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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:
+ O/ h+ }+ {" Uto do-business
+ A) r8 M% ?) k, b" N/ {: k rt random 360
" L& l# @- K# V. Y/ L/ O fd 1
) m+ {5 U" `: N; R+ |* m ifelse(other turtles-here != nobody)[* {- @- N' H' n! Q, |" z( 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.
5 o* B4 J9 j5 U' O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ C: P6 y) q' G) G1 L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- q9 \1 d, t2 K- {" Y3 I' V; ^
   set [trade-record-one-len] of self length [trade-record-one] of self" y: c4 A3 L, ]
   set trade-record-current( list (timer) (random money-upper-limit)), s2 U& ~! t5 k; m! n3 p4 F: N
6 \5 j$ L. G' f- N) I& c7 ^. |1 v
问题的提示如下:
+ }$ l4 x& Y% Y& L! A* P6 J7 e4 B; n  g, P6 |, u
error while turtle 50 running OF in procedure DO-BUSINESS* L9 T( b3 ^) u- w3 \9 w/ |
  called by procedure GO! O) f2 L5 m7 y1 W3 I$ A( |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! h; z& U- c4 L6 ~( b1 q+ n
(halted running of go)4 B; n- j$ O% g$ v% \  U
% G7 b) W7 X* @6 T
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~~
' ]$ \* f7 y2 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2 R7 S9 }2 {5 E: z
globals[
' Z. Y6 e/ i% M8 R: y' `, j) ~xmax
5 f4 X- o; P" f0 C3 wymax* O7 F/ i. ^6 c8 n) `) ^
global-reputation-list
0 u! Q; F9 A1 [, M, I
$ `1 Z1 |  s5 J8 Z- n;;
每一个turtle的全局声誉都存在此LIST
, Q5 c2 G% D3 Wcredibility-list
& i( \4 F) y, ^8 Q2 X: s" ?: N;;
每一个turtle的评价可信度; \. K) |, F3 ~# y" {/ k* x
honest-service( `7 _3 j  r- F- C% Y# ?$ u- n8 k6 F
unhonest-service6 {" w0 S" u, Q' A! D  [  h; {
oscillation, Y  a4 x) ?  R: t) n/ v! @  h
rand-dynamic
* X* V  `6 h2 d  ]1 I7 `! E5 w+ D]* j; R5 Z. ^$ r$ K" P; b
1 c6 c1 k& g# \3 v) a4 ]& o
turtles-own[; ?1 t7 x/ b: _: c3 T: Z4 T/ N
trade-record-all$ f6 P2 J3 Y, Z. u/ @
;;a list of lists,
trade-record-one组成. B* }) d4 o2 T: }6 n/ O
trade-record-one
1 m' f" D8 k1 e. c! P) a+ h# C% x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) q& M. }  O. T' i& W! ^
2 U* t/ x( k1 y2 `0 M;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]5 t4 W9 u/ o  E4 `: h8 C! _
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]
8 s, D- s& w. W- R0 q1 ncredibility-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
. H9 a1 u7 P1 I8 \5 y# T& u. cneighbor-total- [. q5 u) ]$ L8 M" Z7 A& R
;;
记录该turtle的邻居节点的数目
( B. T% K; T: v' P% s) s( H) A* Ktrade-time+ N; F1 H8 u+ B: ?
;;
当前发生交易的turtle的交易时间
( b3 K5 F: S( p' Q5 o: E- \: ~3 g& Rappraise-give
3 o. ^5 }% X) D; ^  \% Z. O/ G;;
当前发生交易时给出的评价, l7 i5 i5 F/ q8 V! N8 t% o" l1 k( W
appraise-receive
  A! Y3 g7 H+ Y7 N) z;;
当前发生交易时收到的评价
7 e# M3 @8 ]. o; ]; a1 ~appraise-time
0 f9 Y7 a" B- r5 }  {8 T) k5 O;;
当前发生交易时的评价时间
% ]* g  S1 B8 @' Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 f  C2 h1 @$ k/ z
trade-times-total
7 T5 I! C3 c) c( L% m: }; s7 };;
与当前turtle的交易总次数
: `; ]7 I/ K: J4 D! b) g; [trade-money-total
% x/ M0 \& E! L# j. z;;
与当前turtle的交易总金额+ p  F: B" w9 G% q
local-reputation5 \5 X. |: T$ f9 h' \6 A5 L0 k: e  p
global-reputation3 n. D5 Q/ a3 m8 L  Q7 f2 C9 [3 I8 V7 ^
credibility
+ j- x" V) Y$ l7 z2 d8 P;;
评价可信度,每次交易后都需要更新
$ V2 t. |. l# Y  xcredibility-all- B, O. q! z. S
;;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/ m# k/ v) @( u+ t: h5 f9 O$ G

# _8 R! q9 B8 A$ A& h5 W4 ~+ r;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
7 X( u3 L  R) ^: H; Ucredibility-one
. z# s# k( M, ^0 h5 I' K  Y' o) O. k;;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# I1 X) K% K5 v! ]/ C5 {
global-proportion3 v% r0 `2 C; A( k) r
customer' }$ [4 o2 X; H, d7 h. z
customer-no# q* I0 A0 W) N7 [& s1 g2 F
trust-ok0 Z" F( y5 d' A/ v: t- h/ f
trade-record-one-len;;trade-record-one的长度+ @3 k: o2 H4 @' Q% Z- t
]
! G6 ^8 ]2 S: j
+ E* ]) ]3 b  `;;setup procedure
4 j, [) ^; b8 z! u4 m6 L, e0 l# a/ {5 a2 ]5 c
to setup
& d5 y- A+ j3 G6 s
  L% e# p( J4 @& [7 d3 e. eca
1 m) {5 ?! Z0 U6 ^: U+ j' d

2 \" B8 n: i7 I! e$ binitialize-settings
8 ~' ~2 R  H& M3 C) ]

/ t0 s# U) ?  o1 ]+ Z* vcrt people [setup-turtles]
8 I+ \+ f# _4 d& w

2 o- e0 P$ q* c( V0 P$ S6 Yreset-timer
, n- L3 s# z& u" R5 |  O, V

: l% Z1 w5 X; U  q- epoll-class
  ^3 P/ s% c. J
4 e+ g; Z- |, ~* M0 v5 p
setup-plots
* {0 `; c) p  S

4 a+ [' b" x8 n) @' d, Gdo-plots

6 N9 H, l5 s! s7 X- `. _end
3 B, }, F: m) t; P4 i4 M, o$ p! e
( Z+ p: r& |" W  I0 r4 k  zto initialize-settings' [. w% e' x- }( A& Q$ p8 W

5 H- c6 ]# i. E* Yset global-reputation-list []

+ x$ j7 H- _% d7 p
+ n; r# s$ B2 j2 c! U5 zset credibility-list n-values people [0.5]
! s' Z. C5 l* ?" h; o
* C: p) ?2 }5 G: H  s; U
set honest-service 0

) ~- M6 o* N, y% `+ w
% y9 _$ O( [* H  @5 M0 F+ Jset unhonest-service 0
( Y5 U; b5 V$ z+ V7 y
: ]7 s3 w1 l# x$ S) F4 i/ d5 A
set oscillation 0

  G4 T& D0 P3 O2 ~7 Y1 V; U
! c2 _" g- @% W$ |: Mset rand-dynamic 0
/ W6 g) A/ a$ Z" {4 \9 s# [9 t
end( Z+ k% U# y' G, \! M7 c

5 w, a" j( j8 X/ {! {0 c/ P. jto setup-turtles   X% O9 ?8 k& n- y/ S6 w3 d2 M
set shape "person"
; J- Q" l: l* ~setxy random-xcor random-ycor
/ i  v2 k1 \! x( Y: b  p% W: Xset trade-record-one []) _+ [+ @' ^; Z+ |0 N' j
  u( ]* R& Z% Q" q! g$ {* D
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 r4 J( W9 @) \& a8 d. i; h4 ?4 e4 h
' j, i. I% h# ]; x
set trade-record-current []
/ d# R( [9 n' D  ^. F* z" z) }9 Tset credibility-receive [], O: T3 o0 Z' }" p8 T5 ]
set local-reputation 0.5
+ v( U8 t1 F; G7 z# Y$ t5 b8 Qset neighbor-total 0
8 Z$ H! _4 K4 h+ Uset trade-times-total 0
0 |; F+ t1 U3 F  ]) s- ~9 Lset trade-money-total 0: d& ]' I# V, a5 U* i0 W
set customer nobody
; C, D; V4 w2 ~, i# x/ ^/ ^3 zset credibility-all n-values people [creat-credibility]" c, K! x1 F9 u: g# {5 q
set credibility n-values people [-1]
9 }. N7 k6 l# u/ R5 Iget-color$ U0 g* ?9 E+ x* o
2 [3 U6 l1 g) U5 i& }
end  }) M8 }/ H, R% j

( Z1 k8 `" h2 d, O6 b( jto-report creat-credibility. M! [7 A! ^7 f6 H% ?$ p) y
report n-values people [0.5]" j$ H' u7 d% ^2 i9 j
end
( P3 Q9 A2 [+ R  B* Z2 n
( t+ N! c  F0 _$ N2 ?5 pto setup-plots
! V4 e+ _! g1 f1 h1 Q; `8 m5 d9 A3 C5 t# r
set xmax 30

& M4 w" T: f, r. ~" ~- u  I4 S6 h) C- r9 @& W2 l2 x! d" ~. O
set ymax 1.0
. _8 D3 k, I* _; ]+ Y$ G6 f; t

  Q8 }) L: e4 Z0 n9 T/ d7 qclear-all-plots

& l" Q2 i0 S, Y6 `4 y. N! k8 m3 I5 s3 v- O9 I7 y, u
setup-plot1

) d: P' m% [- ?' @, v
( z1 S: R0 D8 T3 j" Z3 g' v  ?, zsetup-plot2
. c( w1 D/ R# c8 M0 [5 I; @& n0 k

* H& p. G* \0 S! m6 X' i, C& Gsetup-plot3
' S+ A( e/ l7 Z3 n3 J
end( L5 }( Q: k& E, }/ E

( o% b5 N3 z9 u4 Q; u% W- S;;run time procedures
$ i" e) Z( h) ]" r0 {# G5 M5 N0 b9 R7 J# S$ V& i9 C/ F
to go' t6 U+ z7 L  H' F( ^
# W+ \; |! O4 Z" V( s1 `- a
ask turtles [do-business]

0 e4 |% L: r" q5 r9 Lend8 S! B8 s7 F+ M4 p
) W8 a2 f( P( q1 Q0 Z2 ~0 l
to do-business
; b- p  ]1 b: h/ d) q! H9 e3 v

* m; O: e* a, e$ a! U( K+ s+ j' `: B4 Y, o) f9 }" V
rt random 360
* _/ J* q; p1 b7 v
0 m% _/ v  C7 v7 ]% c# Q4 L
fd 1
" [, e9 P# d. @2 n- Z  e6 f

& Q# K8 d% E; X  Oifelse(other turtles-here != nobody)[

( k, g6 n1 f( d; Q+ `' u9 L# ?2 C& R0 x+ T; |8 N! [
set customer one-of other turtles-here

' ], N3 C1 I4 O- B
, t! K. g' b3 ~. l;; set [customer] of customer myself

* d8 t9 S8 ~' Y0 z, K- }/ h7 f0 d* J+ Z- |/ ?$ a
set [trade-record-one] of self item (([who] of customer) - 1)3 ~# U7 G" D1 L8 @# b2 {
[trade-record-all]of self$ `0 |6 J" H- y/ g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* Y* W0 H" h8 r8 M9 Z: v* p, T. g6 A5 L  v
set [trade-record-one] of customer item (([who] of self) - 1)$ x+ J3 V( O6 p( u# s2 o
[trade-record-all]of customer

; C2 f  Y' k0 y* y
( p* I1 p* e8 q- X2 P; |9 }set [trade-record-one-len] of self length [trade-record-one] of self
% Q# O% A  D6 {+ \+ p- ~0 n

9 e$ E' `2 N( qset trade-record-current( list (timer) (random money-upper-limit))
3 E0 C' a5 M' x5 O% ~; D
! z4 i9 o  r  P, z
ask self [do-trust]
. A, S5 l1 Y# j2 F% G$ d;;
先求ij的信任度" B; E( m4 v2 }$ t

& d2 X8 R1 X( r# P; |& jif ([trust-ok] of self)
$ j$ X$ A$ C. [. Q/ F; Y& n;;
根据ij的信任度来决定是否与j进行交易[
; n! I7 ?5 T: w5 Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 H* k: e7 F; y7 O  H9 N0 r" q) K. X. n0 T. S
[
$ R! W9 _) a! \7 g  p5 e

; c* o' T. f) o2 I( sdo-trade
" k9 g% M" U6 s7 ]; t, f. s. F

: I( A# p3 W1 _update-credibility-ijl

* }5 G6 f  x& ]  G+ D6 W9 J5 R$ C- K
1 d5 [0 t) r6 S6 {* Zupdate-credibility-list
$ B) T7 o( b8 n& [

& D9 X  U# ~' n# l8 s7 l+ D/ {! h
/ s4 n9 |# B, q8 i, ?5 M. Iupdate-global-reputation-list

. Y1 w4 e; Y, u; {1 v3 \0 E
( g: N) l/ O; c2 Ppoll-class

7 \! ^+ m0 u* T+ G. k$ [/ ?5 G7 N" {  X8 ~
get-color
- H2 I4 N# m- R6 u# A
/ K5 [6 d7 v& X+ z8 a6 ]
]]
8 Q# Y& s  G) U* T+ z3 S( `6 }* x6 {5 b
;;
如果所得的信任度满足条件,则进行交易2 l/ @$ V4 y1 Z& t
8 q+ c6 ~+ Y# U3 y0 m  P! ]2 w
[
9 ?+ d) @" }9 B# l: h8 `8 |$ g! ^- I

/ @. v7 ?! `8 B! x( f) n6 z* Xrt random 360

- B8 L* n3 d  ^% d7 h+ C1 h8 G( R  Q/ D/ j! j9 v# h
fd 1
+ h# [; c# v" n. `; y$ n

- w) O& e4 W9 S/ d8 @3 `]
# O3 N, {2 N7 ]. b4 `( l$ j
& b- l% f6 O, [4 \/ q1 }
end
; W& S' F% p6 M" B8 n+ c

; S5 B. x' U$ ^6 M7 A8 ^to do-trust
* c" O, |- Q* K* v6 G3 k) \set trust-ok False: \0 Q" T5 w) _8 ]7 ~0 s! x  L
% }1 |' c. ]( R- |  b8 |
4 F9 p% X8 a% V- ^4 `
let max-trade-times 0
2 U! i) U$ `% B9 @2 d2 e. c) iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' s  r( Z  [( x' N& Z8 k% _
let max-trade-money 0; F8 h* W; u% H( E8 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ p2 w1 E( x8 U# j% H' Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ m% Z( L2 t- Y* R1 E" I) L
9 A' s" f6 d/ f* y! j; X
  B  y' G# `/ T* u2 w
get-global-proportion
) T) X0 ~6 D0 D# T, D+ Alet trust-value1 [4 Q) \7 N# }; V- g
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)
$ L9 s, a- t; O7 A5 R
if(trust-value > trade-trust-value)8 \; E" u# E+ v0 G: w
[set trust-ok true]
- ]; E, k1 J) f9 [  E. A! f6 Tend9 @! \; _6 V4 M

! b/ ]  Y( o  U3 _  P- o7 [7 nto get-global-proportion1 [1 T# C/ g5 }$ f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' e2 l6 D; g5 J% M
[set global-proportion 0]. n, u, m9 t, c2 \8 q
[let i 0
% m$ V# [# M! j3 Klet sum-money 0
2 b% S' [. o5 i2 F) E' t. lwhile[ i < people]
' p8 t4 V2 r  p7 F1 m7 ?4 m[
4 L3 p# k3 U5 f$ U% d8 Vif( length (item i
) u- P$ ], _& s. J[trade-record-all] of customer) > 3 )

8 j7 z; W8 d3 r5 ^* z& w  T. u[9 r9 {6 Q/ p1 M7 N0 z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): _/ _* F$ B* z/ B
]
$ t' B. R: A( m" ?3 d' m% v2 n]' `) {9 A, z" t! e+ B5 x! q: R
let j 0
+ V, [! h2 j" i" U: T# Clet note 0
. T: w3 A/ V% I7 X! J5 |& q# }while[ j < people]
6 v8 R3 S7 k! N3 a# l$ U  a[& u5 {9 b  G% Q+ B8 _) f! M( c
if( length (item i! M; [5 \* r# e, U/ w" ~- v; g' Z8 X
[trade-record-all] of customer) > 3 )
0 a8 H' Y5 d7 n
[5 h! D9 D% t* X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. k+ J' b: ~3 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 g4 k+ B6 h6 a8 D7 ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ [  w/ m9 V( ^1 V* e: T: r& `9 X% u]
2 n2 ?& H( x7 W]
$ x  T: {: O- P# Y$ @' E# V5 Aset global-proportion note
- d8 }% K6 @: n- w]9 [- M- E' @  a: B& x3 }2 H; K1 D/ _
end
. }& q* ?: W1 A5 M4 e
7 v- s/ T% j1 Y* v. n: |. gto do-trade
# ?, B' c) F$ E7 T8 ];;
这个过程实际上是给双方作出评价的过程# u$ @7 W. Z! ~- u, M. K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ V" z* K7 y7 E& Z0 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; ^  E) S, H1 {+ Kset trade-record-current lput(timer) trade-record-current+ J+ C  ]; W/ i; \! ]
;;
评价时间" d: I( Z  ^1 M% s7 X" x; H+ \, x
ask myself [  F! Y) _8 f5 O5 M5 o
update-local-reputation1 K9 n; ]/ ?4 y, a$ o' f5 C4 R
set trade-record-current lput([local-reputation] of myself) trade-record-current; I' [! k  N. n0 c5 L
]5 T  J; O2 O( {% c! p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) c1 a& b* u' Y' y  v9 X;;
将此次交易的记录加入到trade-record-one
/ t; J& g" q& _7 ?4 ^# S" E4 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 ^, d, d2 n# `% h  u$ X  g% J2 }. [! ?
let note (item 2 trade-record-current )
4 ]9 v) q( D. Nset trade-record-current
6 O4 U& a. S! I' ~8 {, [) ]% h(replace-item 2 trade-record-current (item 3 trade-record-current))
* F5 O0 n" i. N. R
set trade-record-current% ?+ u0 k. t* o+ K5 g5 G
(replace-item 3 trade-record-current note): o7 q. E6 t# b4 S; X

1 U* H* b4 k6 j5 [, L% |

) c; S) ?$ Q" k; O. Lask customer [: d8 E3 H0 ~8 a; \3 E8 J
update-local-reputation
  p  I5 ]; [/ E2 Gset trade-record-current
/ f8 \/ U0 \2 P7 t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* ^" n3 s& X% d" I]& S/ e7 K9 ]7 n4 T

! @4 n* w7 a! F* H6 q8 F4 m- d2 |

" `8 n+ n3 ?5 I4 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 |6 |9 T9 ^7 u' K/ }& N+ }1 r4 J

+ w+ i$ A2 Q- u+ M" G9 Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; K; ^5 n4 ]* g: ]1 P- M: t;;
将此次交易的记录加入到customertrade-record-all+ G, t# `% Z- k/ j, y1 L* ?) ~2 l/ W% D
end, ~+ T7 w  Z# m: \1 m3 H
( ?8 Z( n+ d0 a
to update-local-reputation
, a' X2 e! W; [" Aset [trade-record-one-len] of myself length [trade-record-one] of myself9 C% M7 }" U. j  S7 Y, @0 o
( V' s4 i3 v5 G* i' R' i: g
2 P+ z" ^( Z9 B: Z" @% r" w+ \
;;if [trade-record-one-len] of myself > 3

$ d- |/ T. @% \; V% J9 @* eupdate-neighbor-total
  y7 [; [9 n$ @3 Q;;
更新邻居节点的数目,在此进行
1 y1 p; Q5 ^. f% `4 w/ Glet i 3) e6 w  `: r4 L6 |2 I2 a- P
let sum-time 0* m6 M# f5 b9 c/ v* V0 B
while[i < [trade-record-one-len] of myself]
3 i2 V' J) m- ?0 G! A4 {[
% l; l0 ^# l" p- s% k& e" ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  s5 s1 p. b# ^* P+ g& aset i
3 e4 [, B! Z0 Q( i + 1)

: ]/ |+ j( G. p9 y- P]
5 h4 Y& D* P! d3 U; ]* R/ X1 v- H' jlet j 38 y0 J$ Z1 ?8 t  I$ U8 r3 p6 W5 ]
let sum-money 02 E6 x& f4 [0 N
while[j < [trade-record-one-len] of myself]; |2 B" n8 i( n2 \& A; G
[
( p! X& i9 \' K, l2 Y' |7 j. k& D+ |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)
, X7 ~: {% I: {/ Cset j
) U) p/ T  b3 a, g8 F: I( j + 1)
& O1 \7 t6 U! J( `, ^1 _% \) \1 s1 z
]) T* z  }( X8 r5 b: R
let k 3' u$ M% {+ x4 n
let power 03 e+ W( T$ n+ W, \* v# \3 l+ v3 b
let local 07 S: k9 c0 q$ Y  Q1 l. l" r/ Z
while [k <[trade-record-one-len] of myself]
+ g+ ^9 y' ]. h$ b' @[
. k/ l1 R" U2 F8 o. W3 Rset 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) ) I# A; ^' P2 l% G
set k (k + 1)# v; c7 D2 ?, R9 h0 N; O
]
& E) v0 {' {7 D3 nset [local-reputation] of myself (local)' A* P+ r9 `& C! T) P
end' R8 R2 D" ^! \" n# t3 z
2 Q$ K* B- N/ E2 M! [
to update-neighbor-total
4 P1 ?. {. `, N1 e3 ~  ?( h6 Z8 ~; j3 \0 n, D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. K  s- b& w; J2 y- z- G4 Y" z5 F/ A: \# w! E5 b
6 V) c% I8 K# J
end, Z( [. i( u6 Q# g4 K, g
- d1 D# q( b) e6 f2 t9 c
to update-credibility-ijl
$ K4 p5 j9 D/ h7 t  `7 p! V: }3 I: s. S1 e2 A3 [5 Q" L7 c
;;
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。4 V5 L3 |, l. c! M
let l 0
$ \! R' V- r+ l/ I! I( cwhile[ l < people ]
' U( s" m! K3 q/ n; L6 l;;
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) O" I+ {, b6 [+ T" N$ Q8 u
[5 I7 E, a$ z9 J8 G4 D, [& r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  j( n1 H/ b9 _" p& Mif (trade-record-one-j-l-len > 3)+ v0 j" ?4 R) u7 i
[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  ?) ^5 t. L5 \* [5 @7 H
let i 3
4 U# e8 ~$ c' Y" j- zlet sum-time 0! q* Y! \$ U- Q/ W* w" v& p6 X  y
while[i < trade-record-one-len]
3 i: {+ {. b3 r, A[- \8 W4 P6 r7 O6 k$ C) ^' z5 c! c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& q) o$ h/ @: e4 Q. N- ]set i7 W  M8 l2 B. e& J3 {" }+ H
( i + 1)

- \1 t5 r/ v# G" }]- \5 O# `% M, ^, m7 H
let credibility-i-j-l 0' E2 c* }" K% [1 i0 U
;;i
评价(jjl的评价)
$ @, L, `1 `* E6 i% M( H. R- ]let j 3- Q8 H! G( t8 J( b0 w; Z
let k 4
/ B5 _8 P$ i5 ~3 u* Pwhile[j < trade-record-one-len]1 v8 \1 w- ?, ]$ l7 S4 j
[' X( q3 i7 d* w
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
2 l) `$ {! T: R. t3 h- gset 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)
" X! W! l" ~- y4 tset j
( Q, a$ `+ l$ c( j + 1)

% B3 K6 [, y. v* I]
( \9 M, P! l) |! [0 s! k' C! |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 ))5 ~- x6 V) F8 u8 R0 }* j, I7 D
& L: O7 Q7 k! r# J# `  ~; w6 e* p  {
5 w; S, ?& m) P$ H1 I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" Q% F9 }: p( j) P& O, m
;;
及时更新il的评价质量的评价
- D  V7 O+ M$ h2 J6 fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# @5 t* P) R  r6 p! O+ X+ A
set l (l + 1)
# \% E9 c5 Q( W& r3 `]
+ y6 \6 M5 o: R7 X4 p" hend
( {, r9 O$ W* O2 l6 B
- z) s; f" O) @' O8 uto update-credibility-list
) z: a3 h  i' t/ @let i 0: P' y+ P3 J' Z
while[i < people]
& e+ ?1 s3 @3 F6 r. Y[  V$ w6 e& L$ d9 i0 P0 @) Z
let j 0
; l6 A, U' i4 X' B* }0 N& f4 nlet note 0$ Q$ L0 _1 ^9 j! x5 g! m, X1 O- R
let k 0
% I# _: T% r5 \6 R% R8 W;;
计作出过评价的邻居节点的数目
9 U3 m' ^/ P" Rwhile[j < people]+ S4 }3 ?- [! B5 U6 ]
[2 g& x3 a: Z' q' B+ L
if (item j( [credibility] of turtle (i + 1)) != -1)5 Z: J  W9 e- U4 a2 I
;;
判断是否给本turtle的评价质量做出过评价的节点0 c' y. z1 v$ E
[set note (note + item j ([credibility]of turtle (i + 1)))7 s' {( _7 H  l9 L0 @
;;*(exp (-(people - 2)))/(people - 2))]
& n" ^# e+ a! m' Q5 ?* g6 S* a# x
set k (k + 1)0 r( f3 ^) D7 A  E* K1 _
]% n+ F' c  p4 M' A" E6 }
set j (j + 1)
: Q! u( w" j0 m5 K3 ?; k0 Z  O]/ _5 s9 `8 L9 e7 Q) W
set note (note *(exp (- (1 / k)))/ k)
; s# X# m$ T4 l3 U# ?set credibility-list (replace-item i credibility-list note)6 F. D2 W, Y" Z* r* a7 j( J( _9 @  u
set i (i + 1)$ h$ W$ {9 r( F6 D7 X
]
# T# Q6 m- [- `: {  h: m" kend
2 X! O$ h7 P3 `8 X8 e7 k! e1 O/ D/ A) O+ H: r; h1 g
to update-global-reputation-list" V' d# J& b  `# B# e7 M% @
let j 03 G0 k( }0 \9 k) Q2 g4 a$ y
while[j < people]
( _2 O- v# ?6 p[& w" b: T% J7 u& X0 ^; Q
let new 0
, H& J) I/ ~+ }/ g$ Y3 t9 s;;
暂存新的一个全局声誉% M( }% ^& R9 z: T& a; e
let i 04 j1 S: e3 \0 O' ~' G
let sum-money 0: L, p& q$ q1 u% h  ^
let credibility-money 0' h: x  s/ b# o- q2 u) H1 V, }
while [i < people]# Y$ c+ x2 O6 ^. H' e
[
0 w& n# P6 h% y- ]set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- N" Z/ x) d) Z& l$ {3 _6 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! z; a( \# E' R: S6 z* V
set i (i + 1)/ b% i2 O; [" i
]
2 u7 v; k3 p4 l" Alet k 0
3 ?, \& j+ x# ]0 G+ ^8 ]. x4 W3 T, @let new1 0
0 j8 g2 ~( N6 j% r# Vwhile [k < people]2 }% {5 C+ ?: g9 h) _
[5 S3 t/ i- r3 |8 l, _8 T7 f! r1 I' j
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)9 n2 @5 Y$ E# K4 F
set k (k + 1)
* N2 @9 L" ^9 H! f" K5 L' {7 {]
# K* L+ C; ]6 G3 m8 H) ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 r' F, G' G2 A! r( T$ b- o6 x
set global-reputation-list (replace-item j global-reputation-list new)
4 [6 ?6 O: r5 H( K$ a& a: uset j (j + 1)
& y' s- c" W8 R4 H$ ~( A7 N% M- G" l$ p]) p0 A  V8 |$ S- Y" u1 i
end* f) r8 @+ M% G3 c* J! p

! {; }3 G* C9 R  m: |7 E# q; u
! X+ h4 d, y& Y
" j7 [, a4 S% m1 d- Q+ L3 Gto get-color
1 @/ B" T/ @4 y: h. j2 O* ]1 }' J  E: s6 N0 _6 y
set color blue
, x& R3 a9 G4 P+ |
end! h, W2 j7 @4 A9 q+ }
0 A6 D( f& X# w2 W+ a
to poll-class" U/ P& p& R7 [" @7 w1 F# U# O% [
end
! F( u3 [3 c6 ~6 V5 l3 c* B
1 a/ Y3 V  G3 t+ [to setup-plot12 s) s% b, m7 M0 b. l

$ _2 V9 T8 ~  l) T5 bset-current-plot "Trends-of-Local-reputation"
( }, G9 d4 g" @0 ~% E
6 y* J. e# P+ M4 I. x% D
set-plot-x-range 0 xmax
. B) i  t6 p: }9 P4 p5 j  F2 d3 a) R

& P, Y1 Q! M: J9 c' N% ]set-plot-y-range 0.0 ymax

: o1 i/ Q  m$ Nend
! d" X! Y  n; R2 b; D2 t5 l! Q8 Z9 k6 d
to setup-plot25 A0 f6 y' o( B4 L" E; O* F) j

& z+ x! |2 S! n# d! |0 G& Y: e9 Iset-current-plot "Trends-of-global-reputation"

& X* B7 _# u) d6 E$ [6 b
1 s( c6 e7 l, G8 O7 ^set-plot-x-range 0 xmax

6 L' L+ S: C  ]/ N# P$ o" w/ N( O6 w/ c* e6 g% _9 J0 X1 M& V
set-plot-y-range 0.0 ymax
$ E" w) @- c& u. J! s! m
end
: O/ {  R7 [! k6 B
. u0 J$ g3 S& G( H! f, Vto setup-plot3) X3 I. t& S% Z" Y$ @. m- t) d
7 @: _5 {: ^7 D
set-current-plot "Trends-of-credibility"

! {% d! L' J4 \- F4 d2 i- X6 t0 W1 g! ?- A, K
set-plot-x-range 0 xmax

# T! [' w; n( g) y' ~; L, A' E8 L' k  U
set-plot-y-range 0.0 ymax
3 s' w6 ?3 [1 }
end
( `( l( T! \. f, q! J8 Y, Q" R' u2 ?* r; ~( p
to do-plots
) ~" d  ]3 i* h# aset-current-plot "Trends-of-Local-reputation". I( ^& Y, T2 l" A2 F6 F( u
set-current-plot-pen "Honest service"
8 `! b4 B( L7 i) {end; Q5 k* j8 o3 m, J
6 V5 p5 P. E4 g1 t4 W, A5 i
[ 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.
- i, f9 \( k/ p6 Q# b9 W! D9 \
7 T. v/ y) G! W8 u5 g$ z: 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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