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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:
  n) m1 o7 \- P# Sto do-business / t6 R4 [! s2 P! R1 j, e. U
rt random 360
8 }" ]3 t) X$ P" L fd 1* n" H- g9 T& m, v" s: y8 x3 v
ifelse(other turtles-here != nobody)[
0 l; [" {# z6 }! @5 \; ?$ L7 R   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.; W  u" l- h1 _1 e# G6 h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : }: M9 e7 r" A7 F( \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% B; Y8 Q: T+ D
   set [trade-record-one-len] of self length [trade-record-one] of self
! g7 Q7 R4 {- Z; u: O; [   set trade-record-current( list (timer) (random money-upper-limit))
  o3 k/ P! g4 X; W* Q- q5 {. Z" {: {, t' S+ x, T
问题的提示如下:$ p0 F6 \, X3 V. n/ Z! g
; J) c8 j2 s. m: i( a1 R0 G* x
error while turtle 50 running OF in procedure DO-BUSINESS# R- m! L$ B+ r4 d
  called by procedure GO5 L" k$ @& h/ X: ?0 k: \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! A7 W/ ?' G) Q+ @% m. \2 p
(halted running of go)" O& n" K- m# K
4 N# r) _9 T, L$ M' i& {! M
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~~
* L  X. T- J, h' X- J" \+ f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& U, Q5 o- {6 X$ v! P' P5 e
globals[
7 I4 A! \0 I1 ]0 I* e) e8 `$ cxmax
: I1 {3 j  b& Z4 e! mymax
, h1 B$ p$ c% |  L5 \5 _, Bglobal-reputation-list5 y+ H! @; l& _6 Z6 f' a! y, q1 Q1 S
) o6 ~' i7 E% ]1 P2 K! U! d
;;
每一个turtle的全局声誉都存在此LIST
% r2 ~2 Y+ O( ?: Ocredibility-list
" s/ J* G- P4 Y& X0 B" \% b0 g;;
每一个turtle的评价可信度# X" H7 ?  }( w( b3 }
honest-service2 r1 D/ d/ S. \; N
unhonest-service
4 m. U/ ^1 {; G0 Q$ Voscillation0 P7 E: |3 c( ~/ J
rand-dynamic! ?" d3 [9 a) F  t
]  Z/ o2 x& z8 _: N- x

# u, d8 n+ B( M. l  R4 M; gturtles-own[
3 t4 b3 b3 j0 W) G9 {: S. j9 e( etrade-record-all) ]5 ~2 L& J; x, [& g
;;a list of lists,
trade-record-one组成$ i9 F. W8 O( P) w0 R. T8 C
trade-record-one. q, r+ M% h  ~1 g7 ~# W* J: |
;;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 L) K2 d7 Y. E. k# `
: M" f: d7 a0 K5 n% D;;[
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]]5 V+ P( m/ E  J8 I+ q
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: p/ J1 J% m4 q& ~- x+ Xcredibility-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list0 o, I5 `, t- {! P, U+ x; s
neighbor-total
) a+ C7 O' y& p/ `/ j;;
记录该turtle的邻居节点的数目* t+ K; k3 ]! |0 ^8 W) r
trade-time) V, p+ g1 p& C! W8 z3 N( w
;;
当前发生交易的turtle的交易时间1 j" G3 f8 J: O# j+ [  z
appraise-give* |/ r, P9 m  F8 D: }3 B
;;
当前发生交易时给出的评价  y/ S& K0 E' `& ~4 P/ \
appraise-receive; w4 ?# N2 ?& G' r9 }6 [1 O
;;
当前发生交易时收到的评价
5 R2 `# O* B# Z. W- B4 W! S) ]appraise-time
+ r* s. Q) u, W4 p7 K1 _. J% z+ Y;;
当前发生交易时的评价时间, v0 B! h8 h! Q( W9 B7 B4 w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# b5 ?% y5 W8 C' E  z/ I5 [
trade-times-total
) B  Z& R, w7 O) r8 v;;
与当前turtle的交易总次数
$ K' X2 V2 |5 C: p3 d0 Etrade-money-total
6 H2 a  x4 R3 b& }8 q  [* H;;
与当前turtle的交易总金额6 t' r# V' F; s8 [2 _5 W, [4 y) Z7 ]. _
local-reputation
, K$ f' s  E, j9 `8 Fglobal-reputation
2 d7 a1 q; y/ K8 ucredibility
, c6 _6 `' Y3 H) D;;
评价可信度,每次交易后都需要更新
. Y6 S% O- ~& C) U0 ?credibility-all; `( c" g2 C( q6 L
;;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0 V% e. F4 e( f' ]) g

' u9 n$ G! {- L! r& ];;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. Q7 A7 G% B  l2 \9 B# e! g
credibility-one
' K. O% b" K% y" S;;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 T& F" `$ T; `+ eglobal-proportion: @. F3 P& K9 G# ^$ l
customer7 @' y7 R+ D; @2 J" \- a
customer-no
3 d% W& |7 P% }' m: Dtrust-ok4 M8 s6 n. B& L1 m3 B" w' ?4 K9 Y
trade-record-one-len;;trade-record-one的长度
+ V& M0 S$ T% N9 o: M]
0 l) d$ ?6 t4 W& L' E, P  W
* b5 i$ A& F! P; v, |+ y4 C" C$ V;;setup procedure$ ]: `0 D) _8 D4 G4 a4 s) B1 w
2 [& d/ @' [, t( n) x$ i
to setup
/ W9 |+ W+ v" a" s4 z
6 K& O8 D. W! F, y5 g( P* vca
) e4 G! I/ U  [0 d' n* u

; h. }* |$ m: T( ]initialize-settings
$ k* i3 U6 W* ~: a; w3 W0 Y
) ^" J: G4 ^2 ~- ?& H6 }! t4 _& s
crt people [setup-turtles]

* x/ f* L. d- [7 o& T% r- R, g: j
1 o" n- n% @% ?( I; e3 W4 B; G. breset-timer

! C+ x( m6 R% M5 m& ?3 S* `
9 a4 T0 t" O) opoll-class

  v" P5 R. \, S- Y, u( K/ F2 T+ l1 l9 |: J
setup-plots

$ M. W$ y* V4 E: c# {( Z# o3 S! G- b2 {
do-plots
8 [$ r2 R0 t8 j7 z
end
5 u* N% x1 o+ a4 g: K! M1 b' c& n
, `$ {& Z+ y- m, J9 n, G$ [to initialize-settings: h7 d2 Q$ L: e# A; T* v, c
2 k6 a2 X8 N( C4 O% i4 r1 B% @% @
set global-reputation-list []
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set credibility-list n-values people [0.5]
1 r0 k4 q. z- Z3 ~9 P1 Y

$ X1 I4 {0 Z7 ?% }* Tset honest-service 0

0 n* {5 N. y6 C+ A2 d  f9 H2 X- M# X+ p
set unhonest-service 0

/ m" C2 l+ u1 T$ \
4 O4 ]5 h: F. [6 m2 a+ }7 Tset oscillation 0

7 d5 n' ]' v* l4 k5 v" J0 I- F. D% ~
set rand-dynamic 0
7 B* F4 L- M# @2 v2 w* w- O( ]4 j
end" ]5 ]. d9 z& X# a, o3 c) ~2 U/ d

' ~0 ^# W% _5 `  Q- ?, D# Pto setup-turtles 3 I8 d9 i$ Q& S* w# N: X" W5 \2 B
set shape "person"
. x7 W0 T( E' Q. vsetxy random-xcor random-ycor0 l9 T" ?6 i! f/ f) W* t
set trade-record-one []
0 D% g  O1 B* T1 s. k* x4 V8 D3 Y
' T2 T1 h! ?# m+ X
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 n0 J8 I9 v; o4 y

1 G- B/ A+ d8 o7 l4 n' Jset trade-record-current []* ]/ u0 Z9 z3 _3 [2 ^! b; R6 c
set credibility-receive []
! n# r8 H# V8 j) G% mset local-reputation 0.5: \# B, n" P" y+ M: Y
set neighbor-total 0
# d9 l# M1 h6 \' S8 c5 Yset trade-times-total 0
5 u8 k* I  R: ^) q0 r% l% |" kset trade-money-total 0* u1 c8 O$ r) H# k5 l/ Y- U
set customer nobody8 C3 |6 S5 |; M
set credibility-all n-values people [creat-credibility]/ }2 t/ ^2 y+ F
set credibility n-values people [-1]
2 w4 E7 Z0 {. B- {( zget-color
2 }+ i$ [( \: I$ f2 {6 M: {
3 o- [" ]; c) J9 h& r
end8 O! z3 \$ o- I( u

; b( u4 [( I. p- fto-report creat-credibility
- M6 H3 l7 x$ G. lreport n-values people [0.5]/ ^1 g: X+ p6 p2 x& f6 I4 o
end/ D3 h& n3 \7 f* x
4 n+ G4 e+ U% D0 q2 q* u7 C
to setup-plots
6 E4 w( R4 k5 h9 ^
5 N$ w/ T" q: n( Q7 \& t) p' Cset xmax 30

9 Y* P! M6 @( m, A9 W$ r4 G2 h" l/ y0 N( N
set ymax 1.0
( n1 R9 E/ F; L
0 G9 r/ A. J  p% U4 G  f
clear-all-plots
$ K' U# Q$ q" L. g/ w

! `3 U% ~. {0 I2 |5 [setup-plot1

* g$ E8 o' I5 O5 r3 J% T5 |1 t; D+ ~5 `+ `% \" w  ~
setup-plot2

" D8 s2 h9 W7 I5 I& c" [4 T; v2 S9 O+ T! v
setup-plot3

6 e, r. u1 Q2 yend
; C+ U7 ?3 E+ `5 L& f& i) ]
. f# e7 K) F2 W- u;;run time procedures
6 \; _- H8 [6 |0 i& N0 g. z. L. T% j) f. k. z  E& j( A0 S/ P
to go  N& \* s! [2 A5 G$ X; s
; \# d" {5 `/ c  @7 b  k' w' J
ask turtles [do-business]

1 O' V' Z5 q3 Z4 n1 b3 e; @end# V8 d( [0 w# E7 g

/ G3 T* m2 @1 r- R3 l: X5 R  Ito do-business % q6 C9 W# N/ @
' t, z1 z6 w" `# k

! Q) R5 r5 s8 U" i$ ], [2 z+ Urt random 360

$ a+ F2 d9 C7 K3 x: `  B8 p8 b* A# D' @5 m) i
fd 1
' Y9 {/ x  ?4 u+ ~+ ]7 N
; T) |+ l4 G; Y! ^! m
ifelse(other turtles-here != nobody)[
6 R1 v- C8 Q; y- k! g

7 M3 j; T& u5 q+ w: @: `) {+ ?4 iset customer one-of other turtles-here
" h3 D/ p, [, @% @5 M- e
4 y4 [/ F. `3 W7 g9 R; L% n* k
;; set [customer] of customer myself
& H4 F0 f7 L* F4 p" @) G" ]( ]

0 M: }2 v3 B3 |7 @set [trade-record-one] of self item (([who] of customer) - 1)4 q- R. g  s5 x8 T, F$ l8 I* x
[trade-record-all]of self7 c4 y# L  T0 x5 \" U' @! g, h' a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, u8 X8 A' C) S  Y  N
1 a7 |6 ?& `; |; a$ ~5 Z
set [trade-record-one] of customer item (([who] of self) - 1)0 g/ u' y2 A6 _3 U  P9 {
[trade-record-all]of customer

' G( V, P4 Z8 E; \" O. ]! w7 {+ n7 z7 J4 G6 \1 }( e3 D3 ^
set [trade-record-one-len] of self length [trade-record-one] of self

6 c/ `, e4 o6 E! C$ T5 A( c9 J
' A" ^/ w/ F" Gset trade-record-current( list (timer) (random money-upper-limit))
& i& Z! O* M5 ]- t/ ]6 p

0 s* S" n: R" B0 @4 W# U' mask self [do-trust]( b6 _( Q) [( ~0 w+ Q
;;
先求ij的信任度
4 `, _9 K! W1 i6 E1 K+ K; m
5 Q- A/ t) w" Y$ `  `( nif ([trust-ok] of self)
% B9 p" A& Y9 N0 h6 V; K;;
根据ij的信任度来决定是否与j进行交易[& ~2 m5 U  a6 n- D' w- [( k1 J  A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) F5 u' {2 a" ]: h. l; \3 E

6 q! P3 o) Y! m1 T* i8 f. `, _" e[
# v9 s4 z* U& P+ ?& Y! [7 t/ U
$ W7 d0 d2 s1 e  ]) }4 R
do-trade

) v% S( e; g) \5 k) f+ H& @' M
0 b$ K# j& E, W; j) S# ]4 X1 yupdate-credibility-ijl

3 k" p1 l. ^' y) G5 H  Z- {( F2 _' X0 f7 |8 d/ Z9 u+ Z
update-credibility-list
( S9 j& F3 p' i2 ?8 E
; f) l' E$ N0 N( A* P; A
; X( g! x. ~* X0 z1 O
update-global-reputation-list

& p: ?$ y- M# R  f2 R" R  {- P1 H; |" F, I  ?2 `
poll-class
+ m; t( _6 U6 K. @
2 f% C! f! h6 i5 u  g6 [
get-color
9 R" f* N9 _& U3 k+ l4 f$ p
- Q$ E' f' X7 y$ V
]]2 R7 D2 V" n0 _5 s" X; U

1 G/ |( n3 y( t8 o" q/ j;;
如果所得的信任度满足条件,则进行交易1 Y0 A+ ?& I; z" g0 e) C" ?0 j

# f2 l5 W+ |+ D) ]! D[

- N' q) t1 B0 l8 B5 p: W0 j/ P0 |( S) l5 V: A% U  \3 b: ~! f( L
rt random 360

1 U4 y' p- J+ o6 B& w
6 r7 n* c/ {( u4 zfd 1
% M3 L6 ~3 O7 m5 |2 X" K& U- o7 x

- S9 H( u% b5 z]

+ }& A" A6 R, c: d6 L$ [# w# b2 C# {  \' f6 R4 K
end

$ I7 |2 y$ C) h% B) c( N* H0 ~5 u. R0 P6 ~
to do-trust 6 n* k7 X5 d2 G" E% I* H3 Q  s
set trust-ok False9 B& E. z- v* Y: c' P8 \4 G
/ `) ^  L3 h" Z9 A

- Q0 ^. C" a2 {: ulet max-trade-times 0  w5 `/ E5 J' R# S$ N6 d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- W0 [; N. M7 M. Q, ?2 T4 M1 mlet max-trade-money 0
& b0 G% o6 j/ R% z, |4 kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) f% k  o. |% t% z, ], z3 l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 k0 |5 A! z$ m* f3 B1 P* b  V/ D6 O( q+ ?/ Y$ W$ X
" Z7 L5 h8 ^- b0 V2 z/ @: B9 Y6 L( {
get-global-proportion
$ v  U1 U! g/ e5 m. h- C: Rlet trust-value. s2 D9 E$ T5 o
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, X; \, e+ U" _( L  ]! p9 r  ]5 Vif(trust-value > trade-trust-value)1 N; x7 h+ B$ Z& t
[set trust-ok true]* ?* ~; a) j. Y; }, C
end4 p0 q9 ?' ~6 {% h* Z3 h* R* A! g

! @$ R; v5 k3 \' C: Y& ~7 ~to get-global-proportion" H, Y( c( A& L+ I; B- q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ P  X6 c0 Q; j' d[set global-proportion 0]
8 z* j( ^* D. a$ _# ?  Q9 e[let i 0
. ~& P) f( B; p7 F' c9 olet sum-money 0
) l, z) u7 E, _8 Q! a' w. L4 Jwhile[ i < people]% N% |. v. s' z. w9 l
[
7 f9 N7 w; o3 z! `: f& `* Eif( length (item i
8 w" ~/ }* w$ }) h" r[trade-record-all] of customer) > 3 )

8 Y$ ~! @" E+ l  H* m- J; \/ ][8 O, T  H5 Q: X# `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); w/ I0 B% ^0 X1 j
]6 V1 E+ F8 M) \  U; V  Q3 ]& I' T
]- x) p* C7 _  R. F6 {
let j 0# V. i, _7 y* |- M; |3 e0 U
let note 0
9 B- Y( _" ~* r$ o) X; dwhile[ j < people]
, m, O, m: b/ y" I) v[
; D0 q  J: ~$ c7 e* C* Hif( length (item i% h, M( ~; J% Z2 [0 Q5 v
[trade-record-all] of customer) > 3 )

. M7 q, \6 s  R[4 h( ]7 ?* W9 I$ _) Y2 J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 ~& [1 @8 P7 A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' v+ ?7 y& l# \9 {) v& X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. t5 W% H2 G8 q5 \' o6 E$ P. v]4 m2 `! i! u/ ^# f! @, D
]9 a4 @. ]; U% U9 e$ R; z# ?
set global-proportion note
! C) B; z; Q7 k* z4 K, K2 _]
  I# S3 \4 W4 ]( d( s7 aend
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to do-trade6 ?* v6 a! |( }; a3 _
;;
这个过程实际上是给双方作出评价的过程
/ z  T5 O- w' H% ^$ Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 ^( v4 @" b2 k, ]( l, G' y1 v, Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( E, }  J/ v0 k$ Vset trade-record-current lput(timer) trade-record-current
( T" q3 m2 ^) K# [' l+ E+ u: \;;
评价时间0 O8 a. D, w2 m: G# s/ G
ask myself [% ?( J' M' i% N
update-local-reputation9 w1 i5 f# {# z0 R) F$ j
set trade-record-current lput([local-reputation] of myself) trade-record-current
  S2 s/ h6 `' @: I  v0 Q" o) R: H]$ w7 H+ w9 i. C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 b( h! v" I; C;;
将此次交易的记录加入到trade-record-one
3 e0 g& `/ Q: c5 Z" N0 [+ i8 ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, K- E. c- W- |: \let note (item 2 trade-record-current )) `1 L- E5 g6 A( E/ ], J; p2 A- q
set trade-record-current
- a1 {% }" K8 ~(replace-item 2 trade-record-current (item 3 trade-record-current))

: `  @; M; G  y4 F$ F# Z* Tset trade-record-current5 ^, w* o) _2 D5 Y& J
(replace-item 3 trade-record-current note), y- @2 a0 i; V
5 ]% U' T$ \$ N" W
& S& K6 o  f2 H' a% w; J7 P# v
ask customer [! X. j1 _8 y0 P2 {$ {
update-local-reputation$ k( ^# X! w! o2 ?
set trade-record-current
  m. c3 H, D5 v. D0 F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ ~6 w1 D  o; s0 c1 I
]& \$ e8 i" G, T, r  b& g) Q

; o6 X% }* h1 L

$ \: U4 N0 e/ x1 m* R+ E% f5 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 \8 J* A+ Q4 ?3 F& r) k
. O3 ~3 m/ ]( _  s, h% U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& ^! J. J% P- ~& |: g9 L) D1 t) ^* S;;
将此次交易的记录加入到customertrade-record-all
  S( @! F  n* W1 Zend
" c. Q& x, n% b. p* W6 ?3 }2 F
1 i( Z$ [  c4 {4 Qto update-local-reputation
+ L& L6 P% d4 @# qset [trade-record-one-len] of myself length [trade-record-one] of myself
1 N+ C+ S% l1 v" x% p
3 `5 `+ D7 q. N4 L$ G: F' N) y0 T' }! l" l2 y
;;if [trade-record-one-len] of myself > 3

# n; ]  W/ [% Cupdate-neighbor-total
5 L' i7 V3 M. x  j;;
更新邻居节点的数目,在此进行5 n( v7 C/ ^, p/ ], ?
let i 3/ U% H( N9 F5 k8 @
let sum-time 05 b, {# X1 G0 H) D8 |$ C
while[i < [trade-record-one-len] of myself]1 Z' y& U0 T7 S
[
, Y1 U! C* R" n( W1 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# u, u$ f0 l1 x+ y$ G; J& V+ m. O2 O  C
set i3 L  f, }# D& b9 X
( i + 1)

. e8 p. V' W# ?3 F7 b6 |]* [4 b2 X+ t5 O/ e
let j 3
' S3 g8 E. f# }! a& q% vlet sum-money 0
  \. q2 A- z5 `1 c5 ~+ \; Awhile[j < [trade-record-one-len] of myself]
& I9 ]0 F+ D6 m3 I- _4 f7 J6 q[0 {/ @8 L% g% v8 F
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)
% G: P: z, x6 f4 G; T5 d0 Fset j
! E0 D/ T. r6 `, ~3 S( j + 1)

+ O9 M  p8 ?/ m  d+ K" ~  r. []' o; }" T9 i$ }+ o4 q2 @* ?1 D: T
let k 3
7 H; Y5 ?3 _: G3 I& L: x5 @let power 0$ d8 n, i4 C- A
let local 0$ U3 X" g0 }3 q" m3 T9 c
while [k <[trade-record-one-len] of myself]
# O% s4 W. g( k  J6 u* R5 ?[1 ^" f% n" d, F' o0 A; u* S: O
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)
0 f0 D; _% K! ^# M& G" eset k (k + 1)9 }0 G/ J; t8 q9 ?3 a' P$ |! ^
]
# M& v; Z! s' E6 m* H# Fset [local-reputation] of myself (local)! p/ j) S/ [* \/ s. H+ W0 z, x$ s
end
, P; r; ?9 g' Z% ~+ u6 T
' w$ {' J  y$ x) m' [* E$ p- |# ]to update-neighbor-total0 x% t+ U4 N6 R. }3 v6 `4 W, E

5 q0 D- c, k; Y6 v9 Z6 g% F1 Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* T, Q! F! B' c, X% o" D) c5 T, i* R1 b4 _

5 n7 G0 ~, a" V7 Q% @0 G4 uend& o! l6 h& }) V' z9 j
% ~( W; o1 t" r7 E- @
to update-credibility-ijl , }' C  ^8 \: w2 T

6 }1 {( f& @/ |% |/ x;;
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。
: B5 F/ B5 \2 b9 _let l 01 \* C9 r$ \3 x9 M  q$ o* \2 G3 M
while[ l < people ]4 s) y. d6 b( A  t6 X$ p
;;
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
1 [7 ?0 \/ x1 J3 K+ R[
, u& E3 z3 y2 {, K$ q, _) }) Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ k  B' H) ^  M# h7 _$ E2 vif (trade-record-one-j-l-len > 3)) P. R/ ]1 r1 L: u* K
[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- r: Q9 a1 S' v/ B, |8 g, n' `; _
let i 3) A% d: _- L% U
let sum-time 0
: T' N8 w" Y) f( Q0 ?, I: lwhile[i < trade-record-one-len]9 j; f3 j+ b% ?# Q
[7 O' Y8 G. C4 A$ ]3 j/ G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 ]- r- n9 \2 j3 r, \$ Jset i
/ C8 J$ w- n- L( i + 1)
8 T! G& `, {0 K
]! c& m5 ^2 {; Z: u( g3 `0 q
let credibility-i-j-l 0
1 Z3 d( z4 V3 A) y8 g. c;;i
评价(jjl的评价)
3 p4 A9 p2 Q  ?4 D9 A; Rlet j 3
& i4 ~; I5 i) _( `let k 4
8 b; r2 d- J" `2 Owhile[j < trade-record-one-len]
5 q- B; q4 S# B, ]& |7 D3 I/ d' v[7 @! I) I0 S  f- ^7 b8 l  q/ w
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 j+ I6 X' Z# B5 a( g( Hset 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)
; w6 B3 x% j' t5 ?* {set j
* \+ K1 [; v" r+ B5 I! J; y! ]( j + 1)
' Y% S: m" P7 M
]6 r: L! _! M3 k0 S9 C2 K2 q3 C5 v
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 ))) E4 V7 f: v# i* P" u9 j4 q
5 z! r6 ]9 J. t2 M* V9 s
6 s. @0 _( E# x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 P' V* Q, @& x+ x0 T' ^+ D;;
及时更新il的评价质量的评价
7 N& \5 t$ G( ?6 i/ j/ S& gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ C' H1 @3 x, f( @$ Cset l (l + 1)
* \0 N1 x7 M* D* ^8 ?3 M/ R; G7 L]
0 [1 }! }# `2 y6 X( |* |2 G' `0 W% xend( O( a$ R" V; `& C3 B- V
) V0 x' K( W  b
to update-credibility-list
7 M; m: p1 z2 s( V- E( N- c. k2 elet i 0) s7 b( p, u, f% K* k
while[i < people]
& c8 f5 x! w+ ^- v' B' @% m5 r, r[' U; L1 c. A5 _; U
let j 0
8 ~6 S  v; {9 |let note 0
* ~% N) j! F& t. h1 ulet k 0
9 i& }* B' i( @% x% Y;;
计作出过评价的邻居节点的数目- }( z" a4 l% g  d: L
while[j < people]
0 o+ B0 b9 F1 S" d% b[; f& R8 d- G0 Z
if (item j( [credibility] of turtle (i + 1)) != -1)
/ ^3 \: ?  t2 k2 y. F% q6 ];;
判断是否给本turtle的评价质量做出过评价的节点2 Z6 y% a% N6 U) j% h  |
[set note (note + item j ([credibility]of turtle (i + 1)))
- X; J7 O% _% s# ^3 P, F' [4 Z;;*(exp (-(people - 2)))/(people - 2))]

. W% R4 l, s5 A( A# v$ K. @set k (k + 1)
* y: i, H, o% n+ l/ A% T" I! t]: Y  A; l; u  I9 |/ v
set j (j + 1)+ h8 k6 U# o7 h" q
]. }7 T1 F2 B# D( P& [6 I) q
set note (note *(exp (- (1 / k)))/ k)
( [7 h6 s- I2 ^/ B3 _0 Uset credibility-list (replace-item i credibility-list note)% M( O' X: b0 ^: f) n
set i (i + 1)
5 U3 I/ @6 l3 |" x" G]
4 B" m" B; _5 r+ y( m4 r! P6 pend
' d0 ~! V; E: R$ r4 n: D2 {( [6 d( m3 i6 o9 P
to update-global-reputation-list
& r" j* E$ a  l1 n( Rlet j 0
: _. u* s; J* V7 Qwhile[j < people]
6 f0 ~3 d3 }9 _" M, \[
  }  e3 T! G& B% m% Ylet new 0
0 m; k( C2 R" |9 s1 x& C4 u;;
暂存新的一个全局声誉2 q' R7 t+ I0 T* `
let i 0
8 w& L5 ~3 ]  m' u/ e+ ?let sum-money 0
. w+ ]8 f$ |7 dlet credibility-money 0
' ?7 ]: i% t1 Q3 H: a0 Rwhile [i < people], x/ h+ U1 E8 s5 V, P
[
/ x. q0 P9 `5 L: p; k4 qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 O- |7 k- Z  [6 R7 Q0 w: }2 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 g  D# ~2 Y; c4 y7 Kset i (i + 1)
. [' f( D& u& D8 s]- y' R' f; d$ H
let k 0
1 I  N4 r& L* H3 C  a' V) Alet new1 00 ?' G- C! R& r/ p' @
while [k < people]
' ^; i" c0 V" F2 C9 G6 P# T7 v[0 E( X6 c" m* i' R8 C, O8 `
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)
) w2 a7 }4 Q  _3 ?/ Oset k (k + 1)
# n6 h, O- V8 A% M) C: d! u. `]3 m; z0 v6 t& U2 O; Z# T4 v0 N9 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 `' L  e9 o- ]0 O
set global-reputation-list (replace-item j global-reputation-list new)1 Q0 P1 }3 q4 [
set j (j + 1)$ {9 P  A5 b: x8 H9 T) ?8 M
]
. e. Z3 g3 o: Jend0 Q$ x: K4 ~+ B0 i  A
, h3 c- F8 d2 G6 @0 R3 [
' S1 V; O# o6 P* e# p1 L
  s2 j% C7 n3 I
to get-color
7 c7 n. U: T' |8 n! k3 G5 r$ L
( r8 {$ [5 ?8 E9 o0 U, d' v4 vset color blue

2 a2 a  o9 ?$ nend
: C* J. v$ \5 _5 \1 j
% ~+ D0 O" @8 E2 u# Y) E) ato poll-class
/ F/ v5 a3 m2 |end5 D- t+ T: F1 Z' K6 F
; C7 u5 \) \" e  g( K& A+ W4 o) p
to setup-plot1
0 @$ ?( z1 L+ a; d) \5 @# p; w" H; }3 u( U( t- x! s6 z
set-current-plot "Trends-of-Local-reputation"
4 t1 T6 X" h/ U9 ^8 T; P7 z4 w6 D

$ X$ v3 c/ p9 M7 J3 `* `  O9 S3 ]set-plot-x-range 0 xmax

9 E( d' y2 ]8 h3 ~/ G. O. y, ~- P
set-plot-y-range 0.0 ymax
; E5 ~, X! g5 I3 b6 j7 p% Z
end8 u# r0 i4 a' j9 T
) ~) c! c+ ~8 ~( I; X& a
to setup-plot2
: H, v7 o7 g: ~3 I/ }
) D/ g8 i( p7 p5 Q$ rset-current-plot "Trends-of-global-reputation"
% f. y" e: ^6 W7 W8 [, y
8 q+ [; _3 x0 m! k5 q+ m1 F- }
set-plot-x-range 0 xmax
/ D6 ~/ r2 b% b, S) q5 h: o# O

' ^  `3 t% B3 P+ ]/ dset-plot-y-range 0.0 ymax

( V" F* M, F7 ]7 M! Uend! ?7 I3 s- [8 p" J! J) v1 F# m8 ^( u/ W
, Y7 R& \/ M. D6 Y% a! Y, |" K
to setup-plot38 w2 Y. r+ X9 s
6 L! R$ i* J9 T5 ?
set-current-plot "Trends-of-credibility"

& n' L3 \4 S- E- _1 c! L2 n7 s5 }, _! o9 W# t
set-plot-x-range 0 xmax
8 n8 [( w  }" ?# `" e+ C5 U- j! J

3 E7 N: l. ]! e9 P' Lset-plot-y-range 0.0 ymax
+ E9 P3 I0 c$ M5 y! Y, n. ^
end
; Y. ?0 e% V! w* h7 Z
! p4 @# F# O( s8 @2 {, W! v. \! zto do-plots
; G6 s) Y! C9 n! ^! mset-current-plot "Trends-of-Local-reputation"
' e* A. R- p% T' lset-current-plot-pen "Honest service"
2 ~% V2 E5 y9 @! R5 J+ T' b3 `end: [1 K/ `$ C! E6 s' n6 k6 A
, h9 q7 q" @8 }& `: p  n7 e
[ 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., ^6 N. |2 [2 j: ^. e" t( |; z3 U; ?4 n

0 l9 ^/ x' _" e  k- b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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