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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 R) h: S3 Q/ g- J' T. Tto do-business
: x7 `$ Y2 c4 Y7 |. _ rt random 360, {$ E8 ?5 g! m! _( ~2 d+ R; }
fd 15 V( o. a* [4 L3 W/ e
ifelse(other turtles-here != nobody)[
8 ~2 }" o* x( a) N- F* c- I   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
; Q3 W- M+ R# _9 |7 h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 T% N' z- A: ]" z+ @5 B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& a+ d9 i1 g: _5 D   set [trade-record-one-len] of self length [trade-record-one] of self* _+ b; q! D. V1 T! Z3 Y- R
   set trade-record-current( list (timer) (random money-upper-limit))& t- @4 u& ~) U
9 e/ {  O, x; v) j; ]0 @
问题的提示如下:
8 j) ~0 d$ G$ P
1 y0 q, g" i0 g# Uerror while turtle 50 running OF in procedure DO-BUSINESS
3 t% O' y- Q" _/ a4 X6 d6 u1 L/ Z- ~  called by procedure GO
, A5 K+ h: A  ?# tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 t- i# J6 N7 L9 d, |7 a
(halted running of go)# J2 S# a3 @; G( h9 _$ N# j1 O
8 \6 w) N3 o7 Q, P% D
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~~8 s0 }4 s3 k6 x. }/ T  X1 u
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
9 }. w) {/ N' O8 D1 l+ M+ y' `) h3 Iglobals[- O. \: J% q% ?) O, v% [
xmax" F7 l. K$ A) V  _2 V) F
ymax
" [% ]/ V3 ^! o' mglobal-reputation-list
+ p+ k, C; `- H7 C, ^3 }3 X7 f: t( Z! X4 ~
;;
每一个turtle的全局声誉都存在此LIST
% o# U* |# V; qcredibility-list
9 @: H5 ]/ o, F( z. m- I. `;;
每一个turtle的评价可信度
. r" o+ r0 J" L( G9 r0 Zhonest-service- U1 y0 \5 O8 ^6 \
unhonest-service+ S; ^" q/ d7 G7 t7 b
oscillation
0 [; Z; X+ {) a' ]7 f: N; L# ]rand-dynamic
* \; y' v2 Q0 ~& v: Q]. X( c9 n; ]' Q; m( _( d
3 O% d6 ?$ T- e+ M4 ]; }
turtles-own[4 `( Y" m% h- V# `! _! `
trade-record-all& O: T2 Z8 O4 ~: h% {
;;a list of lists,
trade-record-one组成
5 e. a% C% S$ k& l9 o+ A; vtrade-record-one' h! ?8 Z5 s( z( S7 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
7 `7 O8 v' z0 T* `! `( S( Y8 `) Z# s
;;[
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]]+ ]* Z  _: h; @
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]$ h$ n* {( L. K$ s5 N1 d6 G
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
& G& e  d# e2 f% uneighbor-total% G2 {& `! F8 D/ z) k8 l6 }0 C, x
;;
记录该turtle的邻居节点的数目
1 Z$ N  n) ~4 Btrade-time
% D! ]& u7 g. w, M3 a9 J2 C: y;;
当前发生交易的turtle的交易时间9 g; S! o" g9 p2 k# W6 t
appraise-give* W: S& E; t# k/ T6 k7 q* V
;;
当前发生交易时给出的评价
4 L0 M, e2 M$ happraise-receive3 n, ~# V& d  d- V8 m
;;
当前发生交易时收到的评价9 w# w6 ?& y: U. j+ Z& O7 u% I2 I+ g
appraise-time' c- b8 B! ~8 K4 M4 Z  ^2 A1 j
;;
当前发生交易时的评价时间
6 M: S) ^1 p  \. H/ I  ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉: K. g" C( [' ]! |
trade-times-total
& O5 o. W" V/ T; l;;
与当前turtle的交易总次数
  T2 n6 ?6 u3 E5 otrade-money-total
7 q, T) y2 J4 u6 j( O;;
与当前turtle的交易总金额
% S" e( y9 Q. C- B0 ^' K7 _4 h/ Ylocal-reputation
' A% D- W1 e  O. |; p, Hglobal-reputation1 S/ U' P# B# h/ v3 f
credibility4 z' d0 i9 K: ~/ t
;;
评价可信度,每次交易后都需要更新
! a8 A- H% ?# c5 n$ ~% Wcredibility-all
# }3 q( O* k# e+ j) l+ r;;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, W' w; I$ ^7 y" i
3 E: K) E: P8 I, @
;;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& G9 \5 \1 W2 k1 k4 [
credibility-one, ?1 q# Q4 C* L% h- U9 u/ p( {
;;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% t6 b' `" b7 Q
global-proportion4 r4 d: l' e, {& O" C! O
customer/ c4 G  E! s  ]  z6 S" N
customer-no
* X9 P+ k) x! {/ K# D2 |# W' Ttrust-ok! B) R  b, _+ F
trade-record-one-len;;trade-record-one的长度
6 a! F+ |% B4 Y, X]4 O, z, S6 B% c/ o

: b) |# X5 L$ L( D. s. u;;setup procedure
: \/ J1 p3 t. \# e8 M( U
% |' b, `3 T; ~- @to setup4 L1 }) j- A& l6 `* ?4 @% d6 z& B
; j, F. j+ g& J8 R* a
ca

6 u2 N" C9 P8 }9 b6 E$ l/ W+ @5 W1 l7 r: ^1 q
initialize-settings

3 |- N9 t5 a5 z6 y. b
" W: l3 H# k( U: ^, Kcrt people [setup-turtles]

  Z" Q+ v/ f; {" G$ F0 d
+ a+ Q/ u8 q. H( P: ^reset-timer
9 v) L9 M( z4 |1 N8 d. t

9 E' B4 k8 x! |2 Q! f9 \, ?poll-class
( A3 M. q7 G0 d
7 v( u7 u& G/ d$ Y4 @# W
setup-plots
2 r+ \2 Y6 [3 m3 Q* n# ]

! x" j$ @9 A6 V+ Pdo-plots

  a7 B# C  J- ^$ I/ m" p/ q  N, `" @  Uend
7 F9 [. X8 {3 a2 f: o  Y7 P# j2 {. ?2 N
to initialize-settings1 P0 b4 M% E( r+ O/ u
+ B0 b! R$ r% \: z" K- }
set global-reputation-list []
% a! S: N6 M& P4 z) x" b
% m5 c" z& _( y3 q* _# g. f  e
set credibility-list n-values people [0.5]

( x% p& K) P  v$ x( \. p9 U0 O& ~4 }* g9 _9 C. C* O
set honest-service 0

5 l. ?1 B& @* [7 |: h( B. Q* F
0 Q8 j1 n; d& |6 d9 |" z! lset unhonest-service 0

8 Z& z$ H. L9 u2 T5 F
: {% q( w2 d( D5 W4 Mset oscillation 0
7 z4 A( j/ @6 I& \* G5 }/ z# M

: G. E7 r+ ~2 b6 w+ d5 }& G8 Gset rand-dynamic 0
9 Y/ d8 E* Z; Q; n* c
end' d( x# @" {6 x- c
3 Z" v! l$ l& j; o7 j" k$ R
to setup-turtles
3 r' W  R, W5 @) ?, rset shape "person"
5 T0 P2 x* a3 p. E. W1 Q- ssetxy random-xcor random-ycor# @! }! R* M* _/ s- g  f2 ^0 U
set trade-record-one []
% S6 v$ B% G; Y9 y" z

8 u: d0 L7 o4 @$ Pset trade-record-all n-values people [(list (? + 1) 0 0)] % y. M  I6 O! E8 h

" s% ~" X' B" Y5 b( S# t+ uset trade-record-current []. k1 @$ u6 e+ E% m
set credibility-receive []1 L+ B  N6 C+ o
set local-reputation 0.5
# r0 h0 a. q  e/ v  y( \$ d1 W! Rset neighbor-total 0
- F3 j6 e# K# ]" Xset trade-times-total 0
! c0 E# f+ r  kset trade-money-total 0
% c0 C+ o3 E0 G1 h9 ]! O4 F+ \set customer nobody
8 E! ~) z8 ^; ]( B* o/ \# ~set credibility-all n-values people [creat-credibility]) {9 p( d+ Z6 _+ ^" h* [
set credibility n-values people [-1]; N* r4 d% I; R
get-color) c- j" X" t  h$ L/ ]% r  o" Q

2 G: e4 u2 d$ d+ J0 Pend
: t) E' e* ]% r5 v' X+ A8 ~9 |/ f$ E+ {, C7 z
to-report creat-credibility
4 F* t8 s1 d( Y; f$ Qreport n-values people [0.5]
+ u7 x' w$ G& m6 A5 Lend
' x" W6 ^' V" k5 Q* O( {0 z. m+ k$ a; t1 b7 k
to setup-plots0 M: I6 j+ n8 R% z7 q" C/ V

0 q/ }) j  w0 u) }! yset xmax 30
  b8 q: G) H4 M% r3 R+ ]+ H

/ o4 R$ ]) Y, S' y$ Z7 v  xset ymax 1.0

  e/ i  Y' o3 O, ~3 f7 J7 E  r, G' s* H/ c0 G& Z9 q4 N2 k
clear-all-plots

% b8 \/ c7 A* P. s- \; j" A# o1 ~! V/ E* D" D3 {4 T
setup-plot1
9 H  N6 K( V3 d  J
9 r- n3 y9 P% F# R6 w# M( O7 {
setup-plot2

% I5 m' w+ o8 c, T4 `( ?
* t5 C- N5 q- y6 t  n" v5 l& xsetup-plot3
) X. \: y0 F; e9 Y5 L) {; |
end
- |/ s% `' I) K% h+ K( z5 N- L
) w+ a1 K$ E3 l+ {+ z1 {8 Q( Q;;run time procedures" t4 T7 x4 e3 N7 A* p9 H

; S$ L6 n8 S2 I9 v0 d' nto go
; |) o& [9 G8 x) V' h2 u1 x' p
/ W6 j2 a" u$ uask turtles [do-business]
! v* }9 J) v: z- K
end2 F6 B7 @$ N2 }( @3 n; n2 q

' J* _! S) ?* d) B) q1 L  _: b6 zto do-business
: l( v+ ]. `$ ?8 ^# U

& C5 H! y. W+ @- b" e; V9 u: X" {9 F5 }* f. k! m4 v6 z
rt random 360
! z& E8 _8 o, n; ^
5 I! h! I+ ^$ l5 z2 Q9 v: I
fd 1
% H9 B& ?  f3 |+ `3 c5 u

  F9 z3 i3 |" R  f3 M! F# ]ifelse(other turtles-here != nobody)[

+ k4 b$ N6 x. J- g7 O2 Q7 \& Z* X* N! J5 w; C/ B. a' z/ a/ p. K
set customer one-of other turtles-here
- n5 O, y3 t3 E2 f/ G! U" c

% I  \+ u5 u9 Z;; set [customer] of customer myself
9 Z7 Z) D1 j. O: d

) P5 P% ?. [  ]4 a% [set [trade-record-one] of self item (([who] of customer) - 1)1 T$ i- i" v2 n2 v
[trade-record-all]of self8 v9 n5 s- [1 Q% o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 [' ~/ l: D( W* \$ i4 O) M0 N  j: a9 f. h; `/ [6 f4 }
set [trade-record-one] of customer item (([who] of self) - 1)
* V6 l7 U+ _( u) a4 i6 P- f[trade-record-all]of customer
5 O1 K& S) _) w# ~% G* ^# w6 b
- r# N: g* h- r  K  X2 s3 U
set [trade-record-one-len] of self length [trade-record-one] of self
& B1 Y- s- t& _/ e6 d
+ s+ U2 }! ~! Z; p' Z
set trade-record-current( list (timer) (random money-upper-limit))
* V5 q4 i3 w3 `7 ^$ o8 e

- o+ p, u: l; R7 a1 l4 [, Rask self [do-trust]+ d' @- O/ w' `2 u) R, ]8 J' J' G% \) B
;;
先求ij的信任度! D0 `5 ~! U5 S7 ]) {; I
8 v$ d( |, ?; v4 h+ }" E, C
if ([trust-ok] of self)8 {% C! P, @2 Q; J
;;
根据ij的信任度来决定是否与j进行交易[
8 O' y3 t6 [/ c7 fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" C$ B2 a+ W" X4 B4 {( }; Q7 I
) A, o+ ?# b0 B* e
[
5 J4 \* O4 z! y- j, K

3 s" Y& |: B" B, q# I2 N/ b5 Ndo-trade

) ~8 _( G  [: g: m/ k% m( h+ }1 |5 e7 _3 E0 J0 u# N7 D! Q/ i# w
update-credibility-ijl

! {! I! S, S8 E; V# ?% b1 n; W% b1 E. V7 V! R$ {8 Z- {
update-credibility-list0 d/ g: K8 {4 Q9 Q7 P2 h9 a3 y$ h
1 c  p5 y' w" j! K

( p/ e5 o3 f1 J( I1 {update-global-reputation-list

- r4 M  L$ G+ T6 {/ B. k  W/ j; x: c, u  o8 _# ]4 d
poll-class

- {/ w) [" a% p4 H% I2 B  w4 \) |  v
get-color
7 I2 b8 s# F. @+ @4 j$ _8 B
# t2 _9 v7 A5 J+ @1 G! {, x
]]
1 j1 Y0 k/ C+ ]/ L3 K. ^& B$ l0 T) f% n' U
;;
如果所得的信任度满足条件,则进行交易
& y9 v% g& z: h6 W& }
9 `$ v9 K" t" }8 Q! }& C2 |[

  q2 U8 ~6 J7 L! ]: P% R( \4 I: g) I
rt random 360

& l' X# l: u4 i! ~7 a) a
( D" y1 ~8 q9 R1 sfd 1
( X" T- e" X7 E4 X
% }2 R4 a( Q& \( d# v; R" |2 c
]
8 `- I/ e$ ?1 U" W5 \/ v# o

3 V8 Z) D1 b3 v3 |end

( Y) m5 v4 A+ ]' {$ i2 f# R6 ?; b
to do-trust
% K( ^4 k" A+ P: ?6 Uset trust-ok False( N: K+ {1 G6 }* m1 B- u

! ?$ W1 y& `3 g0 ^6 n
1 ]$ A: x- }( |  B( r
let max-trade-times 0
1 S7 w5 E; q$ N$ M/ pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! e. n. |0 L# w2 o, L# v) _8 Xlet max-trade-money 0- L# P2 j% {' Y) r; I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: i/ Z8 u, \3 `) C' klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  l/ s/ k0 [" G9 H% }: e( u* S4 d

5 z! o* x* u! h0 l8 m* a' V& Zget-global-proportion: s. D# m1 ?% a0 V8 ]7 N. `
let trust-value
! R, ?% ?$ ^+ ]' Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ `/ c5 N& b8 U  j. C/ q+ a3 v5 Q+ S" Sif(trust-value > trade-trust-value)
% l" x, M* A3 b7 f7 \[set trust-ok true]
, s/ w5 j$ u2 g+ N$ H* E/ h7 l0 jend
% W) N8 h: D* Z% p* D, @" A# p5 W( ?6 z! D% c' J
to get-global-proportion  n& }$ a3 A6 ]) b4 C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% C) s% l$ k0 U: o3 b8 K9 Z% y! q
[set global-proportion 0]" d( U+ D5 H4 a
[let i 0; V  R* E5 b; e) V9 P! y* t( i
let sum-money 0* g1 L& _; S2 |
while[ i < people]$ u1 e3 b& e* B& ]; v9 W6 s
[7 b/ z4 b* ^  l2 m1 w8 t
if( length (item i( w1 R0 d9 s1 D; z
[trade-record-all] of customer) > 3 )
! |. q1 K: g9 ?  Q; O! f! D
[5 M% J4 b' u3 |5 u8 Q5 S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( f$ ^: p3 ]9 {]
& ]: U0 p+ c4 N0 ?8 \]
, {0 `( G1 x( o4 b0 u% M" Olet j 05 Y6 h/ g4 Z. G
let note 00 R8 i* ~2 x& x( ?* ?# U
while[ j < people]2 F9 F* @7 q6 |! z( @/ A) z
[
" P: ~/ V/ f0 l9 v% A+ N) ]8 a5 iif( length (item i$ C3 c/ x2 |& g; V! u3 V/ Q% V; ]; Q
[trade-record-all] of customer) > 3 )
3 _4 H4 k& e" ~. C
[# B& N% M( T' S: \/ X3 R1 h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 E: S  d5 ]% ]) c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" Q! e. h0 q/ K7 o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 {: M5 Y. x8 N]  K/ Q* c: w+ u$ W( r% P/ p( ~
]( L- h* n4 w+ G. Z# A! |
set global-proportion note
0 {  `# g1 @3 L9 I5 @5 e0 {1 u7 L- E! E]' i, l  r0 u- q% X" f
end
2 s' r( g2 v2 ~% K( p  v
0 n) Z$ k8 U$ @& H# u1 J( a# N: _to do-trade1 B  d( l2 W, M& ]8 o8 q1 `0 r
;;
这个过程实际上是给双方作出评价的过程
! \5 |. m7 T' Y0 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 A5 P' c  n, N! A/ Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- M8 M% N9 R% B, n, E
set trade-record-current lput(timer) trade-record-current
/ ^( o5 n7 s: Q) B; z% [' r;;
评价时间/ @5 W! F6 o* ?5 G1 K' d* Z
ask myself [
/ j# x) H6 M- i# F; ~update-local-reputation7 y' k7 S- q* J) [9 m
set trade-record-current lput([local-reputation] of myself) trade-record-current. k* {9 O4 m( c% W: ]
]0 a5 E+ @' \0 J5 C# d# K2 e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 S# C5 H# r- M) a% F- g* G! ~
;;
将此次交易的记录加入到trade-record-one
# o2 v3 {0 c& G- Jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* z1 t7 _' g) V1 n; Flet note (item 2 trade-record-current )
% \* w: G% d4 ^9 B' Pset trade-record-current. x, i4 D# ~* k  X* d0 l9 [0 q
(replace-item 2 trade-record-current (item 3 trade-record-current))

, g4 r# }5 m0 [  j  Wset trade-record-current! d+ P# w. A* ^- i+ T2 X0 V* S
(replace-item 3 trade-record-current note)8 C- @6 Q7 H6 D

5 ^1 Z  D. R  v+ j; G+ h
" a1 A. w# g) u: S& J! D6 Z1 g
ask customer [( I4 ^8 W% h, q
update-local-reputation
. ?, y' h4 ?- G6 x4 Y1 D: ]5 K! bset trade-record-current
+ l% j3 @6 i1 Z! r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* c' e8 Y( X, r- T
]4 A- X, n  J! v4 m# F' |

% e& F8 @- r- J- o6 \5 w, m8 ~
8 S- s- Z" v0 a( O1 K) w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 d4 d# @7 ]/ l

7 O1 e( l5 g1 j! ~- {, ]; B' fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 ~3 W& _5 A" @* d# Q) t;;
将此次交易的记录加入到customertrade-record-all" F( a  c7 T7 h9 I; s0 [
end
. c# b! V# f3 p; t  d6 {* ~9 s5 d3 L4 R' T$ r
to update-local-reputation
' l% u7 ^2 {' S( O  P) _set [trade-record-one-len] of myself length [trade-record-one] of myself
( P. i* [! K6 u% ^: [0 h
" n6 ^) f  J3 b. D4 w, s
$ P. w0 i0 n$ q( G4 n;;if [trade-record-one-len] of myself > 3
8 i" s1 k* n, u5 g! p/ V
update-neighbor-total
, M' K6 Y, H' [" u& L" j. A* D;;
更新邻居节点的数目,在此进行6 ~9 }5 E3 N" k! P" Q/ D
let i 3' e: B* i7 G" n- l& }. b
let sum-time 0; k' h' L+ e+ s  z( \. c+ q
while[i < [trade-record-one-len] of myself]: y2 m1 M7 g; R4 K
[
; [/ z8 R& f2 m, X; [  qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 |( J1 ?) q, b2 ?. kset i
5 X$ ?$ _" [- n  g& u  _/ m( i + 1)
4 T# x, I7 B3 v) e5 F8 X
]
8 N8 Y# F' S) glet j 3- k: {* ^" c6 w$ N, R+ @4 u
let sum-money 0! K; ~+ l# I- I7 N) H. t( l
while[j < [trade-record-one-len] of myself]
4 H$ e; E9 r. I3 p* @: p: k6 e: j[
- w  z* z9 v3 \3 D2 ^) v, Z6 g/ 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)8 s- h- K" w8 ^  U) N1 M# O
set j
8 y  X. S6 y3 L: i- M. y( j + 1)

0 n, w* Q' j1 E2 O" u7 `, x]1 n' Y2 X& o/ T, k  \
let k 3
+ O) q1 G/ B6 O( l) h9 f5 y% H# v3 ilet power 0* e3 M- g/ X0 H/ P! p, g- @
let local 0* |9 `# s6 B: y4 [3 P/ ]* K# V$ t
while [k <[trade-record-one-len] of myself]; m% s/ d8 }2 F( e
[5 }- n2 ?; E9 n' ^
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- k8 ~& h2 tset k (k + 1)
2 q! `- \8 Y! P, @]7 i& X7 Q1 b4 h0 c4 H7 P
set [local-reputation] of myself (local)" c: B6 \( H/ F
end: n; ]( G* h* e% Q3 p

' P' A7 K+ [3 p4 mto update-neighbor-total
, H) @; {. k1 f/ j
' Q" j) a6 t7 |& Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], S7 M7 {4 W1 V- e/ y$ l6 U( V. Q
1 d/ {% Y- H$ D4 K6 K

" q9 {! p; C  a6 e8 h  vend
6 D; z4 q7 ~6 S# M
( z& K5 q- K0 K. x/ z8 ?to update-credibility-ijl
% U! S8 M1 E# ]" N/ J: |
- D/ G( W& f, 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。$ X8 q1 g$ Q' I$ j* I
let l 0! l7 J. @# X8 s* u$ g) M
while[ l < people ]# @* T" W; j" 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
5 ?) W  J" o- F, a2 \[
# A; P  b2 E  f3 x9 mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' Q4 o$ `/ Z# e8 s/ u( X1 }if (trade-record-one-j-l-len > 3)
' ]' g0 Z" p  _4 F* S0 B[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
* Z5 e, j. C) `. y5 {) rlet i 3/ d3 d+ {* M: }0 U2 c  ^1 }* s
let sum-time 0
  ^. N  V% b2 ^# x; T, dwhile[i < trade-record-one-len]& p! N  n/ b, a2 |
[/ o6 M& j* q: N( e$ Y% o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% `& ?; X& ]$ Q4 U8 x# B+ g
set i
5 c- N1 |, z0 I( i + 1)

3 E. C# y0 b, U$ X* U! P4 K  ^3 t]- C- L- Y+ J7 w, U, Y
let credibility-i-j-l 00 d3 i& M% u( J4 z! N
;;i
评价(jjl的评价), E/ A5 H0 F8 M1 N% w
let j 3, h4 S6 M0 n4 o0 r/ l
let k 4
2 B  v% _1 O+ C0 Owhile[j < trade-record-one-len]" a0 \% }( Q& t" d1 f
[& B+ ~: U: v9 N# S" o; E
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( c$ d  A5 _# A+ o! _6 a$ P
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)& E. |2 W* f$ y2 F. z: V8 L
set j8 ^5 K  u/ J' @7 \
( j + 1)

# d1 B3 U- W  b2 o2 F. u( T9 v+ n]
# T+ W. p# C5 t7 d6 a1 sset [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 ))
/ [/ e4 D! d" T, \. ~: F" \4 Q( Y- r

& p4 ~6 N, n' \. U: l, W2 X4 ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 x) s- z+ ]5 v/ y2 P4 a4 T& A+ R;;
及时更新il的评价质量的评价, p8 L0 F$ @$ |) B) @: Q" j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ a: l& U! g, T
set l (l + 1)
. Q: H1 B) \  g/ c3 H; c  M: ?% n) y. ^]5 E, u" \2 f# k/ h
end
$ X" n1 |" }) C! f  m/ p; Z/ ]  N+ v; r7 \6 A# U
to update-credibility-list
& e' F* l, n  B, Q& jlet i 0! g" C0 o  Y7 \
while[i < people]* B5 A/ R* M* k
[3 T% L6 P, g2 N! J/ k4 f
let j 09 L1 p" ^3 D" z  k- C9 D
let note 0+ b( s4 @+ g% `# I7 t( W0 \, M8 U
let k 05 b% ~+ y2 T: u; K+ Y
;;
计作出过评价的邻居节点的数目
! K+ x& Y& M, n7 V* j' W: f$ iwhile[j < people]
/ B; C8 _% _' M; X* k[) R+ Z, j6 K. U' U# A% M& _
if (item j( [credibility] of turtle (i + 1)) != -1)  E% e, O& l' o9 c6 i0 ~$ w0 O
;;
判断是否给本turtle的评价质量做出过评价的节点
: s7 E! ^0 f6 I- T; k# n[set note (note + item j ([credibility]of turtle (i + 1)))
* P; ^, |7 \( w1 I- e% l;;*(exp (-(people - 2)))/(people - 2))]

; Z* L& v; i7 k4 b$ c4 _* ^set k (k + 1)
& z( a8 {$ N9 O& w$ G]
2 [: ~% X) R  S7 c& ^7 Nset j (j + 1)
+ O* q1 H9 a9 Q( K/ F6 O]5 G$ {+ B2 R5 ~1 O6 `
set note (note *(exp (- (1 / k)))/ k)4 d! ^- _& y' e3 }" c
set credibility-list (replace-item i credibility-list note)
3 U9 \' Y! _# m& ^% i# z( xset i (i + 1)
! b5 I; i# F1 t* \# Z, L]
8 R3 J* D$ a1 @end
% ]' j* X+ j( |' C; l. `4 Y, N# L  V' r# m9 J7 z  v! m1 j/ r7 C
to update-global-reputation-list1 A- M6 L2 p. Q( H0 F
let j 03 @# N+ @# E$ N, f: z+ A
while[j < people]
1 I  q3 Y* b* h2 S% d+ o[1 b$ q9 [5 {) z- _5 @1 @% M5 v
let new 0
" [0 l1 p  M" Y5 H;;
暂存新的一个全局声誉
5 l. o% k7 W. J$ tlet i 07 ]% e) N2 J+ Z6 J+ {
let sum-money 0! u* ?( J& v/ ]. q
let credibility-money 0( Q( H  ]6 i7 m: j4 }5 Y  e  M* U+ M8 H
while [i < people]& x. F" t2 a* h. \
[
8 V  T' Z$ g2 }9 x7 a$ \& `: \, Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' d7 z4 g$ j, S. q3 T1 z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ t& O9 r% ^9 p0 q4 a7 c  r
set i (i + 1)
8 ?$ l; ~; Y2 C" d# e. J% f9 B0 ~]
% i  ^% \) i3 A( L. C1 }, P( ?let k 0. N9 @9 C+ o4 Z9 {3 W. I& B. n. c
let new1 0
5 d1 N4 h8 X: d8 Zwhile [k < people]
: V2 C! h; }9 q" v0 V9 F[* F8 s$ k8 A- L" O
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)- s# Y! t3 [) b1 P7 v: E
set k (k + 1)+ s6 @2 ~* P) ~
]
8 R) ]8 j! S' dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( y$ f8 x. e& O; t5 D
set global-reputation-list (replace-item j global-reputation-list new)" b& F) O' k: s
set j (j + 1)
- K' P5 e2 k/ u) w/ x6 ^" g]
9 c' C0 X4 x* Qend
' a1 j8 q' H! z0 A) j4 \/ z) l) A0 \1 ?5 E  R/ P: e! Y0 V

* r4 }2 V" p9 v/ J8 V" |0 a
8 f2 |' S- ^. ^( \. Q+ ?' nto get-color
8 {6 G; M& d# v) C- d8 X6 k# E+ ~! p" M% `
set color blue
: c6 A& a! c- l3 [) H( L
end/ d7 ]$ t5 c; c' g
* S- @2 W! V: A
to poll-class
$ S2 Z$ Y4 s7 Nend! n) q! m( E1 X% k* G
$ i$ `( G, Z3 h8 r
to setup-plot1
- O6 [3 \  V, a/ u7 {) A  I
! e5 x# J( g* C8 R0 J7 xset-current-plot "Trends-of-Local-reputation"

$ T% h! Z: K4 B1 {+ |
( c# O  M: l/ t$ O% n) Eset-plot-x-range 0 xmax
- O- I5 G7 b' q2 Y+ {+ s# A

  y, o9 G+ P# U: n/ Kset-plot-y-range 0.0 ymax

3 f: d; t: I( J3 Z; d& j  v: Gend
7 {. e; H7 X2 v1 }" m
2 @" i3 S) k0 z! }) dto setup-plot22 J+ r* x: I: R3 }" G- ^

6 m( J' S# A8 a$ c( c7 k* Z* _  Mset-current-plot "Trends-of-global-reputation"
* o: J4 g6 c- ?/ y# {

& T5 G$ H! K( H4 d4 zset-plot-x-range 0 xmax
+ Q: O7 t4 T$ F5 Z$ R: U
% x8 n9 n5 \. [$ t
set-plot-y-range 0.0 ymax

- a" b  p$ u: O2 f7 J$ d) f7 uend  M) `7 [& i  w1 E1 y- k$ t, \

! c4 k5 e6 K+ N0 q+ q9 m$ d3 @to setup-plot3
5 M; \$ W8 r0 m  p9 ?
8 T0 D2 j$ u* a; i9 r5 uset-current-plot "Trends-of-credibility"

; c# }; |  [! N  e4 t* T3 U' T. V7 K* W9 c! M" z1 v
set-plot-x-range 0 xmax

, i0 H' V* f# C& k  C2 h
" p3 @. v: N. Y- Qset-plot-y-range 0.0 ymax
/ @1 T" _4 Z6 e
end5 _& e5 D! `6 K; n. b/ x
7 f" S' p+ T: L! w
to do-plots# x2 i1 h0 v  Q7 S) W* [
set-current-plot "Trends-of-Local-reputation"+ Q1 D' N/ p, V& |8 ?
set-current-plot-pen "Honest service". ], F8 e& p# d: \
end
0 _6 i' D8 ~7 l4 m0 H2 X2 F& m. v0 T& S! A
[ 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.
( Y2 e5 U" Q  D* y' t% Q% i) d3 I* v/ R% h5 q) h
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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