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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:
; c9 O* u: B/ p1 \to do-business - @6 {1 K8 v1 j* }2 }
rt random 360
9 K7 p2 \! h9 j1 c fd 14 E/ F% E  {6 u: k  M4 n' |
ifelse(other turtles-here != nobody)[. i# Z) |2 n( H
   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.- T0 S( x# O: N. ?3 @/ R3 M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ M% b- _; k3 b: a* {. M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 Y4 d* [+ [8 R, ^1 q  B
   set [trade-record-one-len] of self length [trade-record-one] of self
4 d1 }4 @3 [* R' B& A- R( i( ?   set trade-record-current( list (timer) (random money-upper-limit))2 ?* i& Z0 M8 ?& Z' c7 \4 {" I& M
1 B2 l. Z" @5 y, ?
问题的提示如下:# r$ Z1 W9 {( m) r7 O' ~$ x

: C: E, a9 P; ]# Y" P7 Z2 ^error while turtle 50 running OF in procedure DO-BUSINESS+ ^  o1 `0 k% X: g8 H! \2 u7 b
  called by procedure GO
9 d, {) `, ]7 |, s6 b: X+ DOF expected input to be a turtle agentset or turtle but got NOBODY instead., K: ]1 ~9 m% i4 K
(halted running of go)
/ ?1 \* e. v5 ^1 v& N1 P! `' z! t8 S
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~~* t/ D* z9 F4 \  G8 b6 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
6 H1 {7 u* |, L, \; H* iglobals[& x/ D" [& ?, X
xmax* T0 z- K; r$ w4 s% V3 V
ymax4 D  N: K7 T$ k- G3 A: j
global-reputation-list
9 W5 O+ E8 [) F5 p* o
4 r& C  i4 {# o1 g8 h( C2 a% X- A; d;;
每一个turtle的全局声誉都存在此LIST
4 h0 n+ Z3 z  P& scredibility-list+ O2 U" {# {- I# @
;;
每一个turtle的评价可信度- k  S9 v1 D6 W& `6 Q
honest-service
# s1 R, a1 ]0 i6 E) @, z6 J# junhonest-service
/ D3 D& l: M& Z' b  ]& Z% D/ O5 ioscillation
" v4 e, e1 P- y; |& c7 erand-dynamic1 c' g3 A' }$ x: x2 i
]; D3 U- p! W5 v/ p, d6 _
9 M3 ?, _. j" ?% M/ r$ `" c8 r
turtles-own[
+ C- f, n( U) }8 Ztrade-record-all, ?5 R" G) ]5 p* o0 A; v
;;a list of lists,
trade-record-one组成
2 }8 g$ E( z6 G: m7 c9 \# b; utrade-record-one
* [) a2 n* m+ ^* A- B. T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) e( F. N0 x* n( e: o, m6 b0 q+ g
; S" l# A( x$ U6 B' v8 l
;;[
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]]3 q! K0 S+ t# |5 j( w
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]& a* k% N, I' f- E
credibility-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
6 J1 d2 S2 Z$ L4 L1 D/ N) H  Yneighbor-total' x6 _7 G  O9 Z& D9 n
;;
记录该turtle的邻居节点的数目
8 t; o1 p' _* h3 q  T4 Otrade-time
$ U1 t( P7 _/ b; \6 _;;
当前发生交易的turtle的交易时间7 D- r/ k9 `$ I% D! s) s
appraise-give: S' f/ |( B2 R4 Y' q% i6 [; n7 `$ }
;;
当前发生交易时给出的评价
/ `* s9 v# z/ n4 K7 eappraise-receive
9 N7 M& L# U: r* ]6 A) U' w;;
当前发生交易时收到的评价2 \; q* M. s, D  H% X
appraise-time
' k$ |7 \1 P8 S1 o: t;;
当前发生交易时的评价时间0 E2 U% U7 p$ e8 g) F+ i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 z3 ]2 Y# E0 o2 m2 B
trade-times-total  R7 C9 G; \% f
;;
与当前turtle的交易总次数. g4 A8 j4 G& X5 V3 f5 h" L' a
trade-money-total
9 h6 s1 o; P3 q: O! x6 F' t;;
与当前turtle的交易总金额
7 X% |0 x. z# e: T+ m1 k$ tlocal-reputation
  a; E' ^: b4 ~- N1 i" o. e; h7 Iglobal-reputation/ C4 i4 [) P! [4 Z' Q$ \
credibility
  A$ B* s- U9 A. \" \9 E;;
评价可信度,每次交易后都需要更新: ?/ I7 q$ ^5 m6 e5 @1 _
credibility-all
6 z0 ^8 o( ?# F- f# H;;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" ?! i! l7 J+ U
+ n4 f7 `( P7 [
;;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  ]: Z8 e; _9 L& W- l
credibility-one
( W4 G; J2 L4 \" \/ A0 j;;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
$ w  V# k1 a) a# q/ n& ~: }# ~global-proportion
' z& |$ C" P& t& I' h! n" Jcustomer; f1 ], |& d# {. V& Y
customer-no
* u6 E/ y# I  B: Q# h% L, t( g* K+ jtrust-ok
( B5 x. Z) z. C$ Ctrade-record-one-len;;trade-record-one的长度0 {  m( J4 [& N0 o2 ?+ b: }
]5 ]: Z$ K3 }9 f7 |& [( l* Z1 E

) }; N. ^- q$ j9 J6 _% \: s; v* \;;setup procedure
6 u6 e0 I  B) U3 B9 j: [$ _, M+ E$ s$ ?% p2 G
to setup" d; f8 o0 [& y* k6 i
0 m0 {: v) Y6 z
ca

& l2 f/ j$ Q# d- `6 V3 J3 r% }* `. s( @" u
initialize-settings

$ ^" w4 O2 Z' K; s: n4 ]. O/ ?" K: y, ~4 E, V* k4 m3 y5 C
crt people [setup-turtles]

( }5 B3 J" F7 J$ K& K- \
0 W7 h! C' Q. p( X! \reset-timer
. X6 H7 ?) }& s$ ]% G# L' q

% C. H% n+ x8 \poll-class

$ p5 G. d# D7 ?6 n1 L/ v: X, a% k/ j5 F8 H6 ~
setup-plots
2 o9 }1 T  |! H4 }2 F4 @( O3 @

* X2 ^/ y# T4 Z* m& P8 E0 pdo-plots
+ `' ?0 W. L$ ^* E9 [  \- V) m
end
/ g7 U3 R5 l8 U, Y) G! D* M  p$ z" v* Y$ h$ I
to initialize-settings( a$ k' @8 k4 l$ ]
1 g! w& Y/ C9 Z- Q# A$ v
set global-reputation-list []

2 w5 a% @4 n) U! a
' z, @% i! y4 E# @; z( }set credibility-list n-values people [0.5]
& O& G% f+ A2 E* k% L( [: N5 q
$ h4 H8 I1 T. x" i
set honest-service 0
% Z) n( D/ @$ \+ J! z$ K+ ?9 s

6 k. T0 B9 y; j# x/ h& bset unhonest-service 0

* K7 R9 q# ?1 T2 ~/ l( H. i1 W9 l4 J. _- c& a* p0 u
set oscillation 0
$ R& A/ I: P9 ^5 C# t) q! L- [3 _" `

$ [# U* P$ Q0 H# Mset rand-dynamic 0
4 A) x: M9 K3 J* v. l5 s) W1 P) T' d
end
& C5 ?% a! M  U0 K9 N, s. H) U! Z3 M/ G1 B0 s9 X; C5 t; d
to setup-turtles % s8 P* \2 F+ z/ l8 s
set shape "person"% E" y6 N8 j8 m& v
setxy random-xcor random-ycor5 y3 E* e6 I/ C  O& T3 y  l
set trade-record-one []
8 O9 F, r; W( W8 e! u

; Z3 B; [7 w$ l3 ?/ M: ~- ~  f; Tset trade-record-all n-values people [(list (? + 1) 0 0)]
: c- A) q. E/ ^6 @5 i+ F
3 V4 d4 I" X: p# F; |- b' q  h
set trade-record-current []" g" E* x- E6 |) s8 Q+ R
set credibility-receive []
; v) k! R, q: R, `; {" Eset local-reputation 0.5' l8 u, p( ^$ R. k0 G
set neighbor-total 0
. j7 a$ q3 B" g" p4 }4 I1 j7 Gset trade-times-total 0
. x& l. p2 K; N- aset trade-money-total 0
  l& ?8 c1 k" Q' \: c! nset customer nobody3 F" h0 x4 S( f4 B6 y; C
set credibility-all n-values people [creat-credibility]2 ]! j, E. q* m+ c1 K! r
set credibility n-values people [-1]
# W+ R$ A1 ?& Pget-color: o+ c( F% n, g# v& ]& A' H

- K0 k; U8 t3 \. fend# {+ E! f2 G" r' D/ T

% [. }1 d+ ], J, o" B3 I/ ito-report creat-credibility! s6 h/ D. n* W* }& }- R3 ~0 B3 X
report n-values people [0.5]/ P0 C) h) u0 j, a0 _( I
end
9 P" J0 S7 g0 @. J0 r* Q. N. n. F* ~
to setup-plots
2 W2 U- w. b% U% S' O6 t8 b$ ~
9 u9 p4 z6 ~2 S* uset xmax 30

1 q; h# G+ {4 J! U! F0 @, k2 |5 w+ y9 \9 a- m# r: D" R
set ymax 1.0

  V2 F. u" ^) t+ l/ K& |, d/ E- e, ~- [! R: T4 d' Z7 Q# ]
clear-all-plots

; i1 I! h  d- x" j& P1 g) T3 Z* ^; u+ W& T8 Z
setup-plot1
+ E1 z5 g* @+ b$ x, F

: o/ G+ ]8 y4 \; `& [setup-plot2

' q, i) c2 k* X8 S9 H8 C
7 f* m, q2 ~& L' m9 M4 Gsetup-plot3
8 ~3 R9 |6 n3 w& B# _1 L# l7 m
end1 N3 B( V) p$ z* G
# F3 b# Q) u- H9 K( K
;;run time procedures- @- ^' a) n& s% ~( L) N% m

! S+ g5 L2 H* Z! t0 R, Y& gto go5 D. X* h  i, y8 l! O. t( f) d. z
5 o, O  M/ R# ]9 L8 y3 K
ask turtles [do-business]
: N3 }# w& `1 ]: h
end- h; J( o1 L+ G% Z. M; N9 w

! B3 y* }- J5 f; r+ Q( lto do-business : ?# {4 [5 R; d, g. C

6 \, _5 @+ L8 p9 [6 C- [6 d
( ^5 `/ M* a1 Xrt random 360
- g; K, U6 ^' l7 S  T9 @

; T; P. y4 E; D! i" xfd 1
- }& {3 g7 w/ A9 ?: e3 ~

* J( |! k1 D) @  C/ Uifelse(other turtles-here != nobody)[
, l8 o, e3 i( S7 V

+ m; H% T" C: C. Gset customer one-of other turtles-here
' O4 V, Y- e+ e( A0 d- O. o

2 z5 R' s* x* n2 D;; set [customer] of customer myself
5 y" W  `" \! E* b6 X
& J) w( O% ^$ n0 I# [
set [trade-record-one] of self item (([who] of customer) - 1)
0 _, Z' l0 P7 |1 Q- Q, Z$ N% P[trade-record-all]of self
  _1 C: ?9 `5 I* i8 |7 d2 O. r9 U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& N6 R" K9 @  O$ h. \1 E! E* m( b# h# t2 X1 T8 t( V7 g: z% P
set [trade-record-one] of customer item (([who] of self) - 1)
  D, k! i) Y) J# \* a" q* ?6 a[trade-record-all]of customer
: Q) w  `- p6 u
  Q: w( B, h: O& n# S, [
set [trade-record-one-len] of self length [trade-record-one] of self

  p# U& R! S+ t* Q6 Y$ s. M& k' V
& w# I, T. s9 |# Nset trade-record-current( list (timer) (random money-upper-limit))

3 R& n" ?: C# z% X4 w2 [& v
! s( p% `9 x1 Q# p' D% kask self [do-trust]3 z4 G% S3 ]' b! H- E- Z
;;
先求ij的信任度$ n* a% ^! Z$ i  Y; j, {: O

' s  R) ~( \4 y& Aif ([trust-ok] of self)
9 C' d/ X+ J2 H. K;;
根据ij的信任度来决定是否与j进行交易[; s5 i- l1 i, j6 e2 J0 O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; X8 t) `" `6 P0 g: ^2 ^5 l% j
3 D$ R! K6 C4 p- N  G. N
[

# z: a+ n0 T8 \2 M: l/ d- y0 ]0 Y- C' Y, Z' j; S
do-trade
# V7 g# I  y3 E: R0 Q8 j
; M+ Q5 r1 J' P/ W7 n. r/ d8 J
update-credibility-ijl
) Y  e9 h* W3 }5 J2 k- H7 V) @4 P
+ ^0 ~) o. i; V- \% ]1 L
update-credibility-list
  [2 P" \3 A& {, N6 `
+ j, Y) d" F5 c# S. l2 `
" l1 L" |. y0 t9 ?
update-global-reputation-list

, Z  F7 b5 j, R& h3 J8 m% C; C2 `- w$ p( c
poll-class

9 G4 M, |3 r$ n7 r5 l2 O/ Q5 I
) g$ O% i5 U  ^: qget-color
1 G8 G2 h9 e8 \5 a
) B' N( c7 a; W; S) X
]]0 S( y  m) B4 H) j3 k6 I! X: w

5 a3 |* Q; h5 A7 _1 f;;
如果所得的信任度满足条件,则进行交易9 d/ B7 J- D* k3 W7 Q, l: f2 B

0 `4 Y4 ?- Z) B* X3 F! f[

; m) {# x' V& D; J. g, [" i/ v) N2 l" ?( {2 A
rt random 360

: w) ]0 G/ f% r/ d; W& p9 l  N% A
fd 1
; M; A2 Z5 j9 u9 E3 D& Z$ l
. A% q. Z: b. T/ l, H) M! x# _/ D
]
# e: x/ b2 O. Y  E4 j1 l
4 Q' \: s0 c" a- v- m
end

- x0 b4 B# p. M- ], h( }
0 q; m2 ^9 O% [6 ~- {6 X* _to do-trust
7 H% J, s* o$ T+ u8 A8 Q/ qset trust-ok False- p9 o( o; V6 }7 M

3 }" T6 m- z/ J* y  _9 n' U
/ J8 V1 q5 g% C" c8 d
let max-trade-times 0
  }+ i+ a2 B, ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# P! i( X7 l# ~+ a  C/ e
let max-trade-money 0$ U8 o# W& }* i& g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 F. [! _/ q3 J' u8 a) z+ Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) p3 b2 i8 n. M1 H" `! X
; n3 n  F1 Q9 k$ i+ D
& C. Z% n3 L1 G
get-global-proportion5 ~+ U" X6 L2 V9 Z4 c* n
let trust-value
3 n. g$ d' q$ r1 ?. p. Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- N8 Q. t  z5 D+ G
if(trust-value > trade-trust-value); H8 N6 x5 T: Z
[set trust-ok true]9 u) w- X1 z, {; n6 e3 b3 b2 ?; }
end- S% q2 D9 T$ \4 N
* R, W  U; P4 k$ K( `) y
to get-global-proportion7 w4 W7 z1 d! ?4 Z( J3 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 W. N6 D9 m/ `8 s
[set global-proportion 0]
# q% J4 Z# C3 C4 K# J" n2 z2 J[let i 05 S# w1 }* b7 [* T4 v
let sum-money 0% [  B4 U3 _2 c1 k3 V
while[ i < people]3 I8 v( P2 ]4 x- E
[
( J- T3 v! J9 M- c0 v, mif( length (item i
6 P' [, ], g% u+ i6 l# M[trade-record-all] of customer) > 3 )
, O9 o7 f3 `; E. [% p
[& Y6 e7 a! r1 f! b7 p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 u1 ]- I9 L" G8 s1 b: `]
. O+ I5 n6 I  C7 a* U8 x+ |/ K]! ^: W- i& C% J
let j 0% R. U, K( C$ T- y1 m9 z
let note 0
: e/ N% F! Y( A# ^' z7 Owhile[ j < people]
5 f. a  }& h- I! S$ z+ S[
/ A/ E5 s! B; w0 P' J6 m; dif( length (item i. l  i" X; Q4 x5 g- o! u, v
[trade-record-all] of customer) > 3 )
& Y' U: o9 m' f, T8 a0 M7 M1 [
[7 F; d3 b8 @( ^4 U4 H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& {# Q* g$ D( ?4 z, H3 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  h) D6 A# Q* d" J4 ]2 q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], Z; v, Y  s4 R/ _
]
" l" O6 L6 t1 s' \+ n! x: i]
, n3 ^* X% H9 n* d1 Gset global-proportion note
- T5 I7 P0 ]9 y- n: ?]* i7 k9 V: Z) |  x
end# s$ g$ f& H! I" \# P2 N. \; K( M

+ ]% k0 A( r/ @: J" ]9 e- f/ f5 Zto do-trade: d2 F8 t' p4 w6 `$ ~1 f
;;
这个过程实际上是给双方作出评价的过程0 W+ C" |  u, p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; O  u. u9 b4 g7 y% g$ R+ E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, \1 d: D* n: c( m$ Vset trade-record-current lput(timer) trade-record-current' f5 H' K4 O; X6 x; a$ C$ e
;;
评价时间
7 K9 n+ l0 q8 _3 zask myself [5 f6 ]) Y$ I, M: B' V4 W4 Y. d1 `
update-local-reputation  i% T( l/ r0 c" u0 o
set trade-record-current lput([local-reputation] of myself) trade-record-current% u1 W8 |# V/ l. ]
]+ E8 L4 x/ M# s8 j* R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# {8 R5 a; ~8 _6 P5 g;;
将此次交易的记录加入到trade-record-one
8 H" C" t" U6 |( fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ?# J7 e+ y1 S% B8 c/ h
let note (item 2 trade-record-current ): F0 Q& p7 K6 b# S  q5 z4 a
set trade-record-current) F. ~6 |+ ~% {+ w. ~- d4 s- E; O2 _
(replace-item 2 trade-record-current (item 3 trade-record-current))

, s/ q2 f. m; r4 e$ J  Cset trade-record-current
( u% @5 d$ m1 v1 W  F" _(replace-item 3 trade-record-current note)
* g( L8 O6 J0 T$ o7 B* b  e1 L: P$ G- p+ |8 r) |
' h' v% W; m" l6 g, @6 n# p0 p8 n
ask customer [
* z0 U2 c4 e* H. Wupdate-local-reputation
+ n  ^( e, K3 C1 A4 O" Y) Q  aset trade-record-current9 R; S: u3 t2 {3 |1 F' z. M/ J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 n. Q( {& E6 u8 o  m]
8 E/ A" H- X+ a* N. q- _# Z$ U  U1 [* ~' z
6 j1 U# ?7 g) j- s. L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& a! W; r2 ?3 W* K3 J+ h
  g& P6 a) N: O3 y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 d- t' b- C# T5 b; S4 a7 O, ^! D;;
将此次交易的记录加入到customertrade-record-all
/ b+ T- ~6 z6 f! t% qend
" }- s# a: e5 u6 ^6 E
  I7 y0 O/ o5 V6 {1 |% {to update-local-reputation
( k2 P! v$ L8 O5 [! l3 E9 Vset [trade-record-one-len] of myself length [trade-record-one] of myself. A/ j' N  m, X, ]! S  f

, l! {4 L! J' r- J  V7 Y1 o4 J( _" y" g
;;if [trade-record-one-len] of myself > 3
2 n  y0 q/ A/ _9 T! i
update-neighbor-total# f9 D, q% |) d' K9 c: |8 K7 C
;;
更新邻居节点的数目,在此进行7 j0 s, \$ F* _7 R0 `7 R
let i 3, P5 q" Z$ P  n4 q; F0 w, ^0 Z
let sum-time 0" d' M, c3 {- u7 ]1 d
while[i < [trade-record-one-len] of myself]6 F4 N$ b6 e, h( H. B1 ?. Z
[
( z: V. G/ n2 a: H7 [5 Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ s9 c& F: K+ a! \1 [4 |
set i; G( u/ k+ j" J. _4 y# v$ L9 A
( i + 1)

7 D* s! N: o& Y% T; c! _]" m# s# v  F" J: Z% J1 g  m6 p
let j 3! K. j: C2 W4 M5 @& f  E
let sum-money 0
) e' Y8 j/ Z1 v" e8 pwhile[j < [trade-record-one-len] of myself]
' E8 {3 b0 F+ f, p' W[5 [; |  |* ?) f: T- @2 o$ z2 |% b# O
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)1 Y7 u0 U, U& A1 z
set j
# I' ]  ?& p8 l0 b7 L( j + 1)
+ R4 f( n# g' i9 M: y' J4 Z! D; G8 E' m
]
& D5 B7 }# X$ D# f  flet k 3
/ F% d+ g1 ?7 F4 G) T. Alet power 0
. s& }! D: i. Z5 E4 Z2 hlet local 0
& Y- A9 U$ P; m3 z# Z# T+ Pwhile [k <[trade-record-one-len] of myself]
5 N, |2 h% E1 p0 y[* p: f( R, G4 \. [1 ^/ o: P$ 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)
! Y8 O6 Y1 E; w, wset k (k + 1)
2 H  z$ B; R' E% r  H]$ u* L$ R  {% W0 J- f* S
set [local-reputation] of myself (local)3 D0 T) d6 m! p8 _  [: B
end) c# j* ~* n" i% V: Y1 W
; H" P# T) z: c! p
to update-neighbor-total6 V4 m( K1 V4 `$ a9 U9 P

. c! V5 l6 N8 Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. X# B8 C7 k6 Z4 H
! R& t9 W5 g, [8 |* O/ h: b
( W  s9 |# @" [$ Q& t& N" q
end+ P8 c  ^+ `! k2 Q

7 H6 J+ k$ r5 \: a' `! _" yto update-credibility-ijl ! U5 U4 b) ?. U& y

' o4 f$ w" Q' g4 {' m;;
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。
. M! g1 G, a3 Y/ a# a9 `6 s0 tlet l 0, _5 H# T5 X5 P6 H
while[ l < people ]6 d* F! T+ D8 m6 W; n
;;
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
- P& x' W5 J, D9 q1 j$ a4 g2 k& I[2 f% F+ D8 v$ v* m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 F( g* w1 f" N' k# s( ~5 k
if (trade-record-one-j-l-len > 3)
% Q4 M- k8 l# k) l; H; X$ g[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-one4 X9 ~/ _6 M+ G: P$ q
let i 3
4 ~+ B7 h3 h* b! mlet sum-time 08 P# j8 G# G0 h$ G  F  u) ?
while[i < trade-record-one-len]0 x* K: Q9 A( _# g
[) u  S0 N1 M$ j5 x6 D6 g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ z4 w7 U5 \' t) y8 ~& M9 y+ ^! p1 A
set i
, e! r# I( k: ]0 V& T1 a" d( i + 1)

- |# R0 ^. B% V. E) r* Z]
  I/ U: |  Q' w6 M5 U3 ^let credibility-i-j-l 0
: Y$ \6 M& _9 ~- @: b5 ]  S;;i
评价(jjl的评价)1 _! Y0 \1 d) `5 f/ A( l" T
let j 3
% N: p/ G2 W) r! W( p3 x0 G& v. \5 Clet k 41 [9 _  k' B! l  W+ l: M) t
while[j < trade-record-one-len]
- L  {" l/ P( H[
8 ~) z+ [/ o7 _5 Rwhile [((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# d8 p+ G# x6 f) ~
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)& E' z4 c4 l3 \5 F
set j/ P" u5 r) p, o5 _0 N
( j + 1)

* p5 B) Q4 O& T]
" c; `! u! J9 Dset [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 ))" l# `3 W9 \5 ?5 a& o

/ C. W) i# y& u3 d3 y1 [8 x- c

5 O. W' m1 M. H3 Q. X, ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 m1 X" ~  i: Q* x
;;
及时更新il的评价质量的评价1 ?+ Q. O. `" Y, x1 H  @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 {# f& N+ G6 Yset l (l + 1)
: q+ [9 C2 W! o: e3 K+ W: d4 H% N]% v: i$ n; I! p2 r
end
4 u# P; f$ f% b# O. M$ z3 R& M5 r$ z# K( I% p7 W& f
to update-credibility-list: R% S! y5 {7 J7 F# p( K
let i 0
  M/ E  `- E7 y: k% pwhile[i < people]
  B/ V; o' ~% l  A[
8 V4 \/ z. s$ ]+ blet j 0, [1 }) `" q" I/ e# w. B7 J
let note 0
, G/ ^8 _# ^5 B3 Z8 j/ `let k 07 L9 A4 M3 K3 t! i/ x
;;
计作出过评价的邻居节点的数目1 U5 Y. j% h% L3 F
while[j < people]
3 A( G( \2 H6 u! _[' @2 \. }# S! Q% D$ m
if (item j( [credibility] of turtle (i + 1)) != -1)
, i3 \+ G6 _* m0 S+ z;;
判断是否给本turtle的评价质量做出过评价的节点! g/ J2 i; P1 x, P5 {2 i9 ^4 f
[set note (note + item j ([credibility]of turtle (i + 1))): A3 o# d0 L) z4 t/ q
;;*(exp (-(people - 2)))/(people - 2))]
: L: J; u& c! M
set k (k + 1)' j$ l) l1 y+ Z2 l8 l6 ]- M
]0 R' R8 y% c( p4 s: }+ K
set j (j + 1)- {7 U2 N0 i8 N/ ^; S
]6 K& n) T1 I5 M! \/ e: c. R
set note (note *(exp (- (1 / k)))/ k)2 c6 H% Q0 M2 L+ `7 `! M& \& Q
set credibility-list (replace-item i credibility-list note)4 k7 s; z& X) n4 o7 [( ^( Y5 C
set i (i + 1)
  s9 ^% F& p+ a5 r  n  e3 {& Z]3 J0 F8 l! ^# e8 y+ c9 C: X
end
; r" y$ t5 Q# a2 d( Z
% G( q3 G) w: fto update-global-reputation-list9 r, n. r* m+ O, D7 K
let j 0
' Z& |" R4 @) b2 i. Xwhile[j < people]$ T; `1 W7 i% {6 g
[# ~& i3 u) R* s9 Y' p
let new 0
7 _8 f2 P. O. |) p* d;;
暂存新的一个全局声誉
8 ~8 X, p0 Y0 q* S! o% Olet i 0
, T7 C- x& z% d! jlet sum-money 0
% z% `9 b7 N( w/ X5 Hlet credibility-money 0
  o6 Y6 ^5 n+ {% rwhile [i < people]
7 w  ^) M5 P6 S) n[
, s5 s5 j, A+ q1 w: {# @, `8 D8 Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* Q' Q$ `0 Q1 O6 m+ qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 `; _/ [; A1 w- N4 i# e2 P/ f
set i (i + 1)
# V4 e7 p0 s1 D( d( S5 z]% K9 f, N7 [- s2 T) [
let k 0
4 C) S/ [) E6 V! Y9 n( R! ulet new1 05 Q( E% r$ x1 u0 B% F
while [k < people]" u/ N/ ^) ]/ c4 _6 R$ g& H9 v, v
[
& _9 l# b2 U0 X3 i. C$ W4 jset 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)
3 h+ S5 X/ `; I1 r( |' {set k (k + 1)" H' ?, |% R; c; A6 Z) {0 C+ l7 A
]
$ ~  \7 h5 Y, g5 t) l$ _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 a) t# ?' {* F% Y1 V( i7 i6 U. [
set global-reputation-list (replace-item j global-reputation-list new)' x) J  ]- L, C  s1 e7 U: }
set j (j + 1)' Y) ], Z) f) @' y
]
5 d; h# B7 g1 L- Fend# l7 l2 R% v' L- H
- Y: w9 }6 ]( {5 s' A- u

1 d8 u9 c8 B9 B7 D1 a7 A! c6 x+ B- {  q$ X
to get-color
; T* P% e: g: p" b' u
5 V: d, n( t9 C: W' kset color blue
) J& W# }0 I5 a: O5 q
end
$ z- r' g4 e' [
& I) L! n! g7 n' i0 uto poll-class
) v- r: ?! y& V% K6 ?% l9 C( Zend
, z  j! r. X( i* I$ D( b! ^
: s: X* g/ H6 A  C; Gto setup-plot1' Q  t' x! e" L

' F$ s* O+ `* l5 t3 H: Bset-current-plot "Trends-of-Local-reputation"

- G! }3 l7 H9 i8 M1 u' b3 Y! ~6 q) S/ J# Y# M2 O9 {
set-plot-x-range 0 xmax

# I9 `7 D5 v9 [3 y4 ]7 \1 `7 x  j5 {% E1 @
set-plot-y-range 0.0 ymax
, D& `3 J; |+ P2 D& p0 x) D0 `
end) c; z4 M& Q4 _% F5 f# S
& u- a) B2 U! C! b& J
to setup-plot27 R: c, @: X7 ]1 E! O4 Y  D

' ~6 N+ G, R& p/ z0 oset-current-plot "Trends-of-global-reputation"

6 M* ]7 q- t; l" c+ D  H
# F9 D/ {, \7 l4 k% X1 N* _/ `set-plot-x-range 0 xmax

/ j4 {3 ^% K9 m7 e8 U
/ ^3 Z6 ^- n- i6 b' {8 zset-plot-y-range 0.0 ymax

  ~) c9 V. U; x9 I  fend; N  ~1 k! H3 `  L  I! a# i) g
5 ^( v3 E/ p" u# ^8 z
to setup-plot31 \+ {9 z* ^! ]6 t3 ]+ k

5 b: ^/ |0 R: d. Hset-current-plot "Trends-of-credibility"

3 d& P9 l. L! h& I! Z: M$ n, ]  ]% c  z
set-plot-x-range 0 xmax

2 e1 [$ n2 b; l7 s
" t' e1 j. M/ |  |9 @/ m; Bset-plot-y-range 0.0 ymax
; f+ F0 u6 g+ C( y
end
8 n: ]- I6 v4 K  w1 V
- q3 n2 A# K) h6 {to do-plots
6 r6 y6 l( b; c: {. p6 zset-current-plot "Trends-of-Local-reputation"3 O9 r5 D% L5 M0 N
set-current-plot-pen "Honest service"
& j9 h4 z1 c4 N9 U" aend
. B* T2 F. {6 y' N
4 @) n. W* a" M- n) n* u# n[ 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., n4 H- z- s* k1 i

! R: z+ f) C1 Y2 u; s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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