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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:6 A  Z# a5 {$ F7 A5 S. Y1 y
to do-business
- ~7 v" J" Y! B( |9 m# f7 x6 H rt random 360
+ g( j5 R7 U7 d" O3 F fd 1* A$ T  ]. o7 {, b5 a
ifelse(other turtles-here != nobody)[
# W" K: x' t0 G   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.' a5 U( F! d* [; ^$ T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * x/ |, q6 L8 B' i9 s* F+ n4 u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 Z0 P* M7 u4 C   set [trade-record-one-len] of self length [trade-record-one] of self
8 O9 }' f8 c. s7 J# W8 n& @   set trade-record-current( list (timer) (random money-upper-limit))
; F  w7 A' n& F7 |! l5 }
% N8 X5 S: E! y  J* R8 o/ s问题的提示如下:
$ @' b* [9 O& E# ~3 k1 J7 o( N7 p% c/ k% {! \' p2 U/ T! x, ~, N( ~8 L
error while turtle 50 running OF in procedure DO-BUSINESS
% t1 ?# w! i. M; x3 [  called by procedure GO
( p; [* m9 q- g- y) wOF expected input to be a turtle agentset or turtle but got NOBODY instead.) A9 d. E4 Z3 k; B- b% H: @
(halted running of go)2 W# w% M, n" h  z# l$ d  M* P

- L' {' l. x& _6 ^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~~
2 {; X  X/ v# X/ o7 \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7 \" ^5 Q5 J4 o
globals[# I% M+ G) \! R! l
xmax
8 h. e. L* ~' x. k" X0 [0 {& q' k4 o/ bymax; O/ U/ C; V6 Q( R2 y: N
global-reputation-list
$ m  r  h1 y; M; z3 y& x" `) ?. }0 d; o
;;
每一个turtle的全局声誉都存在此LIST8 e( f  A) h# t) Y6 o/ X
credibility-list& @' p- {/ `. L4 p
;;
每一个turtle的评价可信度$ \8 C1 j* B) Q$ P
honest-service( K2 G0 `1 z; P& |! G5 R" ?3 P; Z
unhonest-service
  L/ U$ v, u/ o4 ~$ ~7 e* Boscillation
* q# z1 o6 B7 r" Prand-dynamic
1 _- P& ]" M9 I4 Z( S]* T/ v& `: }7 D
0 V' q# q3 c1 G8 v  _
turtles-own[  a* i; ~. A# L  A3 t' y
trade-record-all
7 t+ s* d( V. q7 i;;a list of lists,
trade-record-one组成9 T. O4 W: V% o2 g) E8 S
trade-record-one
& M3 n$ n; h  |# 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
: V4 x/ |; J% C+ |4 \$ d5 \6 J$ J. i& ?$ U/ t( T( d. y3 w% q. n; I
;;[
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]]- x( Q- o& F- W6 \4 E
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]; O. p0 {( U1 s3 Z, M4 y$ K
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
/ X# G# u, z5 @# D8 Zneighbor-total* e6 A/ u. Q4 u$ }" Q9 B
;;
记录该turtle的邻居节点的数目& r( X$ o& `$ c$ P) O. N
trade-time
" N8 m: Q2 g7 Z7 C;;
当前发生交易的turtle的交易时间$ H( v# d& z/ {7 _# H- o! J- k
appraise-give  O6 B" L" s9 i4 r5 N
;;
当前发生交易时给出的评价
: V2 f0 B- S5 E8 ^  [appraise-receive7 o- ?% G# ]' [$ H- ~3 I
;;
当前发生交易时收到的评价  r3 M% ~; o* W. N6 ~
appraise-time3 j7 A8 s+ u/ R# q' F
;;
当前发生交易时的评价时间
3 q) g: P1 L1 O+ e8 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* H+ B6 T* S6 q* _7 Ptrade-times-total
4 o1 N  f8 J9 n' S. L) [2 p;;
与当前turtle的交易总次数
5 w$ V- ?8 u2 a) Q) l$ z  Btrade-money-total+ _. s3 H! k" q3 q' q1 o
;;
与当前turtle的交易总金额, }4 z4 m/ t; ?" [, M9 E% P5 H
local-reputation
9 V8 w. z: W: Tglobal-reputation  [+ t: w% d" y+ Z. j! q2 T, S# [  t
credibility1 k1 o3 k' \3 X. X2 Z9 n
;;
评价可信度,每次交易后都需要更新
/ [4 k3 t: u" _# m" Zcredibility-all
4 }- }0 V& o; d7 u) @" @1 d" u5 };;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
+ N$ y( W1 E# Y; H  n4 U4 r* E: c6 o$ n" }  X+ M/ m! F6 }1 F
;;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
  y8 C, s$ i3 Q4 S% r3 B) bcredibility-one
, h( M' a& w) y/ @! h; N- S;;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
) W' W( _, g7 F( i+ Y' F2 R0 Hglobal-proportion
3 N6 r2 z& h( C3 c# Y% C- e) pcustomer: j! ?; N' @( V% o; ^" X
customer-no+ c" d' W: w3 j& _- Y8 e
trust-ok# M) p3 b7 h* ~. R
trade-record-one-len;;trade-record-one的长度- v, s/ c$ m+ z0 A/ J2 w
]) }" y9 Q& O9 w" _! u+ h

8 ~- ~  [7 L" A2 \7 i# ]2 i;;setup procedure8 O' c5 T) h& y; e
* A& u9 ?& f" U8 G! O1 d
to setup
: Q- y# s/ b, H$ e; X. l; z: d
* E; v( [( B* U9 q+ V4 eca
3 J6 O8 e' O( X6 C1 a2 ~
# a6 S0 e7 n, B6 h# c3 S: N
initialize-settings

! U/ D) H# u) u0 V
) d: `3 K6 g4 O6 ^! bcrt people [setup-turtles]

) S9 t0 d' A6 }  y' ^" s- J5 V9 r' m8 a
reset-timer
. D- A" I9 J$ h. t% S2 n

, `0 E9 `+ y% apoll-class
: ]% m3 e1 J9 d! c
% l; s0 E$ Q4 x5 Y5 k* c
setup-plots
3 v$ U5 A3 G' m6 a

6 @) c* ]7 d6 h4 ^' Odo-plots
2 }( ^% ~' t( O% c6 L& {8 X5 T
end, z+ A1 g; f1 i0 W& ?0 G( q
0 k  x. D! _& [
to initialize-settings& l3 ]$ x; [' q7 |" j$ F
& x1 B- }  }0 m. e9 M
set global-reputation-list []
- r, A# q2 X/ z+ e

) K, ^, R0 e. X* \3 O% _set credibility-list n-values people [0.5]
  P7 C* J  [0 E" m2 v) C
! i2 d( ~) k7 ?4 I
set honest-service 0

$ R* |& o# a* X' m3 q2 E7 X$ d5 h% H6 L' j3 @
set unhonest-service 0

$ Y3 ^; }- P* c, {% a+ I+ J% u0 y" U( r8 g% M' C
set oscillation 0
% E4 q' H# |& ^
8 f  O; t8 W4 a. \5 G3 s* O* `
set rand-dynamic 0
4 J; Y0 p* F4 e, B/ B' S
end4 V: }& f2 p' S2 F1 I
. E7 q/ S# I' z
to setup-turtles * p8 K7 }8 E3 \8 _9 x
set shape "person"
. z$ Z( _" T  |6 Z" Qsetxy random-xcor random-ycor( h, ]. S8 o1 b6 Y! H
set trade-record-one []
$ }  s) Y/ o5 j% j8 `: Z

3 k7 Y7 m) ^6 X' c5 S' v0 Q# rset trade-record-all n-values people [(list (? + 1) 0 0)] ! p; f6 s) x* k2 x9 C5 z) x
2 b; R  O( f7 g2 f1 [- l: N
set trade-record-current []
, h4 V% Z4 I; q) ?* tset credibility-receive []
' H* G9 V4 E9 f6 Y4 h- tset local-reputation 0.53 J$ K) W2 A+ N
set neighbor-total 0
3 q/ {" H+ r: e2 ?+ Aset trade-times-total 0+ x& X% _3 Q  [' N5 i- Y
set trade-money-total 0
8 _" w& x( N- U0 {) Kset customer nobody: L" d, |8 }  I% {
set credibility-all n-values people [creat-credibility]
9 e& n3 J1 @( r# Mset credibility n-values people [-1]
& g* n  k; a5 f0 cget-color8 x$ J$ s% `* C' z* ]3 u5 O* M

+ Q% \8 m, Q( kend
3 r, o) M" _! J" G" R1 x2 j) m3 D1 D) k9 l; C7 ^2 w8 A
to-report creat-credibility
% q" A" T9 V" x5 D- o1 c. H# preport n-values people [0.5]
8 Q1 Q+ k' m& F! I2 }, Iend5 j! ]/ s4 O8 |; }- A$ P

9 F% \6 p* K$ L2 C$ t4 Wto setup-plots
% m: f1 M: C, z2 p2 B
/ [- I; m7 S0 F% g/ u2 Oset xmax 30
+ A3 u0 q% g) n3 T7 \: L* C0 u
$ \( O/ Q- o6 V# B. _
set ymax 1.0
. n* b$ N, J% W$ N4 U" a
( Q$ @4 e# n# t
clear-all-plots

$ Z* C: }" |0 X8 a2 B  ?
/ B: t, |7 W  o% @  csetup-plot1
; _: B- l4 t: }
0 ]; o4 k' w* i7 e! |# u
setup-plot2

+ D2 p% i* a4 H% {6 }3 e1 R# r- ^' d4 i8 A% I
setup-plot3

0 f( r" |; `+ l) m! O, lend8 I* m2 k# ~; e3 J( i
3 G, F1 C& o# `) M+ V
;;run time procedures
, E' x% J; w6 f0 _6 W9 [) G. s! t. y+ M/ T0 L, n6 ]  R; o
to go
- r/ o4 U1 ]4 ?2 G
7 o! c5 f) T4 I1 J* v) Y. A+ Bask turtles [do-business]
* l; d* g; P7 x: z3 t
end
: K% a3 P+ }6 v$ a2 @  ]
- v) S" {  a9 R! gto do-business
' j& z, x, F7 p5 m  R! D
  `$ K# H: ]. m% z0 c' l
% l- w9 J3 Z9 R5 H9 @. B
rt random 360
2 w- K3 g/ n9 M$ ]- H7 A

  @) S) T9 E% J& ?9 T3 J+ mfd 1

4 U( s: y* d5 d* {% t
3 Y( B, Q5 |: D, @5 y+ t- K% S8 e2 Vifelse(other turtles-here != nobody)[

& {9 @4 c6 c) \1 M0 `- h/ `. D" h( I  l6 A' p
set customer one-of other turtles-here

7 W/ t6 g; k; Z/ p7 ^0 `4 d7 P4 k6 z1 z8 q3 ?3 k
;; set [customer] of customer myself

" c) n0 B# a* o9 ^% M1 v
- V) R5 s) @' g# P! V# Iset [trade-record-one] of self item (([who] of customer) - 1)
/ O4 \2 ^. D) Z* q[trade-record-all]of self( y9 I/ `8 T  F$ r9 M' x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; F  s( j& n5 ~2 b5 J
+ i& u  W8 j6 o7 L6 C- ]
set [trade-record-one] of customer item (([who] of self) - 1)1 N6 e2 z; V+ h" a( U, W4 m
[trade-record-all]of customer
9 }# w. ^. T% ]6 r: |! ^! R

* F* l& l* R6 _8 z0 xset [trade-record-one-len] of self length [trade-record-one] of self
, {7 u0 f% @# x! H; R7 P

  o- D! D6 F! p8 ~* R5 ~set trade-record-current( list (timer) (random money-upper-limit))
/ |( u8 V- m9 a. s5 k) H3 l1 `1 O

: E% V( c$ `1 ~" c/ m5 F# J& `; ~, U- lask self [do-trust]
' q6 s$ N# y% c: Z' ~;;
先求ij的信任度
" `0 X4 _6 T: C5 d" ?0 k  U$ U; N- g8 ?  y
if ([trust-ok] of self)
. M! H+ o: b: N: T. K;;
根据ij的信任度来决定是否与j进行交易[7 {4 F# p0 K9 C6 t% ^  }+ B" c! I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( u9 b, ^8 o1 g8 l. Q
6 n" u* @# p7 w! g[
8 g. G" H! A8 S

3 ~; ~3 G2 e  p( _do-trade
' X% [3 O" Y1 U9 }7 L

' W3 z' @- V0 |6 Qupdate-credibility-ijl

* p0 Z& j6 v  O1 b  f" `
; S' y7 Y/ e5 s$ b# E- G3 C7 u, Fupdate-credibility-list
; t0 q  W4 J- W7 o  L0 o- G  l

8 k8 }. V7 F) |. K- [3 g& U* H# J: z. T
update-global-reputation-list

2 r6 W2 M* {+ C4 U* L' y6 O7 e( x. l, n1 J6 p
poll-class

0 e% _9 u9 V# E
* ^3 t; h: u$ M( C8 Uget-color

6 p+ ?" @  F1 H0 X# i8 [& l1 q5 N) S& x: h( {
]]) ^1 @, y( O$ H6 K0 T' Q6 b
7 I5 |% w$ g2 m8 e6 r+ c
;;
如果所得的信任度满足条件,则进行交易- W1 Q1 k4 T5 s# W1 S4 G

! u: {% b2 s: K' Y6 d. c$ J[

9 m  U7 j# u4 n& N5 t9 B# Y5 G1 r/ j/ ?1 \. n: d, J( v9 b
rt random 360
( a5 m5 A/ j" }% h$ h7 m
0 n8 P2 s6 L, S4 @! N* a0 B6 ]) M* ]
fd 1

9 o+ ?7 w' z  Q! W6 F% e: Q, H  A* q
]
1 g' a  W2 L+ K/ j

- Y" Q* l9 u  |' W5 Bend

# ~0 |* H2 J3 G/ \; j) A6 M* Z% U% j0 a3 ]  j& o0 [: X
to do-trust
# w) P7 x3 U/ x' X) G1 F1 Pset trust-ok False
/ p3 U/ y- L$ y7 r' n1 O* p9 }9 z+ ?0 ]5 F' d$ x4 R& d* k, K

8 U: `$ c+ j; S+ I: E# O- Vlet max-trade-times 0
- l6 ~- K- H4 B( b: n1 kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* s, k* X1 \: g: M. u2 \5 p
let max-trade-money 08 D% s  h  O: b) J$ e- C5 E5 @) L* Z- p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 H  C7 q6 S. D% Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); C- O6 R0 P* F2 X7 |
6 a; V. s8 K) ]# w6 z" F' [

* f; k3 ~% B1 Y, i7 L: J3 _get-global-proportion' \$ n9 [- X; U, d: d8 Z  m# y
let trust-value
" \( V+ Z0 }0 S" d  Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

. t( b7 T/ U& L! mif(trust-value > trade-trust-value)
% `$ I- f9 K1 _[set trust-ok true]
4 [, X$ B7 h8 R/ ~/ I- zend) @7 \' n1 @7 U" v" X' ^+ `
8 @# ~* D" p( W
to get-global-proportion- b. e7 e. \' Y8 X9 i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 C' [; C* s$ ]: V  B
[set global-proportion 0]+ S( G: q7 \+ ~/ V# u
[let i 0  X  g- ?- o, |" ~
let sum-money 0% o9 ~& U) L+ l" T2 P/ e
while[ i < people]7 Z+ d. T  L. f
[
0 W$ w2 d% J* U4 j5 \if( length (item i: O" u# b+ v. ~. `1 S5 F
[trade-record-all] of customer) > 3 )

7 b7 z# t9 X8 G/ S7 k- g; f[6 e8 ]( F( l" f& E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# q6 {/ M& G, F& h
]
$ ^3 |2 h1 Q8 I& I! A  \0 `]5 \. `" T  C  v; I
let j 0) O' V& U) U$ B+ w  c: ^+ N% ^
let note 0
7 c& Y% O) O: B- l; [( Nwhile[ j < people]
$ P' `. f% C2 H6 c$ n4 R2 h9 q[" E3 F: g5 U; k; _, _* Y7 \
if( length (item i
: B# w' s6 W4 C[trade-record-all] of customer) > 3 )
' b( P- J7 h+ E
[
" z% E8 {2 s" Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 n- d$ n3 h' ]; E1 v: F4 i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 J& v, h  K3 R. ?& `/ `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- X1 ^! _. Q$ n; ~0 M]1 E8 R, l. q  q+ F+ S: r
]9 n$ b" L, N8 s  t' m3 n( g1 d
set global-proportion note
' I9 c" t" _- ]+ o% t' x/ Y* E]
: C' U3 a" V" Y* ?4 q& H! vend1 [0 F. T+ G* W7 Y* l% b' K% D9 H9 U
$ d+ F, i4 }, E& i# a7 P. B7 d2 Y
to do-trade
! h6 i; v3 u$ v- h/ O4 m) |;;
这个过程实际上是给双方作出评价的过程
5 v. y% D/ x, ]4 c0 S5 [5 w5 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ @! t- z% J8 ^  r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 ^6 o& y( n' Y' ?9 c9 C( g
set trade-record-current lput(timer) trade-record-current
/ [' I8 o; a! ^  }6 i;;
评价时间3 W0 z% W  {) Z4 z4 s
ask myself [- t8 A* ^# Y* E0 m; Q
update-local-reputation
! J+ n  Z1 c4 J0 {& _) y6 aset trade-record-current lput([local-reputation] of myself) trade-record-current
4 w; x2 K3 I9 N# u, T]
# g1 R$ g+ t8 J8 ~  ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 o# P2 b* N9 ~; _$ ~- u$ S, y  [;;
将此次交易的记录加入到trade-record-one8 q& P' |- q& c5 V0 h7 C% j! g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), O  w& N' x3 Y. I% f- t
let note (item 2 trade-record-current )
! F6 `! u! l* q# f  d( fset trade-record-current; q4 Q3 H$ ]7 ]
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ V+ f7 L5 O; K. X' Rset trade-record-current. V1 [- u# x" S% D* X: c
(replace-item 3 trade-record-current note)
- ?& A1 p: r- O& |- [; z
  _5 y, V7 ~: {: N( m8 E* f
4 m$ M6 l, t8 i3 h
ask customer [: W* u" u% b$ ^7 f# J
update-local-reputation
9 n3 @" N8 ~* R# rset trade-record-current
& ?# u- F( C" \( g4 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 T2 [4 n* N, T1 z3 I]
  R3 h* v4 D8 y9 a& I2 J, J$ C. m! {' w6 q, c  p  d
& X1 ]2 d# W$ U# x+ z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 N7 [8 g2 d; m7 R/ l2 \
& \6 e9 h9 E4 A1 w5 v# }# g- d8 `8 {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 ?9 Z# k8 k+ t$ }* S2 N- |+ [
;;
将此次交易的记录加入到customertrade-record-all  R/ w7 B4 B. H; }
end! b5 P9 P) m+ i+ ]! `
7 t+ f- f( C" e$ H) k4 Z
to update-local-reputation" l) _) d) B4 O; F# Z" L; Z
set [trade-record-one-len] of myself length [trade-record-one] of myself. O5 M+ l: E$ f$ |

( E" k* h. X, W5 `) L; V" ?" S0 i6 W: O7 c/ W; s9 Q
;;if [trade-record-one-len] of myself > 3
! p. V% {( q& q6 e4 e
update-neighbor-total; @  U$ o5 [' p5 x' e, i
;;
更新邻居节点的数目,在此进行, [- F% ~) A7 \) y1 G* c/ m
let i 3
2 r# n/ D3 N# N, _/ blet sum-time 0
3 O# m0 T5 U& F2 W9 Iwhile[i < [trade-record-one-len] of myself]6 s! B* n3 n8 {
[% B4 V( j  S6 v4 \, |" r$ W' K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 w. W% G6 Z  U. r9 J' ~/ }set i
. a5 A# @! H, n. z. Q/ W" o( i + 1)
+ W. x+ H1 l& [% y
]' M# c! t! A; W% T. O* S% q+ X
let j 3' U  t+ j  F3 h3 D
let sum-money 03 e2 C  }! S% A( R' v4 t& q
while[j < [trade-record-one-len] of myself]
/ z  _9 C9 j, b5 F# o[: J" f6 S) _$ p. i; ?+ l# f4 b
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)1 g5 w( {" s  W+ [
set j
6 I4 ~. F8 [3 H( j + 1)

& |+ z& c3 v$ e* K! J" }]. t" n$ a: Z. f0 p
let k 33 `+ ^6 X: e  o3 i. I5 f
let power 0
2 G1 ^2 A1 f' O: d. C0 klet local 0
% l6 v7 [4 _0 p* m- j2 zwhile [k <[trade-record-one-len] of myself]
# L. h( _8 C6 V' |  N$ m[2 ?/ t4 i- }5 E" k, a, Z  ^
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ( m6 z' z! B$ M, ^4 @
set k (k + 1)( W$ E7 U$ U2 u2 k: D
]
9 i7 e2 N* X7 N: Mset [local-reputation] of myself (local)
* R, Q* V/ q: m$ e$ r9 j; t$ k) w6 Oend5 Z' p% T9 C% }# `  z  P
: M# F+ ?1 b, V' b
to update-neighbor-total
" ~8 G* h9 W. z! ~$ x
; o% x3 t5 K* E9 y  E  gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* I! M+ @/ }/ _  r6 `: _. L
! K0 a" V5 T# x  q: n4 U
4 Y* r0 ?: Y) L% t/ \. k
end
" \( J  L" R$ I5 a" {( m6 Y6 B+ j& f2 e2 E* i$ r- g2 a  ^2 `/ C
to update-credibility-ijl $ y  t' h  o+ X3 Y8 @
' ]1 P9 |' ]4 Q0 F* {
;;
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。  i& W4 D3 \1 w( o- s
let l 0
7 u# e7 c+ f! |, pwhile[ l < people ]
/ S5 d& `; d3 `# z1 ?3 O;;
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( z5 S& H8 Z$ w8 ^
[  F0 a) r: u; Z. i; T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  Z  T' |$ S* _  d" Kif (trade-record-one-j-l-len > 3)
+ p. I! G. E4 p; g1 k[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# ~  ]) s  G: ?9 r
let i 3
3 a% y2 H- f; z: @% e! W( S& blet sum-time 0$ d: {( d4 s1 j, c. c1 y  e: {$ T
while[i < trade-record-one-len]
0 _, Y$ f8 ]/ y+ C" C% ^5 V* H2 a[. ~4 y8 `: C- J7 c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ r! g- V( y% {& t- ^set i8 \! G2 }# v: z  f% P4 u: z7 M
( i + 1)
' H( Q* j, R6 {+ Q( R4 o0 \
]+ Y3 G! \  F+ |6 f
let credibility-i-j-l 0; D2 }7 W$ D6 C- ^/ J
;;i
评价(jjl的评价)
( t) h  n$ w& H. hlet j 3) ~  O% M( Z4 Y  H- q/ r; t0 S
let k 4
  o8 W- {7 d) r' A+ H4 Z/ Nwhile[j < trade-record-one-len]  Q% x+ a* i0 O' ?: w: U0 b
[% D' d' M7 e( E1 K
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
0 W( `" ?3 T  r4 ]- oset 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)
2 j8 {5 D. o0 H6 _0 f5 m( Eset j
: M4 @. ~4 S' R: `: W( j + 1)
5 Y3 v6 P/ R* E
]
* c0 \2 Z% E* 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 ))
# \* ^. W9 F& J, H' t  P. r* G( W. N1 M3 ]. U( Y9 ~, l5 k

8 h, s: F% Z* Y# ?# x% z* J7 s" Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- x$ }$ ~! ]; d& h# y6 f) @
;;
及时更新il的评价质量的评价
- Z$ y! t3 q, z4 l+ }. yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 ~& ^& F  H) O0 Pset l (l + 1)% b: u& X0 f( b2 o6 y' N) K
]
' C8 K0 r) |; f) y0 |- h: gend% a0 _9 S$ p0 k6 \

5 A3 m# P% }! u  F  Y- C' Xto update-credibility-list& I6 e& @. Q. T- v2 g
let i 0! z. R- `6 T2 r+ j3 H5 ~
while[i < people]
0 y8 ^, C( `0 Z: I3 u- u/ S8 M4 f% o[1 l5 C( \* O& n4 F! P/ \: v
let j 0* D' H% s3 n, }- l4 v* m' ^
let note 0
& P6 n, g0 S% R$ p# c5 F& Dlet k 0( C2 X+ t. n& N
;;
计作出过评价的邻居节点的数目0 Q4 \1 p6 C. w# {
while[j < people]: t; z, z. B0 F( w
[+ d0 ~8 B5 o7 A  B
if (item j( [credibility] of turtle (i + 1)) != -1)
- u# h. S. b$ g- l* U;;
判断是否给本turtle的评价质量做出过评价的节点( P  Y2 N- _- n  H6 W
[set note (note + item j ([credibility]of turtle (i + 1))); q; e/ ]4 O: e
;;*(exp (-(people - 2)))/(people - 2))]
3 i( s% m6 f& K5 h8 \% f
set k (k + 1)
+ r  {2 F/ w7 k$ P2 _9 B: E1 v]: A$ H0 k# s# A9 j" r9 l
set j (j + 1), [/ z: G0 j( ?8 y& A8 V
]7 f# b, x& x: n3 P8 l3 e
set note (note *(exp (- (1 / k)))/ k)7 I% n2 S4 ^+ c1 S9 R% t4 J
set credibility-list (replace-item i credibility-list note), [: h% J" k( X3 L8 r
set i (i + 1)% I! d2 |- V4 L6 x
]6 o  r" t+ G! }, b) n6 K# H
end& s3 a) M: T; m0 d
) c: X' ?  C( G. n; |" L5 v% ]5 I
to update-global-reputation-list
4 E5 Z0 i: D9 `' l) C6 w6 O/ Ulet j 0- }/ L, c1 t0 T" C% l
while[j < people]" \& t; H# q! P; z1 t
[
- g# v* ]. d: \6 x: {7 F* Ylet new 07 e2 V9 y3 h8 c' ^: u
;;
暂存新的一个全局声誉7 a5 n  k/ C7 e
let i 0
( A% L# T$ P2 j6 f0 rlet sum-money 0( _# p: `- X& a. s' e8 ?( K2 G
let credibility-money 0
6 c* h7 a( y& W* [0 O" S+ d/ wwhile [i < people]
( T$ T6 D1 }! h& a. j[
% K$ J% Z" c# P6 I& dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ o% e; J' A" S$ Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), i- J8 s; u7 A! H' Y% b" s
set i (i + 1)) `( G. b6 r" a7 S! j' `
]- _! H9 R5 Y/ p( A: [
let k 0
1 @* P6 P& |, M2 _, _let new1 05 p' D. v. D/ P3 k
while [k < people]3 s- I" t) E, _" a" M; S/ d9 S
[
% i, g4 f* P. L0 M: Bset 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)( l" B1 |8 ]: n& P( B# @, W. R
set k (k + 1). Q% U, ^9 q. R' b
]8 m9 H- K" R: v' S" h6 Z* W% p8 r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 Y# c2 l& m! f" f7 X& Vset global-reputation-list (replace-item j global-reputation-list new)! X3 d6 Y+ {& H
set j (j + 1)
2 B: U$ g8 ]9 l( `& B- s]
) ~8 x/ k- A/ J* U* eend" y: n& o& p! G9 h

3 ]0 ?5 d# a1 T) j9 X2 v1 ?$ G# h4 v! _$ f/ p: p. `

" d, L! Z: t3 {) q: Qto get-color
+ E+ ?& N: _% t9 Z, Q3 A# M) i2 P% F6 W4 I& H% V% q
set color blue
  ?% d3 V$ X; t: y/ @
end
: W2 \+ l9 p; u# ]" y0 F& V. I  c8 a4 q! S  K2 s: F' V
to poll-class
( T8 a# \; I' c) eend
! I& W6 F: ~3 S8 s, ?' h' |, ]
+ _# s+ {5 A( w* f9 ^to setup-plot13 t/ v5 b9 O6 Z6 Z+ d5 z

8 H; ?7 b9 }/ ?- qset-current-plot "Trends-of-Local-reputation"

- _5 R, A/ y/ D7 {7 [" J
) m* F" X1 M. b# d3 mset-plot-x-range 0 xmax
! {7 S/ Q4 E4 I
0 [- O; @) s- W# p- W
set-plot-y-range 0.0 ymax
3 p2 L5 @/ X+ B: U! p
end5 o5 w. }1 q) M! P9 s
! ]/ a0 T6 `% q( j: V! I" _) U
to setup-plot2! l2 d" s$ a! ^4 p7 c

3 N- L% |2 Y( Bset-current-plot "Trends-of-global-reputation"

! d0 v5 |7 x  d7 p* p6 l3 W1 O: n$ P, j1 o" p' X0 ^& ]
set-plot-x-range 0 xmax
' n4 [% q$ ~8 k8 W9 @$ p9 ^
/ q. _1 c  c) s  a
set-plot-y-range 0.0 ymax
5 U# R$ d6 j& R3 u! ]4 b- h# e
end: W! T& f' s8 r! V0 R+ E# |8 h2 F

4 u( s+ _! r$ {2 O! Uto setup-plot3
' x8 @+ f4 G/ o( w8 G0 {# E
. c$ d) d, x# Mset-current-plot "Trends-of-credibility"

2 O' v+ Q' D( Q8 ^& n3 }4 R% E* s: |& n5 T; E0 n& X( j; p- V
set-plot-x-range 0 xmax

+ x; [9 W  U( i* V& \& H& i) I# T# G4 @( g
set-plot-y-range 0.0 ymax

) p" J! d  q3 b/ [: {5 q. [6 Dend
  R& T: R5 h3 J' x& e* h
  L) z! n" \" H! I6 ~- m0 W$ n2 n- kto do-plots
" I5 k/ Z; c% A% X7 Vset-current-plot "Trends-of-Local-reputation"' x9 q3 q8 f" E. u
set-current-plot-pen "Honest service"/ ~" D* Y7 _1 O! Y
end$ _7 I# Q8 ~* s+ z. v1 O7 H
; o1 o& o) A! s8 d7 G
[ 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 V- P$ P) ]
: T( T! _+ B& |; A- O; n1 k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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