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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:
1 _; R; h; |, x/ f2 Kto do-business   [. O* N' K4 n) X7 n. j& f
rt random 360
0 D" f2 K! D( M6 R0 F fd 1
2 s5 U1 o* j& t9 ^+ M ifelse(other turtles-here != nobody)[5 g6 d+ i( _4 |! A& V* f! X2 |
   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.
& V  x" S1 y. E  v9 m" k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 I5 p, ]( q3 u/ W5 ^4 ~3 Q7 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ l: J* ^0 O* R  W( x   set [trade-record-one-len] of self length [trade-record-one] of self1 e/ L0 U" a! X. f4 i
   set trade-record-current( list (timer) (random money-upper-limit))  N5 m- ?6 m4 o3 r) W9 F4 d" s- y
4 J, r' G. }! `) D  G
问题的提示如下:
" T0 Y6 q9 M% L+ {7 L% o, h, V5 L. N# ^2 I2 ?
error while turtle 50 running OF in procedure DO-BUSINESS- |5 P/ Z3 w: p$ P
  called by procedure GO6 [: i0 @$ M0 T  N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 h; @# k. F- f! m2 m: Y
(halted running of go)
% a  s/ y1 o" O* x# O. ^2 S# Q7 i# ^+ ]4 V& r  d5 N5 u
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~~
4 ?( T9 L& c6 P0 n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
+ A- a2 }0 z% ?8 T: N% Rglobals[
; g7 ]6 ]5 u. [- Q# J& n5 txmax
/ X- Z' x1 W6 \$ I/ fymax) `" n5 ?2 t; t2 F
global-reputation-list
* z4 Z4 _, l# a/ d& R. X5 S$ `7 h+ d% q% T3 N  c
;;
每一个turtle的全局声誉都存在此LIST  ?/ c( r4 i  _4 T
credibility-list
' ^7 \  b9 k* F$ I& K$ M8 Y;;
每一个turtle的评价可信度9 M' o0 I6 q& ~' p6 r+ n
honest-service+ ~- A0 N& H9 S- x
unhonest-service
/ b6 y! k* U, v% v2 z. t' qoscillation5 r1 P- ]% _6 ?5 W
rand-dynamic
5 b, _$ g" [9 D6 I% {% N8 z]  i* `6 j1 |. E+ L6 {

, G& e& v% d% t- F% z- k) `3 {& jturtles-own[2 Z3 \) Z4 d) C3 m' D
trade-record-all
* {: Y9 n0 Z+ f$ S;;a list of lists,
trade-record-one组成- I* H+ d( [2 _+ n1 o. I
trade-record-one/ W8 G  n% D& C0 a' f! s$ g) _" W' q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; t' A/ D0 M$ l% n: s" o
  t# l0 G% J$ ]4 r' O;;[
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]]& W/ h# o+ r- {$ @) _* R7 U
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]
# s% d5 S7 m4 V# v+ {% rcredibility-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! j4 w* \# w* M3 R1 I
neighbor-total
6 I0 u* M0 l& y# V1 I4 p5 [;;
记录该turtle的邻居节点的数目! h! I; Y* ]# S
trade-time+ O9 U* I9 m+ e: e7 {' K% a! J
;;
当前发生交易的turtle的交易时间
6 K" J9 O# S8 h1 ]% Fappraise-give( e1 @( ?0 m. s4 H* z
;;
当前发生交易时给出的评价! ?. Y/ U( h# X$ E
appraise-receive7 v# a' a$ ~  z
;;
当前发生交易时收到的评价
7 Y6 V" l% t( [+ jappraise-time
4 l# L4 Z+ F; }1 M9 o+ h;;
当前发生交易时的评价时间3 I0 t/ L$ r7 ~$ C9 K1 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( X; r" |1 W9 e, N- l6 y# _! b, W  Ptrade-times-total3 L4 _$ }3 ^3 u' X0 e5 P- t
;;
与当前turtle的交易总次数; R$ {" S7 z! h% h
trade-money-total
( L2 f! m3 s0 O8 u;;
与当前turtle的交易总金额3 U) k4 `) c6 }" U* L, k% [8 g
local-reputation  l: J5 c  _5 M; L9 r/ D
global-reputation
3 n/ S: P) g6 u& Pcredibility8 v' ~7 x$ w! d7 D: |
;;
评价可信度,每次交易后都需要更新
5 _& S; h5 a' y; m6 j: ~5 D/ N" Mcredibility-all
- @  n1 q* x5 [! F;;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  V) p8 c4 B7 T6 |' S$ A
, y. K) W$ w+ L; @
;;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
8 t+ \9 u5 a6 q& \2 Bcredibility-one
$ U" E/ O' d8 j) ?" D;;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
/ Q+ d2 ?9 {& S$ mglobal-proportion5 m) m+ r+ _5 c' I- M/ I1 p
customer
& w% e1 z. W# f5 \$ qcustomer-no
! b: T( {& q$ U0 R; Ntrust-ok
( m: j5 T& v3 o+ _trade-record-one-len;;trade-record-one的长度7 q0 T# V% I' r& b5 R
]( t' J) E* v- J  j* L
  w1 U" J4 W, N) S  T
;;setup procedure
) _9 T: e# [/ d6 q, `. m  Q  g6 h% h* E
to setup
+ z. ~" D& G: M' V& [( r# b2 y2 M3 U9 @. `$ ~. R
ca

% B: N! u8 J0 W. e- f5 b: x4 I( A- L- @% i
initialize-settings

6 t9 M- B7 y! g$ s
" K7 q4 N* u! z/ W) X9 L+ Fcrt people [setup-turtles]

1 W" ?3 V8 h" ^4 B8 i% e. I# \. U, T/ K& x0 T8 }  }# ?: X
reset-timer

( v) w' Z3 k9 p# ]+ B( I
4 F7 ?8 O6 _6 |  h$ Spoll-class

. v9 a- S0 g  Y6 W7 Q8 W- D6 y* G+ s, J$ s3 }& ]5 \" q) X
setup-plots
/ e8 j" i, V% C! C/ f: ~. b7 `0 Z1 W

5 e! S1 j5 m/ _+ udo-plots
* _- A9 S. D0 w4 c7 ~
end' Q- D9 E- [. G  K$ V1 j

% z* N! T" d6 ^$ D( uto initialize-settings- `# {3 g* H5 g3 J& f
4 u: M1 e  E# ?( `  W( v+ E7 u6 S8 H4 Z
set global-reputation-list []

  V2 R8 W8 {7 x5 j& |) d0 S4 W4 J
1 A# T* b: r  p% z# b* A! \set credibility-list n-values people [0.5]
/ y; D* D# \7 B% q0 c
2 n7 g" _. {" y
set honest-service 0
. A$ h$ o+ V( c5 l+ s9 m
5 v/ f/ A. J5 o# Z% x, S
set unhonest-service 0

) x! k  L4 m2 f  h8 ?; r
& J! n. \5 |, L6 c1 Dset oscillation 0

# u3 ]% K" e# e% u- J$ V  U( q' m7 ~' D' u% d# q9 [# c
set rand-dynamic 0

, z; b6 G6 K5 ^6 Yend
: o0 f% K5 v  I  ?7 K' M! k
! U2 H" M: P' J# }7 ]to setup-turtles
5 J; n1 ^; I9 m+ j! bset shape "person"
% J  |- |2 S) J' usetxy random-xcor random-ycor! _& |' x. ]# X- l. G
set trade-record-one []# K1 z9 i4 ?/ X0 B/ F4 B
9 `0 _" j# _7 ~8 Z' `' f
set trade-record-all n-values people [(list (? + 1) 0 0)]
. V  _/ g, @6 B  @& K' T$ {

: c- Z: w5 H) z. Iset trade-record-current []
& D7 D9 L, a2 a1 G( v3 j7 X" g$ Dset credibility-receive []
. m$ S8 z! V/ M: Tset local-reputation 0.50 D/ k* w2 y6 A6 i7 t$ ~5 r. G. C
set neighbor-total 0
8 n8 d, B1 ^5 K1 a3 ^9 N3 yset trade-times-total 0
0 S3 T6 Y& W7 nset trade-money-total 05 A" b1 g/ u7 [( ?* W
set customer nobody
& G- B2 o/ e9 @. X! @set credibility-all n-values people [creat-credibility]$ a  k" [. Y7 q9 g4 U: M
set credibility n-values people [-1]
, o; K7 \1 r' {3 V$ O9 Z5 u2 Lget-color* y' L; w- V% k" r

1 {; M- q$ u- L  a1 zend. |. B/ A  W0 O- A. Q3 m. Y8 \+ l% d
& z- f, {1 M" [
to-report creat-credibility7 A, r( e2 R* i4 d( p% o. ~2 i
report n-values people [0.5]' e  i) v- b7 T0 B, {9 i) r* h0 x* ^
end
- ?3 i; A2 F. L0 {2 e; m. |0 r0 ]
to setup-plots
. o7 J* s; _. v6 D, P  W. G6 G( P2 S; K) r  U7 X
set xmax 30
) K4 G2 a+ @6 M5 y  j& A: Y) v

/ _" E- R) ?5 L4 Vset ymax 1.0

/ G+ d. ]* K6 y1 @- `/ i) y! R7 V' M. m% ^6 e
clear-all-plots
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5 z* a1 ~1 e) h% O. r# e4 d& A" x
setup-plot1

" D' w: A- H2 `8 \0 l
8 j% w+ C2 k. _, psetup-plot2

) J; E$ d0 f9 E; J9 q) P% h) C  `% _+ p$ ]" f% \+ e2 A" N5 [
setup-plot3

9 }) D+ V( M3 S& V9 H% A8 `; Wend
; J0 _6 J, f/ y% Q( Q$ P, d$ D+ b. F
1 n8 H- n& q) R7 C9 v# h( m* M;;run time procedures% X! k# }9 {* [' B1 a: z, T

) \2 O4 ^- V/ a5 d6 Ito go
! L4 r) k/ y5 u! e$ G0 u( |' a- a1 f
ask turtles [do-business]

3 G- o3 [% E6 j- |3 i6 l& ~end
2 E# U1 ^5 ^# m9 y5 }2 ]" H, O% t3 P9 [2 ]& P8 H
to do-business
* I( Q! W% X  B& m# J7 U3 K

- p+ [0 e$ X5 C7 ~) i
7 g6 O% h; a# Mrt random 360
1 H# A; O6 R" c5 U3 r' T9 [
6 x% B* ?# p9 k  Y
fd 1
) M5 V& r8 x1 l( \! ~

* M, R0 e* T9 {+ W1 n5 Hifelse(other turtles-here != nobody)[

; a! S* V2 f* S1 I! s" g" t6 P- x, W' G: I8 H
set customer one-of other turtles-here

8 W. O: o5 H- G1 ]) U
; p+ [3 o6 J) f. L! k;; set [customer] of customer myself
2 t5 c- N0 M+ M3 r; T5 ]" ?

# ~7 D2 Q3 o6 p: H' A6 zset [trade-record-one] of self item (([who] of customer) - 1)
6 n7 ^0 l. s* T5 K' r[trade-record-all]of self
: g4 z2 {5 E$ q5 H  M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& w( O+ ?( E. Z
2 W3 Z. K0 r' G) M: Q) Jset [trade-record-one] of customer item (([who] of self) - 1)% h9 i, J1 h* v5 |; r
[trade-record-all]of customer

# O# `4 r1 w0 @. ~4 `3 C
3 E) r3 a. j) ^9 E3 _9 q( }set [trade-record-one-len] of self length [trade-record-one] of self

6 q8 A8 ^6 {5 ?+ g9 p. ^
* q8 k. B  F+ W$ D  D3 d3 aset trade-record-current( list (timer) (random money-upper-limit))
7 I7 s& r/ M; y2 Y  I) G
# h. e! m) M' O3 W
ask self [do-trust]
& B) T( x: m- O- X;;
先求ij的信任度8 S9 L/ v( l7 C3 F$ [) y
; z  u, ]8 ]* ?
if ([trust-ok] of self)) ~! O  K3 K; A( z. I+ V: P
;;
根据ij的信任度来决定是否与j进行交易[! Z) h2 }$ @$ M. N0 f. L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. L, p' Z; g: g
% [* c0 _# u. A6 W" k: D
[
0 C9 R& p- s- j" b9 s8 U
1 M% [/ X% _6 d# b% I
do-trade
. C! t$ M; S" T+ m
8 X$ a5 N- W/ R6 {, a4 q) V
update-credibility-ijl

1 o5 C, J0 E, d8 x8 @& p5 M# m" j) q  c# v4 G
update-credibility-list
% L% }" @3 y8 w2 X* s

5 L5 D8 b8 ?; [: h6 G/ v
+ h( S4 p& }8 \update-global-reputation-list

2 Z# Q, A% `; r3 A0 Y$ i1 b8 E) f) f( c% f- o( Y$ p
poll-class
! G: M# w% I7 Y' ]
, N* E8 L8 \3 `" L9 R& `0 K
get-color

4 e3 Q, m' B9 m
  X4 Z1 Q% o$ K) W5 `]]8 b6 ^) `' U: Z- z

$ c& i" }3 c: @# Q1 i  i# K;;
如果所得的信任度满足条件,则进行交易
7 ?  X  b/ |$ s8 u& u' K. ?: Q8 i7 g! d- ]  H/ k# A0 q7 `) b
[

6 I; a# D5 Q+ A9 l* I7 c3 z7 u( j: j: A+ g, K" X
rt random 360
+ l1 w0 C" b( h

2 E) k! x" S; d4 Yfd 1
$ e, `8 k$ ?, p7 p1 N3 p" k

, Q/ ^, H: ^* f/ n* p. P]
* T9 O& M! F" j- ]# z2 l
0 [3 u* g( Q* k- |4 b
end
7 u5 w, [. m2 L
4 k( ]6 x. i" L) f  i! F
to do-trust 8 U" l7 A' r! r$ O
set trust-ok False
& Q, t8 j, U/ D3 Q
2 E* F% X9 c& e  O

6 n8 k- T7 I7 c# J8 U$ ilet max-trade-times 0" j, j. u/ s4 w0 f4 {6 K8 F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 ^- }2 m0 W+ P# X4 blet max-trade-money 02 H& u/ @7 m' ~/ v, d% Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) F; _! S# R( {4 W* r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# y& ^6 g( z% X% r$ v5 s+ ]5 l& T) d
( i# r6 K+ ?% B0 W! d8 T4 D$ Z

* l8 d" L1 I% B% d. S6 Zget-global-proportion. Q2 b! J8 h$ B( ]* F) ?' y
let trust-value3 E: e6 f* H" k5 M( m  j  }
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)

. D) G. T; D- B$ ~if(trust-value > trade-trust-value)
8 m/ O- j( }+ y( j9 e/ \[set trust-ok true]) I* C- v) V0 e8 H( k% y; q5 V0 O
end8 x0 M( c' K8 Z6 h  }+ t" \8 V% J: Z

3 i3 J( k  ^4 _/ h0 Oto get-global-proportion
+ a7 F1 w1 A+ oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 |: G; {$ E8 F, t% E. F" U# x
[set global-proportion 0]
4 F3 _- V- \, j[let i 0
5 t# F  s; }" Q6 R; Xlet sum-money 0" d  [) R( m7 p
while[ i < people]
! ?2 W4 n# ?& C4 q6 M9 D$ g[. @) ^& f5 F5 ]% Y" l* }1 h
if( length (item i
7 o" g) y9 M2 _% E9 f+ v[trade-record-all] of customer) > 3 )
  R; l- ?/ j7 s3 O7 x1 ?6 W
[
& B$ h% J4 `2 ]  w  e4 bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 w/ Q) U; b& f: {]8 k% Q# l* C- {8 O7 d8 W/ i
]0 q& D0 f+ z- u2 Q: ]; o
let j 0& H  `0 P5 ~) C) o, f3 d) P
let note 0: s: M; f6 M/ R( ^2 p! X
while[ j < people]
/ W2 o) C7 d: r3 t! I# }0 e2 ^5 d" Y[
' P6 ?1 }  A6 {. f8 w1 T% M0 zif( length (item i9 `8 w, K/ z5 n& j; q
[trade-record-all] of customer) > 3 )
; h- b) K. B0 d( X  G0 V
[
: b. P# o* f7 j7 v. E5 p  b- z9 ?' hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& i5 E$ D; B+ W0 X2 N+ y* m3 i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( q; _* N- H( g  s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  Q7 W0 s8 v  Z
]6 x4 K+ V5 l' `
]
; G3 K; D" Q5 \. T" \% Oset global-proportion note
- G/ B: E. S# o, O. a. N]
: o# y" j" A4 G9 u# Q7 Send
: N# [' N7 R0 v, o) Z9 v
$ l  }7 S" e% x6 \8 a$ i) a  z! Jto do-trade- q/ S# y+ h; f2 R4 R7 ~& F
;;
这个过程实际上是给双方作出评价的过程
1 {! ^# G) R" K2 y( A7 E3 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* t( Q+ a- X9 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 j5 B3 s5 Y8 J0 n- Q! A. Qset trade-record-current lput(timer) trade-record-current
. N: R& J7 b: X( @2 F;;
评价时间
2 P% i4 q9 D3 W  F% q9 d2 @ask myself [8 A+ Y% s  J+ F
update-local-reputation
# I! G5 G! X7 u3 H* g  q: _0 Sset trade-record-current lput([local-reputation] of myself) trade-record-current7 ^7 ?. C9 Z3 l. x0 W( [
]
  j, H, Y, o- W: f+ w# cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* h' Z' D3 d9 z& n3 \- w
;;
将此次交易的记录加入到trade-record-one
& ]( t& {( @. p2 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* F' L+ D% K, ~8 R) H& J3 T( g
let note (item 2 trade-record-current )
/ R* J& M1 U' @& nset trade-record-current
0 l6 a! X! ], @  P' z; [7 V(replace-item 2 trade-record-current (item 3 trade-record-current))

( `( _! z# s  y- V3 Nset trade-record-current- W$ T& W! N& M1 W6 M' ]4 W; ~* L
(replace-item 3 trade-record-current note)/ M* J! H) p( \- k6 [" j

; Q- G3 _/ y$ M

/ B1 S( f( D9 h9 }ask customer [5 ]. i( s5 m/ O  Z
update-local-reputation9 I9 f: Z& Z; h: n2 z; l
set trade-record-current
! B; y7 t* O6 i( {8 L- ?$ D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; k* ?6 @# |7 v6 Z8 [  u- R
]) V3 D$ K4 \' w' A# g# [

0 J/ g3 A% J, H- Y8 g" H7 J

% r: |3 L( J6 e; eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  A6 A5 @  r( ~. |; g- t7 [

* R# ^% Y5 u6 D: f3 @; tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( g1 ]5 B" c# N) x1 E$ \;;
将此次交易的记录加入到customertrade-record-all
2 ]( e3 \; u& V1 Oend
- [" L, `/ E8 F( _
0 g6 h) `  |( c) |9 v5 M! l( _to update-local-reputation
6 t; [* V- H1 ]" ]& K$ E: E3 aset [trade-record-one-len] of myself length [trade-record-one] of myself# t4 r% s2 ]2 F8 r6 A. P
% q- E/ x8 f1 P* k/ h

& |( z; w4 I/ p: s;;if [trade-record-one-len] of myself > 3

: r' U% y/ U1 ]1 z3 b8 Lupdate-neighbor-total
! l& t  Y6 b, F9 a* ]5 V( f;;
更新邻居节点的数目,在此进行/ `( o( T- J& r
let i 3$ s0 E8 S. a4 B# m9 l' ~
let sum-time 0
2 ~+ c5 X( k, Twhile[i < [trade-record-one-len] of myself]! D1 O/ x( \1 u9 p
[
' O# ^9 L7 l9 B- r* r, |3 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 l& M$ i! L$ P; y1 M) f9 z0 Xset i
9 U. ~' `. |5 A2 n( i + 1)

3 x) U8 A/ G$ f]  n9 _+ Q1 h2 G8 |' c' n
let j 3
* M$ l6 F8 P1 Q/ X3 I* C+ c! @6 Ulet sum-money 0
7 u/ @3 [' ~) R9 d" I' [while[j < [trade-record-one-len] of myself]9 c: C+ C7 r7 w6 d+ e% H! y
[
* H; a( B+ C6 ]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)
! T1 T# [) z3 g! D$ gset j
" |  C2 J; Y3 W, n# o3 w* A( j + 1)
: H& M5 g" n# V, @  x
]  m1 g0 @3 ^) X% p* O$ |
let k 3
' z9 z1 M, E+ |: blet power 0; C7 z8 x! q& l. c- W. q% e
let local 0) H3 f/ L7 t# x$ p/ S% Q
while [k <[trade-record-one-len] of myself]. w5 ^  f. [) W. A$ v/ a: B
[
. l$ W" j& \! @3 e) Hset 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)
! |2 K( T6 e2 j/ Iset k (k + 1)
2 `* g' t" X+ w& M3 l]
0 `6 F. _. j3 `: J* G# aset [local-reputation] of myself (local)5 {! i9 L! g6 X) g- N
end9 G, V6 j2 \5 v, @$ I

* Z. w. T- g) e  ]9 i6 [" P" H+ Eto update-neighbor-total0 q- L  C4 z' o8 a/ {* [( A
, W+ e) k5 q. `% ]! s: s' }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' x+ h6 O$ a# e+ Y2 i3 A9 L  O9 R7 E6 ?1 |3 {
1 t6 t- L& b" r9 j) j
end4 D. u# P4 S+ L! A! ]: g/ J1 i

$ L/ Q; K* J% nto update-credibility-ijl
8 \" R5 O4 x5 `8 h+ F
3 c3 P, E- S8 Y+ ~# W* j;;
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。
- p0 Z, V" F! E: G8 R# z; ^let l 05 B8 G: A, a& `; i0 Z  c& C; B- L
while[ l < people ]$ G/ W9 I. l# g0 F/ a( A( Z4 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% c0 O4 N3 ^2 Y% S; C8 N
[0 L* |6 D4 |$ ]5 D. }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 b/ D  o+ Y. l+ ~
if (trade-record-one-j-l-len > 3), e3 H" x! ^2 F& @1 ~
[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* W, s8 L% y8 o9 P3 Y
let i 3
! v1 N. f1 [' E  x* q7 Nlet sum-time 0  b' E* e. e" K1 k- W) k0 O! ^/ p0 a% u
while[i < trade-record-one-len]
% f0 w2 f5 Z( [7 a! w0 V[
) V3 g5 Q" i6 r0 Z) H' s/ Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  x% L5 E& {( C& u% _% k
set i7 ^0 E8 J9 E& {' K' E3 t
( i + 1)

! B5 D- c) P5 Q3 ?! ~" ]]$ {2 N# ?$ v1 i# |" _1 b3 s0 ?
let credibility-i-j-l 0
6 a0 \/ `2 i" m/ G7 ]# T' Q% F;;i
评价(jjl的评价)
; U5 T( c' C8 P9 B7 I  Ulet j 37 V- t" Z3 u1 [0 ?; o4 Y
let k 41 Y, J, `& M6 `4 g* `
while[j < trade-record-one-len]
9 D4 n6 `8 N. l; i[7 ^( r& m9 y% d/ S4 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
+ p5 `0 \+ T  T  _# z9 {  Z6 }! q" Rset 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)
% p* t! k. `( M/ Hset j9 z9 O9 t( u( \/ s/ e, q! x' q
( j + 1)
) ]- f; J0 }, j5 C. o) _2 E
]
4 S; z/ O/ s2 V( O5 L5 r5 yset [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 ))) Z% J$ z9 [) \5 `7 `
4 `  K# K, G5 {( ]' n0 ]

: C8 Y) ]: a( E8 {! |1 glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 _9 w* `$ ]. q) O- N
;;
及时更新il的评价质量的评价
) b, j- J7 S4 V  ?1 s4 }, L* O# Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 s& T) m! l' ^9 g
set l (l + 1)
9 y& _8 t# Q4 }( j/ x]$ _4 w( W8 K' A6 `2 y  Y6 l) ^
end4 B3 f4 d" n5 e9 s2 Y

2 F5 Q& X5 E3 J3 o2 m2 Gto update-credibility-list
4 r/ V) f  z! Y$ Blet i 0# `+ k1 \4 C, }2 {$ Q0 w$ U1 x7 ^
while[i < people]. q3 l5 @: {  o- I: I; t8 z
[
5 x; o1 W- C6 O9 C7 G0 Slet j 0
: I" n2 O0 O1 K1 H7 F# X( ~let note 01 ]: a: P! p, {0 Y
let k 0, U8 I3 Y- p$ m8 v0 D
;;
计作出过评价的邻居节点的数目
9 k9 X% x% ?# g) S6 w1 Uwhile[j < people]/ [: I6 g& U/ E2 d, V
[4 V- X6 k8 l0 ?( M# X9 Z
if (item j( [credibility] of turtle (i + 1)) != -1)! _6 A! H" E& ]$ C; r) o
;;
判断是否给本turtle的评价质量做出过评价的节点
, K' _! P) G6 A' ^9 v" Q: ?5 L  H[set note (note + item j ([credibility]of turtle (i + 1)))
( P7 |# g0 u4 c! \2 k1 t% {;;*(exp (-(people - 2)))/(people - 2))]
; O' N: A$ D7 }) ^
set k (k + 1)
( M! f3 {- {# G) d]# Q9 V  M1 v* U1 o/ c& G# R4 g
set j (j + 1)% v; k( C9 k1 k$ z
]
# ^; m- a4 a) aset note (note *(exp (- (1 / k)))/ k)
+ g- r- Z2 R" Iset credibility-list (replace-item i credibility-list note)5 i) _& A5 M1 m2 H$ I& q
set i (i + 1)  u) _) Y5 V" Q$ [% H' s! y/ X
]5 ~9 G7 f! I# e/ z5 Y0 W
end
7 V) T1 i% o3 |1 ?& N& P; \
6 I. }! Z* U& ]to update-global-reputation-list5 U( y2 g) Y0 j2 Z- j
let j 0; i' ^6 s  }$ b% u. x8 D; ~
while[j < people]
% S$ U/ m0 }8 M# ?# U[
7 V7 t0 L* }5 l* `3 f0 U8 o! elet new 0
" |5 [* q$ }, {& K# {4 F- o;;
暂存新的一个全局声誉
( p& `9 j- z$ z6 J! Tlet i 0
! K/ q; E! Q* J' Q/ ulet sum-money 0
) U8 }5 Y1 A" U, S! ~0 Plet credibility-money 0
% \# b- \% Q% ~. N) E% [0 {/ v+ K+ S7 O8 twhile [i < people]% j9 ?+ U6 W, o. y5 e- E
[
6 X* a2 `6 A( s4 m1 I* X" f  Y2 Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 r: Z' o. p0 P1 l$ d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( l3 t$ X# t! Z
set i (i + 1)8 ?5 L; @. C1 J* n# r/ j
]9 s- T) k& Y; Y# \. V* T' T9 a
let k 04 l% @. f' B- o* a( \! }
let new1 0# b  v5 j1 R5 ^+ t' H, y' d
while [k < people]- o2 y9 e' U3 V8 k9 B
[" o' U; N/ ?* r
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)
4 J3 _) q; ^- E; oset k (k + 1)% n( k3 z) ]/ d, w4 v( C
]
) p% F9 ^" @. K  q$ vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) ^' |# J' H2 X+ E& W
set global-reputation-list (replace-item j global-reputation-list new)7 x5 M% e  ?$ L) `' Y: P
set j (j + 1): p  O" j' y+ N0 j: |9 r
], v& n7 F$ g4 \$ S3 g
end: U/ r' C" w: ^) Q: }2 n

" O# v1 X6 m. e* _3 h5 R; y
/ Y/ Q# b% F# N: ^/ z
& k1 S' `/ e: L! H( {" xto get-color
* x7 B" k5 M4 _: X7 k: n& D' M8 e3 s% f1 L7 Y
set color blue

' @1 Y- p8 d& h  o# ~+ z; V* Nend
8 g. n& W+ d( \! @1 X/ f3 e6 p+ H
: {3 W: T% ^4 w8 Hto poll-class& w0 {4 A2 P4 Z, Z, p" g/ H
end7 w# E/ x7 Z& {, ?0 z+ x. a7 h7 z

# D3 ?# ]; x0 n! E) S7 uto setup-plot18 a' Q4 m3 l; _/ S' L" Q5 n. b

# t; H  m; m9 O+ F0 {& V2 k" nset-current-plot "Trends-of-Local-reputation"
0 y5 k3 E4 Y7 s; ]: y8 a8 f
9 j4 O- u9 @0 j$ m2 Q
set-plot-x-range 0 xmax
' ]! m5 C+ v1 M

. p1 e/ T% F7 x$ T+ cset-plot-y-range 0.0 ymax

- S: p) m  ?  p: U! Z  m9 L, k: tend
7 i" m; ]' g8 c7 z( w' J+ n
3 {4 a" x' |( J  I: Y7 I1 vto setup-plot2
$ g( Y9 {+ y# o# F, M$ u9 m+ w
" j4 b% ~2 i& ]! K4 T" C  Q8 o# wset-current-plot "Trends-of-global-reputation"

. w6 X/ O8 e, ~( R
. ~+ O! @# d' x" Gset-plot-x-range 0 xmax
& x+ Q+ J+ |) \. s$ b  C  u% V) S
3 O4 Y  @# i' p; I1 P; C
set-plot-y-range 0.0 ymax

( @/ Q& v, l' b1 ~. ]: Fend. {% n" g# O2 z3 \) p+ A. b' B+ T

0 V, b: Q5 N5 h. k/ x, y" Bto setup-plot3" w2 \( q& t, P3 ?9 y! Z! d, a
) m) g( D3 d  K5 g! j* G( u! O) h$ y
set-current-plot "Trends-of-credibility"
& {/ p% }8 E7 L% b, s, {

. D4 E* S" {& q1 h9 c* m$ mset-plot-x-range 0 xmax

/ L2 ~0 ]  g/ _$ ^1 I2 q* a0 p1 b! Z" @
set-plot-y-range 0.0 ymax
4 v% ~' k* c/ n: X) A# [! R" ^
end- Q8 _0 S, I) y: G: p! K3 {; W' f
3 W. a  ^8 g7 C% f0 Q, w
to do-plots8 F; [4 {- J: \# \+ \* l
set-current-plot "Trends-of-Local-reputation"& I9 O3 Y5 {! ^. m
set-current-plot-pen "Honest service"3 B* k% |' [1 |
end
, |$ {" G. K0 s! \, z4 z4 g- }! ^5 v
[ 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.
( C, z, n! X# k$ O3 p4 s4 c9 Q$ H: q' L4 C+ z
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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