, s: I/ D+ j- d7 L( a
[

' A1 x* O8 k, k+ I/ }$ r# a% F. r/ I' t1 v( v7 v9 B7 w' i9 S/ w$ P* P
do-trade

2 J& g3 K  n; J  G; ?
7 X7 ?" ~& p4 ^; Jupdate-credibility-ijl

, m+ B& f! I' p* i5 u  h' O- }& @) T/ F! c1 K
update-credibility-list
0 [2 T+ Z/ M3 M* l% ^) R" C9 T

3 g8 Y% Y" O; ]2 D6 P9 b' V5 i' t: o1 I% s6 w9 P
update-global-reputation-list

9 ^7 m! R1 `* p& O4 x: s5 T! d/ W; H3 S1 E& r1 b& ~: A. \8 m: s
poll-class
: F! y/ ]; g/ W" O. ?; ~5 |( V4 I
8 x1 i0 G& x! e) U8 n* K9 f- a9 ?3 ]
get-color

: z4 C' D  M4 V6 ]5 h" s
( b6 F6 d' A! X]]
3 n( s, b5 \' v. k
" }" C6 w# o( c;;
如果所得的信任度满足条件,则进行交易. Z5 ]# W* W0 C! A
: O+ h0 P/ Y7 w7 w6 S" H$ N
[
2 U8 m. s, X% X  h  s1 ?, A" Q

7 t6 @: a/ y9 @2 ~$ jrt random 360
4 S" K& z9 J! @; R. e
7 I4 ?8 e. i: f. Q# t; S
fd 1

( A. z+ Y0 Q  [3 h* _
; v$ @3 g3 n! }, P3 x]
$ A. B: ]& B5 I

! {) G6 O8 H7 z4 n$ ]: fend

5 V% H/ e' n5 C/ {7 a
% V* h. {) O$ P1 ?2 q5 {; C. Gto do-trust
: P8 C8 W! Z7 [( ]set trust-ok False
9 ]% p% X/ C+ F" h: f6 c% f- T

( q1 h; V( x4 Q0 {let max-trade-times 0
! k% B; |5 ^$ d+ N, m- Q/ H. Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 b2 Q3 v8 X/ g  Vlet max-trade-money 0
: m# V! `7 \& p' Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 v4 H5 c0 c4 `' [- r1 \let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( a. t5 e4 j9 ^' S  i- r: l

$ {) U$ @7 V' k$ h: s9 b; I/ D
6 @" g' R6 D+ R% |6 ^* z. `
get-global-proportion& i4 h  u. m- q! |* O# F
let trust-value
) [) f  E+ z* \& mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! o) g+ O- y8 x# h# l3 b! Q2 B
if(trust-value > trade-trust-value)
5 Y+ J% F. J6 A( q& g[set trust-ok true]  ], l* c6 B6 u) @' R% D
end7 F# n' \7 S# T# K. `) f. V+ {
$ q3 ]5 |6 L5 v2 L9 R
to get-global-proportion. V9 p1 _) Z3 [: z' a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- ]5 I* `* t0 ~7 @" f0 L# h
[set global-proportion 0]
* H+ b3 Q' m  C$ X[let i 0( D* V3 K' O5 y3 g7 z
let sum-money 0
7 p+ U  e5 Y0 G" K8 a$ Swhile[ i < people]
7 y  C5 U0 s# }0 V[5 c$ ^- j3 a. ?4 E& ?
if( length (item i
+ F9 ~2 h' t0 n$ P0 r( c" a[trade-record-all] of customer) > 3 )
' @9 @- A6 ]' |2 ?1 e0 \
[
& i7 p/ U! E4 P2 N/ ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ o3 q1 s$ G5 O/ d3 N3 j]
" V* n+ v( l' m]
* `* b. K  ]' ]0 @3 plet j 0
* q0 k: m6 l& B8 Y7 Elet note 0
2 M: Z+ z5 G! p  S; [" w5 \( I/ Vwhile[ j < people]# l1 N' E5 q1 A. X+ D: {
[3 e1 \" e1 d4 r7 G* _% N) M, Q9 u
if( length (item i3 o( Q$ J5 O* y2 h
[trade-record-all] of customer) > 3 )

: s% y( X; ^. d[
& Q2 N1 c+ y% l+ C" |4 P' Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ _/ F7 z* x1 Z, l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 {" N# s/ Y& V1 G, N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 S, B9 x# o7 M4 C8 b
]1 o' x0 V* i: C7 U8 |9 j5 o
]
' s$ Y! B( `: j$ ?1 kset global-proportion note
" T2 ~: _4 U- c! R( A]' q) A* C% e/ N) L, w& \
end( B& D: s3 t- M% p! z3 R; M
/ ^$ _: w8 R0 x# ~; Z
to do-trade9 n3 S9 a. G' o$ Z/ [0 w
;;
这个过程实际上是给双方作出评价的过程
, y7 `( ]" c4 }% ^. ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 q7 c7 j+ [/ c6 |' `. r6 j- i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 J6 D7 w# ]8 Lset trade-record-current lput(timer) trade-record-current. }2 c' ?  w7 I2 L3 [
;;
评价时间
$ _) j, Z3 u/ k: ~- dask myself [
/ G8 s4 X. o1 n' G/ W0 `update-local-reputation
: R/ U4 }! k+ Yset trade-record-current lput([local-reputation] of myself) trade-record-current
" E) ]- h) k5 h& n* r' x]
9 E( g: ^5 F6 W2 U) Y! Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 z* K0 y1 a6 h3 L
;;
将此次交易的记录加入到trade-record-one
# P9 Z2 S- h2 G4 {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), _; \: Q+ ?4 Q4 o, v
let note (item 2 trade-record-current )
6 R2 P! k6 t' @+ r- W8 B; k" [set trade-record-current. m6 Q: G8 a& ?+ }$ g
(replace-item 2 trade-record-current (item 3 trade-record-current))
' Y; Q* N4 P. z
set trade-record-current2 W& G) R8 W: I
(replace-item 3 trade-record-current note)" z  m0 I+ f0 I
: r1 y6 P7 H% r5 \: f# e( e
& X3 C7 T, f8 s2 E/ R4 s
ask customer [
7 x! g) k( a* a0 t* }' gupdate-local-reputation
7 l5 z  s2 q9 gset trade-record-current
  O) a7 I* h3 D& V- o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ u& L* q2 g( R3 i
]
1 w6 V9 K7 Y4 u& J+ X9 X7 |$ J/ n# p; [; h3 e( i% M

# U8 E' z0 [) h7 T" |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( ]- F2 G; b7 N/ f# `5 U' C% Q: i5 Y0 l
/ u  F0 M: {3 D) o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 x7 i+ k' u% a1 |2 A" |# v
;;
将此次交易的记录加入到customertrade-record-all- A; @% A% R9 z3 \& F
end6 s4 c0 p+ a" _/ }2 c$ X

1 b- n- r: B7 S! d6 @+ Bto update-local-reputation
* h5 P8 K6 C3 x( `! sset [trade-record-one-len] of myself length [trade-record-one] of myself' W# T9 _# f3 s3 u9 k4 u+ Q* e

$ c- v( [: ~7 p6 {4 V+ O5 c8 s2 R* ~4 z' d, P7 D
;;if [trade-record-one-len] of myself > 3
1 F" Q. N- Y2 X$ p- W  g
update-neighbor-total
; }  B: i1 B3 T# s7 p;;
更新邻居节点的数目,在此进行
# d6 G2 H" k0 x& y& a2 blet i 3
3 \/ K) q9 a! d' g0 Ilet sum-time 0
. {0 r6 o! _! Q. _* d2 g# D+ Fwhile[i < [trade-record-one-len] of myself]  x) P( o! @' e* C: v6 E
[
% Y, L) R5 o9 y1 X% G/ ~& gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 B6 G: M) z* z
set i5 {- s" y# _! {8 X
( i + 1)
; V" l1 C  V6 i: Q" s! n
]% t2 J4 q( _2 y% \
let j 34 I$ l$ S1 m8 ]* n- N2 r6 J
let sum-money 0# C2 l5 L: j4 {5 y2 R- P2 x" S
while[j < [trade-record-one-len] of myself]$ ~& Z" b; f3 ^( |1 c
[" o/ s" V# O8 Z0 E8 D0 G- E5 {
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)
" _- V; ^8 A& U1 g8 X1 ?set j, K/ i  D, Y, k1 s% I% L
( j + 1)
$ {8 D# y) e! X
]  H4 t, t6 y" S
let k 3
) {* l5 E9 d0 l9 g# b# m' Vlet power 0
+ [. }* f! Z  r; \5 Ilet local 0
' n6 j3 o- V7 m, T' Z* nwhile [k <[trade-record-one-len] of myself]5 V% U  z/ Q4 q! N/ Q
[
/ }  n" l1 q  l& Z; K3 @+ {0 bset 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)
, Q7 ?  d6 A# S& D' g; S0 X+ _- Yset k (k + 1)$ z$ ~9 N0 W$ }7 ^+ ~2 j
]  |( Z& }* b7 X( c( W
set [local-reputation] of myself (local)
* Z! h7 U0 N6 Vend
  }7 A8 a8 P+ g) G# N; q1 J  F# y- T+ w1 C
to update-neighbor-total
. }& ?  ~) Z# l# D, g, ^, V% L4 X
, H* e; J- Z* A9 hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: ]5 T( K3 F5 k' D& _8 I) y: s1 s( X2 Y; H" t0 Z2 l: b
1 `3 P4 C2 w# y5 Z
end# N- g& o' }( D! k$ N  B9 q3 m

: C* c4 z0 ~% mto update-credibility-ijl
2 h8 c" u; {# F8 b' H) }% e/ Z. k3 X( g% O8 g/ Z, e, Y
;;
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。3 C$ F3 ~, s8 \& [7 B
let l 02 T1 y% g) ^7 I6 p3 b& b/ C' J
while[ l < people ]9 I4 g* a9 |( K) l/ c, |
;;
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, w) N+ C+ _3 R/ n
[6 C- x. l. j" m) D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 r/ G2 l" f% {2 S2 \  E
if (trade-record-one-j-l-len > 3)/ W% W4 X& U6 y7 p7 S- Q
[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
+ B) }0 p" ]* X7 I" z' J  dlet i 3
; ?) f: K1 H8 b( v! Tlet sum-time 0
" w& p) O* \! }2 P- gwhile[i < trade-record-one-len]
3 C) U0 k0 M. n2 T# g[
1 Q% l7 ^4 r% k7 b; [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( z& ?0 i9 m' b  W2 ]0 s' U2 tset i
6 k  z3 J4 q& s% d( i + 1)
# f$ L& B& b4 }+ V; X
]: g" z3 ]( |7 v9 |4 L: @
let credibility-i-j-l 0% e1 V+ R1 C. l5 N0 |) b4 h, ^; J
;;i
评价(jjl的评价); w3 G2 U2 a% P, l# A/ k* P
let j 32 P$ @* t' r" j- q, `
let k 4  J& g. ]3 d- ]0 F* a: z7 Y
while[j < trade-record-one-len]
% Y/ q6 A7 ?$ g" H* W# A[; _3 I5 o/ D& A% I4 A" p# \
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2 H/ L/ X3 K- \/ o; A8 v
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)
8 s5 {3 M: E& N) Sset j# ?" R( B5 o$ y7 }' b
( j + 1)
0 i# n. O2 P/ Q& F' V+ X4 Y' @
]3 Y! y- b/ v$ ]. w+ _' h  M
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 ))
0 H  E* a. o$ ]2 I  |: V0 @7 J$ m
$ @5 H4 v0 Y$ Q9 w- a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( \$ p0 A1 ], `/ A;;
及时更新il的评价质量的评价4 C7 ~7 B$ e7 z- I4 L  r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 _) v9 j9 w0 f+ D6 W+ o
set l (l + 1)7 O3 K# Q& D( {
]
3 N" C  ~: X8 C2 H5 F7 qend
5 ?, T# g! l  `5 `3 `  T' h& F3 ?$ I
to update-credibility-list
( c6 R% R3 [: z# v# p+ M7 b( S% flet i 0
1 h8 O% u6 B- _  Nwhile[i < people]
0 `  F" X5 H" {  Y[
( `9 O6 p. |5 _: B" l; ^  Ylet j 0
. S' g9 c' b, _1 c" elet note 0* y* C+ T/ t; `' x# T
let k 0
7 L+ n  B- @7 @4 w3 [;;
计作出过评价的邻居节点的数目
1 U3 A% `2 I* }) U, s0 Hwhile[j < people]
2 |, w; f$ @5 h: A% N[2 r0 N$ |9 d. o2 d9 l
if (item j( [credibility] of turtle (i + 1)) != -1)
9 @/ Q3 U/ c; n) e3 q8 u) k/ C( S;;
判断是否给本turtle的评价质量做出过评价的节点4 R9 C5 Q' D$ S! y
[set note (note + item j ([credibility]of turtle (i + 1))), x; V7 j3 H' R: p- f6 o, S
;;*(exp (-(people - 2)))/(people - 2))]
. G& o4 E: M" t
set k (k + 1)9 }& z5 N# y: h5 N
], }2 w' Z6 J4 X5 Y
set j (j + 1)
0 m. S$ i$ T  F9 N]
6 e; s4 ~. x) x5 q' s7 hset note (note *(exp (- (1 / k)))/ k)
( w( S8 k4 a- c* b3 yset credibility-list (replace-item i credibility-list note)9 z: z: f0 F% t) X
set i (i + 1)
  Y4 D& m6 r& J% D, h6 K# z]
8 L- }) M. }7 s* Dend
' j7 g, e9 [1 P1 ]+ r  a
2 O0 c/ j& N1 w* O0 K. C5 M- qto update-global-reputation-list/ |5 ~# L$ P  ?/ k, E
let j 0
5 o% F& H3 j2 i. s. F4 Bwhile[j < people]
- ]  [1 C  b% [[/ d- H. b& d  q+ b/ Y' q0 D
let new 0$ {' R8 m! Z& A+ \! O. ~& [
;;
暂存新的一个全局声誉2 z2 k' z/ S; P0 w, ~% p# M) q& z
let i 0
. Y7 P, h' s8 [2 _2 E5 Y/ E" Vlet sum-money 0
/ F0 O: s; ?$ {! [, Q7 w! Q$ Clet credibility-money 0- I5 g/ S( _' O; }# e
while [i < people]0 x& ?$ P0 Y- l- y. S
[$ b8 ]3 O& z( R; p5 H2 v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 a$ e( T* p- o# T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 \0 v. P0 a9 ]# O# {0 M3 a* l4 Q* [8 hset i (i + 1)+ g. R$ R4 {- k) O. O7 L
]
8 _. y! L# V) K$ C5 ^9 nlet k 05 U  w' U7 c6 w" e! K+ X
let new1 0
6 x- \/ e* P* O" G/ n! O5 awhile [k < people]7 ~, ?8 R; @. G2 w6 _, s
[
$ r# D+ w; }% `- j7 h+ D* z9 t2 Iset 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)7 _; F3 p  {. r! k' X" g
set k (k + 1)
  i9 @. r9 ]" [. T! q4 l" V]
8 l& b- l  n0 r2 }1 {3 ~, T4 ?, ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ r1 Y& }; X3 }' S/ m8 b2 F- x
set global-reputation-list (replace-item j global-reputation-list new)
  X  O* ]3 o1 B; ^. Kset j (j + 1)
6 r1 i5 G$ T% M* E8 b. A7 E7 F]
/ t, V# {* [5 mend
, O6 P2 M* g* F8 b( G; @( T' |& s8 H$ X
; l0 D' ^/ F$ Y7 Z3 r0 I
/ S. v- f4 t' @" ?
to get-color* c  W6 W2 G. x+ k

0 q- m, K9 o" i0 Lset color blue

3 \+ c; B( O" X  H  ^5 C" pend" t8 V0 [( o+ `2 q2 X; T

+ A! a3 b. ~. `  L; Ato poll-class% I/ l3 B+ h: N) ]2 q, u; L
end' U% f8 z" }( p; s, |2 p# m% Z5 o( R4 Q

7 C5 X' H1 K; v6 h" M$ ^9 Gto setup-plot1
$ O- o! d- T  q: R% t
: E8 y4 x6 ~1 K2 p  H; ^set-current-plot "Trends-of-Local-reputation"
7 l+ z# }9 |- j1 D9 v* }

8 Y) ?" P6 u3 W$ H& i  Yset-plot-x-range 0 xmax
3 p3 {2 K+ G1 X4 W. T1 p' V

4 O3 h6 G$ u: `% p. t4 M" L# @. Yset-plot-y-range 0.0 ymax
& F" O& z& ]# k
end# ]) v" b: a$ l4 v& {

2 d) U; l# \& l4 b4 g- |to setup-plot2
3 R, d; L0 [+ I1 Z4 `+ A$ B/ z% G) s# i& k/ C+ z- S
set-current-plot "Trends-of-global-reputation"

4 b4 @+ [; @9 x8 ?* n+ l! G. P" d, F& N4 ~0 h3 Z" O4 r) }
set-plot-x-range 0 xmax

) T6 ~8 E3 P# M, M9 W2 B1 s. Y7 T5 Z  y9 v( N
set-plot-y-range 0.0 ymax
$ M$ ?8 V" S' j8 ]  T7 t
end
& F8 N# |8 P' {) w: X! Q1 U0 {! `
2 {5 `) r  G9 d, F9 qto setup-plot3
& k1 R# p4 O; r2 L
  J5 A) b. l- Jset-current-plot "Trends-of-credibility"
+ r+ M$ ~+ w8 Z0 z9 X

4 e7 m) u# H' j5 B" Z8 ]6 \set-plot-x-range 0 xmax

1 B: N6 ]. a  v( ~; ~
$ [9 x. {! P4 |& t* ^, Dset-plot-y-range 0.0 ymax
8 ?. E2 r7 _+ y
end9 u& O, {# k. L/ @" J

' c6 O; B; n& y; s3 s: I( ~0 sto do-plots
1 o8 k8 w! N& Q  Q, w) Zset-current-plot "Trends-of-Local-reputation"
' F& n6 n1 r: r- h. g& B& Aset-current-plot-pen "Honest service"% A* Z. Q, ~! o* k! E( p5 y
end5 t( v9 J6 r! `" {& _0 \9 j
# Z3 G" u8 K8 [6 g8 S% U/ 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.0 ?. O: \! R: a  M6 H' i. M, z

$ ?8 q/ d4 m, W- u" n$ y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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