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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 P' M: l2 s' \to do-business
' z; z' j; [5 }/ m' Q8 P- t rt random 360; T9 z  C( p2 m1 U
fd 1+ \. ^. H; r! S; f; r2 S
ifelse(other turtles-here != nobody)[
) E& e7 d2 U2 o9 M  _8 ^3 I7 f   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.
) I3 n/ V! R( E) O3 R5 K0 g5 \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* P$ |7 I$ ?! X  [% l: M$ G. R: O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! X6 T; c* W. G3 ^
   set [trade-record-one-len] of self length [trade-record-one] of self# \6 w; {" J1 q0 b' T1 x
   set trade-record-current( list (timer) (random money-upper-limit))% Z0 ~# b8 W  G. @3 W3 i4 f

6 Q' s& N7 `! Y4 ?! Y7 e问题的提示如下:
5 x# k( H, J' `0 N' _+ p8 P
$ `% ^" ^+ I$ l4 y8 I) j# c/ ]9 d8 ~error while turtle 50 running OF in procedure DO-BUSINESS
- R7 b2 }4 {1 w9 J  called by procedure GO$ z$ g% F6 q. p3 L7 D9 a+ N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& N, `& l# k8 ?4 _2 N* A
(halted running of go)
8 _0 z9 J, r* T7 E  H) f) m
3 B7 Z  l3 x4 S# D) c* ?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~~0 I& ~8 K! [% j) o
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
( d! Z% _& {) Y$ c4 k) j" u: b3 Gglobals[
) d% I! r$ v6 Xxmax) j" _' [9 H* a
ymax
( T* Q4 V# ~( lglobal-reputation-list
& T5 P! X. y1 t# R% w
7 ?- f; e# _+ j6 g7 E/ R; f: R& };;
每一个turtle的全局声誉都存在此LIST3 m0 S; K  G  |. G* l
credibility-list
) M7 W3 b! x' _1 U& P+ p& _# b;;
每一个turtle的评价可信度0 d, U  r* U$ F6 W
honest-service6 E' \4 S# B3 T- ~% ~  C
unhonest-service
' \# C4 f9 }! F9 S7 Woscillation* T7 q4 i2 S7 ?, J
rand-dynamic  K- t; M* ^# |' w) m/ K# g. k7 q
]& c1 u' R5 l( d

" E' i! T7 l! N6 w% {' Tturtles-own[( I/ g& z; v) B! e4 [& i
trade-record-all
" {1 l' y; r$ ]: l* o& o* I;;a list of lists,
trade-record-one组成$ d% x/ X) l. i" W9 ]
trade-record-one
' _! w* w$ N) \6 o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" V# c2 j2 i( u+ d! w) T9 J
6 _! i  Z: q1 N9 T$ V+ d7 D0 u% |;;[
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]]
) \, P& k# w  }" x3 gtrade-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]
7 R7 o- X2 b( C1 fcredibility-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list1 @. C3 p9 R4 W  G
neighbor-total
& H4 b' ^- Z3 H- J;;
记录该turtle的邻居节点的数目
7 N! U" L' M+ f2 Ptrade-time. H, @2 S* |* `
;;
当前发生交易的turtle的交易时间
- S3 U/ Q: L6 Q2 Tappraise-give1 e& Q/ N8 j9 K- b. N' w0 B2 V
;;
当前发生交易时给出的评价
7 V7 h2 Z1 S( U" N- G$ ^appraise-receive
! i1 W0 D* B9 H! F;;
当前发生交易时收到的评价
& o; h; l! U/ G3 dappraise-time: S, R  q2 _1 y3 Z& g1 e, ^
;;
当前发生交易时的评价时间
1 O1 h  `  F' w7 e- H3 B6 P' Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( M4 t, R% n+ b) J
trade-times-total
) t  R8 W" ?! X8 l$ A;;
与当前turtle的交易总次数
5 H, X& P" D' Btrade-money-total( ]* _/ p1 L. M! D& W
;;
与当前turtle的交易总金额
$ J8 f2 K# n; d- blocal-reputation7 K  T* X9 M5 ^* ^8 U
global-reputation/ _4 S: l9 g& t
credibility
  a4 b) F& G& z1 t: `;;
评价可信度,每次交易后都需要更新$ h  L/ H0 i2 m; t" l6 \4 v
credibility-all
5 Y- e6 O$ u" |: X; u;;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( U$ i; V7 _8 i/ e6 h2 \

3 n- g7 G2 y# Z# \( [: m;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
: ?, m& p2 I- qcredibility-one7 I% ?. ^( F( a
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
% ?  |9 N' V8 k: @global-proportion
+ j/ G# o! G6 }5 L8 g/ b& Xcustomer% f4 p; a: B5 p" z
customer-no/ [6 U, h% V% a3 }3 [6 p2 ?7 ?
trust-ok
# f: F# m9 }: C; H; u* E* ktrade-record-one-len;;trade-record-one的长度7 y. D1 \/ i: g2 C& C, o. \) Q
]
: Y0 _: _5 u& h( S
0 t% l, Y- G6 o1 T# e  S' g;;setup procedure
$ O3 g6 U! [: A1 O" K
' t) U( j8 T0 S" w: b! Lto setup  c" w7 A6 G% \/ R! m4 v
' M- g' c! d0 M' H9 r
ca

4 }/ w: E* `# @' f% r. P& \5 O- K# D; \0 ^
initialize-settings

. P% s+ {" h) ~" j( }8 u2 I5 |/ N* ~( O$ i
crt people [setup-turtles]
6 N5 {. C. W3 l8 F! Z, ^; a8 n
( I: x6 n& ^3 q- E* O
reset-timer
# }' n+ B; }7 o
( S5 ?: E* N8 Z* F. }3 B
poll-class
  B6 {* V( i6 `5 P* u) U
5 n' E8 T2 q9 p6 S' {
setup-plots

. J; \+ ~8 Q' h; V
  E7 {- G- r! x4 K& Udo-plots
  a4 ^4 w# v7 x8 c  {  r8 A
end' b! n  R6 S  G$ e0 Y4 S

! F" y' K9 g$ [/ k1 mto initialize-settings/ M( A# V7 o- i. _1 T
! y( V" F# Z' B0 `& j
set global-reputation-list []

. `. H: r, ^3 X5 O" V1 n/ X- y7 @4 l2 C, T/ Y4 i6 I
set credibility-list n-values people [0.5]
4 K9 }& }; \. l( b2 B, |
" |! _4 ]/ }* p7 _# e) e
set honest-service 0
. D. l) T8 i) \
) t. n7 k+ }# }% E( C
set unhonest-service 0
1 b' b% {% Y' u9 K

5 y0 f; j5 I- I: _set oscillation 0

; ^3 Z1 a- x1 D; x* b! o( n& V) r
set rand-dynamic 0

9 R$ z2 C# v4 k& h, L) ~9 Yend
$ q  G* o. U2 w& i; }9 Y; ~3 a! [+ j9 c( d" c5 e9 b2 z
to setup-turtles & @6 x- A3 h" W
set shape "person"
# e; x1 @8 X% s! n) l) V2 y4 e$ Nsetxy random-xcor random-ycor
8 A$ I. q3 J9 iset trade-record-one []
  B: T* n1 o2 O7 @

/ B5 _9 E, ~4 c! Q2 i: q( Z1 h7 |set trade-record-all n-values people [(list (? + 1) 0 0)] ) y4 n  f' J) O% ~
$ B2 k; r1 m5 V
set trade-record-current []( F3 a( c/ f# p  m% r( c# D
set credibility-receive []
1 ?( y3 H. c! x2 u; C% pset local-reputation 0.5
; ~! }( p  Q% [5 Fset neighbor-total 04 O6 V( I5 C: V& m. z! e
set trade-times-total 0. F- U" L$ t$ p2 `. x
set trade-money-total 0
- S8 V% k$ D0 A' \* j% Xset customer nobody( d% q) ?, x( W: ~( K6 A8 n! j
set credibility-all n-values people [creat-credibility]. q) Q% p- \, A3 c
set credibility n-values people [-1]
. s: E) C8 d: E2 A" G2 y0 }get-color0 H: b+ z! J3 O" C4 r- C+ A
$ [! K9 b. u6 K9 d; a* F3 D
end
% Z. S  f7 F. X7 q6 f7 R8 k+ K+ P# Z! `( u
to-report creat-credibility+ z* @& v- N$ f. g0 D
report n-values people [0.5]
% z1 W% K, E" x4 K; o) qend; k( q" o: o. ^

! G5 P; n9 e/ N1 T( Q* m$ a3 E6 Xto setup-plots
9 f7 I4 {# L% |- N- s- D' h9 z! Z4 z. t
set xmax 30
- N* j( F2 A# a8 q" S4 c% c0 t$ {: g

6 \8 b$ F+ h( P  E; wset ymax 1.0

) ]' P4 V7 k* B& A+ ]' j1 v# d
8 \! W. G! B) w5 Vclear-all-plots

  s' y' b, O. p* j/ d
- n8 j/ G- }3 N: K3 t: Zsetup-plot1
; v# }: M$ J2 l6 Z

( [. y, G1 S/ D! O; G2 |3 t: Ksetup-plot2

. y- d1 J2 j2 x0 X0 K' Y
+ O3 L1 Q2 H0 I9 T/ k" Esetup-plot3

: X* `. b1 u8 h. uend" S7 g6 A) z6 C, P5 r- S3 C
. X9 r8 X/ u7 s4 W# j
;;run time procedures8 ?5 X' O8 Z' s/ {5 ^" _

7 D: F, k5 F; W/ Rto go
; Z1 A% }3 D/ }" v8 N. v6 X' T) d' L, ~" k. m0 }' r
ask turtles [do-business]

$ u- c% b! z( g* P% bend4 K# ?! M1 J" \/ n) H
: a. v' Q  D7 F* V
to do-business
# P  x% x. _/ r
8 E6 G; i0 T. o& R! ^
; [- ^: x  W. a) s
rt random 360
8 B( F' [4 j8 ~$ K& K% l
+ v2 y1 T- l# D( `
fd 1

- s( ^" C% I3 ?( `7 [1 `
( z) g5 I6 `8 C; uifelse(other turtles-here != nobody)[

& n3 B( h$ z' \* ^3 p- r$ T. N# q, f6 V* n
set customer one-of other turtles-here
; R; s/ I, p* ?' i6 w: y
) y9 P4 B) D9 V+ u, G; A
;; set [customer] of customer myself

1 r0 H% j! {: d8 C* c" n9 ^' o2 f  n
3 |; I* Q6 b  H$ Qset [trade-record-one] of self item (([who] of customer) - 1)4 k: r. x* B/ p9 n. T" X+ f5 W
[trade-record-all]of self
7 o. _% t- Z% G- x4 b0 P; |7 y2 u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 `6 `$ Q4 ]6 H6 L  E9 g; c3 W/ O
( V  B0 e3 ?7 k$ z6 f/ _
set [trade-record-one] of customer item (([who] of self) - 1)" `+ S8 u( k: y, \
[trade-record-all]of customer

- z6 q7 @$ I+ X/ G- q+ F2 c0 k, e9 z$ M& H: g
set [trade-record-one-len] of self length [trade-record-one] of self

- o) y  a, h, E2 i0 D4 h3 R0 A
! h6 U! I- E" U( K7 O% h. n% Hset trade-record-current( list (timer) (random money-upper-limit))
5 r/ E) Y- F* _# D5 M' P, k0 j
& T4 T. c' b7 }$ G( U  I
ask self [do-trust]' ^( O5 \% s" T7 q
;;
先求ij的信任度
" ^6 S5 S# N0 [' [# }) P4 F* F# b+ j, h! R( \, Y
if ([trust-ok] of self)
. Q2 ?/ n# q# N! A* ~" ^' X;;
根据ij的信任度来决定是否与j进行交易[
  B9 M, E$ H" P, m3 L" M/ t# iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# D: O( P! X4 K3 g7 p2 L
& g& g) {; e3 k/ ~[

' Z% r0 T& _( m# l2 {! D% L5 @# b4 n6 H
do-trade

' J! ^% L1 n7 a+ `% d9 N& b
6 J+ r; c5 j9 j) @$ m4 {9 Yupdate-credibility-ijl
" f# o: I' y; P+ c3 Y4 x
0 k# Q: J* n- O
update-credibility-list
; d6 Z7 w5 r1 j4 N  X
+ O5 x* `6 y  C; G1 |

- K7 X; b7 H3 f: o- Z7 m! I; Tupdate-global-reputation-list
8 r; f, ^7 c( `* h$ g! c

9 E, B; }" j8 v, ppoll-class

  r: q3 N( B" h! K! e" e2 h: d. x$ h; [2 b5 Z) G
get-color
( O* p! h/ J; H) g! C

* p' o9 t" u* T1 g  u9 e5 D]]
- ]1 C. g2 t9 n" s( n4 `- t( ~- I& \) Q6 z5 g8 F* Y
;;
如果所得的信任度满足条件,则进行交易9 u' Q, s% L4 n- w. D# [
) R0 M( t1 L3 G: ?2 y2 c1 \
[
# e0 s- v* \- d* l
5 F* q- Y4 @  T
rt random 360

, K+ p( |% s$ E1 d1 [1 B4 `- m' o( j
, A* P3 l  _- @( i. p  cfd 1

  H% }2 n- O' p
6 v* {) ]+ ?6 z/ L& B+ Y]
. \* Y4 ~7 {9 [% {, _) ]

" G0 W" D% p+ B# hend
9 T% h, J  P, Z0 ?5 k5 ^

& T9 W1 l4 c# `9 z8 r, U& c- yto do-trust
7 C1 G5 S, z+ c# v% S8 r/ Jset trust-ok False( ?  e- [0 [3 j! \* S  S2 k
9 J5 @2 g. ~) A) D9 w

5 M' \4 ]* y) O0 m* Elet max-trade-times 0
/ ]0 _7 g" u3 x0 a; }' cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; O9 K9 }  b0 {* g5 r* ilet max-trade-money 04 n  r0 q- _; s2 {  M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! U! e% Q3 Z2 \+ P- llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& Y4 d# z! O- k9 w9 W
( N4 {# b8 G% W0 \" X, g
: T6 N* C" z% X8 }; a7 K( q4 s7 P& C
get-global-proportion
2 L; }6 n* ^7 |let trust-value
- f9 ?! s6 g, J7 p; g! m. ^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)

  I: O' |& l& ~- V1 ?6 }if(trust-value > trade-trust-value)
/ Z0 B+ U! Q8 I' T7 ^: a[set trust-ok true]- B' r1 c6 c9 I; F. R
end0 g7 D6 j2 I, P3 Y1 A  ]7 Y7 Q
) {7 x, D+ v! r' j- g9 N
to get-global-proportion
/ Z4 }8 e2 K& h3 oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ r# v6 z" H' Q# q: i0 e5 \: D[set global-proportion 0]! }7 e# j7 V6 l$ C
[let i 0; E; V) c  f; ~
let sum-money 0
$ M9 H2 u0 q- h9 D7 S& f& D  F  @  s8 \- _while[ i < people]
" x/ @* g% w7 y/ [! L) c[
; d0 S1 R8 Q% N; z$ N/ Sif( length (item i- H2 k# R0 G3 x
[trade-record-all] of customer) > 3 )
, w' s; d( k) b# P; J
[
* z7 [0 \2 u8 \! Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# ?4 O+ k, M. B' @- N- n]2 J# E6 X+ O& Z7 U
]6 W0 a2 @( \8 Y5 U# K$ H+ @
let j 0( l. A' V" Q3 l4 Y1 B
let note 0
( F4 x& A9 E; N) F4 twhile[ j < people]1 V3 k: J+ Z; [- M! F1 |* g
[& v. t8 Y3 o$ y* S
if( length (item i
  c. t3 c! P. j4 p& H7 V- q% Q[trade-record-all] of customer) > 3 )

3 H5 A3 o' a" E+ W' V[
! K  T  B9 u7 m8 r" {4 E; uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 f! o5 n: ~; m. C! x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 ?  O2 u) y$ \! w- h% q2 `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" V8 K; H: r- ~1 B8 k. p]! e5 U" C7 k( Z
]; Y0 G* w* R; G
set global-proportion note9 ]/ Y$ U6 G2 I) {
]
) D! D2 o4 G5 T2 t" b( Bend9 e  D6 L3 I8 y0 a

: A) h& t3 w7 l& P! Eto do-trade, l( Q) O2 K$ i% G) s: t9 M
;;
这个过程实际上是给双方作出评价的过程
6 b6 U4 v2 T& E) eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! R5 @* f4 Z4 R2 @2 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 a6 n2 N( u' O6 I2 F3 y
set trade-record-current lput(timer) trade-record-current
% [, N9 c) `- }# R;;
评价时间* z4 X- @; f9 ^( A/ e/ n$ h
ask myself [  |! `0 J' y" p6 _1 p2 j9 ^7 `
update-local-reputation9 P( u& z5 a! b# z* ?6 o* N' `
set trade-record-current lput([local-reputation] of myself) trade-record-current! d$ }" S* M  v8 O. G! W1 ^
]
2 s% e. c+ ^& @5 y, a: }8 O' U6 S% Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! \1 c8 u+ S& u" \; j
;;
将此次交易的记录加入到trade-record-one- ], b( F$ i; m9 G5 Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; c' A8 m) L' |let note (item 2 trade-record-current )
( r! g9 ?, x# nset trade-record-current
6 R) `) o2 u7 `  c" r1 p7 `3 D(replace-item 2 trade-record-current (item 3 trade-record-current))
" z# K' C  r2 ~! \  N
set trade-record-current  ^' ], B) z9 D: w
(replace-item 3 trade-record-current note)' o6 T* M9 k) M2 `1 A
8 O& {; q& |- S( Z" @

& {' S5 n% ^9 b( Yask customer [
* o$ N1 l/ |+ M1 D6 @4 F% t/ U: m9 k! Aupdate-local-reputation
* D' j- u; w) @  x; q4 v" Aset trade-record-current/ f- B! P# W, ^& c+ o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, ^: `1 }7 z3 L* N. @7 T
]
2 c8 X, v& R# G3 p6 Y* x6 P' `9 ?/ {& w! N1 }

, U$ p9 ]/ ^# |% xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 B3 E/ q! H2 w  z+ a

2 }- L0 }2 a  `  o8 L# b1 Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 w0 l# R  Q1 J;;
将此次交易的记录加入到customertrade-record-all+ W7 o1 m. c  f' q
end! l7 G$ P; G; L0 E4 k3 i6 a
7 f. G7 y8 l  W4 v7 e0 o
to update-local-reputation5 _/ ^: [) \3 k+ u2 a8 o
set [trade-record-one-len] of myself length [trade-record-one] of myself, f) a# }6 P. K; P% o3 O
  ^' Y6 U/ a4 v
, P& @. a6 a) j$ M
;;if [trade-record-one-len] of myself > 3

+ u# Y3 W% F6 U2 ]update-neighbor-total6 J3 S* _$ l/ r' b" a
;;
更新邻居节点的数目,在此进行/ b  ]! M2 S/ p  c( ?/ n
let i 3
* V* |$ N6 ^' w1 @3 [# rlet sum-time 0+ F. v* d* h5 ~1 z8 ?
while[i < [trade-record-one-len] of myself]
# \! t; B& k, t" D6 q5 n[5 R- V* q1 v# ?2 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 D2 U8 d1 x4 f# ]  cset i/ c2 S  u9 u/ K3 ?4 Z
( i + 1)
( v3 @. }3 Z$ j
]
) S! b' ~* y0 |let j 37 T9 O& N4 `& K$ |0 H: d' h% L! u
let sum-money 00 [# A6 ~9 A* Z1 B; A. }4 m
while[j < [trade-record-one-len] of myself]
! w8 ]4 b( F# V: _[' K- w  Q, L, w, F0 Q
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)9 d- b* _- P6 E$ C  \7 B* A
set j
9 Z$ c4 ]& t  a# `( j + 1)

( v/ y8 j: I1 t* Y]
# ]( Z8 N& S! llet k 3: v4 d1 f' {+ y4 r0 G
let power 0
$ L7 n( R7 U4 [# tlet local 0
3 x- D/ w; v4 d- m- ]# T5 Z6 swhile [k <[trade-record-one-len] of myself]
) {0 ]7 x  h: |0 }# ?[
$ ^& B# h1 l/ X6 m' sset 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)
# r7 f% Z" Z( T5 B) m# i. @set k (k + 1)
* G. [6 l3 C7 f9 |% Z' X7 o]' P( [9 J& J9 c1 y: D* H
set [local-reputation] of myself (local), b/ r# k9 M3 s9 q0 d* i
end6 S% u9 P) U) ~% i; r& X0 S! C
9 [/ G9 _9 K2 V  B
to update-neighbor-total$ a! _. ?1 b2 q" V4 p, V4 [

$ P) y) B4 v# F! S6 u0 g+ |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; L6 p* O0 W; O8 d) M  U- j6 g; ]% y* @8 d( F* j4 p3 E

* K- V& _9 D& j+ V  @end2 d7 b! V  W( l" Y. b! l' A0 G+ W

  {3 W. f- O6 b9 Pto update-credibility-ijl
7 _; S- [- |% q/ Y5 ]1 W/ v, ]7 _# [& P/ Y( p' `, i
;;
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。
: [8 U2 A) W& ]# F. G' Qlet l 00 Y1 x0 ]" y( G" v
while[ l < people ], E5 b8 ^) P$ t1 ^, [" v/ _% x
;;
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
% d# [- |1 [" N# J[2 J7 U1 b# S  b+ s% I8 Q. s$ W" @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" m5 p8 j4 ?1 @, b8 W3 {if (trade-record-one-j-l-len > 3)
% z' T" U! J2 c& d5 W4 z5 J8 p$ a3 O[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
* C* P9 h& t. f% z) j1 Ilet i 3
1 e5 f/ a; m( v1 elet sum-time 0
% H' E- a0 E/ ?6 L  U: {while[i < trade-record-one-len]2 Q5 t9 g. w6 M0 Q7 z
[7 Y+ y* O; ]1 K* f$ F1 z( ]- A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' P5 l" ?2 W  ~4 xset i
, r, X( g$ M2 K) f( i + 1)

- l- t5 E1 a( {: ~]
8 j- K% ?. ^( }1 Alet credibility-i-j-l 0
9 X* w; z" o8 V' F- x6 N;;i
评价(jjl的评价)
6 D5 B& [2 B) ]let j 3  x# \- r( q; t6 c& v- Y
let k 4
9 I- S# J. x$ o0 I/ v: jwhile[j < trade-record-one-len]
# V* j& s8 Q- w+ n, }1 S[. k$ f9 T0 P! M
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
# M; h( q# v. c& `& M( C6 @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)
" q0 q; z! j7 M( F2 _set j
. @: B" X: z) t. F( j + 1)

8 u( J/ S! m2 i; c. g]
: |. U( f, f  t; q- S% W# oset [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 ))! Y8 D+ q: W( w- s
9 r5 h4 a- M5 C3 r8 s$ P8 r
0 h. U, a1 a  g: s4 c1 p7 L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) u+ }, l% y2 s5 h9 l, S; _) @
;;
及时更新il的评价质量的评价; [# X9 b1 V+ J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( Q1 ]$ |& D) e* b' Gset l (l + 1)
" w* p1 n7 s" ~( ]* a5 F# j; \" P]! o8 x2 d: n5 {) A4 K- o
end: Q$ v7 s; m5 ]/ h

9 C# }  @" u4 i# L& ?- H$ N& rto update-credibility-list* l" L$ Z6 m- C2 y& F
let i 0
6 L8 x* A2 p7 {; x* z3 W+ g0 Wwhile[i < people]% e" A2 P% X# w: w. h2 f- \1 y
[
3 o: a  F6 |6 n( ?1 Clet j 0
7 `! {7 o: l$ l" P- |% h' v4 ilet note 0
3 s  V4 G2 z% I" y, C2 X/ zlet k 06 {7 q( L1 r8 P1 j1 d
;;
计作出过评价的邻居节点的数目
  V1 m- H0 j4 k7 ?% c! twhile[j < people]
8 q0 n- p" {7 e' o. a[/ w2 E( j& C- g0 `5 d' P
if (item j( [credibility] of turtle (i + 1)) != -1)
/ `1 g$ S/ Z; I5 f. @9 d;;
判断是否给本turtle的评价质量做出过评价的节点
9 N0 o0 d9 r9 h! e[set note (note + item j ([credibility]of turtle (i + 1)))
( B1 P- m) B8 z, j5 }# {; E7 W;;*(exp (-(people - 2)))/(people - 2))]

2 m" x% K8 J8 _) B0 W9 Uset k (k + 1)+ K1 b+ [, a$ c1 N/ ]% j# P& h
]5 A1 V/ Y* [( E( O
set j (j + 1)
& J$ s% U% U+ n, ]" H]4 [% U1 _( @( t1 q
set note (note *(exp (- (1 / k)))/ k)
  G# r( D$ L$ rset credibility-list (replace-item i credibility-list note)" u+ z$ S; i3 I. w% q  j
set i (i + 1)  b) W- N, ?- P
]% {) F8 m3 j/ @& ]$ Z% M" C
end
% |5 `# L5 x( x7 G5 M5 p/ K+ P
& g# Y1 m/ x& a. B7 |2 \4 wto update-global-reputation-list/ F' l4 P3 c, E% I. a
let j 0
1 X( N1 |* v5 Ewhile[j < people]
9 n6 y1 n! P/ [% j[
/ P/ J, M  q! g; \8 m% ^4 g8 Slet new 0* B% r0 A/ A& m( x1 G; Z8 |: B: ^4 {% ^
;;
暂存新的一个全局声誉
( U& y' u6 v7 q- S# _8 rlet i 0- F2 s$ i+ ?; Y- E) Y
let sum-money 0: v7 V2 Z* @1 h! |
let credibility-money 0
, b( t7 i  _2 R8 ^# ]" A6 M+ ^! L9 Nwhile [i < people]5 w/ e5 y0 s+ E" j0 k
[
! p* \% g+ T" O  \( L5 s" y* gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; w" `3 b0 O4 {3 Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- W, n3 e$ z0 [* U3 j1 y, E
set i (i + 1)% R. H" T5 A( C0 S5 s/ k; `: z
]
# s: K0 q0 u9 Q/ A/ R9 l& s) A( blet k 0
4 ^5 [! W9 x6 V2 Q8 q) @: Flet new1 0
- W  U# S2 `. q+ Twhile [k < people]
2 [0 A$ h/ s2 O" k* k/ Q[5 }0 w$ b+ E. q  K$ O# d+ }
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)" |& }1 o7 X( X9 F, W* _, P
set k (k + 1)
9 z- t# l' V6 V! h9 ]]
; V4 D( X; o8 l3 b  r# n) K4 Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 i+ x2 P* a, X1 x7 G0 ~set global-reputation-list (replace-item j global-reputation-list new)& {( `  Q: x0 h
set j (j + 1)
+ m& g0 ^$ L" f# g9 A6 J]( Q2 [" |4 |  A) E% ?, I
end# y4 ?) {- ~# x4 B* G- e# C
  O  a/ a& B. n/ N9 p! }
) q8 f* {% j2 L9 u& p
( D( E8 A& m) w) G# K
to get-color
) t/ K% n4 H: g: Y1 P; U0 v0 J; S& B  @
set color blue
/ o; W9 R& T9 c' S
end7 q  r" @* N5 ]4 a& R- v  l

! Z  j2 w" T% ^5 n" x* uto poll-class% }% i: O! d# B' @* a
end
! u3 i9 V' E5 Z4 R( Y$ J: E6 h# r" v& H" O+ |
to setup-plot1
0 j. A$ \1 ~- O( i# q1 Q+ S- h; X6 h4 N8 m
set-current-plot "Trends-of-Local-reputation"

, \' u. k9 o+ o( ], w, [0 ^  x( }0 k* h& j0 |
set-plot-x-range 0 xmax
/ R! M7 j# P; v: M
; `8 P1 `  `, j0 Z( C
set-plot-y-range 0.0 ymax
% Y) }8 P% A/ i- e1 S/ `
end' ]' G0 A' Q. b

. E( H) \5 |) P% V& f. Cto setup-plot2
( X% E% F2 C$ l2 j4 M" O7 H# G% |9 o7 f  H0 a
set-current-plot "Trends-of-global-reputation"
6 f% I+ t6 @+ H7 i7 n+ G( N

2 V9 v9 Y5 l7 e+ A) M$ nset-plot-x-range 0 xmax

( @# Q# O8 i. A- `7 D, Y  V
  c$ k9 N0 |4 p/ V& d, I; l# V: K6 aset-plot-y-range 0.0 ymax
6 L+ l  ]8 c( J# j6 R2 v; D
end' x0 x; e, z1 J/ n- y* h+ p

7 f* g: a% D( U  |- Oto setup-plot3
, \6 A9 X' m+ O, F9 L7 D# C' A& M" I7 a; E; j' s
set-current-plot "Trends-of-credibility"

- E2 n4 Q) d, k! f7 Y7 U
: |5 L0 }  N$ Y8 lset-plot-x-range 0 xmax

# |7 W) D1 e8 ^
% t; B, S, f% H/ d( lset-plot-y-range 0.0 ymax
9 D: I( ?4 c7 W! d8 a
end
1 N: c! M& @: y# {6 |% T* s$ F1 H) g$ E3 ?/ B
to do-plots
/ b- `6 }8 d- i9 L$ I. D1 {! x. Jset-current-plot "Trends-of-Local-reputation"2 o# ^3 C" N8 f/ ~+ C
set-current-plot-pen "Honest service"+ V" l6 g% G9 S  F
end
9 Z* o- M; r0 L9 U( r
  u" [8 h1 Q+ n' I6 g* E, p0 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.7 g& o% W& s4 @  @
+ D2 ~7 G5 Q' a3 s/ s  e
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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