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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 @9 W6 X) x  ]" A
to do-business
' E( @* F" X4 u8 e rt random 360) [3 a# I  {5 Z5 Q! G
fd 12 j- p6 [4 q3 T4 m0 f" y- s3 d- o
ifelse(other turtles-here != nobody)[
1 G5 }7 `- Y- l: N   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.
' a, {- m! W* X3 T2 W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : M2 M- `9 t* v3 e4 F2 W# O' n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: v% |3 O9 h) V# t   set [trade-record-one-len] of self length [trade-record-one] of self
1 T! ^" N+ B: q4 z& O: r9 [   set trade-record-current( list (timer) (random money-upper-limit))7 M( g8 \" Y/ T9 ]3 u- L' J0 |
4 D% V' y( Y! z- }4 p# A( h- p
问题的提示如下:
! P. u7 M" s* ], m" M9 f" p6 \; F
error while turtle 50 running OF in procedure DO-BUSINESS, Y( G2 V8 C* W" R. n0 {1 d
  called by procedure GO3 r3 t  f5 F% j  }5 P1 O2 y# A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* `/ @- I6 n' m
(halted running of go)
- J+ c; e2 D# u' G4 @0 ?$ L2 o' W! n7 y" R
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~~+ B  Y+ g( a: l% P  L. J" R
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
7 i* A; X; K5 oglobals[
# [" d2 B4 y5 `xmax4 G- q3 W" A' p: W, |3 q
ymax2 F( Y' Z( p3 [& R: Z
global-reputation-list5 A8 I8 a( j8 U5 D

# x# }- t$ ^% b1 Z7 K& }5 Q+ n: B4 t;;
每一个turtle的全局声誉都存在此LIST
7 o6 _; L6 N  q% |2 ccredibility-list
; J' Q  z- o3 t1 U4 Q;;
每一个turtle的评价可信度$ P! n; j8 z; d+ }( d, f: g) T- p
honest-service5 B6 W  w" p7 I. \
unhonest-service3 u2 O9 n: \9 F
oscillation
+ ^4 Y& D5 [+ m, X8 Qrand-dynamic; R8 C' C9 y: H* a  G' U
]
8 }# f' e" P$ n  K4 {4 B
. a% j7 w: r9 v$ g  w. H) y2 |3 bturtles-own[
6 q: m$ g2 L! K3 g% x" E5 f* \trade-record-all' m' e0 k- ~4 Q. j, O5 y
;;a list of lists,
trade-record-one组成
' u$ S1 B. C' C. J# Utrade-record-one
, ^; [& r# W' o1 G/ f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& R. I3 A: ?/ h5 v" z5 Y
5 J) m$ a  O; n;;[
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]]% N+ M5 }2 |8 ^4 P. m! @/ l$ R* k
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]
  E; l4 ^- s$ mcredibility-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
7 M2 ~: `* H$ o' L" Q. G* Xneighbor-total: f  Y3 H! ^. L# d0 ?2 E
;;
记录该turtle的邻居节点的数目
( x! T# x+ M! @trade-time
. w1 a# e! m0 W4 {6 I8 D;;
当前发生交易的turtle的交易时间
* E% C( K7 B2 [# t, w2 E* j0 iappraise-give
/ x1 t: r7 Y2 B;;
当前发生交易时给出的评价$ z- S, O# y' [2 o1 J& f
appraise-receive! c5 l2 b) [7 L+ ?* g
;;
当前发生交易时收到的评价- n% s" }3 S6 M7 O) {
appraise-time
0 y" _! M7 u0 P; T;;
当前发生交易时的评价时间
# t; S0 A; B! Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* z. R+ u6 @3 [5 L0 l" b$ U) _. itrade-times-total
3 U# K5 X) F9 ~1 N! g, I! d6 p% p;;
与当前turtle的交易总次数- p% R# I4 |1 }$ D
trade-money-total7 C, u+ @! d! U  O% C4 q' a9 |' N
;;
与当前turtle的交易总金额
7 A. K9 A5 N1 H% e& x  alocal-reputation
9 O2 _! f  l8 L3 L* Nglobal-reputation
0 m6 R5 J1 y3 Vcredibility
) ^" w: W6 Y1 @;;
评价可信度,每次交易后都需要更新% `2 B1 D) H3 g8 X. X% N, n! Y4 b
credibility-all
! c7 K9 G% x0 @6 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7 I7 w& S1 Q7 ]' `
8 N0 l( Y4 @9 r9 P  z; {: C" ~
;;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% S% w- @5 q; S
credibility-one
: ^9 B) O- x6 M;;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
2 o2 W: ^' r+ a8 o  q1 b1 Z. Yglobal-proportion, y+ P2 _6 _2 |; g1 C4 ~
customer2 {$ D$ K0 Q. \7 M
customer-no& i" o, S6 B/ q0 m/ V/ M$ j; U
trust-ok
* x' ^7 n/ O) z, X& Y1 rtrade-record-one-len;;trade-record-one的长度
+ L- B# V" Q1 T$ ^0 |# Z' G]) V+ ]) X: U" d6 O
( E. B" y% J4 w, J+ S/ Q+ w
;;setup procedure
# m! w9 c( r' o
& |/ f! e+ i, W! Ito setup
. m0 G5 m6 e8 b3 j7 k4 ?0 D8 V3 Q2 {7 O, H, u) _
ca
3 K+ Q9 U  X4 `  \8 r/ O

4 r7 Q; w( R( i* j/ E3 ^+ iinitialize-settings
5 @" \' U' U) \' z
3 `/ p9 u9 a& j( h$ J1 k% t
crt people [setup-turtles]
. D! {5 `7 q9 _: [8 O

4 b" U7 W4 G6 @0 c1 Y( D1 _reset-timer
1 N4 W& I* d- J- Q- \

5 |$ A9 ]$ W' A" bpoll-class
5 x2 p( ?/ I/ g  H- ~
" N. f* b6 i9 I& c$ G/ e  x
setup-plots
9 i1 W5 W( K. A6 F+ B- T4 h0 F
- N6 U; O; D2 G; e! E/ K* ^! x
do-plots

2 j. @+ z0 T9 g, d: Pend' ^$ ^; Z/ s; o8 v$ w
, {2 h: j& B& B8 L% H
to initialize-settings
) x0 T& `3 {# D
+ o5 N. f% G: z8 P' Wset global-reputation-list []
* U2 ?4 I  c2 q  P! P" |  N

' G5 v) }6 m" u% aset credibility-list n-values people [0.5]
2 N. j  f3 J5 n3 a! R
7 _! e! G- A5 i! R4 M6 W5 \7 X5 m, @
set honest-service 0
/ ^% K3 p) ^8 L6 e  j/ b8 ~
0 \9 L( U( d( r! D- I* [
set unhonest-service 0
9 L4 Y! |3 ], n' N

& o0 H) F/ o% T1 aset oscillation 0
# ~) G  V+ D  _; X7 v
. e2 |  }* I' Y' D/ C5 s# F
set rand-dynamic 0

6 L" m1 O3 I% g& pend; t3 d$ m+ P, G& h5 @( e' s* U

$ e( n( `0 @2 M# s" V+ e. j2 pto setup-turtles * z; j1 I& z/ T2 B
set shape "person"
( V7 B! S* Y' S" t" y8 M1 Dsetxy random-xcor random-ycor% l% c. c- L2 O4 G3 G, r
set trade-record-one []
$ J/ p; j1 g5 L: T% a2 W
* A' t% \; P9 L( O5 L5 a
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 O/ i' x. i9 a. G* H6 T3 ^

4 _& [/ b) o6 t  }: Bset trade-record-current []: X! z. [  I5 q2 W
set credibility-receive []& p. g- m: l; m
set local-reputation 0.5
: Y# ]* G* f% ~$ w% e9 f6 H, Nset neighbor-total 0" W3 b- ~1 v% N
set trade-times-total 0
' g/ I+ q( \- }6 ?set trade-money-total 0
# P7 m, N8 T+ Zset customer nobody
$ P4 @% ^- R* N8 Y+ Aset credibility-all n-values people [creat-credibility]
6 X8 G* g0 L. H  g& e* aset credibility n-values people [-1]
. `! e; J/ z- mget-color* q# g) f6 \6 p+ ~9 ^' n! ^
2 ?4 \5 S: ~% b4 u/ A
end
2 I- L  f; m3 a0 K5 b$ s3 d. z" h; u3 Q) I( q( R
to-report creat-credibility
) {( A& u$ q1 `  v9 Sreport n-values people [0.5]3 v) a4 e9 A: F6 ]
end5 [: d$ `8 O- U
  Q. s; U- l' N8 N# j% A) J
to setup-plots
; n6 t5 s% Z1 ]# P$ D" R$ h6 P* V) l/ w5 i
set xmax 30

& h4 K( G- E+ j
7 n6 G& h- ~# u- l" ^1 ]( eset ymax 1.0

' @9 A1 ^3 i: W6 p% P! r0 w
2 H5 \5 d0 r0 \" X# a3 g/ Pclear-all-plots
3 u, O! D( V8 a3 ~; e
/ p: Z9 S- l- g  {, I  L/ n# C+ B0 h
setup-plot1
" h9 `# F' S$ ?2 z' A

7 L* e9 X2 p% N% Osetup-plot2

+ v: X) r4 c2 H
# q( A/ P1 w4 e! X7 A3 Ysetup-plot3
$ T, |# T/ I) k( E  [  m( K1 D' O4 Z
end
- E) m& ]. K4 }! H) ]2 B0 {; F3 h; z0 _# ?  Y, z
;;run time procedures8 t4 m* N% e) b; [7 o* r
; I3 i4 R( j. U3 \: b, C
to go
. x6 F) H8 I3 i$ m; q
# [  Y$ G/ `7 o% U: g$ J/ u7 Bask turtles [do-business]
7 R6 B  r6 s2 ?. B4 p8 x
end6 H, H3 J1 p" n- r: O

. r) ^7 J; i* v! m5 m. o! Lto do-business . k3 T7 P  R/ C! q# ^
+ \6 T8 z# K/ \' @

/ S6 X" w9 K# N7 U' u7 G9 L0 Crt random 360
' i. i1 t8 x: e

9 i) [& N1 y; x5 K3 vfd 1
+ e/ t1 P4 c: m% d& o
" G# h7 F1 r5 _3 Y: Z
ifelse(other turtles-here != nobody)[

( @0 C/ F/ M9 d4 e( w
& Z9 A; g: M& g3 e1 g1 P, iset customer one-of other turtles-here
3 Y# v8 Z2 u1 r4 S8 B8 H
: e- W  ?( p  X5 u
;; set [customer] of customer myself

0 S5 \5 L* t' s/ p! C) B$ c- j% M8 A7 O' V: O# r: h
set [trade-record-one] of self item (([who] of customer) - 1)
, X% j# M7 q7 M3 C+ N7 K[trade-record-all]of self
$ @+ q( b7 t7 Q& H" ?  c' O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 r5 Y+ r3 y2 N- d- q: R: H# ?' D
+ @) O6 Z: o; o5 d* fset [trade-record-one] of customer item (([who] of self) - 1)4 _/ b0 g- D0 L4 s: U& P0 [
[trade-record-all]of customer

4 f! G1 x+ M# e- L" V
! h2 A8 ^% J" i! u! ]/ ]1 }set [trade-record-one-len] of self length [trade-record-one] of self

8 j# c4 i) U! |% }
# Z; _& R. q) I  oset trade-record-current( list (timer) (random money-upper-limit))

; _" B4 t9 u3 W$ t0 v9 Q: t# q. H0 S; U1 T4 s. b  d/ _' `1 G5 b
ask self [do-trust]
1 D+ ?9 W# d, t: V;;
先求ij的信任度
( N! E4 G9 C3 y- L. }3 _& Y/ s' ~8 c4 X
if ([trust-ok] of self)
2 P- l; z7 v  A' j2 V: ~* g;;
根据ij的信任度来决定是否与j进行交易[! ], g3 [. B) D8 R9 y$ p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. ]) ^* \$ a& l  k( X
( X* v' g; k4 [( n5 T( y[

3 k7 K& b6 S0 L
6 @- ]7 x: r( H+ d3 `do-trade
0 E% [2 X) D1 ?% |

8 g% |; D) d/ p" ~update-credibility-ijl

$ w: {! F0 P/ ~
% [* }! R# j1 oupdate-credibility-list
, w3 q+ }& t+ j! F$ y- Z1 }0 |, Q4 B# T

$ T& ~7 N& v* e6 z+ U! v) h" R5 y6 y+ t
update-global-reputation-list
) |, r1 I' q) Z# T8 ^% {7 ^
7 R$ @# d7 n1 c8 ?' m. ~% w
poll-class

3 l8 [1 ~3 y0 ~- @' ~( Y! ?; T+ Z) S, Z% u
get-color

! M5 m* o# o% }2 r3 G1 {
: f. K+ i7 p) _/ J9 |  N]]9 t: _' }1 t. p
+ |) X6 ]* ]4 k
;;
如果所得的信任度满足条件,则进行交易
& a+ ]& G. _& {8 l, _* H) F" B' R% F4 W) W) O
[
, C0 s; v1 I8 I, d" y# |0 Y
5 d3 \5 z! o3 r( a3 r
rt random 360

+ G  K5 G. Q/ E( u# y- {# k' h9 J% `8 m0 Z' A7 e% }
fd 1

- u: h  d# p4 H( h8 J3 N
: ?: \3 ]( y  n0 {( K' }" m$ j: a]
0 [1 B0 @; M) t( r, h& d* U

- ], Q" p2 U2 p' V1 Iend

3 S# Y3 W6 V- F
7 v6 g+ \) \( u* \/ x% d% I1 xto do-trust
- r) D+ g1 G& O, @3 K, s8 dset trust-ok False1 h5 l+ o  P% E6 z
5 u  F: r9 R$ |( e

6 m# l- d( [5 |* ]% a* ?let max-trade-times 0
, P! h* R8 S8 e0 V1 fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" ^; Q1 z4 x! i9 L8 L
let max-trade-money 0% b2 h( E4 Y8 ]) Y# J" H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( t* e- |# `0 Y  Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ \- O8 Y) E9 C6 {& O/ Z# ^
1 G; b6 I7 [: {) }, U
2 B9 r- w! o9 |
get-global-proportion
1 f8 Q' I/ n' Z% a6 Clet trust-value
2 }  |2 |1 H' M# |3 ?% c+ e' r0 klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* y' D& I" l( y; S4 g9 P7 tif(trust-value > trade-trust-value)9 |: M/ k# K  |: Z. \
[set trust-ok true]
  R. c% r4 ^/ V  L) a; r$ iend; `- E3 [$ W9 Q6 B8 V6 [3 x$ N

. u6 z9 _0 r9 }, {to get-global-proportion
& \5 s. U/ Y* ?# {7 V6 v6 S* Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 K/ V- `. z- I: m[set global-proportion 0]
$ }1 b; W- F* W, ~- V8 l8 U[let i 00 d% s6 ]/ P' E% u7 A- a6 w
let sum-money 0' [5 ]6 W7 I; c& }9 m
while[ i < people]" B$ H+ ^0 r. J; c7 d& i
[8 |: B# {7 W1 B" {6 W* M+ K
if( length (item i
" Z1 m% ?; J5 ^2 J2 ?$ _[trade-record-all] of customer) > 3 )

4 B0 ?4 @+ m- @/ h1 E( a[
( g: m$ M. p; ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( a9 D) r* z9 `) `]) X( o+ X+ R1 V
]
! a7 d$ a# v& \4 D0 @6 Ulet j 0
& N" c# Y! A' w" ?$ z6 ^let note 0
: [, I( g/ j6 dwhile[ j < people]
4 x  t, @. g+ u9 K. T[
' k2 ~9 W! N5 I$ Z" ?! g$ fif( length (item i. [$ }* }1 x  R/ ]
[trade-record-all] of customer) > 3 )
& |( O5 V% w* x3 ?
[0 @/ _4 R: L. \3 P& r  L3 Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ b4 Y# S" b& e8 {, H7 W3 l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; R3 Z. b$ O% |7 a, K6 e' ^$ u8 ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! q9 B8 b  r, S& M6 H$ I]
  E: r# A3 F- V; N# H]$ l1 }# v# V/ P3 {: j& \, D
set global-proportion note
# f5 D1 s* q0 {+ H, f5 w9 v], I9 M( N% V  S1 Q% p
end( x  E# k0 M% v( l
8 o$ Y2 ?' M; e$ S4 k8 R
to do-trade
/ l9 I& }9 X! Q9 ^;;
这个过程实际上是给双方作出评价的过程# k- q; c# q; B4 u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 g" l" W( o- R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 B" |' p, k1 e0 D' mset trade-record-current lput(timer) trade-record-current6 m/ e& [2 x$ l5 g
;;
评价时间6 D0 l. h! K' N" C. S0 x  |( v
ask myself [# `# [) _+ E4 O- }1 O
update-local-reputation
7 Z7 ^  V- a5 I6 f, f) kset trade-record-current lput([local-reputation] of myself) trade-record-current& p( N) j. z, b0 T6 F
]
( l1 F3 \' P0 l9 G& m" {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 R8 Q7 o7 t; i+ o( v;;
将此次交易的记录加入到trade-record-one' E3 {* t9 e" w' n; H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 C; q# P) e- R2 Dlet note (item 2 trade-record-current )
/ I5 g; e" ]% ?set trade-record-current
5 ]/ a; q+ I  k6 N; @(replace-item 2 trade-record-current (item 3 trade-record-current))

( V& O( W6 S( z! Pset trade-record-current
3 N; e9 x2 Z6 ?: r( r% I(replace-item 3 trade-record-current note)
+ G* A1 S; W6 H: T+ w1 f7 X8 u; i# r: Q# Z+ Z, C+ v
: R- I' e4 Y7 @. a% ]7 G2 b
ask customer [: d9 Z& M! y) p
update-local-reputation
# x/ X: n/ z$ V# Fset trade-record-current* l) m/ P9 N$ k9 {) Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% t1 I- Y. @& s! x4 L
]
( ~/ y4 @0 ?2 l4 [9 J0 O3 ~5 E  K/ S2 \% Y
. F( n/ q1 X) O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; K2 \' s6 B) T
" N3 k3 T( e! S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& `6 N0 H( T0 B; m- R( p7 T
;;
将此次交易的记录加入到customertrade-record-all" }9 L/ q7 j. v/ d' G& J
end: k2 T  U  x5 \$ x. o
" M, R/ f1 m: @/ t
to update-local-reputation
; x# _7 W% ?8 A3 jset [trade-record-one-len] of myself length [trade-record-one] of myself
# L1 ^% P- s' R7 s$ T) x! @3 t% W, n! I# {: r8 K

) x+ Y9 l, U0 G& s+ I9 H;;if [trade-record-one-len] of myself > 3

/ `, |7 v( S6 d) _' t6 P0 aupdate-neighbor-total  N- l& s( W# z+ ~0 i' q8 p1 M
;;
更新邻居节点的数目,在此进行
8 R8 E- V0 f3 q, J: I, k1 f+ ~let i 33 [4 l* z9 V5 K$ f9 j; p
let sum-time 0- h8 f: G" r1 H: y6 a
while[i < [trade-record-one-len] of myself]
1 Y  q) P6 r9 m0 r; z[
8 H) @3 s7 i9 ]& Z- M) V6 N. oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" P# w6 D" l' _6 T6 V0 H9 Fset i3 J3 o% J9 Y$ V  A  I3 f+ J6 s4 k
( i + 1)
0 h: R+ F3 \9 S0 Q/ S
]7 D) Z5 b, Q( b1 R
let j 3) ]: Q6 c4 t& K$ g: V. O" }
let sum-money 0) U: v) k2 O6 B* x/ t$ r/ i
while[j < [trade-record-one-len] of myself]4 P& k1 @% R6 _4 ]2 m
[7 Y; C1 J" v5 w2 v+ i
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)
  t% Q( W5 [) rset j0 f5 K9 P) x9 m* o2 e; B
( j + 1)
# h1 D2 h; P2 C' j* C( {
]* N# Q: o8 S) l0 Z5 X, L1 d- S
let k 3
  D, k, C, D1 |( P" ^& F( }let power 07 l: s5 f. \; Z8 w
let local 0
  \) J0 D2 Z" i9 C( C0 E$ ^while [k <[trade-record-one-len] of myself]4 J5 i% o: ~3 |: }
[9 x1 @# H& n" E
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) * I  [) n$ ~, x9 w
set k (k + 1)* [( H; L! t  C: m$ C3 y
]
  c" f( \! P! O, o; H- z# ~9 ~% yset [local-reputation] of myself (local)3 _* w! v2 q1 t' D1 V* Q6 }1 B2 C
end
8 _9 t" p% w. @& t& D1 z
( z4 Y7 G% S# ^+ z% G1 R" _to update-neighbor-total
4 g8 ^. a, ~% J; a1 c) `! E
% F8 C9 F! g( {+ X0 Y/ V2 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 O# y3 B. d5 E- @7 v* E1 ]. b% i; _1 ^

( N1 Q1 }! h2 Wend
" c& B# Q7 x! Y* _' L" n$ [0 v( E  j. R- p  e5 N
to update-credibility-ijl - W% n" c+ h6 g* O% P1 R

0 ]  x" A$ j: J6 r$ a2 s0 S;;
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。
; H" ?* z! C: f2 Qlet l 0
9 C, k/ r9 a) M( b0 `! E1 lwhile[ l < people ]* F8 C8 c9 e3 j
;;
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6 I% {/ T' @; Y. f& n/ v' x
[$ y/ W! a% \. [4 x, ~, i
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 F( N2 R' h! cif (trade-record-one-j-l-len > 3). x  }- i9 H# S
[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
( A9 Q, O, g, q9 B- \% ]let i 3
& p5 K- d% i1 b2 {8 ^let sum-time 0' R9 Z' v2 ~. E1 q: e
while[i < trade-record-one-len]
" _* ]! U5 m/ x, F  v[
( I* h' F0 ~' O" mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 X4 v# h- F( i
set i9 X* G/ e) h* C
( i + 1)
9 }1 P6 L( B/ [
]
, E% m" G. D" X5 ]+ u* Z$ U! xlet credibility-i-j-l 0
7 o  A3 R( d8 z) k$ N;;i
评价(jjl的评价)
' S* a* u1 G0 P7 C" ~let j 3
# I6 W) Q6 H$ \: g, Vlet k 4( Z9 r' i" s) M( X
while[j < trade-record-one-len]+ i3 h3 |) v  ?! ?
[
: b  @, f1 p/ Y3 H' t6 g- Z2 |! O* wwhile [((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6 o0 y; L( d0 `! P$ E% ~/ T! i3 _
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)
7 a; h1 X0 B3 v8 w& lset j% M' K% d( ?% G4 o7 p0 M2 G
( j + 1)

8 N! [* m% Q! c5 a/ z1 W0 A]
6 h# T$ ?! n$ O0 N) pset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))6 Z6 V2 w/ ~( z% ]9 ~# U
0 X+ R# S/ b  Y. A+ e/ B- g
1 g- A; V, I& [8 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 S0 Y" r3 L( _" K& z' y;;
及时更新il的评价质量的评价2 M. M9 S6 u! \$ h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: [- A2 S2 s' r5 Q# u6 @* i0 e, ^set l (l + 1)) Y3 L) b9 t0 ^" @- G1 r
]
) ~  Q2 M; H& I1 D& Send0 c7 D; U9 ?  A+ F! ]9 a# p. m4 x

* _- ]5 u$ @6 w9 {) |to update-credibility-list! r3 c1 ?: V( G! s) [
let i 0
1 b- H( j3 _4 _$ hwhile[i < people]/ \# ?, }* }  ]1 W! ?% u
[
; {3 J, t1 {9 {/ [0 n) T: O4 [$ Hlet j 0
/ U+ i9 k5 d" |/ T( |; zlet note 00 b9 v/ `6 P: Z( k7 n6 E) S+ V
let k 0- C* h+ P2 Q3 [& B3 \1 X, J2 d5 z; W
;;
计作出过评价的邻居节点的数目7 f2 Z) i  c: u" @. n5 M$ H
while[j < people]4 j  i; K$ O0 B
[# ^! ]. P# S7 w
if (item j( [credibility] of turtle (i + 1)) != -1)7 ~  p0 e9 _% S( o5 j' l* n$ C
;;
判断是否给本turtle的评价质量做出过评价的节点1 v: [3 S! M& i$ t+ ~  o" J! U
[set note (note + item j ([credibility]of turtle (i + 1)))3 ?* f- {5 y  J
;;*(exp (-(people - 2)))/(people - 2))]
5 X! c6 ?6 f4 k
set k (k + 1)8 a( u/ d) k% |  D
]6 j  B3 S5 Y& I1 B
set j (j + 1)& ^1 H  w2 x' _, ~( b3 U
]$ e/ w3 i3 p7 [5 F6 P
set note (note *(exp (- (1 / k)))/ k)# G, B! B- y4 j2 V* ]
set credibility-list (replace-item i credibility-list note)
+ b- k; G, x9 T; g, |set i (i + 1)
9 @" N! O' m# J5 X- r]
! K3 j4 i; V! [0 \2 cend' U: J) D7 G) L9 {- A

% p, j( ~. k! [3 ?' E# ^2 |to update-global-reputation-list
4 i8 U9 B4 z/ j# x; G" V0 ]1 |" jlet j 0. [1 T+ v. o9 c6 c! ~* Q; x; L
while[j < people]1 X5 W3 J3 u2 Z/ e# u2 S6 y! v
[. u* @0 e: u2 K" Y. O( u' A
let new 0
& K+ D7 Z3 K  `" [- k;;
暂存新的一个全局声誉0 Q9 R2 {0 E0 t6 @& c0 B# i6 N
let i 0
- \$ `% x+ ~( w" _' Ilet sum-money 0
. h& p% a, ?  p; l( mlet credibility-money 0) |2 V1 |" G1 H( u; P0 `# t6 x8 v
while [i < people]
6 b( K3 K* w- U+ B. U0 A[9 |# O1 _- W: L& t" w" |" Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 F5 d3 G  r8 F9 jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 t# S8 D2 t/ p( C% e  @, l+ Uset i (i + 1)
9 ]. |5 p# {- V! T; g1 i]
' Y  c! Z% n5 m5 [3 Alet k 0+ V$ x% n1 }* z1 Y  ?! f4 [9 ]0 [
let new1 08 c& L) h1 c) A/ i1 }
while [k < people]1 A! p6 O) q; ?1 l
[: C: L. t" A0 x+ j3 u5 j- g
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)
! Y! V0 ]1 q  u$ [set k (k + 1)2 P  w* k; v; D; o( k; q4 q
]; V% d- R  G5 H; j# m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 |2 Q) y7 _3 y0 X' W7 d. V/ Lset global-reputation-list (replace-item j global-reputation-list new)& `, E6 a4 d! t$ I4 n$ b
set j (j + 1)& a1 v7 j4 F, b  S- S: O
]* U  ^! }5 y0 j% Y9 h- i7 N$ _
end; z( a! k5 J' T* e  h% d9 Z

, C7 s1 o. S3 i7 u: z) z7 X0 s' P! B8 N+ \' \& ~; B1 y
/ U1 q/ H# w1 T* M8 W
to get-color
1 A1 I: ?0 R* h7 B* ^+ l# z
! ]% o$ P7 Y+ a" f* B1 l5 kset color blue
. v9 P. V" K( R# f
end) P" A( ~1 K4 k8 G, `

9 X- H5 g) A9 R0 g: Qto poll-class
5 L  T. g& l5 u! ]end
8 l; D! t, X: n8 @- `  z  H# h! d: |. H3 k% R3 m+ T
to setup-plot1! H& t6 R8 C& k& M5 t$ p6 t

" A! i" D: X6 v* p, g& @5 Sset-current-plot "Trends-of-Local-reputation"

" G7 a9 Q7 j4 g) V0 [; ?
$ I$ ]' d; k/ p  D. I" c  \set-plot-x-range 0 xmax
. q9 J; a- F( O7 i8 t
4 S; t. j5 U( m. ?  A) B
set-plot-y-range 0.0 ymax
6 B( G9 Q9 n  M+ X2 o
end5 P( K& t; `% i
# o5 ~3 F. \' Q6 b# u( s
to setup-plot26 }8 K0 ^2 S3 L, x9 t& V
6 `. k# H* [: G- ~
set-current-plot "Trends-of-global-reputation"

8 C- S/ f3 h# I8 d! D) s% U/ z9 `! `! ^) c9 H3 q, z2 H% S+ C7 u
set-plot-x-range 0 xmax

. n2 f! i+ P4 U  v: i; H9 d0 k( d6 k! n& ?0 m$ A
set-plot-y-range 0.0 ymax
- j8 K7 _+ K4 f, o" V* a
end
0 f& {0 y7 t1 R* i
; {+ B+ r9 Y8 D% c4 j/ Qto setup-plot35 q$ L0 H/ @+ t' B+ s1 i+ D

* h* J- C# l6 b) Fset-current-plot "Trends-of-credibility"

% _- l1 s' a; L2 [# _" i0 Y0 ]- S' G4 E2 `/ \: V% C2 f0 L
set-plot-x-range 0 xmax
( C* Z3 W6 ~" x
9 g/ O* r' P6 f& p
set-plot-y-range 0.0 ymax

- ~" G+ q7 x4 ]: E( I- Send
- J( A4 l6 V7 X8 @
* \0 ]2 A% T: A- F2 {2 C' ?to do-plots
# Y) C1 l4 b9 ?2 }* u9 {$ H: Nset-current-plot "Trends-of-Local-reputation") b1 ^, m( u& Q) v9 V7 n! k$ r
set-current-plot-pen "Honest service"7 N! _; a' |$ {& _
end
% }+ k$ G5 o' ?
% Q0 s5 g; A8 I4 {" E3 K[ 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.! h1 f; f6 x4 a/ N
) Z9 {# \  q2 C0 A* H: A; G/ n
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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