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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:
* V. K; R0 G0 w, eto do-business
8 K1 [4 K# C0 X, |+ p& N rt random 3601 }" `" A; U2 J' j) b8 b
fd 1
8 I" _/ I% v% O+ _* V! f& g  T ifelse(other turtles-here != nobody)[
* m+ z1 ], V5 \, B   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.
* j5 ^& t8 c' y* y& I0 u2 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  l* M' D% Y! M5 N0 E  l9 ]  X   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! q. o0 C2 _3 e/ C' F/ o- F   set [trade-record-one-len] of self length [trade-record-one] of self
" b3 R6 M% ^% u6 f   set trade-record-current( list (timer) (random money-upper-limit))9 l" S, W+ T) x' T0 @; [4 b
6 R0 I" b% y% |4 P7 e
问题的提示如下:
  j! d9 h% }/ J: j& t. g" j5 W, p# q6 {! V9 a
error while turtle 50 running OF in procedure DO-BUSINESS0 h$ Y% p/ r) u
  called by procedure GO9 Q2 O- t7 N. v. \+ q/ |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 X4 ~" r8 d! y' p1 @; D
(halted running of go)
$ v/ J. ]8 B( i9 j( ~- P6 y2 |1 j
7 A; O2 l  W) F2 C- C( 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~~, F  q; Q# H5 U% x
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
) w0 }$ v0 u% P) L6 P8 G$ [, K. Kglobals[
, e( `; k3 r4 `9 v" `( K! [4 E" t* Uxmax9 c: f8 q' z+ W) O- R
ymax$ Y+ p) v( W$ x, [
global-reputation-list
6 P4 R6 s+ [3 m3 D9 \! I. _( J2 a! o7 f" U0 R7 W0 {, Y
;;
每一个turtle的全局声誉都存在此LIST6 `0 t$ p! n! w& e2 N
credibility-list
' d" Y8 T; f* n) H& U5 g9 n4 };;
每一个turtle的评价可信度
1 L1 I+ Q3 M+ u5 I% s9 hhonest-service, G- E3 L. F, w0 U3 y6 h9 A
unhonest-service
+ X0 E" ]( c) W4 n- hoscillation
) b% F& h$ F5 ]4 A, I: c7 }rand-dynamic* I% b( \5 f1 ?: P: ~4 J
]
& `! a7 n% v3 v( y0 h( f& u4 y: `
- f" ~" ?: }4 f2 z5 G2 j1 Iturtles-own[
  z$ W  W; M/ P1 Y/ ^trade-record-all# p! Z) C& D/ L$ p- F; d
;;a list of lists,
trade-record-one组成4 l4 @6 c1 l6 c6 `# q( i
trade-record-one
' C& z" S' c) E# C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, i$ p6 }: k$ A9 |( i" v+ g6 P9 n9 v
;;[
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]]$ @1 f7 v% G5 @) U7 P
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]
5 K( l0 Z) P# a# |1 z0 E4 @/ G$ _  tcredibility-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
4 |5 R1 d4 z- N4 V! c4 |neighbor-total
: X1 M3 D; k" b4 ]7 A5 S  U;;
记录该turtle的邻居节点的数目& ^% t* _) |5 D+ \
trade-time5 {2 h* X3 `/ n) i! V
;;
当前发生交易的turtle的交易时间4 O3 l$ z8 ?3 I8 A0 ]: p1 n9 q
appraise-give
* N4 U1 M+ R; p7 K;;
当前发生交易时给出的评价: \* N4 t6 K: ]6 }; L% H5 _
appraise-receive" Y  U$ M8 W: n& [9 k' E% W
;;
当前发生交易时收到的评价
7 J/ w7 M7 V. s3 w0 \& ~. n  Lappraise-time
, M9 \4 i, S* C5 J8 g5 h;;
当前发生交易时的评价时间0 n. {: s2 v" u" |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) w( q9 @8 ~( g. u4 v7 o7 ?
trade-times-total
4 U4 G# ^0 j( o4 F5 E;;
与当前turtle的交易总次数" H3 L& @9 B9 H9 \
trade-money-total
2 a: V2 a, v' w: |;;
与当前turtle的交易总金额
3 g  B7 D! ]' v& A$ v! Hlocal-reputation
0 F1 y  f- |# G; N7 y; Tglobal-reputation' z# W# N) J3 E% U! p! S* Q
credibility
* ]4 ^0 A1 q1 }; |  z;;
评价可信度,每次交易后都需要更新. R* T, X9 L' R8 T/ P5 N9 L0 E
credibility-all
* `* {6 Y# ?  w0 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& x) ^" V9 b3 T  X0 c+ D5 F  b

0 G$ t% S9 a. l$ ]; a! Y;;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
" Y% `# D0 w; b; Lcredibility-one
1 e9 Z8 r+ q6 E. \8 O* F1 @;;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people9 z5 }, H( _) F6 [
global-proportion* R0 S* G! p9 Z# f8 J0 `
customer
! z5 K, v, c) g- p) f4 ~customer-no# w, f) z8 D2 {8 ?) Q
trust-ok. J3 {9 H5 k$ a. O
trade-record-one-len;;trade-record-one的长度
  }5 D' l  h% S* z2 z% S. A]
( W8 }/ @& g! R, d% R
1 Z5 W9 S2 `' M$ X( H) _;;setup procedure) o5 e4 {" d! A) M
8 ~3 P, F- {% a" M
to setup
& }. ?& K1 u5 R7 w$ H
4 S8 G) s% j) M  qca
/ V  _2 v; i. b; ~
* L, p5 W5 T* E  }) e. {: q+ K! w
initialize-settings

- C. a2 u( ?8 I2 s* `! _
/ m1 a: o6 C' X. }0 @% |crt people [setup-turtles]
9 q8 N) m  s; R- t$ r8 b
8 I: F) g* E$ H3 r8 l
reset-timer
8 f& P: `  g8 K- m  M
4 |3 U; ?0 ^7 k) L  o- C* s, u
poll-class
/ B; |* O' N0 B  z' t3 r
- `) L9 P. y. I5 }- U7 g5 E7 K
setup-plots

- l6 m4 M$ i. G! W/ R7 ^8 {8 O
. g/ F$ }% \6 W+ {( O. X( cdo-plots

! c, v  }) j# {+ ~end
/ }; x1 K5 F' Z$ H5 g0 |% o$ ]0 B; D! O
to initialize-settings
8 ]7 H. l7 w4 h% F4 M8 K, u- M
: e3 v+ c: x, J5 Q* e& J0 dset global-reputation-list []
& X: o0 g# \$ h- j  S/ `, G

; U) J  l' h7 B( k+ yset credibility-list n-values people [0.5]

% D* c8 _/ Q3 Y: z! I# A
7 B- q! Z, P- Z7 uset honest-service 0

' f- {: o: L$ e: T/ E! ?& k
0 n4 ~. J' b' sset unhonest-service 0
$ z$ u3 e2 m$ a5 d

5 g3 ^2 @+ |( j) w0 B3 iset oscillation 0
  l$ h% O6 P% s' h5 [  Y" p

* r; v* p/ q. G# e" q6 p* S0 H2 `set rand-dynamic 0
( i; I; M' x2 y3 L
end, F- j7 D* c6 U1 R- O" i

7 I% y1 d+ P2 _" w9 U0 tto setup-turtles $ x: K; R; d5 K! S+ ]/ K+ n* q& X
set shape "person"8 U% B$ L% X/ a; }) v
setxy random-xcor random-ycor
0 t7 C' `' m, Hset trade-record-one []
+ S# s0 |" o* t/ `
4 U# x% \9 E* g) u; H# W
set trade-record-all n-values people [(list (? + 1) 0 0)]
& t6 W4 ^: ^3 S) d& t
+ P" `) p! t0 \5 T3 o1 g
set trade-record-current []- t0 ]- o# M; G. C
set credibility-receive []2 x: D4 F# r  {: [6 n9 C5 x
set local-reputation 0.5
. \8 y4 k, I( h" v: N0 `set neighbor-total 0, y0 R2 Y1 ^3 M- P" q* B- ], H
set trade-times-total 0) p8 P) x) _4 q5 T8 c$ J( C& x
set trade-money-total 0
8 a$ t  M9 C0 p; u" sset customer nobody
: J* r' l0 x1 e( t. d5 g9 ]set credibility-all n-values people [creat-credibility]- V, i% j" @. Q" B4 @+ Q
set credibility n-values people [-1]( C! a0 A( R' D* Z  o2 n
get-color7 T$ b  r  U( S0 X! w
. O* j! Z  w7 k4 H# L1 e& U
end
% m) j6 ^% h0 J/ ^" C2 J8 {
1 k% i% q3 E3 @( u  |to-report creat-credibility2 X& e3 k6 b1 Y, p
report n-values people [0.5]0 ?% S  |  Y5 S1 P
end
/ H9 R8 L. x- n
! @# B2 T/ o/ ?) eto setup-plots
4 p; j+ [$ y3 L: S5 u/ p. a- s( |& @' @" ?. D! |
set xmax 30

7 I( R9 S$ y2 @$ G: [! q4 V" e9 l' _% J  o3 @  N
set ymax 1.0

: |" z! m: R: w2 n; K, E) W3 Y
0 O- x- t7 r+ c& E5 hclear-all-plots

- Q- f% h' v- @8 R4 m* z4 M
: a! A* c+ M# f, l: k' o* O  C( Xsetup-plot1

6 R* _* O- e0 P! F5 ^0 ]
0 ^( W& s9 e' tsetup-plot2

6 U/ Z3 u$ _, [: ]& I* r
& J% x: _( U2 q0 B7 O6 ^setup-plot3

2 y1 z. F8 ]4 d# s" Fend7 L9 M3 ^& `7 U. k

7 b- y$ R# K& T. H/ F# \;;run time procedures6 ^4 M4 x) F* y9 G! V

# a8 P- U' L9 x1 zto go
6 w. ]* T8 {, A% \- O- I
: N8 N: L% H. ~' hask turtles [do-business]
1 S  e# C+ B% L
end
8 V% s, X# X' S# ]* E" i4 m( Z
3 N- b( ]5 n& m, f. [% c, Dto do-business ; f+ u. t. x7 X: T) t

/ G/ L* f, D+ g9 T* @/ a+ k' ~9 {# Y+ f
rt random 360
1 e5 n& i+ {% _  U
6 }5 @0 _: [$ O9 _& @
fd 1

! {4 |! o7 l5 `$ k" f( |$ `$ C. ]. o# q) D7 C* d; I
ifelse(other turtles-here != nobody)[
; i3 H5 V) ^) D5 _! s$ A

7 J5 n( |% e- M6 x' V* o" `set customer one-of other turtles-here
8 D5 x  \( g+ W6 }0 K1 S; [0 D

2 S5 n" {/ V/ T;; set [customer] of customer myself
: h9 f0 B/ c% L
0 q" A/ u6 H7 g+ V0 t2 K) f5 a
set [trade-record-one] of self item (([who] of customer) - 1)# F- ^  Z; C" P! a& `; Y# X
[trade-record-all]of self
: E# `: W' b8 s) ]" y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% _) Q/ K6 y- H" l
  O- _& q  r' `6 h+ F1 @
set [trade-record-one] of customer item (([who] of self) - 1)1 z1 e5 ^8 z% h7 {" |! D
[trade-record-all]of customer
& }& O6 b5 _) ?' i6 p8 _
& C) L; ?& a4 h* K
set [trade-record-one-len] of self length [trade-record-one] of self
2 Y1 k0 K" |( Y1 @# j

& M2 f  D9 m! S8 q% M' cset trade-record-current( list (timer) (random money-upper-limit))
% F: T. h# j4 B4 ?

% t+ \1 T3 Z( N7 U+ `7 ]4 i! ^ask self [do-trust]
& v/ Y7 |9 P3 L. \;;
先求ij的信任度3 L! ?4 i2 {8 d3 J: g! w! l: f* |

" B* y0 d5 W6 B2 e! i7 A  yif ([trust-ok] of self)0 V3 z1 I" j% c' C8 r
;;
根据ij的信任度来决定是否与j进行交易[9 p: i3 M" {7 n# \/ G$ ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- D, D" G) x  ]2 a1 `$ a' o  Y4 o" Y1 d' J& B( f6 @# ^0 U
[
& L3 S6 E8 E# @1 A$ {

1 Q) D2 \8 M: ?  }' Vdo-trade

! N, Y% M' c5 Q: n) D
! }- {  b0 t: V( Nupdate-credibility-ijl

+ P0 H* ?( F% D# u& v5 J0 `. S8 h
, e& M9 D! g2 [  N( E; @update-credibility-list
, O5 |, E7 `' E$ ]7 F; j' t. C9 ]
" g- T, C8 `8 f' c4 E& r

- K& Z8 E' L" w- k2 Yupdate-global-reputation-list
3 f/ D: Q8 Z' o% Z' n/ n
1 v+ L' e' P; }2 p4 W/ S% p
poll-class
" {8 e7 |$ C% ~5 g9 ?6 j3 ?' N
* @9 r1 \: x. Z& ]7 j
get-color

/ J: \7 B8 g3 z: E0 f6 W
" Z) E/ l# o0 O+ |4 c/ `6 p9 {0 ^]]% P2 K# r. |: `0 l
+ _( C; a" @. F, c- C
;;
如果所得的信任度满足条件,则进行交易" X, l- \; y' ^% Q

' q) X) f: w$ h3 s! N9 a[
  Q) Q3 D! V: q
. O! R% s( g7 H
rt random 360
1 w1 M6 o" B- J

/ N) C9 p# ^  u. R# _6 Mfd 1

. X) K  _* X/ B7 B8 v# f3 x* C2 H% I' y
]
& f' j& o, u$ C7 \$ C, @* e/ \

3 C$ N8 h6 v1 `  i1 c  k( R6 Kend

; a- c( b. Z8 p' ?+ s0 u2 [* h
1 Y" C1 i% v) d8 B# P7 C& Zto do-trust
; k% |) p$ n% g9 t$ i% mset trust-ok False1 c; F+ ]1 d3 Q4 G: c1 L
- ~  Z( v6 @+ Z, b1 M6 _

  r# }: j* U$ Z: ulet max-trade-times 0
! x5 P8 f3 s& e, Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! w  o3 t$ D0 s% _let max-trade-money 0
, E# ]% n* j' u6 j) gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ M; |  D0 P3 }. P. b* }9 r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) h5 |0 G, O" }3 A8 j; t
' B, K/ x5 r4 C9 N0 }
3 r" Q3 `0 r+ s3 x, |- N+ m
get-global-proportion
7 f) Z0 y$ }6 L) ]; b$ n) tlet trust-value* C3 h+ \2 P2 K* t8 T7 R
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)
5 k& _/ U, M# M% u
if(trust-value > trade-trust-value)
% Z9 m9 o/ {8 \3 e; q' ][set trust-ok true]& ?" A3 [  ^- ^& ^
end. U. N9 z; f+ }" D* v# _/ Q
* Q$ C7 f1 o8 W& v8 @
to get-global-proportion- s% [6 Q3 ~- l* o3 w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# p+ L) G% |# m  j[set global-proportion 0]2 {! y' F) p, S5 B
[let i 0# Q( p$ O) ~: T
let sum-money 09 W: F& F; n; \% n/ `7 ?
while[ i < people]
+ j' Z! \! `7 ~5 O6 w  B: V5 s[; S1 R5 L  z7 u6 j- s
if( length (item i, d/ \6 u' E! t/ b
[trade-record-all] of customer) > 3 )
1 i! }0 c. M2 f9 M) Y! y+ b5 W7 S( s
[- E) W- F& k5 ?+ I  b! v9 i# ?, i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); g  M3 Q& f: G, y7 q
]
$ b$ ?. [, ?# G* d: y2 t]8 K$ @. X  S7 {9 }7 p
let j 0& w+ E$ b1 M6 e) u2 {4 C. c
let note 0
/ r& N: T4 n9 E5 Q$ Z" Qwhile[ j < people]
3 ^& t% c- e0 _3 l0 Q[( j7 \8 U9 }( k8 u1 Y% V% e
if( length (item i
8 @2 W; F( k3 G# f[trade-record-all] of customer) > 3 )
, O) S& [" [8 ~
[
6 k' b0 K, `0 a% k1 Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# F+ ]3 V" T1 n6 @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ @& f, K- C* n  ]( }, {- B. T; |
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 m+ J9 ?3 W% u1 ~) j: U
]
- d' q5 x. Y& }3 p+ z  W* O]3 t8 x$ T8 b  v! k$ I. h9 r
set global-proportion note  O/ E8 W# B5 Y; F! q
]$ h8 }  \' g) q  L
end6 }9 n7 `, r* h1 ?. C7 s0 V6 @& N

2 m) X5 a# z  K; x; f* n" nto do-trade2 f; ^2 _% E" y. s% H4 w4 p* U
;;
这个过程实际上是给双方作出评价的过程
+ ^% b* n" p% D/ `; p6 [6 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 h3 _2 L! a+ ?" _7 h) q. C5 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ j) {) R1 Z5 J! W& m; G4 w0 @
set trade-record-current lput(timer) trade-record-current
+ P% A8 e, B* `& D; H# r8 d;;
评价时间2 E4 w0 u* s! g& H
ask myself [1 A+ V( k" [1 R2 W5 z
update-local-reputation  |5 O+ C- q* F2 @4 L; c. o" R
set trade-record-current lput([local-reputation] of myself) trade-record-current
" ^5 d3 b9 A5 ~4 a, O]
1 a0 m5 }6 Z" [; Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" K0 A/ _; H' D" ~;;
将此次交易的记录加入到trade-record-one" S; u& F6 {4 M1 ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ U( j4 j$ ?1 T$ p) O$ h
let note (item 2 trade-record-current )
  n4 G$ i) a  M! h) F0 `set trade-record-current
% J7 r! B/ C/ D# |. O# Y  X+ l(replace-item 2 trade-record-current (item 3 trade-record-current))

- o- J; v0 S7 l. [  g5 vset trade-record-current3 |  d( s$ L' U; z7 H
(replace-item 3 trade-record-current note)
2 e4 x8 W) k* Q3 Q5 C
% L% O1 m8 u: H
8 I# O! \+ T' S+ _: ]: c
ask customer [
* Z& N+ ^  _0 f8 Zupdate-local-reputation* o/ f* R5 K- E, `# a
set trade-record-current
' n( M3 E: [. r6 s* i6 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ R+ p! V  D4 Z2 |1 b
]
8 d- \. t/ ~: }" k% R9 ~' H7 u# Z6 b8 h' C
- ~+ Q% L" Z7 S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ j6 E5 ^) N- @3 l9 Q2 ^  }% \, n
4 l5 |1 l; b! S; |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 X! _6 }9 l4 O: U: F;;
将此次交易的记录加入到customertrade-record-all
9 C' B1 o1 d' R/ O; q4 E" V& uend
8 ?) P0 p* }% H) v) w/ Z4 e( b
- I3 I4 }# i! hto update-local-reputation: {$ f) K2 ?1 t. {
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 x) X' H& Y5 }6 C1 q3 O
" p8 l! b; W4 K" o5 W8 q- }5 w! {+ O5 [# T' b" m
;;if [trade-record-one-len] of myself > 3

  U% X+ u* v6 R6 B! `  Eupdate-neighbor-total1 X# _( V7 W' R  Z2 ~1 Q
;;
更新邻居节点的数目,在此进行5 N1 b3 V' b( `( U6 S! n
let i 3
1 ~' |, e2 e4 H0 l3 j# [let sum-time 0- U7 R3 `/ T. q. Y' g
while[i < [trade-record-one-len] of myself]
0 E+ Z& h  N6 s: b% Z[8 }: N6 \: P; c8 S1 ~. }9 X; D# N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 G) V  ?4 K2 `; N; s' ^set i2 q( _5 J2 P4 i) I* r% N1 G8 L
( i + 1)

. m0 ?4 p. C) N4 p5 |]" l5 k4 }6 B+ y/ y
let j 3
5 g1 n1 o! A+ F$ Slet sum-money 0
( ~6 l: s) d0 T0 ?5 j! q. xwhile[j < [trade-record-one-len] of myself]
7 ]  Y  E9 _$ u- K, R[; J4 K2 O, H* b- Z+ K8 a
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)) C2 t, K$ p6 P' L
set j
  k3 g! y: J( {1 J; `9 _7 ~( j + 1)
: }: G! S4 j% |4 P& m: n+ c
]  P2 B& ^; O8 m! ~$ q1 M
let k 3
& r+ ~) }8 K- t' m7 Olet power 0
1 K. f( V( e7 e  {4 \1 ?let local 0" u# i6 h8 f. N6 s4 w) L
while [k <[trade-record-one-len] of myself]. ?7 Q, `( i/ U. S. p- |6 R7 k$ u
[
. \4 f7 ~3 d4 j' x! K7 P# b/ _# Vset 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)
. T' n- E6 ^% x& d1 X8 aset k (k + 1)
! y8 G# r5 a. N/ V]# h$ w4 r: ~* s3 r0 V3 q: [
set [local-reputation] of myself (local)- R# L, h. L) }" P
end7 d  R" O1 Q5 g& {

+ l) ~0 I1 D5 P1 U# C0 x& d, j4 |to update-neighbor-total4 M$ K$ b; x3 p9 V
$ g/ b% K8 @3 {5 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* e* K" z/ n7 c

2 e! h9 E" C+ l( p
$ L! Q' ~  ^2 J! W5 l' r
end! r9 U& M3 e# }5 }7 w- ^3 |" E2 m
2 q! O1 L5 y* A
to update-credibility-ijl
! I  G# a8 H* c" _( N8 Z* h0 n" |) k% c9 U, u$ h+ }6 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。! l) w. q) O7 Z  S
let l 0
3 U# N5 i& @) v$ Mwhile[ l < people ]
" q5 @: B) d9 o% d( a6 j6 y7 M;;
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
/ a. ^7 e- v& u# B; D0 [) t0 O[, p; I) o2 Z6 T# D2 Q. {. K. j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 Z5 H6 ?: ~2 Y
if (trade-record-one-j-l-len > 3)
5 F' V& K; Q( u$ {0 |% f+ F[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% V- a. x7 k# f  C, c' \, \4 Z6 J
let i 3
' ~+ L$ f* P/ F  {let sum-time 0* P# b; o/ F1 c
while[i < trade-record-one-len]' L4 c3 ^/ W  a$ l9 B. R, V6 |
[* h2 V8 n6 {7 `- N1 x% {% g4 t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 M' Z. `8 D) @' S1 Bset i7 M1 x/ g+ P/ D/ m: ?; G; H
( i + 1)
: a) ^: S  ^$ ~- G
]; v: C4 o2 M. L% d( B
let credibility-i-j-l 0
3 @0 S) L" {0 q. q+ D' {5 i;;i
评价(jjl的评价)* C) h; Z( S# ~8 y; y; b3 m
let j 30 w) j. @/ P$ V0 P+ G2 `
let k 4
" g; `5 S. k2 M4 S  V, [while[j < trade-record-one-len]
7 c& W8 [: @  D; h& Y6 H: Y[
5 T8 j* q4 x- C3 @/ ]$ _. J# N* B- xwhile [((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
  ^* k5 n) ]2 \6 G$ s- Z* vset 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)/ F% d2 }+ E4 Z, w
set j8 w! ]! k+ M7 z; p6 F  @! w
( j + 1)
9 i; Y9 R7 E0 i, n' p
], @. }4 u( H$ N
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 ))
" w; c: B3 ]8 u" _
' h9 |' ^+ H) Z% b' E7 Z! f# A. c

8 t& N+ T, O, ?+ }5 ^6 Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& n" I6 }% e- n
;;
及时更新il的评价质量的评价2 c) q  `+ t9 N. u
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ ]% S0 `- G% v
set l (l + 1)
/ \4 V3 Q' t0 j2 R2 W) e' K]1 O5 }1 l4 k0 A. Q% o# D
end  X/ ^- x: D: x1 [3 p
0 n% Q2 @, ]2 ^+ F: c
to update-credibility-list$ D/ G$ D6 F5 M; `% _3 f+ C; m6 F  F
let i 0
4 W$ I8 r  I; O9 @1 ]7 Ywhile[i < people]4 ]1 t5 z+ l' r9 \1 `
[
/ u& _+ c) ]8 j8 T9 _let j 0
  J  @4 J, G& @; [$ ?: I* Ulet note 0* J+ ~0 Q' x/ p1 a2 S. X1 K; U
let k 0
0 k. J9 h1 |$ x+ h  n;;
计作出过评价的邻居节点的数目
1 ?! ?& B% B" N7 W% L+ o! S1 O' Vwhile[j < people]& x6 @7 Y) X( T: e' [
[( Q# L1 V/ d$ `7 ]$ C" U' B: ~
if (item j( [credibility] of turtle (i + 1)) != -1)
6 O+ n' i5 t* `# p;;
判断是否给本turtle的评价质量做出过评价的节点1 B( K2 `: E' D9 ?/ q# q
[set note (note + item j ([credibility]of turtle (i + 1)))0 ~& f* o- K2 `9 c+ e$ e7 H
;;*(exp (-(people - 2)))/(people - 2))]

" P4 z' h. @8 g5 N! e5 Pset k (k + 1)1 `5 r, e: g1 j# j, r( c
]0 u7 D2 h5 u" e. g7 V6 @
set j (j + 1)7 w+ [7 d9 `& F) R
]3 x/ ]7 q, S+ S9 Y; ~
set note (note *(exp (- (1 / k)))/ k)$ b2 s" f/ U" b9 m9 n
set credibility-list (replace-item i credibility-list note)
5 m: F8 d! H! K# v+ W6 Nset i (i + 1)4 Z: i1 R! K0 p! u# W
]
( \2 k, j* f9 c) K9 x, h5 f) {end
) m" r+ S( q& t8 W: a0 ]& \7 K' v: O- {" n! H/ i: g
to update-global-reputation-list
( s) l! }6 j0 l# P% t" |let j 0
+ K1 m7 n8 B7 r( P6 hwhile[j < people]4 ^( v2 J8 v) A% @
[) V. y# `% i6 U! _$ t
let new 05 t5 A4 K- W. f
;;
暂存新的一个全局声誉3 Z6 e; @0 Z$ [7 ?1 i4 k$ M/ h
let i 0
% C- }* f3 k1 V7 Q+ w3 \let sum-money 09 C+ E2 N% I' a0 R3 ]  m
let credibility-money 0
1 p$ k, ^  C/ f9 \8 r. H3 gwhile [i < people]
/ _) P* c2 X$ f8 W[7 X) d  t0 f* W! q  D/ f  U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ Z5 ^" {8 }& m. x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& Q9 h0 D& X0 c% ~5 N
set i (i + 1)
- e8 L9 I9 x" L+ s, ]]
) x( E& c/ F8 jlet k 05 S" Z# W2 d: f1 O$ K) @
let new1 0
' l. }5 v4 H" ^0 j0 `8 y  xwhile [k < people]
! p/ q& Y/ E1 \, n# {5 w" S[
3 |9 R6 L% L+ \1 R: U: ~* m' Z  Eset 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)
! i" L: R# t2 b6 C- O# Jset k (k + 1)5 O. b% Y" P9 r1 q; d6 E: B
]
' _2 S' w* c8 T5 R8 E2 {% R! J* tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " S0 n' p0 p" H& }0 Q, t. w8 E0 {
set global-reputation-list (replace-item j global-reputation-list new)! _: D( \- }8 M8 `0 q, x
set j (j + 1)
$ k6 _3 Z! h2 X3 j3 y]
7 E" X# c9 z$ ?# Q4 A  k& U$ X  \end5 d5 d: Z1 u, |; A

; m  S  W: M% A. B) f1 K$ k5 u7 s+ D6 y5 L6 E, |
0 u) |( d: [: i, [7 N" [
to get-color  j: G, Y3 x6 g% `5 p9 K/ T
# D" q7 A  H2 B& U
set color blue

: N+ y/ Q6 s# o! O& `/ D: `2 send
! V- S& F! _# L! B# Q& o: U- u
+ s- m: ]- L! A+ r$ N+ ]' p/ ?to poll-class
7 u2 r8 b3 M% vend! ^& P6 j5 t$ }

# R1 X3 c3 I0 |2 E' @1 Ato setup-plot12 }) q5 d0 X8 `) O0 e8 w" L
  |* w/ P6 \8 b9 ]* Q8 ?
set-current-plot "Trends-of-Local-reputation"
! }8 k) ^8 e7 s% i9 q  u

% }  b' s3 F, V2 p* J' Pset-plot-x-range 0 xmax

/ ]% v) J2 o7 D: Q# d
. v; n5 V$ z& R, h! Z3 k2 Oset-plot-y-range 0.0 ymax
' B/ U& D( y6 v- A& T4 _6 e
end
2 Y: ]2 p% U2 T# O) A) [# j8 j/ s3 K: Q7 L) u
to setup-plot2  r8 H6 v; {- I. m& P

" |9 S+ g; j8 U; Vset-current-plot "Trends-of-global-reputation"
! @* s/ \( \: V4 ?3 G, ^# i! G8 k
# i7 A5 A, p) a. p7 G- U4 u& d: u
set-plot-x-range 0 xmax
  k* }9 l; C, _  H; `4 x
8 I$ W9 e  ?" z
set-plot-y-range 0.0 ymax

# |1 H+ w5 g, M6 bend7 j$ ~2 f/ o+ b
% w: u- h* G) u0 @9 n7 D9 t. J
to setup-plot3
2 o- R7 v/ |5 o$ X( x$ F5 ]5 f5 Z2 l. j0 v0 {, ^7 P! E' n& L
set-current-plot "Trends-of-credibility"
  e* ?7 p/ ^4 h, P8 T6 `& F
/ \' K: V0 \- C! f$ i6 X
set-plot-x-range 0 xmax
9 ]# w) d, v5 j9 V; z6 S! C

8 ]/ m% J; C; n/ w( |/ bset-plot-y-range 0.0 ymax

8 c3 Y3 \- K$ P  C) M$ {end
* K$ c2 W: j1 S( u. V
& r& g2 e% P$ j2 t: t7 T9 fto do-plots* S) Y& w# C2 E% _/ V2 \* w
set-current-plot "Trends-of-Local-reputation"
6 V" w" d$ I4 h: d8 e& lset-current-plot-pen "Honest service"
! y, S( ^' F6 |1 y) z- ^, gend3 p$ r8 U9 C. ~8 u4 u4 \

8 u; f$ a4 W' S5 I; B[ 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.
% h6 u( I- w+ k8 f! Q0 r3 K2 P( }; Y5 d3 d5 G' e1 {0 M
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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