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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:
8 l  Y7 ~/ z! k) x* ~to do-business
& T0 n8 W4 W3 a& s rt random 3605 F( S+ r; K* b1 i9 G" D
fd 1
* y8 E9 [7 p9 Y* c ifelse(other turtles-here != nobody)[! C$ [8 e) Y/ X  h% O
   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.! D" E1 j5 ]3 a  v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 }* y( c. T' `1 o# r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% g; r4 z  W" b$ |  L( J7 j
   set [trade-record-one-len] of self length [trade-record-one] of self
3 ^- D  h$ A2 |. Z) A   set trade-record-current( list (timer) (random money-upper-limit))% [! i7 c2 n% N, U) X% E6 N
7 m! H* @/ u+ U5 c
问题的提示如下:+ K; }$ D3 Z1 w  S0 i5 e

, J! }4 D5 h9 i# rerror while turtle 50 running OF in procedure DO-BUSINESS
5 }1 J; M, y" k  [! z( Y  called by procedure GO
6 F- f/ s+ t3 r8 M2 X; ROF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ c7 a4 q  D: m" u" P9 x; p4 K
(halted running of go)
& W1 R2 n- P# M' t9 ^) m4 s" A; G8 }3 P2 `/ `3 Y/ I
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~~9 s1 H0 p/ L, `. _* g
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8 M  D3 a/ P4 ?
globals[
6 `8 J: z( V. A( G( T4 Ixmax
# X+ V) g' s+ r! aymax1 ^8 p( M/ s1 l0 ?
global-reputation-list  V9 m* d& }6 g2 ^  Z2 X4 d5 {
' a( C- P( W; ?, L- C7 h0 y) k3 ?
;;
每一个turtle的全局声誉都存在此LIST0 u! k9 R1 L; q  E% B  o
credibility-list
% @9 i2 i9 N! `  |9 [;;
每一个turtle的评价可信度7 ~' X  q1 I, Z& z
honest-service8 `& `8 ~  ?; \3 T
unhonest-service
) u  H8 R2 V! Z& a2 e' goscillation$ E9 \, @7 |+ {, D4 K" C: p* B
rand-dynamic+ {1 C! |$ u# R7 j: H- S
]
# X* M1 l8 {& `4 r+ [' E* \' G' {( A. R6 U$ d
turtles-own[
) z$ N" M) c9 _( y2 _% X* Jtrade-record-all
2 ~2 O0 {$ R2 E) O! {; r5 A;;a list of lists,
trade-record-one组成
6 {& [, z' Y7 H( a0 h- R+ Qtrade-record-one
4 c6 y8 I; N  d, m- u0 p' b8 _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 W! z$ y3 i! E) J. p0 o4 d  l7 N5 D0 l' d8 @8 w
;;[
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]]/ L( ?, s7 m9 ~+ l9 `! J
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]9 x$ a0 P; C  V3 U9 ?! }
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
% g+ |/ T  l! k1 Q$ Hneighbor-total7 ?- h+ ~; ]4 _% V# i$ o
;;
记录该turtle的邻居节点的数目
0 n% l; O/ d+ q$ Ytrade-time$ m; l" c9 O' z+ x/ T( k) N
;;
当前发生交易的turtle的交易时间1 k& Y# }7 F+ s( u4 `* I/ l
appraise-give
  c% K7 F- A9 F;;
当前发生交易时给出的评价  s  Q+ j9 C$ z8 f# K
appraise-receive
% g9 @* L. T/ w- [. f0 Q;;
当前发生交易时收到的评价5 P5 w& d# B5 C( p5 D: l, |! `& T8 m
appraise-time
; b; E1 }& m4 X. d;;
当前发生交易时的评价时间
8 ]1 e' Y1 D- Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 [$ F1 D/ {+ \6 {trade-times-total
% w$ b* y; ]0 `# x: q;;
与当前turtle的交易总次数' ^4 d2 v( Y4 t# R  \. y
trade-money-total$ J0 y$ d# }: H! C! Z* j! M
;;
与当前turtle的交易总金额
; r/ W3 r+ b- N( t5 H9 m, Ulocal-reputation
/ ]1 ?; f- _; y. ?global-reputation
/ B) Z; _' ~1 acredibility
/ w+ Z- Y& y0 ]" L. };;
评价可信度,每次交易后都需要更新/ h: [/ e1 e" N- ?& O, {; V
credibility-all* Q0 B0 `' `* A) L/ O
;;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/ N3 d  ?' F7 s. f
1 a  I5 o3 U$ l0 [
;;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
# q8 @2 l* Z) d. Z! Mcredibility-one
7 l6 v4 D8 L- o* R$ m6 r% G! G& l7 p;;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
! D1 H! g& V- c1 Y7 Y( d/ Sglobal-proportion0 U( G9 B3 b& `. o% V% M2 Y' Q
customer
$ A- ]& h! R( R8 n0 z5 ccustomer-no* ~+ C" c# _) ]8 S% ~* J$ \
trust-ok
8 M* b' S) d- ]1 _trade-record-one-len;;trade-record-one的长度
, W. ?1 U7 l" d, J' P]
$ I6 \* y; O! n; {5 A. j& I$ a' l( E8 Q
;;setup procedure
+ {3 G# j2 P- l  q' o/ z, e2 r
2 h. u) j9 E3 t1 n) @9 R% Ato setup
- h2 W) v) e, o; n+ R" c8 Q
5 K$ d3 V, J1 O* D0 b/ y% oca
2 w2 K' P4 n, S! R1 [

; Y6 ^1 v7 n- Y$ @) linitialize-settings

' N& T/ ]# V9 N6 w  s1 `
9 P$ W, s' l6 u4 p2 Q4 Xcrt people [setup-turtles]

* X8 P# e6 ^1 s7 F4 u' Z! @5 p- ~( e& i
reset-timer

7 b+ H7 l. g0 V+ U' {, ^* P4 R5 T8 Q* i3 b3 v
poll-class

3 K7 y& x  ~5 [* f$ H( r2 n$ o5 B9 ^; }' Y0 p+ E% F5 J5 A7 P4 h) q) X1 [
setup-plots
' x9 L- ]! Z: j/ z% ?) U8 I1 w
' X) T6 c* i" G' `) f
do-plots

0 t7 ~4 m6 S4 y) p2 ^; I* ]& i; lend
( J) Q" q  i7 F3 x* U+ j! x
# ^, n3 O7 e+ S+ \) dto initialize-settings# j) y. X6 Z& t2 [" t  X8 r

; I. F8 \0 j7 Q0 k% a* `6 Fset global-reputation-list []

9 P* L: b, v8 K0 Z( D, I3 _* N! X  M& [2 Q0 Y( E1 q
set credibility-list n-values people [0.5]
4 d+ V3 v2 c! }" W

) p3 N+ A9 F! ~" B6 _set honest-service 0
& d3 R- B; @  a# Q2 Y' X

9 d" ^4 R. f1 ~; D9 yset unhonest-service 0

6 C. A# w% r1 t& M# P  c" f* `6 d
3 Z# l2 V( [; ]" a0 n% aset oscillation 0

' O) A: t0 \/ o$ s
& Z5 j2 i" Z$ l3 ~7 i7 Iset rand-dynamic 0

& j4 K& M5 j# i; Q% `0 T2 I9 qend& y4 z& M/ I) N$ ?
; d- D. a7 N0 N6 F
to setup-turtles 9 d9 T/ A7 k/ T# h7 U8 [
set shape "person"
0 t) i" a8 E5 Dsetxy random-xcor random-ycor
1 ?8 _! u# y9 q/ h' |set trade-record-one []; L& p9 R7 \. m9 A, h- w# G, w

" J# N6 s4 ?5 t# B  y1 S  Mset trade-record-all n-values people [(list (? + 1) 0 0)]
9 R* q0 H7 L* B3 X
; j6 K2 P/ A# A. Z) @
set trade-record-current []9 Z: A' Z( i; n8 f
set credibility-receive []
: v7 l4 o% A/ z! u3 o! fset local-reputation 0.5
9 X, J# L+ @/ a8 H: E9 \set neighbor-total 0% M) ?" U7 @  \5 g. G  b6 F- X+ j
set trade-times-total 0* i+ F" Y( E2 a- a% G. ~
set trade-money-total 07 l; j) T$ [; `3 j$ b! j
set customer nobody
7 x+ r3 n1 `$ [) }3 J7 F5 [7 Sset credibility-all n-values people [creat-credibility]
/ H- B7 T) C) Y  Tset credibility n-values people [-1]
/ ?6 p8 ~: g$ w" zget-color
4 x6 k( o) h* |  C1 s  w
5 |0 F6 t) E- s7 E4 X% v; L6 R) I
end6 I. f$ q/ J6 T+ n  ?; U
7 Y; N' t/ K+ a# Z9 X4 t, A
to-report creat-credibility
. q; x6 Q; K# a4 X8 vreport n-values people [0.5]4 X3 W; F7 u4 l$ L9 H0 M& ^8 k6 a
end7 L; C/ o& t& d- S. l

) r8 P; N5 \( c7 g+ |4 Cto setup-plots
( _; S# ^$ G+ o0 r% P' n( h& ]1 ?' k% x, W- u
set xmax 30
/ _, }0 K) p+ M( m' A% f) r6 ^0 W+ ^& }
. Z0 z4 k1 v6 J4 E7 h/ o: x7 C. L
set ymax 1.0
3 B9 u* w  S) d
) Q. {4 l8 ^) O8 p
clear-all-plots
  L" j% Y$ D& C
: B/ h+ j* m9 d- l9 v  E
setup-plot1
# v4 ?4 t/ k- a2 v2 J- `

) }% e2 Y  |9 ^6 Psetup-plot2

: k8 T5 l- x$ c. P! q- b2 V, j& h6 R! N* l. ^3 K$ ~2 f5 J
setup-plot3
1 F6 q; @; G  m8 O- p* }
end& R" g& o! _7 k+ V. }3 R- R
9 s" _: ?( j' d: N4 J1 {/ U
;;run time procedures0 C, G: w0 T' p5 h5 r" q9 d* X9 `

6 t/ V& _6 Y2 D) i  F' `3 s. O+ l6 Qto go
/ i! m& S. J8 a. x3 ~0 q4 l2 M9 {
% c* N; X& ?4 L  c# Yask turtles [do-business]

2 F' U$ ~: a, K8 Z7 i1 Tend
! m4 ]3 M, }4 ]: \3 J5 o* i) w4 Q0 O' ~
to do-business " s8 I" X  w# i" V: d0 m" l( T6 A9 b
5 K+ ~  I/ j  c/ n7 P

. W7 C: U! \  I) }" wrt random 360

, r4 i5 z0 F. m* p5 h: E7 b( |! t4 C' j% `
fd 1

! i- ]( t  r, m" H+ D) Q$ o* }/ y& B9 `' \' |( Z0 l
ifelse(other turtles-here != nobody)[

, m7 \3 ~! `) o+ C" M% S" I5 Z0 J- Z0 t5 M
set customer one-of other turtles-here
* M' e4 p0 z& I. F7 T- B
7 p( V0 F, `9 P# p) c
;; set [customer] of customer myself
* n; g7 h0 |$ j

/ l4 B  n$ i) g% N; U0 m2 sset [trade-record-one] of self item (([who] of customer) - 1)
" t' h- q' z% ]  R& P/ X, X[trade-record-all]of self( j/ u+ y0 S# q) ^( g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 \9 b: _* ~; W" s

! F1 G3 t$ }% {$ r7 Tset [trade-record-one] of customer item (([who] of self) - 1)
, ~. i  q$ G! W7 E& ][trade-record-all]of customer
9 t$ c9 b( i/ M# c4 P) W7 y

. t8 x7 P- }9 X' @1 Mset [trade-record-one-len] of self length [trade-record-one] of self

% U5 H& D0 c+ s. T/ K4 r
% F. ^9 _+ U' r( Lset trade-record-current( list (timer) (random money-upper-limit))
; O0 _/ V6 V. |* D
& `, p! o3 i$ F' S  p% f# g$ O
ask self [do-trust]
  s" g' A8 ]: S$ s# ^;;
先求ij的信任度3 C7 d! x* e4 n1 x

  P3 e; E6 s9 z6 `+ k% hif ([trust-ok] of self)
9 Q  }7 B! d% j! Y  V7 q;;
根据ij的信任度来决定是否与j进行交易[% a: k& u/ K9 B- s# e% |# ?0 e3 F1 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 O) q& S7 e5 L% B+ O9 G0 P1 o! @
! j8 f1 O# h4 Q  s" l1 z* D, R- _  O0 D[
- {0 k" V; I/ S1 L4 u
5 _0 b' X# X# u% {! S& g! b
do-trade

1 [& T, W2 N( h0 P4 @$ q6 G- ]7 [% V0 d
& e" E' t/ x5 R0 P: D0 tupdate-credibility-ijl

/ j% |- K2 h6 N8 h- {
  n# J: K( G( `- W8 R" [1 Supdate-credibility-list
2 m, A# f8 o; N5 `9 L7 D

, |/ x; S; x. y+ h* h$ q8 g; H! e% E
update-global-reputation-list
- L1 n6 r+ j# K# o

: ]* G) C- m5 T) }  \3 \poll-class
. J$ A3 {3 o& g* A

  Z4 f2 Y( I; N) G& ?3 [get-color

- Q) \# u( @1 A' C( S+ t9 ^% [  t  v$ I) ]8 @0 B
]]" K, J% [" g) T1 o

6 @$ t5 d. d4 t; t% B' N% l* A;;
如果所得的信任度满足条件,则进行交易5 V- }  ]0 q7 N9 c

4 o; T8 g% }7 Q7 H7 ]( F$ y. |[
' Z  C. n$ f* [+ H6 l/ q
3 u/ k6 C. |$ a' s7 n, Z
rt random 360
' l" J) \$ M; C# N* N1 h" h. X
: B+ U: U# W/ q/ \. A* i
fd 1
- P) D& d  i+ b0 j" N

# S3 Q8 {+ F" v% X* m]
. D( |5 J* [, y6 n: G( G
1 f- I1 _3 e$ G2 k+ T
end
, U% F; g5 Z0 S, ^: f3 D1 ^

! Q: v8 U2 H( _  `to do-trust
" {- f7 _7 R# D' T; q8 gset trust-ok False8 ?% r# D0 C! d& o) L- X7 Z

  l1 F( _1 u0 L, g+ d2 |
3 F' {/ O/ s) r( b7 ?/ S
let max-trade-times 0- Z* P( G8 u2 G1 E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 R' o  w9 \6 o4 m
let max-trade-money 0' g* y( [5 @/ [; N; Z5 X$ t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- @$ Y# _" i) t- dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- q5 _( i/ c  R3 M3 v2 r. u4 E
! v6 I% \+ ]9 \& ]2 z

$ |0 D' V1 `8 J# m3 {9 H' Wget-global-proportion
' Y, S8 f! F( n( \/ r; ulet trust-value) g; X$ G- b& ~, D+ N- Q$ S
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)
  w- E5 b' }5 S4 b
if(trust-value > trade-trust-value)
# Y9 F" N% g; i[set trust-ok true]
6 c! G* ?; I6 Wend
7 Z7 E) v" v7 W  j! [; K4 S) H: i
9 [# F. ^2 W$ eto get-global-proportion5 |3 f* z) D. E# f0 l7 ?3 J# N# d$ m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; b  [+ s( ]4 P; n) G3 y; d[set global-proportion 0]
9 u2 [9 W2 A' s  J# m# Q) F$ X[let i 0
9 O: L! C* ?6 k3 }8 ulet sum-money 0# Y, }) A5 S" m6 G: M4 l! H& k
while[ i < people]
% v6 F9 [) Q0 F& B6 M) x8 |4 p[1 Y, N5 L5 b) g& f
if( length (item i$ B6 s! i0 M- |: \! i" \
[trade-record-all] of customer) > 3 )
3 X9 {# f7 q! a; `7 u
[
( j" t& ]- S2 Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 m% p. M% E( b6 y3 `+ o: v, p: o
]
2 N& q6 r( k& X# b]) G: p' ], T* P( _8 {  P  V
let j 0% C) A% A9 [, g, j- k
let note 0  C( a/ c4 i( |0 [. \) Y
while[ j < people]7 c* v1 `7 F! K' @. t! ]
[( l* O! l* e7 h* v$ p  F# d9 o
if( length (item i0 J' C5 e/ B0 V& }& p* j
[trade-record-all] of customer) > 3 )

' t0 a) L6 M1 A1 q! x3 I6 _[
1 X" W& I0 P9 w, }- H% mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). e: \( D  g7 z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], z7 G, t; P8 O2 @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  ]( i  h, H5 _) e" n! Z8 w]
* D0 X& h' o0 M: K  u0 e/ p% C]) E- K  q) |( A! Y9 a
set global-proportion note4 t& r& W$ s, N( g& e: O
]7 g# P8 Q% \0 K
end! m4 }3 {( w$ U" Y6 \

* C7 ~+ f1 J& j' s# yto do-trade
. P4 m$ p8 m! `;;
这个过程实际上是给双方作出评价的过程% R0 Y* s$ w- J3 O9 k' x! T% ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* [  Q  I9 y) W4 M4 [) B$ Y& |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  C: q7 G3 p) p, N" d! Y: @
set trade-record-current lput(timer) trade-record-current
) Q1 [% t# t0 z6 `;;
评价时间
8 U9 u# k8 @+ a  b2 K3 H; uask myself [
/ }( S7 D9 z2 F" S& k5 g' iupdate-local-reputation
% k9 p/ N$ l/ z* F2 U5 aset trade-record-current lput([local-reputation] of myself) trade-record-current2 A+ G# ?: B+ ?* R- t5 H! ?; l
]5 Y  h: Q% u. G: ]" y3 X% L( g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 w* C' X/ C! J2 U, t- @
;;
将此次交易的记录加入到trade-record-one
7 _7 j& c5 [3 pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 l  |' o* H. ?let note (item 2 trade-record-current )' L9 A" s) h$ B! P& h$ q! M9 C) G
set trade-record-current
' D* u- `: w" y0 u* X& Z(replace-item 2 trade-record-current (item 3 trade-record-current))
3 w3 V, W+ N' }' W
set trade-record-current
! }2 C. _# C: [5 ^! D. J( K7 i(replace-item 3 trade-record-current note)  _0 T8 D7 h- @

6 L& e+ n7 v2 w% N* O1 ~
( W- }9 S( k7 q3 Y* s& c; e
ask customer [
, V: ?+ u' E+ n5 [3 eupdate-local-reputation1 m3 o  G! I/ _2 U/ y
set trade-record-current
- b" C7 Q, z- v* N+ d3 D% g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# u% S% ^* m* T0 P: v. b' g
]( k' {% A! R9 c! n) U

) _! @" W% q& e2 c6 {

( @3 z. O2 U1 X8 s" _, [* n7 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& p: Q7 |* |, @( P+ P

; G( ^# ?7 T4 u6 S4 rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" ]4 I9 F  D' Q) I/ w% \
;;
将此次交易的记录加入到customertrade-record-all2 q( {  j3 o- r
end
7 n, N) l: T7 |/ }. J1 P
; _) ]: I" V3 w" x: |6 `3 Zto update-local-reputation
& M% A' O9 s4 f8 Z! Oset [trade-record-one-len] of myself length [trade-record-one] of myself$ M$ G# [/ B. S& c
- z! c# h) k. p7 n% E* ]
1 B0 D# a/ |; e
;;if [trade-record-one-len] of myself > 3
  w, r" }# ]( m/ F1 Z" Y: q+ i+ D
update-neighbor-total$ `! B) y% r! s; T2 h+ Y: f+ S, ^$ E4 E
;;
更新邻居节点的数目,在此进行1 @/ m5 X1 u/ n0 w8 Z( d: g
let i 3  H$ C! W# B0 L1 ^5 K
let sum-time 0
& J/ a% M. W& ~! m5 T) M8 Pwhile[i < [trade-record-one-len] of myself], w& t/ k0 {. g' T% q' k  V
[
0 G* V' N+ P8 ]% s( t; `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 k+ w0 w! \! }$ h, Lset i( a# H8 o" M9 D% n/ Q! l
( i + 1)
* T" l- u! P* d0 g8 E4 ?
]
3 _) g1 ^9 m: E' alet j 3
, k! F- U3 a" c8 k! {, {% b# \let sum-money 0
- Z; g! \, |" q; C) \( W9 l1 Lwhile[j < [trade-record-one-len] of myself]3 w! w/ l& A7 j7 v& Q" K# w
[
: M: e: j1 R* r& J! g( o- oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ H: e; A( y/ l$ t# W5 o; H/ Hset j! d! v- j( v3 J! p; @! }% N
( j + 1)
  E; m9 E' y9 a8 N+ ^
]
7 p$ q  v( l/ |let k 3
" q* s' @* u4 xlet power 0
0 `3 Y% o" ]' P. clet local 03 h# o* u. f0 {. u1 W' }
while [k <[trade-record-one-len] of myself]. n  D7 @/ J7 p% {' M
[+ v$ ?1 g/ P; i& o7 S+ R9 L
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)
3 h, U- w6 M3 x' U6 uset k (k + 1)
+ F5 q$ N" _! @% F" Y- k]. t4 s2 f+ I9 a7 S1 m. B
set [local-reputation] of myself (local); l1 @7 R% T- i  j2 {  t  C
end
! G( l2 w  Z1 `1 x7 w$ }8 w. d: x6 ^3 U- I, i! b8 J+ Q1 n
to update-neighbor-total
3 ^  r7 q4 @, F
7 t8 p& w' o- s" Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 ~3 _  J: H7 f" t; `" s/ Q
3 S- X" E9 x3 X9 L4 ^4 D) a

. f- N+ D  L8 ~5 E7 {, F8 ~/ vend
" i  }; D& c0 p8 x
5 `& K8 f7 t4 |0 ]4 yto update-credibility-ijl
( o6 w! L& h4 i: {* d  x" W* Q
0 q0 e4 }  h4 d$ {4 A2 e) }" K;;
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: Z4 G# ]7 Q& V; i+ ]let l 0
8 {) J3 a0 B& W* u! T1 c3 Pwhile[ l < people ]
8 ~  |& b( c3 K0 {& ]7 k- r1 K;;
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
( |7 r! l7 F1 Z( V[& r3 H; v2 O3 Y5 |% A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 J. v: C1 C7 ]/ b% w
if (trade-record-one-j-l-len > 3)! c2 U' ~' ]5 J' d1 H
[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
8 P1 n$ S& O! |  }" Vlet i 3
/ Q- E, ]( c/ P7 Q- Z7 _2 J6 r0 A/ dlet sum-time 0
5 @4 m$ o3 }. Owhile[i < trade-record-one-len]6 T& R: U8 U# U/ {
[- j/ V3 i2 p2 z- t6 V7 a' |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ A  n% W8 W4 y2 l* T
set i
$ r0 r2 v8 o2 t9 ^  E  u; N( i + 1)

, F, T- |, r: X2 N; W, \]7 m- |- |2 Y) i1 [" k1 ?" `2 u
let credibility-i-j-l 06 n+ F: h( l% u1 W1 h6 Y5 ~
;;i
评价(jjl的评价)
3 R* k! W# m% R' V9 d4 flet j 3
2 q5 V8 F$ ?/ c2 J; @1 F+ C2 ylet k 48 _; a% I# R$ o: P$ j. F
while[j < trade-record-one-len]; s' K9 r# s* h$ R4 u
[* v3 _! R, q6 E$ g. A
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8 S4 t9 l! T* R! X! j6 ]
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)/ ?5 D5 e& L) p# W" s: l% J9 G# ]
set j' C& x# o8 v: q" \4 H, A
( j + 1)
6 |- x5 E) B2 P/ m. i/ Q# @
]& u7 z+ ]  \. t/ K5 L. ?
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 ))
7 s: y5 s+ X7 Q7 x8 z# r7 r5 x- F1 d- X6 p* [/ G( w

0 O  I2 E9 h, k7 E3 p' ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ A5 T& \* c' v9 t
;;
及时更新il的评价质量的评价9 i6 a2 E/ |( k3 U) U/ x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 M3 N, K) Q0 ]* Oset l (l + 1)! v  w  j) P+ n  W( n- K
]" p6 `, P; S. \. P, r( d
end
1 p4 p& l& j+ w, @6 }6 l
+ `: m- V, l3 S* W" @1 p& I. Gto update-credibility-list* ?6 n6 V- `  N2 H
let i 0( Q9 ~6 R/ y: y) Y1 N3 W/ D
while[i < people]
; U  c, z% q; O0 n7 Z" J$ x4 Z[
! U5 O& ^9 g& i6 ~let j 0
( ~* L+ g& m* h9 R; Blet note 0
/ g& V1 L* x8 G3 @3 w  d! tlet k 0
+ o. Y/ q- }/ x! r# U4 |;;
计作出过评价的邻居节点的数目
" ?0 V, ^* u4 ewhile[j < people]* {- S& B. Y% V
[
' l& X5 F9 ~6 z& g! L& Eif (item j( [credibility] of turtle (i + 1)) != -1)
9 k+ l: G2 p2 _0 E' p;;
判断是否给本turtle的评价质量做出过评价的节点6 h0 h' o) {. P8 n
[set note (note + item j ([credibility]of turtle (i + 1)))
; {$ b5 P! h: u; }) a- s( p5 d1 _/ ~;;*(exp (-(people - 2)))/(people - 2))]
3 N& G* x  @6 _! _# \3 ]
set k (k + 1)
/ H: d0 v# p% u5 r7 v]9 l2 g0 r# k, Y/ ]& I
set j (j + 1)
3 }/ U0 B. s& h) @/ p9 b# S]
: M9 b8 `5 [+ f; }set note (note *(exp (- (1 / k)))/ k)
' `; J/ s. E& p) F% pset credibility-list (replace-item i credibility-list note)' k6 a. y1 }9 z1 n' y
set i (i + 1); ?( G$ X% j) u, ~1 `1 B  W9 F
]
4 K4 p' x, V8 h4 C, wend2 K: d5 C! D- F7 l0 S# G/ m
9 q" S0 m# e/ Q2 L5 q) K5 t
to update-global-reputation-list
7 u/ T8 I4 L% a) ~1 hlet j 0
  ]. t( Q) I/ }# jwhile[j < people]5 y  V7 i9 W! a+ |8 U* k& ^
[1 }2 j3 T. X& G3 G
let new 0! k- V- N9 q) H( }) T) g7 l0 M. w
;;
暂存新的一个全局声誉# O- B8 {. e6 {5 Q( H+ I
let i 0
2 C5 a# Q$ q: @let sum-money 0* u% h8 ^: h/ J' B( s2 M2 U
let credibility-money 0- z# T9 h5 C. E  f$ R$ x
while [i < people]
5 Q& e0 P9 }0 i+ D[
: T$ T8 G/ V' j# Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 m* [7 d6 z4 M( X6 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) w$ v2 ^, o, y3 S; k- {
set i (i + 1): u  R  J4 G1 Y3 |3 c, g1 O
]2 G0 M- U0 l2 G
let k 0
) z% S  T1 G" o  G, o- ~* `: O3 Xlet new1 0
- v4 M5 Q9 g3 cwhile [k < people]
, N7 Y) ?: [9 R% [, a/ U+ ^[
; ~/ a) N( Q2 qset 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)% o7 |, q: n/ p; k; [8 N0 J
set k (k + 1)
- p( h. Y* d: B0 V* \]' \0 X- [8 W2 Q- W9 ~; Y' p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : v' B! V+ d% y3 ~/ |2 Y
set global-reputation-list (replace-item j global-reputation-list new)# W: W/ t9 v" ^+ C$ e9 c' c
set j (j + 1)+ f$ y' m! G, a3 T
]) z  e8 w& V! S. r% ]+ `
end4 R0 v8 P) t2 F$ V5 U

" E5 I7 t# I3 Y+ |" \; s$ ^; C
7 \$ V9 W8 T) y& }
6 T& J7 p  \0 D: O* J5 X5 b, ~to get-color
1 b: P1 L5 _2 M. O  U( o/ g& E" f$ M0 @- i- M8 J
set color blue
  \7 j0 J& Z  }3 b+ T
end
4 @- r$ `# ~7 I/ {6 r
' J% K. c; s& Q4 j$ R  Yto poll-class
% w0 x. _4 J& tend
. P9 o* n  ]  c
9 V7 C7 S2 A, S7 y1 Oto setup-plot1; C4 n- N0 ~) K# y
0 _: A5 [7 H' ?% M# n. ^
set-current-plot "Trends-of-Local-reputation"

5 x. [! |* j) J5 Z$ L( K% Y) i( D" q; ]
set-plot-x-range 0 xmax

1 `. y6 h+ \- t2 N/ [* J+ c0 t0 W; e, n
set-plot-y-range 0.0 ymax
( ~; g8 m$ P& h& b6 C! |- W
end, C$ @* X0 r" M: Q& j

3 u# N! @# P2 N6 @to setup-plot2$ N! [4 `3 v3 I

4 s, w6 o& Z. s$ t' a( _. j9 _set-current-plot "Trends-of-global-reputation"
0 y0 l/ Q3 J5 {5 \
1 L6 b* @  D+ \. l) e& r# h6 P
set-plot-x-range 0 xmax

* W5 Z  ~; y' }) q* ?" h! W" D( ^7 m! D' z7 A% [: B; T8 k" X7 f
set-plot-y-range 0.0 ymax

+ d) L$ v. h! P, J6 e/ f* zend( o3 x2 Y; a4 R5 [& F
  @+ D9 T% s  I- ~
to setup-plot3( _' g9 w. T+ q- R9 B
1 s4 R5 w- D2 F: s! A( |- W
set-current-plot "Trends-of-credibility"
' L. X) k4 V  G* j6 W: _! u

$ G$ P; A' N8 O; R& Fset-plot-x-range 0 xmax
$ o5 Z. E) ?4 Y: e8 O
( p8 u5 F6 L" m& \( l# ~) {
set-plot-y-range 0.0 ymax
+ l- c7 ~. r$ t0 O) L2 S" S
end) K; G) q8 v' c( K4 i
; ]- z5 r0 T/ b
to do-plots& _8 G3 P. X, m, y! ?
set-current-plot "Trends-of-Local-reputation"8 `/ A" G  p: d. }
set-current-plot-pen "Honest service"9 F0 Q/ w& @! q: H
end
1 C1 w: F7 I4 T6 H2 p, m/ o1 Q0 |, p% d$ s" g/ s0 G) E9 M! T6 N
[ 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.
; j5 G4 k& `/ Z7 [& K: H# ?" y
0 E) m: q9 t/ _+ ^8 z, ]- L9 \2 h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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