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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:/ E! U; F$ M. k, \$ W4 P+ Y
to do-business
3 V& H, ?4 R; x' v rt random 3608 }- r" [; ~* T, J6 e( {
fd 13 z7 q6 Y/ \5 z0 r
ifelse(other turtles-here != nobody)[! E- c$ Y# i2 h4 O; T
   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.
8 E" j) n1 K9 ~7 c6 Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 g! s$ {$ E# `- M/ V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. j" Y, I9 Y$ X6 P
   set [trade-record-one-len] of self length [trade-record-one] of self
+ [4 T5 r  ~9 Q5 x( i) l+ t   set trade-record-current( list (timer) (random money-upper-limit))' b2 Y; q) F1 `# b; A" L
- v3 A/ b" E% n- H* H
问题的提示如下:. h! W' Q, @2 D9 X) m

: y9 f  K) D3 z' eerror while turtle 50 running OF in procedure DO-BUSINESS
3 n+ I% @: ?3 k  `! ^  z- a  called by procedure GO
+ S7 i. N9 G3 WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ k: |5 I) a# M
(halted running of go), \- O. c- D7 d

: r: V9 K6 _: Y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~~
# y( s' a) E: ]2 D# a/ @- ~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, I7 D" o" z6 G. F/ n' Xglobals[
! Y* p0 ^& ^8 `1 M# ixmax/ x& Q0 [1 I3 M2 C
ymax
% h) j! m# t% l. U! Cglobal-reputation-list
) {. w6 s5 v- N: b, G! f6 O' [5 h0 d4 j$ K, v0 X
;;
每一个turtle的全局声誉都存在此LIST
; i+ Z3 X% c0 F2 F8 r; Qcredibility-list) s: U( k. l, ^  d% T. W
;;
每一个turtle的评价可信度& l3 M  W: \, A) N" p1 C- }  ?9 w
honest-service
) l, N5 I' \$ ]7 A/ n7 C! S  g. sunhonest-service( G) O( W. \9 ~2 f3 G
oscillation
( W$ D2 a1 }$ F0 r. ]7 Hrand-dynamic/ q& j* L8 M$ h* `! B; K& y
]
5 D: S' `, T+ N% t) ]( |; ?0 d+ r, w# A3 a
turtles-own[
6 t& b) @7 t0 `/ Jtrade-record-all
; h/ _. @& t, a( q. z$ j;;a list of lists,
trade-record-one组成$ l& b5 X$ q3 z( S* K& b0 f0 Q
trade-record-one
; a, c0 g0 u1 V4 z* G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 E4 ^' u! g0 X+ v
! O+ w9 a& h, i- Y; L& q8 E. F( ^;;[
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]]
% j& W/ k& U4 k: V8 `0 Xtrade-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]
4 r* d( i3 n& w6 D. I5 G$ icredibility-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
$ I: `  d+ z. Eneighbor-total$ S4 Q. y  l& u# l% W) ?
;;
记录该turtle的邻居节点的数目
' E* u, m# t0 A8 r% O* ptrade-time
  `3 D' ?* l' Q9 J4 D# [( S% F5 a;;
当前发生交易的turtle的交易时间8 V) A9 ]7 I5 Z! V- \  ?
appraise-give
- c- Y4 J' H, {1 F; s3 \;;
当前发生交易时给出的评价7 ?! X: F0 ~5 J/ Q" |4 `
appraise-receive
( G& F, `9 _8 @) D! F;;
当前发生交易时收到的评价
1 P' O3 g' S; M9 Zappraise-time
& U* f. c# |6 `9 e0 j" S& l;;
当前发生交易时的评价时间
$ ~) R. B" ?; R- Q# Z/ O. M5 D( jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉% Z3 \) l0 s: o, C3 @" T; {
trade-times-total
( E% W8 M, v! q& T;;
与当前turtle的交易总次数
$ T' c1 a* m7 \( Ltrade-money-total+ H, s  t2 s. A, _4 h8 N
;;
与当前turtle的交易总金额, ~; Z6 i& {) m% ], k0 \4 m
local-reputation$ ]5 `, F7 p1 y7 d0 e. A
global-reputation: S$ H/ @, o3 w, N5 C- w% y* F- y
credibility+ ^# d. h+ {' m% k7 n$ N# x: U
;;
评价可信度,每次交易后都需要更新: S+ }" u6 G" o) G$ t
credibility-all
) |: K2 w" I' Q/ z; e' a- R3 y9 c;;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: ]4 `- A* |1 I0 j! A; |
; Y  E5 W0 I5 K
;;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
6 h% U4 I( a: p, J' ~9 jcredibility-one
% u2 M% N: ^  J$ n% b5 ]4 X4 @;;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people5 L+ V- R/ p  L4 a# y1 i. R8 ]
global-proportion
! V8 J8 ^( q8 r8 R2 _customer
# G1 u9 ?: _$ X( Pcustomer-no; F. b. c7 ?% O6 d8 m
trust-ok0 E; P$ F1 Q! v9 W5 \" _1 k( ^9 r0 u
trade-record-one-len;;trade-record-one的长度
4 {/ R' w% x. l; \% n) r0 []
' c6 E! f3 G* a, [$ E9 p* U% z& D8 A+ o% g8 P
;;setup procedure
5 M& l& O4 d( e
  \% i2 {8 X( L: Z: ito setup4 e6 V/ S2 k' |# Q

: x0 g, J, n, K9 hca

( u& m$ o7 x7 i+ ?8 H; C3 _0 o' g1 _7 J4 _+ T* u' ^
initialize-settings

& M8 I6 C; J  b- B: r  l- e& `5 }" o$ @3 ~
crt people [setup-turtles]
: v/ A% y( x: S7 A8 E* C4 t, f( }- o

4 b4 t) t, e# Greset-timer

) @7 i' ^' c# @+ S4 G& w2 H* b
. a! h0 i# j" G9 i2 Wpoll-class
: P# P. T+ T9 b/ i0 U# L
0 w3 \% B7 ^. O* q# Q
setup-plots
7 K. b- w* i: y5 ?( B

& [" [  G! j0 n# ^( Pdo-plots

9 ?! K1 p/ D- X2 Wend( D, S* K: H% J- {

; g: m. N! @5 s. N6 x- U7 k( \- Xto initialize-settings- Z# a# k, R) E4 T" I2 q$ }

2 C$ V% J! Y' Zset global-reputation-list []

( l( v; Y2 \# p; b: b" E; G
, H" U" N1 v1 `& n) Oset credibility-list n-values people [0.5]
& y" _% ^/ d, \8 \. k9 o' U
; B) n" b! v" C- [, N( n
set honest-service 0

7 H5 Q4 }5 s+ Q: l- @$ _/ j* n  C5 S9 ^0 O! g/ g' z+ }0 `4 p
set unhonest-service 0
  o% L+ Z9 B% K, C" F

$ E. S. j3 U  T% B1 V+ Gset oscillation 0
! m+ ?0 f" `$ L; }; Q+ }  T0 `% Z

; I/ F7 ?! x; n# [8 `; Cset rand-dynamic 0

) i! M- K' {. ~: w% n5 Dend7 Y7 v. E/ b- q* ]4 r
3 g7 O/ I+ Z! _2 @2 D4 K
to setup-turtles 8 C9 K7 m- D5 D/ d
set shape "person"1 E, W; m/ ^* O9 e& A1 D
setxy random-xcor random-ycor' |: t2 Q" f7 {' @9 z
set trade-record-one []
& [  k* d* U! H3 o* y
/ T0 Y: X+ F- ?, y
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 z% r: K! M, r( s# ]) e/ X

4 O1 Q7 A* A, Hset trade-record-current []5 t' N: ?! C% s3 g0 T! t6 c9 Q2 W
set credibility-receive []
& m: L. Q0 i9 C! M( Uset local-reputation 0.58 ]" W  d( G5 q6 d7 T4 |3 ~2 q
set neighbor-total 0  S" s: c' z. D
set trade-times-total 0
% m3 z8 F& ~& m9 A3 I/ j  hset trade-money-total 0+ w) Y( a! E/ }/ I. M
set customer nobody0 d" o# J# q+ v1 P5 h
set credibility-all n-values people [creat-credibility]
1 G* {8 {; m. r$ Iset credibility n-values people [-1]
5 z( G5 m/ b; }/ ~5 F1 g* }get-color( J. |; i, n5 `% V

3 Y! q9 F2 J! ^) g- L2 t/ mend
! T. Z+ ~' i! M/ B1 G3 i6 G6 k9 i! u4 \- m; ^
to-report creat-credibility, Y9 F4 d4 z( n& t/ I- t5 \
report n-values people [0.5]
3 B& j! ?" k7 E5 jend
, P3 @  h9 R4 D! c5 w2 Z# b
& x, p4 t+ v" j4 Y' Dto setup-plots: x, \1 t0 v$ ?3 i- M6 W  _

9 p5 ]' |4 L" l- k) U& E9 Xset xmax 30
: H3 ?6 p/ T# I+ [0 X7 m

+ c. o& F6 Q" G: Qset ymax 1.0

% @! I% c: H3 t$ i+ K
( S2 S5 M' g! \- x" M4 oclear-all-plots

* p, O' O- N7 b  J1 H' f' o4 _4 [% u& t3 l) M7 T9 s& w2 S' E8 s
setup-plot1

4 U4 }# M! y4 P  W8 ~# s& `6 q. R1 s( F
setup-plot2
; A% s: ]5 X" E

5 `7 X( c1 s; a# x2 ysetup-plot3

; l8 I! q5 Q( U2 k( P4 }, @3 ?1 Aend- Y& x3 X+ {& C

) m- \' Y# y+ c1 m" y. ^- V  p;;run time procedures
; K9 [- R; t0 W7 e# a+ o
  h2 Q  X2 d; Q% B+ {to go
0 X+ c) P, Y) j4 X
1 s# S) }6 f7 aask turtles [do-business]

) X7 d3 H: ^/ xend! T, {4 @5 h+ t0 F! m  Z
8 w$ ~+ V7 P( D4 F7 Q& `
to do-business
3 [2 D2 n- j" W* p& X/ O& j
  D. P% q- T4 X) q3 O' A& L
! I8 A/ V6 z( ?+ U, U- x% F
rt random 360
8 ]: L1 c: S$ H0 o

) `) r- C' A9 a3 e; cfd 1
9 v: e+ H# V6 }; `: T: t+ j

6 v+ K" L% N; [. Z1 fifelse(other turtles-here != nobody)[

. r; q, m9 I$ B# W- s
/ R( p0 c# m9 ^5 oset customer one-of other turtles-here
8 E* M9 k5 S: H. h) R: a* t

1 W* G# L2 L' v" H$ _;; set [customer] of customer myself

0 C$ N# X* O6 k7 b0 a! W& a5 ?! z! E9 W  Y( d+ P& r# @
set [trade-record-one] of self item (([who] of customer) - 1)( v, m) @. v9 ~5 F) A1 Q' \" e4 T
[trade-record-all]of self2 Y' b8 q, q  Y, `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 x% |: d; @% j
8 c9 f$ U) f% v& ?7 ]" H3 F& M
set [trade-record-one] of customer item (([who] of self) - 1); R9 d( c8 {. f  d) b; Y
[trade-record-all]of customer
' y8 w' K2 |, C
: @4 M, |4 \" ]$ F) ~8 E
set [trade-record-one-len] of self length [trade-record-one] of self
7 a$ V2 R" z2 _
/ ]: Q% ~& ^8 F* K9 H1 }+ @3 u
set trade-record-current( list (timer) (random money-upper-limit))
) ^6 N( M( l. P. M  @- x" ]' T

  t& m' \' k# j( xask self [do-trust]" o9 y: Z- p( G
;;
先求ij的信任度
% v' K. A6 U* Z$ E1 `
) A: @, A! Q+ \7 b1 I* |' o7 R! e8 ^2 z  Eif ([trust-ok] of self)9 h1 \; B, j3 Q$ \
;;
根据ij的信任度来决定是否与j进行交易[
" a0 L: ~5 H# f* Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% ?- V0 `# t+ w1 }) `3 R
! M% V# g& G; l[
1 I* R3 W& K# B$ H  N

" ?( K( Q0 C, [. wdo-trade

& r, V! Q5 @! b  K% J& G# ]2 \2 V) r8 ^# K& @
update-credibility-ijl
, u$ G# Z+ A4 W# O! i2 v
/ h- B3 N) {  I0 a
update-credibility-list
# P; ~$ _. r6 t8 V/ v- i+ [- ]0 \

( |  o: T3 Y: h. H
7 s1 R" N) u% J! f/ |2 Eupdate-global-reputation-list

. h0 N3 R! l( B; L2 u
% n' J/ s) o! A2 y, O  p. \" epoll-class
! Y6 Z" D, S- ^6 v
0 H9 x) x& L3 y' V9 g0 \
get-color

/ ?) j& [) `7 d# G2 U8 l0 A: E3 J$ m  a6 a) p, `" f
]]
- o, M8 ^+ h) {8 M4 w
; a- a) v8 N' h2 v;;
如果所得的信任度满足条件,则进行交易  B: g/ g6 ~* {" S" |
6 Z- h% j' u: O( E% U) B) \
[
1 B- z9 B8 E; s( d4 m- ?
- ]2 P, V: M6 c. w# g
rt random 360

) S! o" V- y. H( ^+ q; h8 ~7 {; |1 o3 ?9 l0 a6 i! `
fd 1
' ], P+ _/ d& [9 _6 e
& x( N" `/ v" o3 W- r/ N1 n
]
& r2 R# j% z" `4 I  |

8 {0 A' B( Y0 U4 d& u$ e* z4 lend

" [8 _0 z+ u  C0 O3 c3 o' ?# \+ X
- M9 b$ [9 \/ j/ h8 Ito do-trust
9 Z  r* j/ E3 I- P! \; N) ~0 Oset trust-ok False3 h/ g0 O6 A/ L3 J9 Y# G

$ {  r  \8 o$ D9 E  R: X
* ]' Z( [$ s  q4 T; n" \
let max-trade-times 0
5 y; n4 A7 w$ Y- ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! e" f$ e) `- M/ r+ e( }6 T% H6 ]* Jlet max-trade-money 03 T- R" Q& O$ ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ y8 A1 K8 U  L! z0 P. U* plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. h' c; K7 A8 w' S
- A$ c- a' S& O6 v! n# g' x

  ?% S6 w* O* x( X# \# Qget-global-proportion
" W4 G  g( Z8 z0 L% q  a  d6 i& P9 s% hlet trust-value8 H- g2 Z/ M, U' r) C. _
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)

3 T# S* G# b* {- _# z' J0 {if(trust-value > trade-trust-value)
6 R! P0 K. t# f) n[set trust-ok true]$ o( n. C: O7 E* [+ ?4 a
end
6 y: o2 R- @" Q8 V5 i& g- I) }' V  E2 k; R
to get-global-proportion
0 q' i( ~3 l1 ]) Q" X- {: Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! V$ J: G- p$ `# |& V$ I
[set global-proportion 0]
6 E1 g. o/ D# H6 I3 v- v[let i 0: m+ z5 l6 R! g& S, X( N
let sum-money 0! K7 A! N7 B( r9 Z% X7 r# f9 X4 n
while[ i < people]. N8 y' P1 V" }
[
3 q# X' _0 ~9 Pif( length (item i* l2 k* `( O1 C& z; f9 Q
[trade-record-all] of customer) > 3 )
; h$ g, B+ f9 V& `, w
[/ w: X' ]* ]# R; r# k- R
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: J% I- o3 c  S* }6 z5 N% {- O* Z  N]. Z9 N2 a' I9 H, y! K" R) K
]
% h9 I& T# V4 K" x7 y: G0 mlet j 0
1 R" G2 \# W( t2 F4 d9 ~6 w  Clet note 0
# i# |6 J+ ?0 _6 ?/ ?/ D" p& |while[ j < people]
# y& |" X" {* p5 [  {% W[* M$ X. w% X8 l. b, }
if( length (item i: ?1 o/ Y) l# z7 v& n4 \
[trade-record-all] of customer) > 3 )
; B! x# m" y' u$ Z( t
[/ v' U6 E- ]' ~9 k! h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ X1 y5 g. v4 ]4 ]4 J& G. S; b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* }. m$ @) f, |) k! ~! \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& p5 q3 V# p4 N2 |
]& w: d* e4 ~: a. Y* Q4 |
]
/ L/ `% m, R8 q- hset global-proportion note6 J9 Z; w, O8 a7 T1 q. C
]& Y0 q2 ?1 @, \; c8 W% b
end$ |4 Z  }4 ?; c: E$ l& R
3 Z* ~( ^; c. C0 r& K/ T% m  V; T7 |/ |
to do-trade- Z5 c  K2 W9 l! n+ K! c% W+ Z
;;
这个过程实际上是给双方作出评价的过程
' W5 U  Z) A3 C2 y8 B  N2 L2 y- _- i2 dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ }/ r* W" g3 `$ `0 a7 P# b: mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# `& t  d$ i+ p7 K$ s
set trade-record-current lput(timer) trade-record-current: Q) K" h0 `! P/ G) h
;;
评价时间
1 [$ l5 U6 `7 Oask myself [
0 W: P4 i. t! o, V/ ]0 m3 b, t  eupdate-local-reputation" d$ ?( B8 g4 |9 C/ B  b
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 x! l( t+ c" ~6 H0 Y]
* r/ z/ {# X2 L' l; y& u% p' Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 K# ?- K( b( W: D
;;
将此次交易的记录加入到trade-record-one: W, ]" w  _0 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# X) f. |' m1 q' Llet note (item 2 trade-record-current ), L) J3 u& |. M2 W( H8 K
set trade-record-current, C; F4 W$ _$ _) \" M3 |. C
(replace-item 2 trade-record-current (item 3 trade-record-current))
  L+ z2 a- A8 P7 `1 i' M& ^( e
set trade-record-current# _2 e' w/ \) t+ k0 M" c
(replace-item 3 trade-record-current note)# ^$ ?0 z. t" i; A3 G. m6 A
; i& z8 [: r- f

3 h2 H: \0 `4 K/ j" U- H8 Q! pask customer [8 s! i# I4 Q) P4 k
update-local-reputation' X7 p) _( t- R4 U( N7 F$ N
set trade-record-current* K8 O) {# e# S  a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- M2 Z  ^8 r' P9 k) W5 F
]
; y8 H1 c, {2 b$ `9 ~  p% L, Q/ a3 h9 l: {( x
5 ?0 c$ A8 z# ]& O6 f% E: H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 D# V4 T9 t# r% O" f; U9 c7 u
7 i' w9 U& i2 [  Q! [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" Q- X5 Y0 L4 H2 Y3 Y;;
将此次交易的记录加入到customertrade-record-all* W( O* H2 }. ?
end
$ n2 V/ e$ l8 {7 j% m+ |! ?, l; K! u* _7 Q; B- r2 a( A
to update-local-reputation
+ V; w* W& V* N0 F, w7 G1 K* L, fset [trade-record-one-len] of myself length [trade-record-one] of myself8 }; T+ T- R4 Y! ~

) q& Z* Y2 u( D- K: C; T
! D) s. [' l! E# |+ _;;if [trade-record-one-len] of myself > 3
6 r4 T8 w: v& ^2 \' J
update-neighbor-total2 i$ I& r4 |- g) ]5 i
;;
更新邻居节点的数目,在此进行
. d; X; |# a" plet i 3  |% t' ]  K; `# ?
let sum-time 0$ i( X/ E- k; A+ P" e
while[i < [trade-record-one-len] of myself]3 c% @9 F# ^0 v8 A4 M& \  s  a
[
& W" r; g# P; f: Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): i. G, r' f9 _- U8 m5 w
set i- q/ B4 O/ M* j  A
( i + 1)

2 J( z' F# e! s& _# i4 a8 v]5 z9 ?+ ]/ A/ u+ G- K* E
let j 3
, Q$ d! j/ o. X+ Jlet sum-money 0/ K! v* r4 B& _2 g7 R
while[j < [trade-record-one-len] of myself]+ R; S+ F- ?! T9 g& e- M$ o
[
* P% N- M0 {4 r7 F, Y8 Q2 Z: yset 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; w0 E7 `4 k  R
set j. d" f# v  M) v  A* h! v1 ]0 O
( j + 1)
7 B, T" y* P0 \7 o! C
]
$ T: l1 A7 t% F1 [3 |let k 3) R1 j' j" a; R( h9 l
let power 0; S) U) g# T$ r# y) `! f! y+ P
let local 0- w) H6 C8 o0 ~; I. i
while [k <[trade-record-one-len] of myself]7 ?+ p4 |4 T) w! b0 d; `
[5 T- `  Q8 w7 E# m& A' k' C
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) 1 q) Z7 r. c. g( _
set k (k + 1)& |0 A; k: p+ K% e* n% |' v, ]2 q
]$ ?+ H; F/ T: c2 y2 {( j
set [local-reputation] of myself (local)
3 P# s0 O; Y- @5 s6 _end
1 G8 g, T+ G9 M; T9 X
5 |& {& w# K8 Y, f5 Ito update-neighbor-total2 i% u2 Q8 r4 T. M' ^" c3 t$ K% ~

9 j+ i3 M" f8 O: u  E' ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ C4 ^1 u% Y- f( A, f; [5 h9 O& {, V, b4 k
+ X; ?: z* D4 L5 t! p
end9 H' F4 }- z- K. ?
" x5 l5 O( p0 R4 F) t5 |2 F
to update-credibility-ijl 2 Z" t- R5 ?' G: {7 d
0 {( u/ n* p$ Y2 M4 b
;;
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。2 Z  _! a0 x! [7 H" }* |6 W7 o5 s
let l 0
! n) l) y' s- \4 j. w2 Pwhile[ l < people ]
/ u+ ~; o% S6 Q' R  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8 J# M+ m& W* ~
[  |9 Y+ [! _# Y$ r/ e7 l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! ~4 Y( D5 [# T4 g' d' w
if (trade-record-one-j-l-len > 3): l" N+ s% \% T/ [0 U: n
[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
4 _6 b! j! M$ u& k  S5 G! e: n: R' Klet i 3$ f/ E( V. U% R" \7 f, R( r
let sum-time 0
4 V" z$ g( a, V' Q, x& mwhile[i < trade-record-one-len]" d9 F3 X  ~& i
[7 T3 L) j9 @/ `& L9 x/ f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 w# [8 J, {: O, Z; v; Tset i
. S& T1 s" _5 c3 ?! y8 J1 L( i + 1)

9 _6 \) Z/ Z* D: e6 M. i]( i5 L! Y" u! _
let credibility-i-j-l 01 f# |& e9 [. o6 d: [
;;i
评价(jjl的评价)
6 F, ^/ w4 x! Z! @& u# [2 p9 T$ Ylet j 39 D, ~" `" h0 ]2 ]6 V
let k 47 i- P& k2 W3 g: p, x
while[j < trade-record-one-len]
$ x. d; l7 y* d6 b5 E9 [[
! w" f* P9 \/ O2 [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, z: {6 q, }, Y/ [) [0 s( t
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)
' n& y3 h! G+ fset j
# A- F1 ~1 M! q% J+ v/ ]( j + 1)
* T* J. {2 X3 p/ _, @& a) _' _
]
. u1 H  @0 o" Y% ~% T6 {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 ))) U: ^( L$ |- _

. v; d( L  Y- f2 K" n* r4 B
7 S  T3 q* t6 A3 x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ p: F' F& ~5 d' D  L" W; j- r3 K;;
及时更新il的评价质量的评价% m2 X- E* c5 [$ S' ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' A6 I: S! G: y2 J! K: a! {
set l (l + 1)
, D! B! k( Q" o. c9 Z6 B]
/ z: H! f( j( q! D1 j6 z! _end
: J6 c1 A/ X5 o% L  ?  o! Z2 j4 H# l# @" j6 v$ L
to update-credibility-list
; b6 o" ?" h' v- x" m1 I2 Zlet i 0" t- ~9 a/ q4 u% b
while[i < people]4 P' u  l- S2 H
[, N. P( V2 {  K4 ?/ F) }8 Q+ T% z5 [; H
let j 0( P4 k9 S9 H; b, ]8 x7 K
let note 0
, g( J8 R6 r1 C  Elet k 0
' b- f5 }& F! g2 r- p! c: `;;
计作出过评价的邻居节点的数目5 |" D. `: ^4 e7 O$ d
while[j < people]
  u4 t# n# H2 d, p# V[3 h2 J* n& Y" z7 v$ G6 w5 ?- T
if (item j( [credibility] of turtle (i + 1)) != -1)
1 Q3 ]0 o0 T0 L3 y. S+ B;;
判断是否给本turtle的评价质量做出过评价的节点: M$ b0 u$ Q. s$ m2 v
[set note (note + item j ([credibility]of turtle (i + 1)))% c( ?2 B1 n* Z% A' d* ]' ^, }" S
;;*(exp (-(people - 2)))/(people - 2))]

7 p; |1 A5 J; i! {# E5 Qset k (k + 1)5 C0 j' L8 N3 i
]
  \+ M+ e; x+ h/ k1 v' a+ z+ D2 m% nset j (j + 1)/ q4 q9 {$ Z. Q" e5 v0 {
]
( T/ ~3 \1 {9 h. Fset note (note *(exp (- (1 / k)))/ k)/ J4 R4 ~9 \, x! p
set credibility-list (replace-item i credibility-list note)
: Q4 j* m6 ^, |* F7 N) |set i (i + 1)6 z0 e" b2 c. h8 A8 ^, \
]# N7 o- ?6 h5 t" {
end1 |' U- u3 E) T3 P8 O; D. J) V
' B3 H" f  C% C+ g2 S
to update-global-reputation-list0 x+ \5 ]8 n# t! u* o$ x
let j 0. [" |0 e" @  s* n0 w/ L/ o* P' D8 C
while[j < people]. b6 t( S) u7 d- Z
[9 C4 t, F5 h6 _0 F, R, ]$ K
let new 0
" ~! r! f! Y; s& @! ];;
暂存新的一个全局声誉
( x7 i2 }/ {+ T1 Llet i 0
5 G! ?+ I$ l0 }# H9 }let sum-money 0
* S: W! z* }4 Y3 M( T& Plet credibility-money 02 f& V" z3 T4 i/ i
while [i < people]
( M( f8 Y' G  F, B[- K4 e8 T, b; {; \; u: c- e' ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 N; {8 N/ Z6 n6 s; n( j0 t' `* Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 U6 v, f$ Z' J; [& L/ Z
set i (i + 1)
5 d5 T* X: I7 s# I* `]$ V* {' T! Z6 {1 M" w3 P: f
let k 0  X0 b! w/ ^! i
let new1 0- m- L' d% y4 o9 F9 Y" g" d
while [k < people]
. Q0 ~7 e9 }( ?[; T$ J" {5 V( ?2 ^
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 E1 ^9 T# _5 h$ Kset k (k + 1)
/ H& y* m/ a7 R" R0 B]+ d6 c. B( Q: k& g, D  E- \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   I" w. @" V6 l) ]2 M6 Y& a
set global-reputation-list (replace-item j global-reputation-list new)
, f1 s) Z7 f/ _6 j' w* `; e0 [set j (j + 1)
' v) n1 \% w8 |. L& B- U- O: K]
+ ~  ^3 F# c* G0 ~. ~- tend  B% h0 j1 B4 E

7 u2 s" R9 ^3 N' X4 }% J- z2 U$ C1 n! B

# D( h$ \  o: a# Vto get-color
1 A" w$ F/ w! ^- \% q8 [% d6 ~) c
3 t% p' A* U$ }% [0 c0 tset color blue

, H# H& }  R' c- xend
* W7 h" P- m5 a: Y" D! m/ u7 z- v( g, Z' _+ r& i
to poll-class
+ M7 [& }: n  H1 j9 Eend9 n6 w  W: j& F' @" }
0 _- `' V% a8 k  L4 L  z0 H
to setup-plot1  T# e: K  J9 }! [
1 X* f* Z5 r2 J: Y# z- {9 U( p
set-current-plot "Trends-of-Local-reputation"
5 f/ v. L' D6 B- O

" [& A8 F2 \, Qset-plot-x-range 0 xmax
' b: I& r& j- x9 l/ {/ `5 p
$ k3 D$ O2 J" B
set-plot-y-range 0.0 ymax

0 {, E- ]  w" D' X6 Q7 Hend
" B; i( x( ?% |& U; g
+ B  X( F( e4 _5 g% r8 yto setup-plot27 @$ T+ ^/ o6 b; X

% H- H6 U) G: ?, a3 eset-current-plot "Trends-of-global-reputation"
' B0 Z1 E2 J+ b0 B. g( d( C/ r* Z

6 f$ r. `$ `/ \# l; d$ iset-plot-x-range 0 xmax

  j# \& h$ v7 O" C, Q& m
# U4 B: E  U6 Nset-plot-y-range 0.0 ymax

' l- G, I& v9 `4 N5 P* w# i  Eend
' x/ @. W) b- p* i  I- l# t1 _/ _3 k  G
to setup-plot38 s6 }* @6 ^& c! Y
- k: Z2 d1 N4 T+ u+ L+ I
set-current-plot "Trends-of-credibility"

* D) |" m. W2 y& `1 k5 H9 [+ \7 k( g# x  i$ p% i
set-plot-x-range 0 xmax

  G6 O" n5 E: a2 P5 ?$ e! Y
/ b- c3 \& c* D: K7 R' {3 fset-plot-y-range 0.0 ymax
* e% r! P, {% C* p% M; k' ?
end. {) M; e1 ~4 @6 I
/ w- r0 |% D5 o; d; @
to do-plots3 a; F2 M6 _( W  ?( e7 x/ C
set-current-plot "Trends-of-Local-reputation"
4 Y0 \( i8 {' Z4 v6 Lset-current-plot-pen "Honest service"; {: ~. L8 t9 G
end% M& F' Z) E- g6 s! m

; o& s! _' c$ k+ q6 D6 h[ 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.
/ M0 y9 P) S& t+ k. A4 ]. @, f* p- U4 G
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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