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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:; k' j' c2 ?" m# R
to do-business
0 K0 e* e1 P% G7 L1 F1 G8 m6 U( f2 P0 f rt random 360
; I3 Q6 J2 h" {- R fd 1. u1 F7 H2 j/ b9 e0 e) L* `0 x6 O
ifelse(other turtles-here != nobody)[
4 }+ s  m8 |/ e# d5 e) U   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.6 L( m7 P5 d  v7 x( y& z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 L1 }) m; w# B6 r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% {: k0 T3 Q% ^) S4 i  T
   set [trade-record-one-len] of self length [trade-record-one] of self4 z3 ^/ \1 U- g
   set trade-record-current( list (timer) (random money-upper-limit))
' d  l8 N2 S& a2 K4 e; L0 \8 o8 g8 v& P' y
问题的提示如下:( i6 P' ~3 B6 }- {6 {4 t

$ `  x! _2 u- L; p7 cerror while turtle 50 running OF in procedure DO-BUSINESS% E, y7 ^; r5 @7 m% f/ j1 Y
  called by procedure GO
0 t2 m# ~% v: NOF expected input to be a turtle agentset or turtle but got NOBODY instead.) C2 k6 F; z) A7 G/ N5 _
(halted running of go)! _0 }1 `5 q6 H. @0 `

  ?  }' ]; n3 c, x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 h; I+ A9 _+ I5 Q6 ]4 y  i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% \4 o1 t( l4 T7 Q- h6 W# l( c. [
globals[) C5 c0 {/ b& Z# _
xmax
* c4 F. W! i$ ?/ Z- S/ lymax; ]3 S/ g( k1 W7 N& W, p
global-reputation-list. o$ _: E! S" \2 x. @: C6 W
* K8 \" F9 F4 m  F' w& ~5 x6 C' v
;;
每一个turtle的全局声誉都存在此LIST& \$ s/ z4 |) m' ~: `" d/ w
credibility-list7 e; V$ T' h. v
;;
每一个turtle的评价可信度- A& {7 F8 ~' }8 J# A# K" k
honest-service3 s4 O7 ~: m9 G1 }$ r8 d  m% R9 p1 w
unhonest-service
8 v: \# t  \. ?7 _oscillation
5 d) s. x6 M" s1 O7 n+ \rand-dynamic1 g4 a  b8 I) g4 j/ ?# q" f
]  V# r  f3 e- c2 `' O* E8 C4 x

2 v( J8 I! E8 R1 Qturtles-own[
2 f- k0 p% l4 u; u+ ztrade-record-all9 D6 O1 Y. [1 h/ E8 }# U
;;a list of lists,
trade-record-one组成
+ h; V4 H" M; N, m: a& _( n5 f6 @trade-record-one
7 y( A# p( f$ S" R;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 r) f9 V9 H! S/ R6 Z6 r; G2 g" |, `4 j  h3 l) a+ p& v
;;[
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]]8 B# j8 e5 N( y9 p% d0 e2 N' [3 x
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]
% m# B$ \6 `1 a0 {: tcredibility-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. A8 G1 |3 F4 j7 d
neighbor-total
0 R1 r, ?  W5 |7 j8 f/ w;;
记录该turtle的邻居节点的数目
; J2 P" v5 L8 [trade-time
8 U: Z3 H& a  A7 g7 ?$ k1 w;;
当前发生交易的turtle的交易时间
- n! v) n! C& _3 q9 }# R! y" xappraise-give
- C/ |: `$ w4 a/ F; O7 l: I- @;;
当前发生交易时给出的评价, J  c; g/ ~* B: N" {$ o
appraise-receive
% N% l3 u/ S" ]1 ~+ Z# e* l;;
当前发生交易时收到的评价0 G$ G) w9 d( B. R7 l+ i
appraise-time8 q# k7 u' Z) `% R! M' Q' I
;;
当前发生交易时的评价时间4 V* o6 Q9 D  h  p# r) d* H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! f: N1 j3 R4 k; V( ^
trade-times-total
/ p' q3 K& y+ W3 b;;
与当前turtle的交易总次数2 E% {! l! O) v, A- [
trade-money-total" D3 @8 o6 X8 E, R" O. v
;;
与当前turtle的交易总金额
6 S# J. Z3 @  plocal-reputation" o1 [$ R" C: ?
global-reputation: t1 a( k* S9 ~2 }) B
credibility5 [- p! i& q3 z9 a
;;
评价可信度,每次交易后都需要更新3 O$ E& Y, C5 X0 Q8 k" x8 X+ b
credibility-all
5 W$ |/ V, P9 y+ @% k% a;;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
+ P$ y3 d4 A5 ^& r5 l
* A4 B, Y) P( i9 x5 y$ v: H. h;;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
& K9 s) L) F$ \. Q7 i+ hcredibility-one
6 j3 m  M# m* y9 ~; s1 h) O;;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- W3 T5 C# D0 J
global-proportion- h* B( R5 ]; |3 b8 X
customer
' n+ ]7 O4 \2 s9 L- B8 K3 M% |customer-no
. l# Y; O$ `; Q: T4 Dtrust-ok; P& x9 Y$ P" F1 r5 V( X9 [
trade-record-one-len;;trade-record-one的长度' t3 [$ ]+ f/ S' y  U7 [0 i
]# @& P" |6 P9 M: X5 {% V# X% K

- A/ q$ U" x" x6 X, b+ H' t7 c;;setup procedure. l8 i0 A. f, ^" n- ]
& O! c/ I/ ]3 r. g( X
to setup
. n* `7 B/ D, J2 y, i5 ~; K# R# a0 W$ t' a
ca
) S5 N0 j9 Z0 I' `
* c1 z$ M  V, H
initialize-settings

! J) n; Z4 _1 u. g. e9 h6 p) y3 W) V9 @7 u$ K# K0 K9 L
crt people [setup-turtles]
3 a& R8 K7 P- t3 d* A$ S) Q
, t0 `" [0 ~% ^2 T; x, c" B; U; [. b
reset-timer
  l) b) G* W" H' V' |

. |( f' M. P3 S" a$ }2 q# kpoll-class

. S$ a. V: R+ X) n* r; k2 C
5 i# \4 ]' Y4 M7 `5 {$ m1 ^setup-plots
; O' W' r; c6 {$ Z* A8 [

- y3 y2 d7 {3 Y+ Wdo-plots

7 L4 T# o& F5 V4 S7 H' K3 S' oend& }/ H% s  z# @
0 o6 B! u$ T9 m, S& V
to initialize-settings+ V* g8 p5 m/ B9 R

( C- d+ }( o5 hset global-reputation-list []

* ?/ u% n- _. m0 O6 e& ]% H
' \4 b5 }3 q9 s3 J3 g, M9 Eset credibility-list n-values people [0.5]
& }" L# X5 @+ s" q& @

: h) h7 J- }' o- I$ zset honest-service 0

2 X9 ~% ]+ Z3 y) M. y3 {7 [* w6 n0 U4 n4 L# K, C- [
set unhonest-service 0
! L; l7 l2 G9 K! r( k' `4 n. I
; E: Q+ j# N% {) ?
set oscillation 0
+ o  o+ n& x* I0 J' E# D
$ M3 R- j' \* T6 _. Q) Q
set rand-dynamic 0
7 d* B9 w# b5 V2 x
end* t0 e3 o/ v" A$ }9 |& S- N9 `

# r8 Y0 ?- t- d/ {* J& kto setup-turtles
; N6 \$ t5 f3 ^1 ]' |9 oset shape "person"
2 y/ i6 N, b6 ^setxy random-xcor random-ycor
/ F4 a9 J# e3 D9 lset trade-record-one []
& x, g5 R3 z2 t1 h3 F$ h

- Q! k) u: y4 h( w& [0 o3 ~0 Q- Oset trade-record-all n-values people [(list (? + 1) 0 0)]
' x/ I3 z, F1 Q3 N$ ]7 I0 G8 \3 x
4 g7 A; [  O/ s
set trade-record-current []+ F6 X4 \- i- B7 m
set credibility-receive []1 c1 H- [$ e( Q. Q
set local-reputation 0.5" C' ]/ J: |" u% ^1 N6 J! o+ q
set neighbor-total 00 l# i+ s8 R0 n) p0 q* R5 I. ^
set trade-times-total 0) l: u' C; L9 L; N8 r$ p2 E9 k
set trade-money-total 02 q3 `6 R( i$ g: `9 r+ J- N
set customer nobody
/ u1 G! j& d4 G" Sset credibility-all n-values people [creat-credibility]3 e/ W" g( [7 }# A( f
set credibility n-values people [-1]+ P+ ]7 X! ~7 }: u
get-color1 S6 E- G7 [. K

7 [  h7 j& j$ \, Send
+ q7 t% ]3 Z+ \* M* I  D. e# v% ^, g: n# s9 c$ F( B, O0 b
to-report creat-credibility
8 }) T# @0 N. F7 \$ l) x) lreport n-values people [0.5]
5 Q4 {4 L$ c; K- o+ i7 oend2 x& e& y, X. c  ]$ A2 L! `

8 z' X: ?4 c  }to setup-plots
& A# {: g+ w' p
$ j! D2 Z+ x) |% q. _/ [, Pset xmax 30
& Q# z, ^2 D8 v3 f9 ^. S
6 m2 |1 p+ I* t$ z8 {" X0 O. D' l
set ymax 1.0
  S* A+ y; p, J3 ~

9 l3 `2 B4 W9 Mclear-all-plots

' ^! w" g- z0 D7 o: y* @% d% d9 j
, j( Y5 P2 V# lsetup-plot1
6 c5 {8 ^+ G; e$ s) n( _
7 |4 `5 B& z- p. T
setup-plot2

) Q$ F( M# E" U4 }) E- Z* _  N# Y# \0 z; O& d5 r. @
setup-plot3

" T4 J% H. F: j, T- Uend% z, k; n# d. j5 y( D+ r7 l+ ^

5 O* I2 t4 L/ H  m" `& A0 @) v;;run time procedures
$ F8 y' Q: }; H2 l# l
" L1 J8 p) C  a- zto go
' x7 g' Y9 D3 f) Y$ F. y
1 a& [+ f+ r$ P9 T# k; @: o* Uask turtles [do-business]
; A0 |! x6 {! h9 P
end
6 J9 h8 ^9 G  w$ z: G6 Z" M- L6 d# s) n# v! D
to do-business
7 C5 U, R9 x) y' W+ C% u- j) C

" p" @- m6 V2 ^# _7 K
0 O$ |: H5 }; j4 d/ [! vrt random 360

. E! G  P- {9 F! ^. s$ r- y# d8 b4 F7 p" H4 n. `0 d  a- z
fd 1

& p  I5 ^( v# c# G" }3 h
. M2 S+ y2 g# G5 J7 Aifelse(other turtles-here != nobody)[

4 h8 V4 ~- q/ W4 S/ [% o' w- \+ Q* T' W, r
set customer one-of other turtles-here
/ e! A$ s9 X0 F- i2 Y( k3 k
( g  I7 J% r0 p2 n. U/ s- o
;; set [customer] of customer myself

7 x; n0 m  s3 Q3 H0 g, u
7 _' u+ L1 r; N% i5 O2 x% Iset [trade-record-one] of self item (([who] of customer) - 1)
8 w9 U+ R% i& f0 v: Z2 ]. h[trade-record-all]of self
/ b  ^! Y6 d* K. [2 l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# f$ p+ J% c. B; ~7 y

3 t6 K3 h2 w& x, Y1 |set [trade-record-one] of customer item (([who] of self) - 1)
+ m; G# X! f/ k* B: s1 M; E[trade-record-all]of customer
* D& `; P( q9 u, m0 }$ d/ H

( s+ j9 W1 f8 Rset [trade-record-one-len] of self length [trade-record-one] of self

( @: N3 H) ?% z9 _$ O2 a- m
% Z* u3 _. {& O: {: h& [set trade-record-current( list (timer) (random money-upper-limit))

2 G9 Q1 ]( g5 U1 u7 u! }5 ^: T5 T7 e+ w$ `6 ?4 E! ^$ i4 H' ^
ask self [do-trust]
8 J( X% Q4 R' ?4 _;;
先求ij的信任度
0 R1 b1 v% u" n4 R: m+ k/ N. b) K/ G8 U
if ([trust-ok] of self)
: b) c1 }% w, L& {) o;;
根据ij的信任度来决定是否与j进行交易[
* \) g6 c( x, g5 u- w5 Q; Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  Z  e+ A2 x, t2 N
# m1 s$ ~/ h0 j; z9 z4 |[

4 F, }# b+ j0 r( q0 O4 Z: ~
- N- T, A/ K) p4 w# O9 y8 E% vdo-trade

/ c; q& g& v6 J/ f. D% O; s& U( T; w& t
update-credibility-ijl

0 u% L% y$ c4 ^3 p* Z
7 y/ V  Z: Y% K% bupdate-credibility-list
/ ?! {% m: R0 Y. b( K* x- ?+ D" G) a3 x

' X& O% T7 F; w- Q; F3 S" Q# M4 e& h( S/ Y* B
update-global-reputation-list
( t# ]. \0 ]3 I
0 i# u7 v0 v6 T
poll-class
, U! P& y$ ~% z$ i. b/ W3 B2 R' @

) {) Y/ C: t$ B$ f2 y; R  Yget-color
$ b$ o: c0 _3 ^# P4 R, C
2 ~6 g. {. _9 m) x5 h" y1 R
]]! t5 p: q( R1 Z6 A# ^( g

" s1 Y6 l; q, K$ \; G# G& C2 A2 n9 q;;
如果所得的信任度满足条件,则进行交易% g. G. [5 n% X; ]
  X, x& u) S" z; w
[

' Z( p: R( \7 T, X  x) G1 W( R( E) h
4 l* p4 g8 ?) r. rrt random 360

! [- ~$ ^: B3 @
* }1 G; g8 H1 o/ U! B# l, z, c! zfd 1
4 `, P, [: ^# P) v$ d+ C
: {8 d5 [. S2 e
]
; I5 z+ j. e8 z& J- G1 e( T
' W" m: w/ w1 n
end
' R% t$ X8 Z0 m- l7 h9 V, y

  O4 Q; p, K- L1 W% @9 Sto do-trust
2 E  Q2 N1 J7 q! {$ x" R* `set trust-ok False' J2 ?9 V) A5 ?

) i/ T5 H0 {2 W8 x) @2 V2 l) b

' y9 W7 k) J, F" n7 [3 _! hlet max-trade-times 0
+ h5 n1 D% {% j/ uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  a8 A/ c9 d1 H0 B: s7 Clet max-trade-money 07 ?; [8 e* f! p; X7 }7 t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 x1 S9 F/ f1 }: [1 S) v4 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 g7 r$ e& b7 P  T3 z2 J
7 F- v+ X" G$ y2 T

9 r+ s' e6 R1 kget-global-proportion! L2 i. ^8 R! y+ x7 E
let trust-value
+ H" k' b, O3 K. y6 \& E" u) K& Blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% m: h  w) s5 X# i1 g( E
if(trust-value > trade-trust-value)
8 Z/ Z3 ~9 ]) q' I) H[set trust-ok true]
+ U5 L8 }1 l2 m2 D8 Q: a3 T6 fend
% Y$ U' E) }, D. M) i
% V5 P) _1 ~# E/ E# B5 t5 H$ {8 [to get-global-proportion
8 M/ Y, B& X5 |" r' Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 R  J0 x3 m+ p8 g
[set global-proportion 0]" s; h8 e0 y4 }
[let i 0
6 m& U3 Y( A) l) p# olet sum-money 0, @' ^) b# L3 M) P6 G5 _
while[ i < people]  z& {$ L" w* n3 L4 D* D
[
. _7 v$ S- z( P  y9 P! x9 o( |. h9 G- Dif( length (item i
8 ~1 f% y2 c3 k& G0 D! n[trade-record-all] of customer) > 3 )

+ E. N2 G* W- ^) C' `[
% J% ^9 ~# V- t) W5 x* d; x: yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( w  G3 S+ s, H) q; P2 ]
]
2 L% G# L  m9 a4 L. c/ `- B6 |]
* d& r1 n4 H0 vlet j 0
# S# l& H7 l, x8 ]let note 0
8 w6 a" P# N0 X  Ywhile[ j < people]' U+ u4 S$ N5 }2 i
[
% i+ e  r  T6 d8 Z. h- mif( length (item i
4 s" I7 ?# Y" o3 ^/ H# B[trade-record-all] of customer) > 3 )

0 s7 A9 q& d/ H) u" i' z[1 w: p$ j8 O' ^, }7 w7 p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 {+ e8 _8 D, S: i, L/ Q  o$ w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& }" k4 a) z2 O3 j
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( T! l' B) E' |: E2 H, j! Y]/ Q0 Z! z# }5 p
]
( {( o8 o: G5 g' z, J: vset global-proportion note
7 q+ g  p9 I. F]; D5 U# i) B+ a$ O) z! u
end
5 Z3 P1 W0 }% Z- N1 O* M6 T  S! o' `) J
to do-trade8 [) j9 B1 L: a0 J) A
;;
这个过程实际上是给双方作出评价的过程
% ]- I, W" W3 v9 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. F) Q! k9 a% R+ lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ I' ?, z3 l, k4 e% v
set trade-record-current lput(timer) trade-record-current
& v" V" P9 r. g& K& ?;;
评价时间
8 z/ D) N8 s' I4 o( V! |, c& O0 `ask myself [$ P! s( q, Q5 {: e: Q5 u8 R
update-local-reputation0 C- n# A! s$ x: }5 @% e: w8 M2 P
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 J: k6 \" G  Q  K9 P]! Z# ]2 F  d- v- h0 m' y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( B4 J8 B1 x: M- l+ S0 Y;;
将此次交易的记录加入到trade-record-one
6 V' r0 h6 c7 C' I* R5 Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% s, R& S7 v) D9 ilet note (item 2 trade-record-current )
& h& |3 H. h' n& W: nset trade-record-current, b# ~1 d& `; F4 A& Z/ _9 T
(replace-item 2 trade-record-current (item 3 trade-record-current))

& _! s/ z, q' u) ?% Aset trade-record-current! G  |5 b. t% r. g! N, \
(replace-item 3 trade-record-current note)+ G. J9 Z2 j% p' t4 c; u

- f9 \3 t  R# j8 B+ n

0 l8 f; u' B$ m- g5 |) ?ask customer [
/ a3 {& h! p6 _# @$ ]update-local-reputation. T, h3 x- v! b; y; Z6 m1 g2 ~
set trade-record-current5 [& Q" L- M* S2 [% f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 K7 R, ]: T! X" s  w( x
]
( x* x! a0 P8 ]1 D. d! G2 R' X( W& ~$ v

3 v- |# Y3 L/ l1 |8 @9 cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 O/ @$ i9 @3 _; o* M# w* Z

" o; t0 k0 P, ~  Z  o- }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; A! F) m6 }- ~; L8 K" c) T2 y* k1 r;;
将此次交易的记录加入到customertrade-record-all; w- N4 b7 e7 {) B3 t
end
: Z6 E( [+ _; a# ~+ c$ M$ Y5 [) w/ s! z# N: A) b
to update-local-reputation9 H4 C" _( v4 b0 K2 y* @; x; C( C
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 E) _" ]/ R7 v6 q% ~( n( M% J3 x7 l( D
. ~' @5 [/ R7 [2 I) c
;;if [trade-record-one-len] of myself > 3

7 H" }$ ^, O; j" w% T4 h, tupdate-neighbor-total
' ~( \5 n/ \: A- S- o% s0 R& O9 b;;
更新邻居节点的数目,在此进行* z! p  W3 ~0 d  e
let i 3( A' [) P/ }9 C
let sum-time 0
8 i( Q: m6 {4 K  ^/ }, |; Jwhile[i < [trade-record-one-len] of myself]
# x, p  k2 Y4 ^+ |: F2 p! \3 H[5 s% k- x4 [1 D: I9 v; ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): s9 f( M# V3 x8 y) G0 V
set i
& G2 I  `6 p% L( i + 1)
, d. @( W" Z: N+ N  c7 c
]0 i9 K, K$ S0 w8 f, Q/ f9 s
let j 30 @. l9 H9 M8 W& B8 t( V1 [- p
let sum-money 0
/ b" u1 ?9 G( m, _4 Nwhile[j < [trade-record-one-len] of myself]
: L0 t2 Q& d- N7 |/ r* l[8 I$ v; u9 Q' [  u
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)
' `& o0 l1 _, q$ m. Zset j
7 J  g9 A* Y) ~' Q" g* H: a  k( j + 1)
4 e4 |1 B, X3 ^6 ?6 {6 ?! o1 e% C
]9 C9 @( `# {; q- H: ^  P, c
let k 3
, s9 L# h& ~$ Q4 J3 e, O  b% Rlet power 08 v% R+ v% O( Z4 j* C
let local 08 n1 v+ f% T5 S3 V  v- i3 p2 k5 {
while [k <[trade-record-one-len] of myself]/ t. x$ V9 _- Y# T& l  x
[
# j+ |' V. R, p1 J2 Bset 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) 7 h" K: c1 w0 S0 K( s; h6 H
set k (k + 1): z7 q1 }- m# ], E# D( d
]; U2 G; _& G+ N2 i1 e' @: S% _* f
set [local-reputation] of myself (local)" u3 k+ F6 B# \; U8 v' b
end* \, s5 j! V$ l) ]3 G
! |: Z& s& m! W3 D' g
to update-neighbor-total3 h6 C: q) d9 d

& o: M9 M# @( V5 c4 B# Q+ h9 X  mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! d2 {, I& s. d1 l# H
# H, H. v6 P5 {8 N  l3 {
. d, \) G- H) o( j) E$ e
end
9 |2 R! m* F: @+ S8 p# Y7 P8 q: B3 |) @, ]
to update-credibility-ijl + ]  m: T! k3 y; j- g# \% i" ~

. q; t* w; W: 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。
4 U" l- X( p- ^3 nlet l 0
) ]9 U* B3 K* h! y" u! o" y& Wwhile[ l < people ]4 V6 Q  c; j0 P: H$ c. |; v
;;
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- j1 D# a) D- C7 l# z
[- h3 _' m6 r6 s: d4 F" Z1 E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); {9 e2 r4 _* p' V
if (trade-record-one-j-l-len > 3)
: U9 f, f- E$ h# p; @[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
+ c1 O) {  g0 Dlet i 39 x/ y; D2 x! K0 q
let sum-time 07 j& y7 \, X1 c1 \8 R) I
while[i < trade-record-one-len]8 R8 n! m5 @. h# d, I. [
[7 X3 h0 i% w3 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ G6 |; O/ i. ^
set i
0 X( j2 G) v' {4 R) r7 \3 K( i + 1)
. W+ p2 X/ D/ `
]
: J% F/ f) [  llet credibility-i-j-l 0& q# A7 w8 E) F! k
;;i
评价(jjl的评价)
7 g8 o' n6 }8 A6 X7 \% ~9 xlet j 39 Z! c8 [# k, C) U& l
let k 4. c' }1 z3 X1 o
while[j < trade-record-one-len]) j) R& n3 G- i/ ^; f' f
[9 R2 B9 s/ i2 W; h9 J) ^
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; Y5 u% |) L) h- h5 y/ |3 Z
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)
; A, @6 B; R. z' p7 N. d" x+ Tset j3 U/ t  e. l! [9 x. Y2 S4 z
( j + 1)

+ [0 \3 }/ R$ B: E; B- Q]9 V+ I0 e" b  x
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 ))
4 `  X. O% h. r( ^$ x) H) t# L3 Q/ K8 T! d% t$ M
7 j* B3 O- O6 O: @9 r/ H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 \2 t' q' d: P# Y' O) e& I
;;
及时更新il的评价质量的评价0 c/ p6 C8 n( n; Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) W  Y1 B6 S8 p" t8 T9 T
set l (l + 1)
" ?8 M( D9 x. M; s]
' U; ^) K" Z; K* s9 g7 v9 l. E1 xend
  d) r3 |2 w# u+ z# o7 _/ g) R4 [% W1 I1 w7 ?2 y! ~' F; `. [
to update-credibility-list, T2 g' U/ \4 V$ E
let i 09 ]& D! E) w$ {6 |  G- O
while[i < people]
0 W* F4 w0 l1 ^1 T& l9 b, I; }[
9 Q6 Q0 O1 ^8 I  h: H( Jlet j 0( D4 F$ I  x1 T; j
let note 0
  g& M8 O5 P9 f# G1 `) Jlet k 0
( y7 @% }5 a  e. ?" k- U) _3 L;;
计作出过评价的邻居节点的数目& g6 \/ `8 I9 v  l4 M+ y- Y/ U" K
while[j < people]& A9 n+ _  f* C: Y6 Z  u1 d1 `
[
+ b, Y# q/ t& \3 E) D0 z4 K3 Z& tif (item j( [credibility] of turtle (i + 1)) != -1)) x1 ?; G4 e$ ^$ c! R
;;
判断是否给本turtle的评价质量做出过评价的节点2 M$ b, A. g0 j. d
[set note (note + item j ([credibility]of turtle (i + 1)))/ a5 J5 |. i9 c- l7 J# ]" F1 ?
;;*(exp (-(people - 2)))/(people - 2))]

0 ]- c+ `# o* }  Hset k (k + 1)' M& T4 L* B) g8 O8 r5 [
]# @5 P3 w  k# D7 b
set j (j + 1)
, }& S+ B6 D2 P. b3 \8 K]: M6 X) X! f: d1 E) v5 f
set note (note *(exp (- (1 / k)))/ k)
7 E$ B3 @) ~- P; N4 ~set credibility-list (replace-item i credibility-list note)' ]5 N8 }7 p& e
set i (i + 1)
$ N3 ]( l) E2 T" m]% [# P8 @2 r3 }2 s2 r
end# _! m- F( _' V2 l1 N3 \
+ t  j$ l/ ~" w1 ~; T. _1 U
to update-global-reputation-list
6 q" X8 e% D) V' M1 e( jlet j 0
6 Z5 m+ l- l) ~! r" S; Pwhile[j < people]
$ c) I$ f& K2 d# U4 Z2 ^[1 B3 w+ ]; l! q* U  j+ G
let new 0
! a' c0 i6 x- @8 F- n;;
暂存新的一个全局声誉
% P& V% ]: G3 Q4 J  c6 J. ]let i 09 D6 J" E5 C3 Y3 n) O# K; Z& m
let sum-money 02 L# H* H3 i. ~, S1 q
let credibility-money 0- r$ g. E( K& X8 U# G/ r
while [i < people]
: g) b! A0 a+ X$ j; G[
" [2 I. a( V% B( xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). K- ]# I. B/ H+ m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, L" A- [1 L: \* p# i6 K7 sset i (i + 1)
! L$ c7 a4 J" k7 X0 |]
$ L& _# D, Y; d6 tlet k 0
+ Y+ R: m  C% a' {; s3 `# Xlet new1 0$ N0 r: I4 O, p* ^, {
while [k < people]
. L( ?+ p9 {, a3 r! W" ]0 u, A[* a- C. F' ~/ n6 s0 _
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)
; o: G7 V9 ^0 J; Eset k (k + 1)
- v7 H, z6 w+ B- b/ m* U0 r]
7 W( E- H+ p4 i* `# P2 Yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / U4 {5 M, j3 J0 d
set global-reputation-list (replace-item j global-reputation-list new)
! ~. r9 m: U. c; m$ Pset j (j + 1)
& o1 o! Q8 }2 ^( M  [7 n+ Y]% F* W7 r$ e% L% i
end
# z" @7 x5 V% W, Z3 l1 S5 @7 t1 `* `. Y6 o& I* P' z

3 S+ s2 h0 b" m$ g: v
; w- J! ]: m9 B& c8 x8 O; J- w& Sto get-color. b: q' Y$ @% G, O/ ^$ l  \

) W8 B8 j- n. ^4 J: S: D- ]' |( Fset color blue

' W# X- r; C4 [' F. @end- b" |$ x0 k; E/ M
2 d1 _' G( B* m
to poll-class. o2 E1 d7 n& Z3 n
end
1 S+ T* \3 r& b; i* i0 k0 G7 l& I! l& ?! z$ D# W' f
to setup-plot1! E, A. ~4 Y8 a* G1 e- o4 n; {9 S

$ v3 U% |5 T% g, H3 w$ Lset-current-plot "Trends-of-Local-reputation"
5 l( x  w8 _1 v* S: x+ `/ u' e5 ^
( D7 T" f0 Z4 T" n# Y5 _
set-plot-x-range 0 xmax
7 ]) b5 |' W$ o2 Y
9 @, c/ `, c9 l, s, ~
set-plot-y-range 0.0 ymax
7 ~% c0 c; B; d' I1 S
end/ t* ^% t6 ]( E5 {; k7 o

. Y3 }2 s! r: K) c3 G: c: _to setup-plot2
8 v# S6 M7 x7 r( x) r5 `- \4 D/ O
  H- ~5 Q% c7 O/ Y0 tset-current-plot "Trends-of-global-reputation"
  P' r9 F% ~% D6 _
2 }) J$ n5 K" b( ^1 U
set-plot-x-range 0 xmax

5 J, X8 Y9 R' f6 n0 A% _! p4 F
# r1 g/ L# P% V! u  J6 Cset-plot-y-range 0.0 ymax

7 ?9 `* l9 |8 G' T4 w) ]end
& g# F2 g! a& C0 V7 G% Q' U6 H) `; s, b* b& y  g
to setup-plot3
8 `  J$ G3 X9 P# u8 y& ]
( K0 V! g6 c5 q% V/ nset-current-plot "Trends-of-credibility"

* F0 _* |" }# d3 S  H% P& Z: b" z' F, L5 s8 V
set-plot-x-range 0 xmax

: S4 N4 g7 C2 l& o2 m4 X5 n4 G) `, |3 D0 u4 l% m
set-plot-y-range 0.0 ymax
& y6 @% P, ~3 _- A1 f' q$ t
end3 Q* k5 b/ A+ L6 ?% N. ~1 G' W% c
: k0 \  n: \3 V5 b
to do-plots* p' M2 K0 ^" T% j2 F
set-current-plot "Trends-of-Local-reputation"& l# i% Q) P) @/ b6 L$ O) B
set-current-plot-pen "Honest service"
8 K1 e' X4 K5 c7 i/ send% K) z# O! X+ w* }2 E. j: `# ^
- O% P7 |+ w) z7 o" k
[ 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., E9 f6 G8 D& M' h4 O$ m6 ]' |
- }- f6 O/ q7 M; W) [4 @: P6 B: S
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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