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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:. ^1 F7 @! _2 Z2 H+ y
to do-business
1 z1 L3 o$ N* L2 z rt random 360
1 h4 q+ D% K& Z% r9 j& L fd 1& q: Z0 ]/ N* z0 i( y5 M
ifelse(other turtles-here != nobody)[
. ^) F3 P7 n' g  I0 r1 G   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.& ^. G/ u! s4 }7 F! L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 N8 q6 r5 q; l0 d: N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 f- M3 i6 \  Y4 I8 |% j. B  a+ ^   set [trade-record-one-len] of self length [trade-record-one] of self  G* _6 f  K  M+ H6 Z8 V  v3 C
   set trade-record-current( list (timer) (random money-upper-limit)); c* U4 v+ [+ H  e- D% \
& @, ]8 D* v- a2 s2 n- i% G$ q) q
问题的提示如下:
2 v# t$ o7 \7 [- x4 y# q; M* v' r& _7 ]% M) F7 E& y( D4 T: j' i' J' R
error while turtle 50 running OF in procedure DO-BUSINESS2 s4 S, E9 l2 d( w5 Q
  called by procedure GO
/ Z9 i8 |9 B+ v* _OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ {& f& P) b6 Y
(halted running of go)
6 z1 o4 A" r* ^9 W% E6 l' v, h9 g& ?* w( G0 d( N$ B; ?( b
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~~
! i7 `" L8 D& q% x$ A1 |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- l: t3 Y+ P( }& k
globals[& g) i$ [4 h, ~6 }6 a
xmax
6 X  A& g3 d+ d/ t$ _* K6 {ymax7 v+ `, y9 b4 Y$ e; l
global-reputation-list
- J( J6 _8 i0 \0 `8 J- f; I! C/ L+ h2 j
;;
每一个turtle的全局声誉都存在此LIST
( w3 x, L$ f0 l* [0 \3 f6 Xcredibility-list; j0 ?3 n% }+ L- O  q8 d
;;
每一个turtle的评价可信度7 y  c' l1 K" C3 g: h  H
honest-service
( s% p- n0 j, |% e- ounhonest-service
) D$ g7 r7 r7 doscillation
  f' {' ]* {( U, K6 i# Lrand-dynamic
2 t$ D, G3 ?9 c. Q$ i8 C' ^( C]
9 ?& H5 G+ ^( T: s
5 m4 }% k# c$ hturtles-own[4 R* o" ]1 x3 g( a6 \
trade-record-all: S3 v' C6 o1 {( |5 ^1 s2 E1 R
;;a list of lists,
trade-record-one组成
& }5 s) |, _( j1 w5 n! ttrade-record-one
& ^( I0 ]. Y) j8 o2 d: K. ^; L5 N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 x2 w% E( i" r* P5 s# |# }

, ~& G8 |" d: b7 T$ ~3 h5 ?2 o;;[
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]]
; g: z5 B7 w% n+ c8 ^, }# \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- q/ P# H4 r9 lcredibility-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
( z9 u4 D# N5 M* Qneighbor-total& X# N* V; o' {' k; }
;;
记录该turtle的邻居节点的数目
9 B* M6 m4 H! B. L4 `) c2 o$ M1 rtrade-time( ?; A. b- ^6 Q+ [$ P+ J
;;
当前发生交易的turtle的交易时间
- }( k' n) a7 F5 A: A; Cappraise-give
, @% p! @1 l' M& C;;
当前发生交易时给出的评价% D( K$ m  P! H! Y
appraise-receive
- G3 i  [8 Q, }3 _7 |8 k;;
当前发生交易时收到的评价
% D8 F0 L, i2 b- v$ ?. a2 s+ Eappraise-time) ^, U! a8 X1 X  t% W4 F8 Z
;;
当前发生交易时的评价时间
. O% @  `! q: H8 V8 ^1 Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) d* y: Q' n+ ttrade-times-total
8 n) _- s0 M. k0 s;;
与当前turtle的交易总次数+ y7 J- ?! V" K' [0 u$ S7 t" E
trade-money-total0 R$ M5 O; I; ]9 ]' V
;;
与当前turtle的交易总金额
$ ~1 G$ Z* ?! h0 tlocal-reputation
& N2 E. w: u! g3 y5 R8 D+ E: uglobal-reputation
2 h; J% p6 M- `; qcredibility
! ?- }2 q- f0 f( O# S;;
评价可信度,每次交易后都需要更新
* e! ]: M( G4 x: c: zcredibility-all3 l: d$ \& J: }/ 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( W8 I9 j( j0 k3 G' |% l

8 B9 g9 L: N" Q' Q% g) z;;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& R8 H/ B8 w, H5 Y2 F0 ^) d
credibility-one4 u" i0 |9 O. J$ y3 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
0 d* ?# }/ K  {global-proportion
4 x- i) a; @5 d% rcustomer
  f$ R0 U* r& m4 ], o  Pcustomer-no
9 ?- P" n. P2 ^9 j* y$ g. @trust-ok
, {3 [2 i. W. T) V9 W- ytrade-record-one-len;;trade-record-one的长度( D  K. ^' T) E& m- Z% e; n6 f
]
8 ^2 [# Z- z2 X+ I6 X1 n# J0 D% L! v; q; L4 ?% t
;;setup procedure
, @! ^, s7 X7 Z% v, G0 p7 p% X: s; H9 W5 E
to setup! n2 m' U  K9 I
  |3 m4 t! Z7 x! O) Z
ca

, P5 F  }/ z3 z9 w8 V0 M2 ~; z5 h' b) Z
initialize-settings

' [) t% q% l0 s% q7 H* l0 Z4 ~1 _9 p& u8 @, J. x
crt people [setup-turtles]

0 p- t" L. m. i  T2 P$ [6 B* R$ i: K; l
reset-timer

$ t* h+ @& R1 x& e9 U! Q! w7 q. x( A. b& @: |9 c( O) |
poll-class

. ]( h' u( s5 Q" A
9 b" c5 }& w0 t& `+ Tsetup-plots

3 W% j0 B# D3 `$ d
" I6 C# n* a1 K1 Z/ f1 Edo-plots

, T. j3 j9 R1 _6 n: zend* O2 }! Y+ @( {! G3 z3 D% ~0 G
8 K3 X! J7 V' u  F8 w# c+ H
to initialize-settings
+ x0 B- d# E& I, Z1 a* m2 M
2 S8 B% G1 o" J" @- v5 Vset global-reputation-list []
* \( s2 A3 G7 p) z

) C" e$ {4 z5 L" Mset credibility-list n-values people [0.5]

4 y/ b. X3 v6 P0 Q1 u9 p" i. ^
! ^  @  e- O' @+ n9 Cset honest-service 0

0 `3 m" u1 v1 j& R2 b" N# O! ]* o& L) N" }
set unhonest-service 0
" h! Z: z0 Z$ A' E+ v  l7 {+ Z  a
- y9 U0 {. a# l  d
set oscillation 0

' a9 {; b5 e4 S% y8 y" ^0 {8 R& W: @. d9 l$ H! a0 I8 p
set rand-dynamic 0

& n% d% ?! s! X6 ?end7 m& |- {  j6 H2 L

* x! Y$ O* _) g! @) S" vto setup-turtles
+ }8 B$ }4 n6 L, B6 zset shape "person"/ a9 M. S! V% b) R/ F/ N3 R/ t
setxy random-xcor random-ycor, j9 h% C* T2 W
set trade-record-one []3 n/ p- |) a1 \( [: l9 z9 N% [
, \& p6 v6 Q6 A' Z
set trade-record-all n-values people [(list (? + 1) 0 0)] * c  W9 ?7 m# ?2 ?; ?

9 u& ^$ b, z& e' F( o! p* O, hset trade-record-current []0 m) j4 G- H: M! T: x- L, t
set credibility-receive []9 f$ _9 D, R: L3 C5 Z
set local-reputation 0.5
: x2 A% @, Z: Yset neighbor-total 0
5 G& o8 o) h5 c/ ]7 X/ @set trade-times-total 0
# S4 D3 P) c: @9 X* f5 b/ N7 W6 z7 fset trade-money-total 0% _% U3 `: ~/ D' ]7 C
set customer nobody+ {- C9 j  [4 C& ~% Y
set credibility-all n-values people [creat-credibility]
- }8 Z* h' N: h' p& Oset credibility n-values people [-1]7 I" s' S. y7 Y8 F( T1 E/ Z5 v! n
get-color+ q* t, `1 g9 b0 |. W* N

) d% C' k+ Q) ?8 l: C2 [; f( D- zend
7 \4 d8 s" a0 m8 P# f  I2 B* j. N! K
to-report creat-credibility; I+ ^$ I) |0 B0 R/ h8 V
report n-values people [0.5]! b+ Y# q. \& N; y' T
end
4 s: Z0 s9 P2 u  a$ a3 O" A$ W8 w* Z. \0 h/ p
to setup-plots9 |+ ?3 G4 k/ J6 L

' d* N; q3 z+ ?* b& W  Yset xmax 30

0 h& z- \. F  k4 o! L. {* A, j
# B) [& x, [# E* S! u8 [set ymax 1.0
, n2 r) S2 o, w1 ^7 @( E! V
- Z$ ~! x- z- A" M; e) \
clear-all-plots

+ ~: Y. L* s  a6 Y) @& r  }
' B, R0 Y4 K; H5 n- Q  K/ ?$ msetup-plot1

  y6 K8 `# y& {
$ w: j9 o% D$ ~' Zsetup-plot2

' ?% y, S8 {: ]& C: t1 ]
" t& ^2 S; W; f4 C) Osetup-plot3

  O; ?/ q8 r8 I) o+ F! l$ Q' Lend4 I8 o- D/ |1 a

' S: D6 s' q' d; j8 n9 y" N;;run time procedures
+ A# n; F$ `8 Q3 t
4 V& T* a) A* Kto go
3 [( \0 `5 E! ~5 s, M" ~7 o( Z2 O( j
ask turtles [do-business]

* C: L, V/ _- a9 r: h2 xend1 v( S$ F. l7 T8 a8 @( J
" _& V( c7 w% B# e: |2 S' j( ^
to do-business % x0 d$ R1 z# ]9 y; ?# L
8 o6 c, u- b) x8 j

0 ~+ C; _- Q7 [& c8 o2 x. d4 H$ zrt random 360

0 I& i- {( R* i4 b2 Y
9 ^/ J* ^* O. b# i% H- sfd 1

: A( B9 v; o( a* @3 d3 W, Q! m: ~2 }) R: n7 a7 u  }+ J
ifelse(other turtles-here != nobody)[

+ [; Q6 |: M% H( }/ I) M$ r
. D/ d5 R! G  B0 P, C, q( d+ eset customer one-of other turtles-here

: E9 \# X, [& ?9 Q; r4 O
/ G! [0 F* O) _, W) k: l;; set [customer] of customer myself
$ y7 ?' ~+ X2 ]$ L" b" Z# K4 \

+ F0 Y) k3 J3 d6 Nset [trade-record-one] of self item (([who] of customer) - 1)9 x: s# I. N. i2 z% Q# V
[trade-record-all]of self1 C! b, B  N3 r. j3 `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! X$ ~; ~7 k2 y' t  v2 f
$ [$ c2 s) O; p) \9 \
set [trade-record-one] of customer item (([who] of self) - 1)
. ?+ f' |# S& w7 P' o[trade-record-all]of customer
' [% g3 r) Y6 T8 V. `

+ V0 ~8 O' R: \1 ^/ o, c( v4 Aset [trade-record-one-len] of self length [trade-record-one] of self
* h& l$ M0 s1 D* e" K# Z9 [' f
, h/ X  G# q1 N& v) t% g& g3 [
set trade-record-current( list (timer) (random money-upper-limit))
$ ]# |' j0 N" ^$ Y$ H6 s. x; R

' C" z6 N9 o+ B1 Sask self [do-trust]
( b* \/ D4 h9 |( b;;
先求ij的信任度
4 C/ o/ M: f3 n  m! O4 W2 R# p: M  j) b
if ([trust-ok] of self)
$ S* Y$ ^3 H2 {0 s" ~! s;;
根据ij的信任度来决定是否与j进行交易[
+ Q  u# [, _% k2 B( p7 W1 E' Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' p* m+ j7 ]( \* j$ b7 b& y
! C, }1 M* Q( }( }: {* q- a
[
8 U0 l# U: f! g0 Z
% r' |/ n) y" a4 S8 ]
do-trade

6 S, m0 Z% o0 Y" `- f% }2 X& S8 g' x1 J- q% K
update-credibility-ijl
2 E: K2 f% r5 F8 g
7 p  `7 ?' k5 S: g! `, d9 T2 k' a) k# K
update-credibility-list+ q, S/ k# i. i# g; `

: n5 |" {1 B3 G# \6 e% Z" M, R9 G/ \) G2 w$ i
update-global-reputation-list

2 N; x, e) U* u" @6 y2 H8 z( \4 i
! h  D) e/ M8 _" ]9 a( upoll-class

$ }7 z2 L  ]! T
( g3 e9 @  T$ p: `get-color

; p- d' _1 M) L, J) j  z) N6 o  v) O. V0 v/ O# h8 E7 w6 {" o
]]$ d  t% p8 Y7 m; ]6 y* {, z) u

( w$ ~& o. B  ]* Q: Z2 n;;
如果所得的信任度满足条件,则进行交易2 t- y$ m2 y' J2 P9 L
& B2 ^+ a* O( V) [7 J
[
( d+ y$ H8 m% D  w4 U

* U2 K0 {) j" W% H" ^4 P: V! drt random 360

! n+ Q6 {9 y' `
& I3 f0 z! P' z; g/ A2 Jfd 1

! Z9 F, d+ b' x
7 H5 v. K; n4 G8 p]

4 C! Y5 w' ?7 a3 T1 X* w' r' t  J. L% U5 F8 r
end
5 l" }* N  n5 i1 Z+ I% z) e* d; {

5 H! n8 S. c1 @7 p3 J/ ito do-trust 0 [9 e9 U" _, R$ w3 @5 N- K
set trust-ok False
8 i# V$ ~* q4 T) x) m7 H
8 h. J5 b/ E( }+ m4 m% t6 m
, }. I* ~$ u* k' e* }  C5 z6 C! W
let max-trade-times 0
. R  A% @' i/ Y$ W: C& Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 U7 b7 q3 V6 c' b9 E  |6 ulet max-trade-money 07 d8 C) ~1 r) x1 A! M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 U! v, T6 }2 e, Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. P' i* v  B6 w0 \7 P
9 Z/ E8 W) n7 p' `; z5 M; R

! T8 H: a# q6 Tget-global-proportion
7 n% Z1 d8 G+ X& hlet trust-value
9 u4 [9 p+ l6 Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 b' \+ v# M' U' ^5 H2 D& _
if(trust-value > trade-trust-value)
2 `$ c* b+ ]9 j. b0 H[set trust-ok true]! |* E2 e5 G  q- v0 _. ^9 @' n$ s
end! L' F8 B  r& M3 C$ l

2 k5 i  g9 ?3 L+ a% h3 Xto get-global-proportion
9 Y% T4 i) |+ S6 iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); t$ D( B& x7 J8 J: B
[set global-proportion 0]3 I6 n* o/ z; a" Y9 w
[let i 0( g( w; h& h5 k7 H* [8 B
let sum-money 0; j1 z7 S  I8 {" F" @
while[ i < people]$ d9 F" R/ g, Z
[
8 y$ N& R# R, \, t5 H4 Kif( length (item i
$ t7 K. A# T' d/ g: c6 R[trade-record-all] of customer) > 3 )
. U0 ~* V/ N' Q+ O6 J
[$ q/ ~+ A) W( {' [& _( T+ ?! F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 M' }& |0 h) e! b8 N2 _0 }]
* W4 Q) z- F( s$ a: D5 o$ i]
& O8 k" |# b4 o+ A1 c' Elet j 0
$ [% F3 r2 t/ ~4 C  q# @let note 0/ K! D/ E$ j( w
while[ j < people]. D: `1 t/ X% q; o# e& d: s
[7 u6 V, E% q% I; `9 _% `" k5 o
if( length (item i! s" W  i% s2 ^. L$ v* S# O2 o5 c
[trade-record-all] of customer) > 3 )
/ s6 |: D& z3 U: l4 k
[
, W$ i4 y& a1 H/ qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); z1 X0 Z  b4 N) U5 o( P5 N7 h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! }- Z( M" \3 Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) Y3 h# j# t# x
]/ x6 x; x/ I/ {/ c: O
]  x  a! B  c2 K- W8 N8 W
set global-proportion note  S3 R* y/ _. K
]
# N1 G' {2 X0 a% C6 I; j, S6 pend
& s6 b" X  F) }, Z! @
/ e! ]- K9 k$ }% ?' _4 `to do-trade
; ]! h7 ^  z0 ]# C$ `9 T;;
这个过程实际上是给双方作出评价的过程
* Y% L! r( |, Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# J3 g4 }* M4 _" z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 R2 ?- p  B; \set trade-record-current lput(timer) trade-record-current' j1 U) Y2 }8 q. `; j
;;
评价时间9 H+ ?8 G; H( ~7 `
ask myself [
# y/ w) C& }' x6 {8 s7 ]$ c8 w- Q# @update-local-reputation
: N2 V9 E$ @$ \9 G8 K2 x0 Z, Z4 V5 Zset trade-record-current lput([local-reputation] of myself) trade-record-current
. r9 r/ r+ }0 z0 {3 ~5 Z]4 [. Z0 y& v5 n! s* d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! ]- u. v6 h* l' h( G/ A;;
将此次交易的记录加入到trade-record-one  _1 z) c& ^+ w( @: G% L0 h' r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% U" k* e1 W4 E
let note (item 2 trade-record-current )* Y  q0 x. P, I# z+ e
set trade-record-current+ F* i# E' }0 r. s. E
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 R- ~) D, Z0 d' jset trade-record-current
( n4 b1 O* Q3 K/ `(replace-item 3 trade-record-current note): I3 A8 d3 A. B. [# r
8 N8 F& ?! v  \$ C7 {
1 \+ A: H7 a3 O( r5 w4 M+ K
ask customer [
. E, j* S* f" o  Vupdate-local-reputation8 w' n4 _2 y" r# m0 \- M% l
set trade-record-current
! H/ U' I8 n' K! [  C& i! [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ n) q2 F" b' P0 }. {! v]! ]) v' Q' W1 M! n: I

# T! p; l: F& k  d4 X
0 i# F. f4 O( D4 ^4 [, E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 ]/ q; L; Q! f3 V. ]5 V/ A
) j/ `& H4 q& n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% j# Y( S0 Y; x
;;
将此次交易的记录加入到customertrade-record-all
% e6 v5 H; I' E) N6 k: pend% K+ ^8 P' U: A5 Y* d9 s
+ e% T4 L6 H! l- ^: z$ `4 |' \
to update-local-reputation
3 \3 Q+ c7 R- X4 ]( Z' s, bset [trade-record-one-len] of myself length [trade-record-one] of myself+ F8 l9 R" O  I, F# Y: F

5 X* y0 L3 I+ [" ?" \6 I( ]" p( w* _4 k7 @" B' b/ P
;;if [trade-record-one-len] of myself > 3

% ]8 p3 u; E/ ?5 Pupdate-neighbor-total/ q8 j& z1 Q' ?% _5 @  ~; v
;;
更新邻居节点的数目,在此进行5 R7 M( o1 Q3 N
let i 3' V- c1 o& q& g
let sum-time 0
8 S$ N, {: F* x, nwhile[i < [trade-record-one-len] of myself]- Y/ U' t  }" [1 `
[
7 I: D+ d3 Y, J3 t% Y' E5 l0 u* eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( d, V8 h3 O0 Z  vset i  q7 e8 M% t* B+ }' \$ d
( i + 1)

' W" u3 y/ W# _0 ^]$ j: @0 J% I  E/ h, `
let j 33 q! u/ ?: D! x/ |7 ?
let sum-money 02 y0 Q. V1 M  B* H) k# @0 v3 l. k
while[j < [trade-record-one-len] of myself]
1 g/ V2 C* E% F7 N[
4 L* e4 W( _8 ~5 t, aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 R7 R4 q* ]1 Cset j
/ r" L5 M# }: ~# s" `$ c( j + 1)

$ `( x+ v5 s; l]
3 |9 y+ Q( j( t+ R4 G4 Olet k 3! U% [- u7 g% F- Z2 Y# J. Z
let power 0/ q$ T9 H0 D$ i
let local 0
' I  d. w9 i3 M' {- Q( j6 r5 |. Twhile [k <[trade-record-one-len] of myself]
4 @: }- ~" J" p2 P  I4 d[3 ], }$ T+ w: f
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)
5 z& E  e) ]& l9 {set k (k + 1)
+ w5 w1 F- V+ i* z]
& e7 M( ?1 ~7 H! \1 ?. pset [local-reputation] of myself (local)
/ ]( E8 i* l* Rend, U5 `: O! q* X" K1 D3 N9 `9 I

1 ?! o! E- K% e' f9 bto update-neighbor-total$ K/ ^# C1 h1 ?( u# |

4 Q- J8 A6 M0 e" Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  ~: _6 b1 A" m0 M# V# W( X- [0 @2 y8 y2 B+ _7 G0 b2 H' W9 t
+ C5 D$ B% S% H9 T5 l
end% {) Z3 A8 ^$ `; u

6 @, u# P% C6 T0 g0 N* {to update-credibility-ijl 8 }9 e% I5 ^8 ~- {: M

+ E) V3 |/ z+ Z9 R* g! V" L;;
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。
+ v: E; m9 O, e$ t* o5 }8 Z! x) Ulet l 0
$ Z* h* `5 V" N( {* @5 \+ J% n0 f  Dwhile[ l < people ]
; l! H. n9 K/ R9 w3 I;;
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
  K. n$ b7 K* I! }- ]( U* E[" D' i& z6 c' p+ P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): l3 a/ [4 R6 k1 W2 ]: }2 D5 A
if (trade-record-one-j-l-len > 3)
3 `0 ]- t, H& N. y$ W% O" C! l- K; j1 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
, O- S- F, ?# L8 p7 w$ Slet i 3" y' A4 ~; Y' f. ]* o
let sum-time 0" ?/ y1 ^) R1 j
while[i < trade-record-one-len], B# m# G* f" T) i, L
[5 g: F* ]! Y5 O" x. H. U3 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 Z8 W  T' y: i3 K# K; a: n5 }
set i0 |" K8 ?' e) B) v  [
( i + 1)

7 u  {, P, x; ?' V]
8 H0 u6 m5 A0 D, ~9 u0 tlet credibility-i-j-l 0+ I: O+ {$ }, v6 P6 \* O
;;i
评价(jjl的评价)
- a+ \# j- w. _4 M( [; _* _; \let j 3
; y2 g8 D& k* D9 @! C) U, _. _( l1 dlet k 4; ~0 \5 G0 r: t
while[j < trade-record-one-len]. ^9 [- T. @; Q3 z6 w+ r  @3 m9 U! y
[
9 x3 u6 P+ X1 S) H  Z# r! ]. gwhile [((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
, w9 T+ e2 d; gset 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)# J+ |/ s9 A. L/ F
set j
0 ]* U2 H8 G6 w# T4 j+ X( j + 1)

- t1 c6 k$ [" C2 J! Z! X]; O: F1 Y+ ~! J3 ~# [; r+ 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 ))
) k7 ~0 g9 w1 X1 X: ^( L
. L; N$ @2 a- t+ G: |$ m! p3 i

, ^3 [9 |" l4 Q( llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# T/ H5 S0 [& p$ G5 Q4 X/ [. B
;;
及时更新il的评价质量的评价. B- a6 D  s7 U% V  t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 }! w5 w4 V4 z) B; R: {% C
set l (l + 1)
. D2 _3 r4 `, t( M# C]
5 e! P3 O, Q, N. U, iend
- V6 p6 X* f1 Z! g& T, \* ^7 b4 d; h" @  F
to update-credibility-list
2 H; Q# X$ C5 O0 |- f, Hlet i 0# @* L6 V% K5 c+ D) c3 T" j, f% _9 x
while[i < people]
6 H9 [. S/ X* |2 v; c[
% f" f( `/ ?% Clet j 0% l' c* l: H0 ^8 `. {" L+ I" |
let note 0
: j+ l2 x; @0 ?4 g# E( Dlet k 0
, T0 l$ o! P6 u7 \: N;;
计作出过评价的邻居节点的数目+ M! K2 q. r4 k5 `2 t
while[j < people]6 H: k" }. n3 k3 U( J4 F7 Y1 K
[, `( H3 d/ F8 q
if (item j( [credibility] of turtle (i + 1)) != -1)
  g$ a3 e. e9 ]4 C;;
判断是否给本turtle的评价质量做出过评价的节点
" ^* m/ w" A* t4 z0 d1 N1 S! D[set note (note + item j ([credibility]of turtle (i + 1)))
% z0 g& ?, ^3 B;;*(exp (-(people - 2)))/(people - 2))]

1 O& O4 q+ l0 L  v2 Y$ Eset k (k + 1)
: x* U5 m; D. A# L" ^, ~3 O5 s]
# W7 N* K% ~3 D7 mset j (j + 1)
9 ~8 D6 H/ e) c# p% s  ^]
3 g3 v+ \# K* U% F/ z1 t. b1 Fset note (note *(exp (- (1 / k)))/ k)$ D# E2 k3 l3 E4 ?
set credibility-list (replace-item i credibility-list note)
! T: x6 Z% W" r2 b4 [set i (i + 1)3 U7 v* `$ d5 U  ~1 e
]" ]) H, S+ G: n
end+ [, X1 X7 y+ s* |

6 _# h; q& ?( Z6 V. w: F2 y/ O- k2 }to update-global-reputation-list% n! w/ p: d5 G1 c$ J
let j 0
1 }# u9 z7 h1 J6 a+ uwhile[j < people]
7 z5 F! r- [" \[- b+ |4 i" d8 V( t$ [9 H
let new 0# z( [6 v3 E; ~" F6 m/ _
;;
暂存新的一个全局声誉' ~0 U' F' a& B9 c+ j, K  u
let i 0, t7 ~9 `9 L8 O  W. y) |& u
let sum-money 04 z! g6 [, T; m6 j
let credibility-money 0& o$ R$ b/ J' @8 I+ L- l3 n& u1 @
while [i < people]8 R: }) L. p+ h" g
[
* t* T# q6 W" Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 ^& `9 k8 ?! M' Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* x( c. q# s6 L0 v
set i (i + 1)' m8 ]$ n, F0 W) ~0 U/ Y+ P# t& Q
]
* n$ f, q! a2 K" ?! v1 k! L* tlet k 0
6 H( C; J- G# D0 y2 t! `( Flet new1 0
7 n4 i" j# p2 M* m8 W( X+ L2 |while [k < people]
  }+ h) f; b: I% p[2 R4 V3 E- h; G, h# v: z3 p2 p
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)4 d) c" e4 x$ e' a
set k (k + 1)4 V% K" {  z0 T
]
3 Q2 s# y8 P" r0 g# Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% M1 r/ x$ P& n3 rset global-reputation-list (replace-item j global-reputation-list new)7 X- M; m& [3 t- k
set j (j + 1)
: s  Y8 A3 q: j' [: J" s]
0 @) g" r( T6 |" I5 jend
8 ^3 p' ]) |: M6 j% S% T2 n4 T0 x9 Y& R1 {3 I( A; k6 t
- c& w% ]  [5 ]4 Z% m
# p  V( V! t5 r
to get-color' e- U& G% k7 B- S
- [2 g) r6 a; k/ l+ P1 T3 N
set color blue
! c2 h# U- P, O" G9 H- u
end
5 C4 a' E0 g/ @; `$ O. ~
1 V/ Q& P! ]7 k( A, d3 G7 d; kto poll-class
- Y. l& e" x& X, Zend
" j; r2 x3 G" {! E( r! Y$ `$ y2 w
' {+ F) n8 L6 T6 O3 h  lto setup-plot1
4 H1 K3 k, j: L6 h5 P
. f" i0 Z* d; }& zset-current-plot "Trends-of-Local-reputation"
0 k" f9 |6 o1 F3 x( K/ `; A/ ^
; m: V. [' P( I. H3 n% G4 l2 Y
set-plot-x-range 0 xmax

' y" ?4 e* O0 K4 V: d* ^' V& `9 y+ Q& X
set-plot-y-range 0.0 ymax
) T$ I: r3 R9 w. \
end% R: Z7 V5 I) \

( q1 L/ p2 K+ ^  A( o/ U. _to setup-plot2
( a! k# b  z5 R- r1 {( {% y4 ^
. Y" G6 U' J9 F7 ^8 rset-current-plot "Trends-of-global-reputation"

2 \! j+ P% _. b1 |5 ~$ }& _# O) Q! z9 d) ?. W, \* L1 G
set-plot-x-range 0 xmax

2 ]8 D, x2 {* `& l0 D3 G( n2 D5 H6 L5 J9 I; n9 o0 D  w
set-plot-y-range 0.0 ymax

8 m  E) Y% z* Y# |4 C  Wend3 s6 B6 s2 z, o' C; f/ j4 f3 C

2 @* Z& g6 a( O% D$ I3 W7 u# Gto setup-plot32 d$ W) U4 L: Q) J3 o

* o* T, }5 t( p$ D, G6 Kset-current-plot "Trends-of-credibility"

) D' f% Y1 N& w/ i
! g: D6 M. V- ^5 J' ]set-plot-x-range 0 xmax
( Z; n$ C0 ^: Y5 Z" ?' B! H

' F; `: ], D, N+ L, I9 h; E1 vset-plot-y-range 0.0 ymax

2 m: }& N/ D2 l1 oend
) h* Z) q! C" p- j7 H& `
! w0 S$ v; @. }% I6 T2 k% ]* Jto do-plots
+ q; g0 |4 j. Z' I% Y7 Qset-current-plot "Trends-of-Local-reputation"
4 a, ^0 b- B# q( C+ aset-current-plot-pen "Honest service"
* K( [6 n  V* t  eend
0 a1 x+ a# X8 N  v2 k0 Z) \- p5 o9 p+ N5 k' Y" z
[ 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.
# ]2 R1 @6 a( F4 b6 c
+ C3 q* _. ~1 r9 h* O1 K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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