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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:
  b4 T) d3 `9 u! n; B- ?: m/ G: hto do-business
& q4 ~8 ]) K3 T" K rt random 360  r4 Z) B; O0 J& u
fd 1% d! w2 V: N' g: w4 G! K; D
ifelse(other turtles-here != nobody)[1 h6 d( A- ^# J8 f  X& @
   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.
3 B1 Z; z' Q: o! M  H. Q5 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 ?7 D; p. |) f' w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 W; g: E8 P6 B% O   set [trade-record-one-len] of self length [trade-record-one] of self5 D) r+ e" F. B( ^5 R, I* ]# C
   set trade-record-current( list (timer) (random money-upper-limit)). ?5 F5 e+ x* W! h* e2 s' z
7 |6 p& l  R' t+ i- s& i9 h3 e  U4 {
问题的提示如下:
; I+ \* d( l% C* a. Q2 G# x: O4 y; @$ o% @
error while turtle 50 running OF in procedure DO-BUSINESS
* d- s1 F  n8 l: G  called by procedure GO1 b# [2 r& o/ i+ o5 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, U) E! I9 A( `7 b& S! B
(halted running of go)
4 H0 h  t/ k4 ]4 C% ^' m$ c. Y2 J4 ]
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~~
7 C. U& }: W1 D. E7 U& k( r: z/ y6 L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
/ B! f8 D2 T# R! H: pglobals[
1 I5 l4 v, z; X# f$ B, U9 W9 L8 s8 g( q8 A9 pxmax4 p$ [0 {8 X3 I- b0 F# Z2 b$ l( M8 e
ymax
; ~! k  @2 i. ^9 C% uglobal-reputation-list% T6 Y; W- s2 S9 w0 W

5 R: Y' m; g0 e) I;;
每一个turtle的全局声誉都存在此LIST
' f0 X: [6 B+ v8 q0 B0 t" w' bcredibility-list1 b2 Z- \8 j3 |, ]5 c
;;
每一个turtle的评价可信度
3 O* w# A. d9 H% N( hhonest-service7 U9 E8 Y" z3 |4 l0 A0 H% s
unhonest-service
# O+ l  y1 A  b1 x2 Goscillation
. J6 _$ V! u2 R: V& N$ y& Qrand-dynamic2 w) z5 f1 D% F+ ]+ F+ A* r7 k
]1 B8 U" G8 O; M! j) X3 x
; E/ Z0 G4 _/ M- H" v3 j
turtles-own[
6 k5 I- d% |+ I4 y. p7 G& P. K4 \/ c1 Jtrade-record-all
- I) @8 z) f# O. M. V' _% D) p;;a list of lists,
trade-record-one组成
" M: f/ Y; `: C1 N8 |: Ktrade-record-one
* i+ ~" o) k4 e4 m$ V, a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ M. j/ K* `# c. z! l7 O; e
* y6 w) l2 t& b4 F! r; Z
;;[
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]]
# S6 s) n6 O) R2 k7 h2 Ytrade-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]0 U# j3 L* e/ `$ R
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 u4 ^. `3 |( H& bneighbor-total
; v. `& G+ G& ];;
记录该turtle的邻居节点的数目
+ s+ i; `& s: `. U3 |trade-time
/ L3 Y1 {! o- }! E: X;;
当前发生交易的turtle的交易时间
0 H7 f: e) u% z; wappraise-give
8 a  @# J# j2 N+ Q! _3 I;;
当前发生交易时给出的评价
9 }5 A5 p8 j. Pappraise-receive
, T: }2 w; K" R* o;;
当前发生交易时收到的评价1 F" a* }7 h3 {; E( I9 i
appraise-time( c) o% C# q" K! K
;;
当前发生交易时的评价时间
" P; W( o; I5 T7 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 V/ X) \, D( N* x4 O! Ftrade-times-total
/ `5 c  p2 x0 x* ^1 ^1 ]! S6 J;;
与当前turtle的交易总次数
9 j7 c, e4 {- }trade-money-total% d5 j3 v6 V# |0 R& Z( E9 W
;;
与当前turtle的交易总金额6 g0 `  c) m1 W$ u) |1 ~
local-reputation
8 t7 v3 s0 ?* f7 }! L, ~' C! sglobal-reputation
0 W5 A% G7 |+ H5 g, {  o: ?1 Ucredibility. |5 L$ w/ M2 q( d) b
;;
评价可信度,每次交易后都需要更新
9 E" r! e: m* z. ^) L0 z3 pcredibility-all
: e0 Y& _* X7 W) L! b: U; w;;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+ r( W9 ?# p+ w  `1 f& |
: s3 P$ Z/ J2 c' C0 ^7 {
;;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
# u. o  R9 M  F5 J+ ucredibility-one' q7 ^/ o% D+ g  L4 ~
;;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
, m: n: z- \; w$ L+ S- V: xglobal-proportion5 I8 [$ S! }9 ^" }$ z( |
customer
1 A. o8 b4 V  \customer-no* O5 h8 @4 }2 p
trust-ok' j- z4 ]* v9 b. y
trade-record-one-len;;trade-record-one的长度
5 V: ?2 D' t4 ]: E: ?: B]7 ]8 W9 N. Z* T$ ^

1 K& U& |" k& G0 B) i0 H, U;;setup procedure
8 `7 `6 q' f  A. S6 P% P5 F  y8 M8 D3 K# a6 H" n* F, S, d
to setup
0 E5 v9 P; W8 [8 S$ N+ H0 Q. }: ]9 e7 \( l2 _9 D" T! s
ca

/ ?8 o6 o- K/ d- `4 `- Q' ~+ ]% {$ b! I1 p1 J: {- O' W
initialize-settings

7 @9 p% Z8 n* h- z
" t- F+ T8 G3 ]' R0 Q' t) gcrt people [setup-turtles]

4 W# @- W" Q7 r  B/ n- Z: e2 y  h7 y6 d
reset-timer
  X9 G9 D  u) I! @9 c

! H+ w5 X2 D3 z" c0 b3 ^poll-class

% z* u5 w' l! B3 T" F# M+ l! ]9 \, M
5 ?5 x( P# D2 \* @* bsetup-plots

, I$ W, L* w/ x/ L+ s% a  R# U/ l& ^% q, h; @( ^/ A& Z( y
do-plots

( q) |, l3 t7 {0 _# n- X  fend) k1 ^! D0 E& W% g) r
. Y& h$ |% q0 k3 F* z
to initialize-settings
( I$ c6 [% t: z$ I
3 v& _7 h; O7 F$ A/ L9 q8 aset global-reputation-list []
. Z& s& H( G8 x4 c9 W! P

! u, ~/ _2 d+ @6 K1 Qset credibility-list n-values people [0.5]

& G  A) Y9 s& [2 D
2 l2 v. S6 F! s" p8 \set honest-service 0
& k( \  w1 N6 @  }! J8 Z8 _& ^

2 F( H: D5 @  \5 y  u" Iset unhonest-service 0
! L8 L' V+ `9 P$ v
4 i$ `2 N- ~# Q' m+ D
set oscillation 0
, W! m8 c8 T  O$ a
! Z0 F$ w3 W# g, @4 _) s
set rand-dynamic 0

5 k$ U7 J4 l3 r+ s# {end
) A+ z" a8 G$ v( x0 S& K$ e* g+ c, M
to setup-turtles
+ [  r, p, H' A: p9 Oset shape "person"
2 G" H# S% {, p5 t  Z* Hsetxy random-xcor random-ycor
& h# @9 x4 P. j3 yset trade-record-one []
# y4 }+ Q6 d2 \8 K" `/ H: D

& i' T& M" P% I! x& D) T. rset trade-record-all n-values people [(list (? + 1) 0 0)]
/ T& c2 E6 c0 M8 H

; g7 \* M1 t+ m/ S6 N! dset trade-record-current []0 ~& c6 [7 s$ v
set credibility-receive []
$ z; N% Q3 b- b  ~2 N% s" i8 W- yset local-reputation 0.5
9 j' |8 B  N" U3 J$ wset neighbor-total 05 E' w" m0 W9 I
set trade-times-total 09 k" o* [7 q2 I7 V
set trade-money-total 0/ L% I! l7 h  q1 z! s
set customer nobody$ B& W! I+ K6 N1 x; r: K
set credibility-all n-values people [creat-credibility]5 W9 V. H* b! w( t, f" ?2 D4 S
set credibility n-values people [-1]) _' {0 p# b7 I% `2 q
get-color$ X. `3 J5 e3 h* ]! e+ E+ s- h

1 v: j" z, D; ~% A1 n. v  ~0 I: ^end
4 t8 i* I; t! ?" w3 n
. r- d8 t# T  m, k9 p5 \; Oto-report creat-credibility+ [5 D, X! [: u$ g# c6 h9 F3 G4 N
report n-values people [0.5]% u, Y0 M; ?6 d, m" x4 l) e
end
  U0 v4 _$ S$ i
# h4 w7 [2 p7 Wto setup-plots9 T. g% _& w1 x
& a9 i/ S' _7 i" z' C! P5 u- _
set xmax 30
1 G$ J9 `$ l7 |8 Z( w5 I( }
( ^4 m# N! Q0 ~
set ymax 1.0
3 a$ R. [- Q3 h% i* z

6 ^# z- M3 v3 d# H& Y# sclear-all-plots
7 z9 c1 J8 o3 I$ V

; F4 X3 C  `5 rsetup-plot1

4 g& s9 `( m* p5 g! [; e$ X
5 N$ K+ u4 ?: s, {- L( l6 N$ W0 i) Y9 msetup-plot2

1 a7 }- F, B! X9 a( g/ t" p7 m' ~
setup-plot3
6 E: E+ E! S9 @: ]* S
end
5 h1 q4 D. `- N8 |/ t" `) j: O% @: }" F0 R9 Y7 j" `( {
;;run time procedures) s( s" R7 p9 [  ]& Z
7 l/ m" {3 f) |; f& r6 o
to go
( E( T2 i- ?8 B1 m  a3 F- W" z% J
ask turtles [do-business]
/ @' F( G9 r8 N6 ]
end$ z' D8 \( |9 j7 o

  b0 \& ?& v3 [% Jto do-business # X$ C% l# S6 G) l

) s8 V; B) x: W6 s; Y
7 I5 F5 @* ?7 s# t, [rt random 360

# F$ ?6 Y+ {8 p+ R$ k- O2 @( P! M" e! L8 o1 s6 b
fd 1

! s/ \: V7 T$ K; g
2 g( D+ u; M7 \9 ]5 J4 Mifelse(other turtles-here != nobody)[
# f9 F$ T: Z, h8 u! A
2 ]9 ]) c) Q+ w2 \2 W5 n0 \1 L
set customer one-of other turtles-here
' d- W' q& r. M5 S6 h

7 G4 W) I! O7 H/ O% f;; set [customer] of customer myself

6 X5 Y! L5 R& x* u! _
) ^0 A9 o% G3 g' f# Iset [trade-record-one] of self item (([who] of customer) - 1)
2 Y$ ?' \6 t+ k) I" H) S7 {[trade-record-all]of self8 x5 [5 a% g9 H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 [) ~' m1 A+ C% ^; |6 O& O
" s, A0 C  g( o% S2 b0 E6 R* M+ _& Lset [trade-record-one] of customer item (([who] of self) - 1)5 p" k' z1 O) O- y/ I' Q- Y( \
[trade-record-all]of customer
& L# N% [, l7 T

* w: O3 w& n& Y$ ?' Wset [trade-record-one-len] of self length [trade-record-one] of self

" B) R5 U* F2 v0 n3 d8 w' t5 w+ I8 G+ ?# z9 A
set trade-record-current( list (timer) (random money-upper-limit))

. g  {2 ?- G- W' c" |" O- _
% @7 r( b& Z. Z$ gask self [do-trust]* |0 ^+ P* b7 j, i8 A! @8 v
;;
先求ij的信任度& o0 v. h6 [- S, o# I
  s  X4 h7 }/ I: r6 Z
if ([trust-ok] of self)  m- I' W: c/ |1 v# t. l. P! ~$ L
;;
根据ij的信任度来决定是否与j进行交易[( q8 U& L2 }* _% P& Q6 ~9 S$ K* c# m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 B! y( P) f2 W9 J2 ]$ \# I6 C2 ~+ F0 k3 K( J6 ?( W/ i
[
8 Q4 @  R# P3 `7 \4 G
8 _  N& \- w8 c5 ^# B
do-trade

  }$ j! i5 \, f+ ?1 f* L" T, [5 y* s: }! o9 w8 e! Y6 |
update-credibility-ijl

1 ~, g! E( N" I+ t2 E
7 U9 E* V* p8 r" K& |, wupdate-credibility-list
# H# M8 C1 ]) {# V9 u

2 e+ T" ~* W9 {; T( p8 v
, U8 \2 T6 B* t) }; o4 Z6 F2 Y2 Uupdate-global-reputation-list

/ E# r- ]& p: p! x; X0 M0 B4 P8 _, I4 R- b; `
poll-class
) B# d' f( Y$ S2 o4 _" \+ V

: b2 E2 K4 S* I* tget-color
' h$ a: V: s$ I' S" |4 T
: r! C% K. ]2 P6 {0 ^4 p
]]
% W5 A- t4 V0 c; t6 l2 X
8 `# t# S' z/ Q3 M* G7 z- Y( h;;
如果所得的信任度满足条件,则进行交易' m) P9 B* |: h5 n
% Z2 x; v( P6 w4 ?( o
[

1 \+ p1 y8 L) u; a0 x# H/ a1 N& }
# i9 J: F1 ~) [7 Trt random 360
- P9 Z) s; D7 H9 H- c

4 G; ]6 p9 N4 ~( Yfd 1
' u/ G$ s8 o- S" s! }

" A, s/ \) j, J& ^]
$ x7 w% o/ b, m" A9 j
( U8 w: w; F% {. m! s
end

2 r, ^8 m  |% m1 _# w% X6 \  p
to do-trust
$ i* N1 J  I3 ?) ^set trust-ok False# p( h- J( o5 o: Z7 g; R
6 Z) h- x( |( S/ o2 k1 \

, K7 ~$ J& B4 ]+ p) klet max-trade-times 0
- b$ E; o* t+ B7 oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. J9 ]# d/ u0 N" B4 A9 l
let max-trade-money 0
4 L8 U$ b. E3 d  I) rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' q" g' x7 ?( P+ {& f7 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 H+ b; z: U; {, j

6 R& ^5 L9 ^* ~; F

6 C5 _; u/ X6 l1 p5 tget-global-proportion
( L, O2 c3 k0 X, ilet trust-value% K! X$ N. Q) s- C# e
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 f/ J5 P  `. G7 B: i' b
if(trust-value > trade-trust-value)
: C, d0 x8 M4 q6 {3 i[set trust-ok true]
3 T+ y( B1 B# H/ f  k# r# iend
& ?/ T' B9 ?" h6 `2 n6 V8 x. u
: ^) p/ i( V3 A# B0 k# o) {to get-global-proportion
0 L5 U. B4 U% n. A, B$ i: K8 vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), v) q7 N" h$ {" j
[set global-proportion 0]$ p6 C) I2 m/ s  C# g  i
[let i 0+ j8 o4 @# P$ M6 l$ L9 m3 N7 _
let sum-money 0# D- R0 l1 X! K2 `) i. U' S
while[ i < people]! I/ S: C$ n7 x  t, w5 d. |
[
4 }: g" f4 \- V$ F- P8 jif( length (item i
; R3 h) J5 {7 S[trade-record-all] of customer) > 3 )

+ N& Z: v$ s, @[. r: S* z, ?) O& @/ q6 v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* O0 |7 d5 o/ N: H2 j! ?$ o]
' n5 A8 p+ `, T" X# a$ N]
8 v9 l& Y- O' [" @1 ?8 G2 _$ Z% vlet j 0
  g, s/ U$ Z& `& F6 g! Ylet note 0
" Z! e9 A7 M8 Swhile[ j < people]6 y5 c) m5 {7 i( ^; }8 {+ [
[, r/ V, X, m! |# n. w& n6 Q
if( length (item i. y) @7 r, z. l! l
[trade-record-all] of customer) > 3 )

+ v" }  H, v. ]) m5 _[% R$ V: D  L, t8 Q! J5 T+ M& v# p& Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. k8 w# `5 `/ ~0 A6 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 y1 U4 U5 D- H7 {( T* y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 H- u8 ]0 A* s* {' T  |2 S. c]; H& R' h7 ^" n6 W. M3 Y2 H1 F# b
]
2 K$ l! ]/ F9 o  o# H2 P8 y' U' Nset global-proportion note: J5 I7 P& d) k& l' W1 w
]; m6 d% [6 |6 u. K4 {% c
end
6 b7 Q: o2 `) M1 Y! L
' g/ ?- b% r" d. S0 A/ E6 F$ `+ Mto do-trade; m0 ]; O! J6 {0 q) g, u# o3 o) y2 U
;;
这个过程实际上是给双方作出评价的过程! F  g# r0 N6 f3 y1 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 Z7 i$ y5 {3 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: z' e  W, k' z% w/ mset trade-record-current lput(timer) trade-record-current
2 _; k" U" p( W;;
评价时间/ F% a% \/ [& A" l0 c/ K8 w6 v
ask myself [
! z7 H! |5 L/ |% H& kupdate-local-reputation% X, v5 E5 h0 R9 [) V9 f
set trade-record-current lput([local-reputation] of myself) trade-record-current* {, g1 h* U* w0 F0 K! `1 \- Y
]
( ^2 {0 n+ k- f, _0 [' Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# W7 X( s# H$ {;;
将此次交易的记录加入到trade-record-one/ r1 |; b5 @( u0 [0 f+ U: g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# _/ d- r( _, i; U, m4 mlet note (item 2 trade-record-current )
) p+ ~# i7 o0 S( p& T' Hset trade-record-current
; c# ]+ X8 y* X: G" m(replace-item 2 trade-record-current (item 3 trade-record-current))
! l/ @8 m6 u2 D* a
set trade-record-current9 k$ e( z/ J) L7 m/ x
(replace-item 3 trade-record-current note)4 P" m/ p7 S4 m' |. H5 r% ]1 Z$ r

0 m2 L! H2 i7 ?8 p. K, P
5 P! |) u. B( S; C( h8 ?
ask customer [5 z3 n' }) U% d; e* V/ I' U
update-local-reputation
: ~, M- D( k) k( X+ A/ ^' b- hset trade-record-current
7 y# Q8 R' G$ c* H" ~! w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 `0 b- o+ ?1 W% C, X, []
4 l7 M, H6 W2 ^6 g& r; t  v( F3 x+ B' o

) a$ E# ]* [6 f1 I& J7 _( S; z- yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( J3 {3 X" A- Q* u! n0 u. F) W

, x# r( v1 U; qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 Z# D; [, T( s8 D- ^& W- r, d/ }' _5 _2 K;;
将此次交易的记录加入到customertrade-record-all
* i4 R+ o9 n- |9 Z: Tend7 v  P8 k! M! z/ J$ e, j

( |1 n6 a  y; `+ V* s. Gto update-local-reputation
' E9 e1 {0 ]" ^: Y8 \set [trade-record-one-len] of myself length [trade-record-one] of myself2 v1 k- I( s3 @1 e# a" E8 \+ D

# f- G9 I& x* Q4 Q+ |
/ g# u  T7 i- d9 p4 z0 B;;if [trade-record-one-len] of myself > 3
* w1 ]( [1 V( Y" e# z& U
update-neighbor-total" D% J( o9 H: v1 `
;;
更新邻居节点的数目,在此进行
- k7 A$ B- B: r# d, Wlet i 3/ f, i& M, N8 h2 @! Z, S
let sum-time 02 I  h. f1 S* D# C
while[i < [trade-record-one-len] of myself]' E6 l- H9 P) |  @% B
[% x5 D; c( }- z  i) i: H5 @: M+ |( c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 a" l2 z" g) ~) A3 Fset i
: P$ A: p. O, z+ f# t5 X7 x. ]% U( i + 1)

$ ^8 c9 ?: A4 ~$ ~8 \! F]
, v" Q9 I+ m3 ?let j 38 {/ I6 c, }4 u! @
let sum-money 00 J7 M8 u+ u# K
while[j < [trade-record-one-len] of myself]6 y3 N( Z2 R, V# d4 c
[2 B3 P4 o5 m* A' T- s
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)
$ ]/ d4 S" H0 ?: a% X! ~set j0 j, f) r* `. @& y- s! B2 R
( j + 1)

+ A4 ]- N6 Y; S  D5 ?+ c]& Y" h8 r5 E& Q8 _! K
let k 38 ~( a) y& b1 e1 F4 B
let power 0* k% B/ P6 H; C! H! ?' i
let local 0' G- f2 e+ x! F' k! n; d
while [k <[trade-record-one-len] of myself]
9 v1 V* y8 \0 l. R' Y2 t[
0 B5 M9 z% [3 e" d+ V- oset 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) 9 m& w) t$ S0 m, K3 ~! \7 u
set k (k + 1)+ r" G, V3 T) I* D; F( J2 {
]
' a; F% @0 m  kset [local-reputation] of myself (local); O0 H! z/ d8 s1 `( C% T  L
end# {6 S" u( B: o1 U2 v- ?

7 l* A1 E3 ^  `to update-neighbor-total% M' W% c4 H4 P- }* U0 p7 x

( r" C8 L4 d3 g5 H5 m! Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: c4 u* c( e$ ~; f$ s) x8 ^
' R0 i0 W' _3 N3 e( F+ D( N

5 g4 j9 e6 _' {. N7 o6 g8 B4 Pend5 h" [$ `9 m# F6 s5 Y% z& h% b5 B
4 @: q) g) B2 F4 y9 P
to update-credibility-ijl / r  P3 r: `6 s& T- T

- U' j! N9 w. n;;
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。. ~& V# m7 u: ^( W- w9 u
let l 03 }% `8 }. L1 P6 s
while[ l < people ]
' l& d, \3 _6 P6 b0 f( n; I;;
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* l+ Z2 Z  b* |5 A
[7 [+ D, J* V8 d  p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% c4 ]0 Y" o  y9 d" M8 e# G
if (trade-record-one-j-l-len > 3)
6 p( Y7 v! \* M8 W0 q[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-one1 a3 m$ w. ^1 R: |% o
let i 3& G+ m6 K7 s4 A0 N' s1 G0 v7 K
let sum-time 0
! l8 s* d' W9 q& twhile[i < trade-record-one-len]
' d. r5 |9 S0 K' [+ |' t3 l% F$ B[
! F/ x9 J" J4 w5 s9 dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( a! T2 p0 M' T# `3 b7 uset i
4 N: V; D$ A" a/ e* Q4 }" q3 Y( i + 1)

0 B) @; m5 y* q$ B0 w1 o]9 B# K2 }3 o6 u4 o
let credibility-i-j-l 0
$ [9 A2 b/ k& g! k;;i
评价(jjl的评价)
: X$ C: e# P" U: z2 z; Y; clet j 30 O% G+ ]( W0 |2 Q. c; t- k2 U
let k 44 q' ?: @  {8 r
while[j < trade-record-one-len]$ A) X( V2 h5 f: p* i3 i4 O# D, T
[4 a' z- X2 }6 x, R# g1 u
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
5 X4 s$ V0 K& K. m7 Aset 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)8 L/ Z. K& Z- [
set j- e1 W% i4 _! R- J
( j + 1)
; \: G8 Q8 v5 C2 b1 A
]
$ l+ X* H' w0 c" v& L: }6 Bset [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 ))7 g: ~/ ?. p. N( ?8 R

0 c6 S1 U- a  E$ [2 h

, i1 A7 h; \. W# c2 {let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& R! q9 ~1 D# y+ K) \
;;
及时更新il的评价质量的评价6 h9 ~* k& U* @% r! [$ P/ ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 {, k1 w, [5 D2 |5 N5 ?8 Fset l (l + 1); }0 `$ j6 E$ Q4 k) T( t
]( m+ `- u  R* {1 v
end9 a0 M4 N6 r. \1 f* M: x

0 G: e$ \% J) l# y3 }( {% ?to update-credibility-list$ Y; ]% m, E7 F' M- P+ g" ]) ?9 o
let i 0
  I# ?" B! ~5 B6 P0 K! Owhile[i < people]
# A1 g4 |0 m% ?+ W3 ?, _[  L* _' g. I, b1 z
let j 01 N; B4 v0 Z) J/ O* |
let note 0
3 _5 ]5 A. ]5 X$ V  X7 Elet k 03 u# B. }. z6 `) ]5 z
;;
计作出过评价的邻居节点的数目7 y! O3 R' h* K' K4 i/ H
while[j < people]
7 p7 [1 f% r5 q6 E[7 e" D) |1 B# o# Z
if (item j( [credibility] of turtle (i + 1)) != -1)1 Q4 d7 E; V0 \; u
;;
判断是否给本turtle的评价质量做出过评价的节点
: P# J1 W3 P1 P; `[set note (note + item j ([credibility]of turtle (i + 1)))& d5 Q6 r& |4 N/ t9 a$ Z
;;*(exp (-(people - 2)))/(people - 2))]
: H5 ^# t2 P& ?1 k( I$ m" l4 O
set k (k + 1)- i6 w5 L) \4 s. a- w1 s
]* N$ H) m6 R* k( S, d6 O0 r) n
set j (j + 1)7 C9 [7 B6 P# x5 {# k
]
7 r8 m9 u; v8 x( f2 Sset note (note *(exp (- (1 / k)))/ k)1 b* _* \# ~8 Q
set credibility-list (replace-item i credibility-list note)
2 t+ v; O- w) |: z% Kset i (i + 1)  ^8 j" m6 S, S4 y6 E
]# b0 p$ I& u; Y: s: \6 Z
end( h- o* K, V5 r5 D/ V
. V$ }' ~  U' n3 ^0 i4 r
to update-global-reputation-list, r8 k5 \: Q3 D. H  c
let j 0
$ Q: a. H  K; R3 @while[j < people]
& O: G- F& i/ B[9 ?  U/ {+ G( ^- l: R! y
let new 0! K& D" @; K2 A
;;
暂存新的一个全局声誉9 S% r- X. K  A+ [2 z9 ^
let i 0
6 J/ c2 m6 _; H: U( y2 R) Xlet sum-money 0
2 N/ o& v, N$ A) K3 Y& a6 Alet credibility-money 0, L3 W) |+ ]7 |6 i$ ]1 p- u# Q# o
while [i < people]
5 K+ K0 D" L( c* ^% E  @[2 ]0 m5 \7 W1 n1 [5 V  W2 o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ g1 l$ L1 N4 t' |7 Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 a+ \! d  E; @' ]* r* Jset i (i + 1)+ J3 K. q1 A: |5 G
]
* e% J* X0 J5 u3 E5 ]. T. K5 f3 dlet k 0% R) q& i) i2 D. h
let new1 08 A2 M% _  i2 M9 L
while [k < people]
# v6 O+ m3 V  f; v- H[7 ?( y: b, y4 T' y7 I; u3 x
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)5 Q" a8 {9 G7 g- b$ e
set k (k + 1)
8 F5 l6 i3 F1 g+ X  {]
) ?) B* K' C5 W  O" a( q3 pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- B1 R5 V! R# g/ G% jset global-reputation-list (replace-item j global-reputation-list new)1 o$ R, ~  ^* P3 z7 ~3 `
set j (j + 1)" H4 k+ q3 _7 j
]
) W' V5 A& k7 {0 Rend
0 {9 h  q1 P" B1 x6 _2 m% X
# W7 m8 w& T! e1 w( O; i$ ^% |. b3 f
8 L2 e. T$ ]9 N: r3 g
to get-color3 j2 T& K( r$ D, \/ ]2 x

# `- Q. J7 m+ k9 Z' _set color blue
; f, O2 {" H& M
end
5 i2 J" K$ T, b+ \0 N' C
2 Z8 W: a9 n; ]- Lto poll-class
( M% D; e' ?* @8 A/ q' Send5 P. ^% e& q3 T7 s4 l
: t# v- X  _3 L/ Q
to setup-plot1: x4 Q( Z' q0 M6 o
4 n! X2 A- |3 J4 Z
set-current-plot "Trends-of-Local-reputation"
) o; ^9 E: V- h3 R) D& D- W
. C( s) {) x' p
set-plot-x-range 0 xmax
! d% `) V7 F# C/ i/ n8 C) k
# C' }* L- l' z1 G1 G  K' e; }
set-plot-y-range 0.0 ymax

8 c  P) }* l" W+ P* r; @2 V6 lend: H. [) K/ @8 a5 E6 H3 v
8 @7 E* B) ]5 D" ?8 J; J$ D5 J
to setup-plot2
0 W( d3 p, ]! H: T! x" a) V9 E% Z' G- \# K
set-current-plot "Trends-of-global-reputation"
# F9 S7 N+ X0 Z( J* {+ ~# U
4 {* D. N* H5 l* g7 D1 K& \( @
set-plot-x-range 0 xmax

" l+ e2 C+ v; R, R1 H1 ]9 {3 p% O4 |7 l" w' |
set-plot-y-range 0.0 ymax
. W4 j1 J( y0 V5 k2 y
end
7 f. m8 _1 c2 V/ y- G
" y& E# g# {) ?+ }to setup-plot3, a0 s& N6 m; o

" z* K$ M+ M( D+ {  c% {set-current-plot "Trends-of-credibility"

  K5 b- I( I5 Z6 ?: a' e, _; j. M5 }7 d2 x+ z& X- g$ g- o
set-plot-x-range 0 xmax

7 X. R) D3 Q+ Z$ ~
! @1 l" O3 N/ ^7 l2 F" _" p# rset-plot-y-range 0.0 ymax
$ S1 l( s: u) G) z
end
5 X: K+ G6 u) p7 V
# G+ C: L6 S: Sto do-plots
) D- f; |5 e' h& B$ Y6 ^% ~set-current-plot "Trends-of-Local-reputation"& O3 u) p$ G' t1 K4 u, f
set-current-plot-pen "Honest service"" u. }# ^/ O+ ~1 d* z
end
" R2 l6 E/ g6 {4 _4 J) D5 F. C- Z1 f' i* v: Q
[ 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.
2 w/ B, m# Q* f) |9 v
# R8 K$ k/ Q2 j3 j2 L! y" t9 `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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