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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:
0 B; @5 q; N0 c4 {3 |2 b; Ito do-business 5 G. ~! ^0 [& ?
rt random 360- C2 S3 s! Q" c' f. I
fd 1
1 N4 ~2 F6 }1 r. Y0 H7 O' J ifelse(other turtles-here != nobody)[3 g+ A9 C, b2 R
   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 i8 w9 }7 [( E& P* o# h0 [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , q) V- x3 E7 r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ x  U1 ^7 [: f- z7 T- B) |4 W8 {- x   set [trade-record-one-len] of self length [trade-record-one] of self& P3 g1 ~& u- Q: C# ]/ j( M
   set trade-record-current( list (timer) (random money-upper-limit))
6 o6 M2 d$ i# A; H' ^: r. b5 D6 `: W' V! o7 v& {
问题的提示如下:! o' F5 P9 P# o2 R3 G
  K& t% ?  t, [# n$ `! Y
error while turtle 50 running OF in procedure DO-BUSINESS
* g7 L" S  ~$ P. r) s/ d4 ^  called by procedure GO
- P9 Y1 E# Y. w# Y. b* iOF expected input to be a turtle agentset or turtle but got NOBODY instead.% B5 u* H" l8 \$ _
(halted running of go)7 G9 g/ o) a/ v6 x7 U/ v2 G3 W
2 S0 v: m5 g) r2 r3 [
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~~
3 b* E% F. J' O2 M5 ~1 Q2 h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/ m( H- E  h+ D  W: L
globals[
2 e) K* U7 `( Y! f0 h) g: Y- v" Rxmax. d$ Y! y& |0 W
ymax
8 I, B# t( _, D( I& C# P7 x- }. [8 zglobal-reputation-list9 _; m8 K6 e! h
7 ^* G2 r0 X  c* k. E% b
;;
每一个turtle的全局声誉都存在此LIST
8 G4 N  s9 ]% C  I) y2 U" M* Ucredibility-list
% a8 W, J: Q$ n% O% R" ~;;
每一个turtle的评价可信度% w5 v+ f- ~1 N$ J
honest-service
! ~  y. Q  F' `( b/ s$ G# vunhonest-service
& F6 L+ i# I* Coscillation
5 g( I$ @8 J7 a: z8 `+ e8 rrand-dynamic
. a1 M$ u5 o* U! w]4 q+ W; _% K2 ~" q
+ Z9 t  F" O# v2 S( W
turtles-own[
- ?- w3 Q0 R, x# Vtrade-record-all
& I# x! M' G; O+ y/ g. j;;a list of lists,
trade-record-one组成
6 ?; P1 g9 b+ Ntrade-record-one
$ S/ v( o" o% b! m6 D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- R9 H8 ]1 ^9 o/ N! x/ O8 X; k  m, c+ U
;;[
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]]0 C* Q# I8 o& Q0 f$ T* Z: 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]
0 T6 ~* D! Z7 Y- _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
4 ]$ N- V3 N2 {7 S7 w8 H$ R! l, Vneighbor-total
' y7 a2 q/ T! q4 K;;
记录该turtle的邻居节点的数目  m6 z; g5 \: F! ?) c
trade-time
9 d( r6 T7 d2 x, x- O0 t. t;;
当前发生交易的turtle的交易时间" a6 n# u# |7 ]
appraise-give! v3 i  s1 V& U! Y: z! d$ W2 Q
;;
当前发生交易时给出的评价" o  P: H3 M0 v( S8 M2 s  c0 o+ h
appraise-receive2 e- L7 u8 U1 `! }5 k( ]
;;
当前发生交易时收到的评价4 w% v3 X+ b, j% m# K% h- x- L) v
appraise-time
5 L( G! H' a9 J! Y- Q3 S6 s; p;;
当前发生交易时的评价时间
! n, V; s6 R; a, y% Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, V3 N% `8 h6 V( }' {# ttrade-times-total: y+ {, f, k# d( N  D6 K
;;
与当前turtle的交易总次数
* i3 ^% a; h5 f: w" Gtrade-money-total, l* [! ^0 e( h; O+ D0 j
;;
与当前turtle的交易总金额4 `( q2 ?6 f+ e) N# F6 _# c
local-reputation/ h: z2 R8 K" F
global-reputation6 [2 C" }  n3 J4 |; Y6 B( F
credibility
1 r" s, @4 I: O: ~5 c;;
评价可信度,每次交易后都需要更新
6 _, j# ^3 I( V& Fcredibility-all
  g! O' Z" d/ e;;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
2 {) y# \+ D) @* e6 l! j2 {
$ i( p! G" a, [;;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
: k, ]7 e1 t. k8 b" Q! Hcredibility-one
$ r8 ?& `2 B" D3 I. f1 D- z4 j;;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% M0 }( S3 k' q# o$ m5 A. r4 I4 B
global-proportion
( P4 |1 j8 E& Y# ycustomer3 j3 h) I* b1 w; u
customer-no6 w- I8 n4 N0 t! {  e) l
trust-ok
( Z6 _1 e/ U' [trade-record-one-len;;trade-record-one的长度9 R) m+ v/ }8 S' Y
]
$ H6 e( M9 \+ W7 c/ l; @6 l9 }) l- y  N$ F" m  v
;;setup procedure
1 I" Y6 ~# l2 @$ t" J9 l; s' Z- j7 `, v& s; ~2 f
to setup
: l% Y1 v2 o  L5 x! i
. f& r6 O: X$ I: }+ e2 c" mca

% |& d; X% P- E8 C- f5 m  T
2 R' W% T, r5 t4 y% d, {) W1 |+ cinitialize-settings
/ z1 Q4 G1 n" Z! _) E
8 b0 x& F4 z* @" O. z& f1 H( n
crt people [setup-turtles]

  c' t: d+ ~. G8 o! r$ j- Q" L, I: [9 R
reset-timer
' T( \4 n+ D+ b" c7 {9 ^

' \" y: J6 |; G8 ^, spoll-class

4 T, I& h3 T" J, O
, v& u7 g( O2 ?) K' E) H: Bsetup-plots
3 w+ H" l) B- ?: ]8 c" u
/ ?0 C; `# j" I' m+ z$ c# c  M
do-plots

/ }; b7 e6 d4 zend
4 M$ m6 h' ]3 T% ~  W9 B+ i6 G, O4 B9 \8 y3 Z
to initialize-settings/ @' p  c0 A/ K9 p" _% x- j

. s8 F2 \% o3 l* v/ }& Xset global-reputation-list []

/ I# _/ w- G2 O) Z
2 u( t/ N2 y. r+ [/ W8 eset credibility-list n-values people [0.5]

( G9 n1 g9 l  Z1 p  A  d; p: s4 T) e* y. z- K5 V* L# {, G! Z8 c
set honest-service 0

: ^; X' e3 t. f, @2 [$ z9 n  v% w+ r  u/ ~9 H) }
set unhonest-service 0
% ?: }3 d6 S1 @  }5 A, N
. T" o* F% V/ h6 b
set oscillation 0
+ b+ C5 T8 M8 ~! O7 _5 m
# F4 ~: r' |& }
set rand-dynamic 0
. L- ]2 k, `: j3 R
end
. T. n+ i/ v. i9 E( A; z8 X7 B4 x/ z4 o
to setup-turtles 8 g6 u# W) m8 v& K
set shape "person"
7 I" q! ?& J, z9 d! Rsetxy random-xcor random-ycor
' |' C) R% ^4 R3 N6 l2 a* vset trade-record-one []
% Q/ x7 {: d# r: D4 ~- `
  [  N' W" L* U) B0 Q4 e" i- ^
set trade-record-all n-values people [(list (? + 1) 0 0)] & y2 H0 C* o- s$ b5 |( l( a% p( A

* N5 |+ H$ }2 a# R- [set trade-record-current []- a  ]- Z5 L  y- y9 U+ p& W
set credibility-receive []
3 E3 N& h4 B) ]/ u5 |$ kset local-reputation 0.5
; v1 A1 [7 Q9 F* H9 x+ gset neighbor-total 07 K9 r! |( O. g: Q) w+ ~2 U2 l
set trade-times-total 0
: _% F6 }+ j, b" Y$ P" Jset trade-money-total 0
! Z# t- J5 C" h0 o* ]& a( V2 F! ]2 Lset customer nobody
* ^: B; o4 r, e, `6 ?: zset credibility-all n-values people [creat-credibility]
! w, |5 C3 o/ K: E! Bset credibility n-values people [-1]
- C2 ]% o8 F2 ?9 cget-color$ n9 F8 u; ]" N
% H# z3 V2 _3 ~9 B0 ?; h
end
2 h8 |2 d1 s7 i5 Z: k. D
& [. w6 e8 u6 q3 _7 \0 Bto-report creat-credibility# S5 L. c5 r- \: C" ]2 J
report n-values people [0.5]9 D  w* Y4 I& r  \/ l9 Q& m& N
end9 y7 K1 S* H- _& h% a7 T+ V+ Y+ q
; R) m9 ?. u) s4 S0 {% @  W
to setup-plots
2 F7 W& F- H1 w4 g/ M
; |4 T1 [0 N! H, w- a5 ~: _& q. C. J9 S/ [set xmax 30
: H+ U4 x1 {) |5 S, O9 P5 l3 Q# A

; \5 C7 Q5 v/ B( S$ ~set ymax 1.0
- M3 Z- I7 ^# F) y
" k. A# |3 A7 }" g
clear-all-plots

8 Z" `+ M# `1 T
/ {4 D, Y4 S  J8 Y3 l: F) c' Psetup-plot1

7 W, e% Z, j9 j: F7 `$ \1 R& G, s6 v6 q2 F
setup-plot2

* t2 Y4 p# P; B7 t: G% I" D7 p4 M9 b2 {3 Y' f9 l
setup-plot3
$ q( l2 k4 a5 c9 e
end9 z0 n2 p- Z" q9 o! \  ^# U( \

  @" W9 Y# ?% A  ~- s- Y;;run time procedures
' Q4 N- N  }: g0 W& z' u8 E! T& P& t# X6 A! f
to go
1 k# |1 b" x0 `( |4 n+ b( V
# A, C& x" ?1 Y% z" o% sask turtles [do-business]

6 t* M+ M& Q& d" h& Send+ |; g! O) Y1 N. Y, w
+ _3 M$ u# }1 A
to do-business 5 c* K$ E& J" j( Z
1 |6 q1 w4 q4 S9 g

' e# _, P  S" Q$ C5 f9 y. Ort random 360
7 }# \9 O' _6 N2 I) ]* x0 d! V( X
, p* c. Z& U0 z9 K- i6 L/ W# g) N7 g
fd 1
2 J9 B: @9 {+ k2 J2 i

! B/ ]0 T6 a' A. `. [ifelse(other turtles-here != nobody)[

" r" P# ?6 ^8 u. Y0 B0 ~4 G1 y; H& N
# L# |$ u/ ?( d8 C3 Rset customer one-of other turtles-here
- B' T- q2 A. ]( s7 q' p6 _- E- Q7 h

' J. [9 c: t8 X, j% B2 k;; set [customer] of customer myself

+ h7 K5 b$ D# h  p% T) e+ p
) F9 A2 P& `& t5 D* iset [trade-record-one] of self item (([who] of customer) - 1)
% D; H. Z+ _5 W( E[trade-record-all]of self
( {( x4 p8 J. M# {  e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* U  Z8 K; d6 d/ r, G4 q( i

; Z8 H, C- ^0 i4 @- {set [trade-record-one] of customer item (([who] of self) - 1)- }# m) A, [) z, `& k' D
[trade-record-all]of customer
9 M: n7 H4 V" ^, R& l/ {9 d
! R4 y( M& Z6 @$ M: K* G# q- j# o
set [trade-record-one-len] of self length [trade-record-one] of self

: L7 X6 ^# m5 C
7 g5 X: e/ L, S3 k4 W# S: N$ `set trade-record-current( list (timer) (random money-upper-limit))

$ ~9 V; [8 ^0 Z" k
; d$ e4 B6 s" V* D" K7 n5 oask self [do-trust]
% h: i# u* ?9 y( L7 ]! S# s; u;;
先求ij的信任度* A' [" |4 o3 Q- u
7 e5 I6 ?& v5 t- T) m) A$ I
if ([trust-ok] of self)# h2 f& I3 {6 g
;;
根据ij的信任度来决定是否与j进行交易[; t9 C$ [1 y9 y( R4 `$ V' _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& ^" A) p# c, T6 ?
6 c# `+ F/ S( z, d2 ^7 X6 a6 K[
& z6 c. }' x# Y; g8 N6 u  b

; {, s1 V/ i9 _6 P4 q4 \- m) c+ hdo-trade

1 X7 e' a# u. l) Y# R4 M, h% q; L" A0 ^9 B- t
update-credibility-ijl
2 [3 N+ i9 ], m. \

, V- b9 K- n( vupdate-credibility-list
2 u* m, i: P# l! f0 z! m" g/ p* y
9 J  Y' E* Z' I& O% ^8 ~

" P% {8 ?. s/ {) o- m# U  A( p/ Fupdate-global-reputation-list

+ J" m. \) s; W! I, T
! N8 V/ ?  p9 E1 V5 z1 ?poll-class
1 B3 u6 F4 D6 n
% \* p3 w2 V5 y' \9 N1 _4 J# x8 D) w
get-color

( r& B. [' ]/ r# r: [) o! ?1 W
( K) w; M& b  v- g$ H' []]+ d! D) O5 s, U7 [/ F

5 r8 |8 }# J+ X1 o) Q;;
如果所得的信任度满足条件,则进行交易% L- F1 Y/ g% R6 ~2 T9 p4 n

& G& ~2 U# F$ y. ^$ R6 u[
! p9 `; q0 n  Z) C. d

: A9 _8 d5 V. M% z8 o: W7 I  xrt random 360
3 c1 V, }7 j+ c: X. [+ t# V5 ?
9 J8 j1 T6 L" Y0 {. o* x$ w9 y
fd 1
) u. Z* U) W& I  l$ `
! y! m4 T" a* G: @7 [; B
]
- l+ \9 q; l" f5 C
% d* g  M8 c! @( @, \
end

& t! x& `4 |! c
4 T, r6 E+ F9 tto do-trust & _/ R9 D/ X3 _+ `) P* x
set trust-ok False, _. S# s+ h6 Z- w1 I) V

/ S3 e$ U* }8 |/ l! k) s1 n- y4 X

0 P. P4 x3 j/ h8 f6 ~let max-trade-times 06 o9 d6 n2 B" V$ G3 O
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ D+ P  i1 x: W% q, N; }+ d, R: k) _
let max-trade-money 0! O3 R; W) ~6 k" q. G4 V" u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 `2 z# i4 y+ d% T; y5 Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 O" F- j- e9 t+ b& ?% ?
/ s7 u4 X+ V! c2 L7 `$ \
7 e* b5 `6 K6 }" _2 [6 N
get-global-proportion
7 k$ t9 d; |% t, w6 _1 qlet trust-value  V7 d/ t+ i% d# R# d
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)

. R- Y' d' y7 A6 w: Vif(trust-value > trade-trust-value); o7 {9 d9 v. U) {5 t, f( {
[set trust-ok true], S( R4 {$ U; U; x! H# ^
end
3 w9 f* B' \& x, q. O5 _5 R: P0 P$ B9 a# A2 Z! ]2 k
to get-global-proportion
: p& x0 b7 u$ _8 y  [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- {$ c& X1 M6 f, S" \% O% P; R[set global-proportion 0]  i5 H6 M3 H1 a1 k  k6 ]9 O% z! S3 I
[let i 0
5 I: Y9 o5 ~- d+ l. _let sum-money 0; t. S! Z2 [7 C. k" z
while[ i < people]
1 ~! [5 J( d8 v[
! v1 ], T0 b6 Mif( length (item i* q0 G; m! u/ i! |& ]; f4 i
[trade-record-all] of customer) > 3 )
+ |5 P, I( N% y. |/ @% {+ n3 [
[6 O! T- w% S( u# c6 h% {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  T! E% I) z( O% I5 Z]
" N: V. K: Q5 ]# u* i0 c  z]
( x% {1 ?3 F) Ulet j 0' b# I2 t0 u. ~+ u4 a6 x) d: n7 `
let note 0+ H! u& U. L5 l& R2 U8 y6 a1 H
while[ j < people]
6 c7 r6 h& \7 A7 L[
3 S8 c! J! A$ ?6 x6 M! K. [0 Wif( length (item i
& G# w8 ^! V) \3 Z' ]1 j5 E[trade-record-all] of customer) > 3 )
& ]6 n7 e- s& E/ w, A
[, z5 G7 U9 Y; [5 h8 g4 R, A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# _* v; \, k" B% P" R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  L; ?: {* O# Z- v5 ]$ U9 ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' F, @! B8 ]8 G- M' a( }+ E' j9 A! p]' s# `6 \  F  M  N7 R6 z
]# y4 J1 ?9 ?9 p- F$ w4 k5 x% ^
set global-proportion note& S: |% ^' l/ b0 D$ u3 Y
]
# T1 R0 H2 o% z9 ~. @) R6 q4 B0 Jend
+ t% c/ \% Q0 U
9 X# K# t+ T6 L8 R2 }: Y& ito do-trade  A# u1 _* [8 M  t/ N8 ?
;;
这个过程实际上是给双方作出评价的过程3 K0 `( B6 u4 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 X4 t. K2 ^/ B  c% J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 Y& C+ a) v, [
set trade-record-current lput(timer) trade-record-current
  }+ I& F9 c9 b; G;;
评价时间7 a5 U8 [  g+ b8 N' B2 e- X! m
ask myself [* u/ Z. ^/ |3 a+ k: }3 z* r# h  k
update-local-reputation7 W0 G  v( V0 u( C. J8 K4 w% ]6 v
set trade-record-current lput([local-reputation] of myself) trade-record-current' M/ ^% X' O! L3 L4 b/ W" }; u8 L
]8 ^8 |4 |, l( V6 v& }
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* r) V# }" E1 H' S1 o" ~;;
将此次交易的记录加入到trade-record-one! m" n  Q) l2 Z: n) ]2 R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 Y/ x- w) Z& v* Mlet note (item 2 trade-record-current )
# q+ p6 h* r4 s! e2 Pset trade-record-current
8 T8 I0 J: g$ a4 l7 w6 ~% {(replace-item 2 trade-record-current (item 3 trade-record-current))

; u# v2 a( V8 n* d- Dset trade-record-current, r+ g3 N, P" q& {
(replace-item 3 trade-record-current note)7 t2 u& B- I+ ]3 {0 y

: z! g/ l- F! [6 R6 J! p6 B

+ Q3 F  w! e( D4 N8 }ask customer [) \6 z# g. h7 q8 I( i6 c) h
update-local-reputation# q" R7 s8 c7 u" q$ B/ G' h0 C1 C
set trade-record-current
* E/ \3 n2 ^, X' _5 D3 H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% t) G& i8 t! h) T- []; t0 p. T& i2 A3 z5 f$ K8 w2 [4 v

4 A) O6 e/ R- c, r& N' Z5 K0 C

5 w  `9 X- p' n' @: S  d! uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* _% i! ?8 r+ ~8 k( P; t

+ f2 t# b# K, c4 o  O7 n% C2 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 S3 P6 B5 T9 X3 p3 ?2 V3 A% u5 n
;;
将此次交易的记录加入到customertrade-record-all6 c- Q( a& E8 S! m
end
+ f7 E& c( E! U* \% t) G
; V- a2 [8 ~+ g/ [. I9 Mto update-local-reputation; h& U: C3 r- t" s6 ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 \0 [, ]1 ^+ c. T: \; Q& D0 J( m2 @

# r8 F4 L) L  p( o# E0 k$ q, _- c;;if [trade-record-one-len] of myself > 3
& t( E6 g0 a( {
update-neighbor-total0 p$ i5 l' q2 @  O2 Z
;;
更新邻居节点的数目,在此进行9 c5 G4 i+ l; D$ v. Y8 `
let i 33 t$ m# n+ A' T: Y  G
let sum-time 03 `1 o  t0 c# J
while[i < [trade-record-one-len] of myself]. {  K% {" m2 e. m
[
5 ?* @" E: |- r" Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# U' V5 `/ Z" T8 [4 O0 C9 qset i
% ?( O" o! i' t* Y, {5 N' ?. z( i + 1)

$ z& E! C; T, h$ w  r3 F]
! f, h. i' v$ Plet j 37 t, [0 I" B; X, O+ v
let sum-money 0
( ]. x6 C) q  ewhile[j < [trade-record-one-len] of myself]
& o* d6 S/ r& Y' k% G& ^* B, @$ b[
" V) ?, l$ S4 u7 ^  \3 l' rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 ~$ K) c( O. R+ {" Qset j
' T- W  W" g) {& _0 y, c( j + 1)
: p3 u3 {/ M( H0 Y2 _# }% ~
]
$ V& b$ e% r5 ~) L# \) |let k 39 r1 p; e! {/ f: d# B# M5 @& |
let power 0
( l0 m) k) W8 ^+ a, f8 H/ }6 glet local 0
4 _$ U+ J& s% J' K# {/ a4 `, iwhile [k <[trade-record-one-len] of myself]- M+ _, c8 H3 T. b
[* n/ P7 y  [8 U9 C  w
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)
/ z$ \- L5 m' ^8 c( Mset k (k + 1)) |/ ]1 B, X- |& C  ~
]
1 y" l- w# s/ p( O4 xset [local-reputation] of myself (local)
5 J+ ]9 G9 n, aend2 `1 P3 G0 z  m, W% M, G" O' V

+ ]/ _9 y' K+ {8 x3 x9 K; |" {to update-neighbor-total3 V2 z9 N$ M2 m3 n7 ]9 G
1 w9 n% s: p2 {0 W! Z& u2 l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 L" h7 R6 m5 @; p- y! P4 B1 f$ o5 D

9 h  @# q) a' S  k, y+ eend
: \5 g8 h# M* m' [* y- j% I& |, o$ I
to update-credibility-ijl
! }4 J+ q1 s/ Q8 F1 V& d4 ]
4 o0 k( j8 b" L/ A% };;
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。
0 i6 n! L4 |5 y( g' O6 n$ clet l 0
# Y! `) f- f7 C& k- Twhile[ l < people ]% U* E- P! p8 f" y
;;
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6 z) i: J! w3 ?& J4 w
[( t/ }7 h: p( d1 M& o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- Y& l# a6 H1 P0 {6 E4 u0 |
if (trade-record-one-j-l-len > 3)
( k* _6 M! }/ N. M[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
; F0 G6 o5 A/ `. u4 Q( x% e+ M& }let i 3( s. l$ f2 }7 t5 A' _
let sum-time 0' b, k1 f% G5 I3 n
while[i < trade-record-one-len]1 y( Z3 a  B8 z" n9 |. F0 U: L
[( @4 G1 Y" d" s( }. {9 D, e3 N1 R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! T- r( {1 s0 L  [2 F8 }set i
. F4 k/ P  @, Y2 t9 u( i + 1)
: z, e" T" B4 M
]9 y7 i6 W) z: S  {$ Z
let credibility-i-j-l 0. d& c3 y' K' V2 `8 w; x5 S
;;i
评价(jjl的评价)7 {% t* _1 E; y) w+ A
let j 36 r* N; ^2 W) @
let k 4
, M/ D% w2 j8 @9 I" a' [. wwhile[j < trade-record-one-len]
$ c' I9 V% ~( [4 i[8 K9 V* ?# I; G7 h) y9 ?6 C
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
& \# H4 U' a3 X& B7 r! kset 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)( Z, N2 f" x  a% Z
set j. R* y. q+ b! T7 c
( j + 1)

8 R. K; F+ i. O4 Y9 v3 B- m]
: K" W3 z6 b) t3 I% 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 ))
9 f% o8 T+ s8 }5 z5 v1 p
$ ^4 ~; `0 Z3 J

1 H5 P# M7 t$ G8 |  E6 dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 t2 c2 w9 M- \  K( W/ Z
;;
及时更新il的评价质量的评价
! _) {6 e3 |# _% n; M' bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. K  k- Y& g$ S& Q
set l (l + 1)6 v  X( d- L4 Q( {/ a( C
]
7 i9 }* t5 i+ W  n0 m8 y9 y/ Z2 kend
% t4 O6 i8 a# _4 e" u$ o3 B) l! j1 e- U' `& M
to update-credibility-list! n* F+ K$ N- z8 C4 w  a( U
let i 0
3 L! `( O# w. P; n/ P2 twhile[i < people]
. ^+ i& o; `3 y& B% ~[4 K) e; C2 j8 q& u1 ]. d5 r
let j 0- s. A6 C1 A( C8 J. Q
let note 0  u$ `6 d0 `, I1 c6 r- W# X4 l) ^
let k 0+ `6 o. m( q3 k+ F
;;
计作出过评价的邻居节点的数目
! U3 a% u1 A( ^/ W2 J9 _while[j < people]% i5 \( I# _0 q! K- l" [- p% |
[# ?1 ]" L& _: D- ~) W$ y
if (item j( [credibility] of turtle (i + 1)) != -1)
, n: i2 p9 K- b8 t$ H; D;;
判断是否给本turtle的评价质量做出过评价的节点
1 u8 i/ R5 T! `8 ~! E) E6 l, M[set note (note + item j ([credibility]of turtle (i + 1)))+ ^5 U4 o3 ]# X( O5 B; {
;;*(exp (-(people - 2)))/(people - 2))]
: I3 @1 _, l  |- Z: L9 a
set k (k + 1)
& K: Y. Z3 r/ p6 B+ []
! P% q" B" B7 w& Eset j (j + 1)
$ |- A; S$ ~7 r! a/ w( A9 k7 d( B% g]
. G2 @3 L4 f! C8 G% i8 L/ p/ qset note (note *(exp (- (1 / k)))/ k)
* w4 g% [! X5 X7 V- nset credibility-list (replace-item i credibility-list note)
2 K1 R3 e5 \) ]0 H# @  i- N+ wset i (i + 1)
% b* a4 b! J  K: v]
8 Q& q  O$ E& e5 z8 g& d  Y- y$ Bend# ]+ u4 Z7 |4 f% V7 v3 a7 n
- Q. z) L6 K2 y: [+ `$ H( I6 F5 q9 ~
to update-global-reputation-list
+ z* g: t; k) k" h9 Y/ k  F5 @let j 04 R) P1 r7 `, ?) G! t  s9 c
while[j < people]8 N" c0 A: E0 h$ e9 [
[
- k* U# G9 S9 ]* I: alet new 0; A. }* b/ N4 {5 i! s# e
;;
暂存新的一个全局声誉) b- H3 O  d: j% a6 }( Y
let i 0! U. t3 i# C; }2 [6 g# ?4 c9 w
let sum-money 0) a' D# q5 Q/ |! C: M- {1 f
let credibility-money 0
, a. c9 f; Y( U7 U2 b, f: ywhile [i < people]
  N% P! Z% E1 f( z0 T/ W[; ?8 o0 ^3 I* f9 D7 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 h8 s; ~  z$ }! |: xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 N! q4 R$ d7 [' v' c. m, @
set i (i + 1)
$ a( s2 N7 @2 J# b# r) g6 O]9 |9 A3 v- x7 @, O; \% s; Y5 G
let k 0
# R( a! b  Y5 P$ M2 S3 ~+ Xlet new1 0( L+ p4 Z& |- Z+ I  c- u
while [k < people]
7 N# [) q  l9 }% h( z; \+ B[
2 t0 r7 |) O7 Mset 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 H6 i! Y! _( x, ?* e# }
set k (k + 1)( e7 e& }7 ]4 R$ l$ V
]1 f8 @( ~4 Y5 I7 E; U( }# B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 s( a8 `& B' h1 iset global-reputation-list (replace-item j global-reputation-list new)' P2 P$ T% K$ ]" p0 v0 n# i; @
set j (j + 1); c' Q+ z7 z4 l2 L; P& t
]' ^1 N# ]# J/ M
end6 Y) P& m6 B: M% S* K

+ T8 f- j  z' ]- Y" h
% k5 Q5 `+ q( U9 r/ x- q
  B7 ]% s" Y& C& O0 H6 a" U- Tto get-color
8 ^9 I" x  |5 Z) ]
* z4 R/ ^* |& ^: n7 rset color blue

: h7 v$ O0 |# E* Y4 @) |. |" hend" v; Y$ E: u# b. N

" ]+ i& [5 y6 R$ P+ w3 \to poll-class1 q( L; ?0 G1 o/ [$ d' ~' ^( \
end
" Z3 {3 V9 K; N* b# K9 k( @5 B3 \  P
to setup-plot1
( J# H- W, d; O* H  l' l3 D8 |) @7 J/ ]. |9 g! \2 ?# T8 ^
set-current-plot "Trends-of-Local-reputation"

# D6 v5 ]2 n5 |+ ~" y# U. s
7 S6 z; J; h' S  N% pset-plot-x-range 0 xmax

- |& `- O( K4 Y& x
# s( ]9 F% I9 Q2 L  M+ Qset-plot-y-range 0.0 ymax
1 K; u/ b* g" r5 f: Z
end* Q# t- C/ f; X9 ]. o' d
" T4 n" S3 I. R- m7 b- J. B& }/ t
to setup-plot2
, m5 D0 n/ z1 g5 l( z7 q  q% ]  Z0 O4 S# r( \4 K
set-current-plot "Trends-of-global-reputation"
1 u' V0 H8 E# ?+ F5 `

0 r1 M: G, ~/ M3 `set-plot-x-range 0 xmax

& D9 a. Z5 A# F8 p
/ T3 G: a& k9 ?* ^9 [set-plot-y-range 0.0 ymax

" k0 F2 M) W, J  d/ u- Z8 g- j" g3 X  Hend: d$ {6 x: ?0 g+ R) y
8 @5 F, D& R, G# A$ N# ?( t! o7 V. n. b" W
to setup-plot3
# l% l: O- H1 s) {7 j/ t  D) [7 |$ }+ u1 ^6 `8 _% V' {/ ~6 p+ ~7 V
set-current-plot "Trends-of-credibility"
2 R, u" b* C) J1 I

% i6 n+ J1 F1 ^! a) ], `" @# Qset-plot-x-range 0 xmax
9 y1 k  V9 @7 j
/ n1 d  p: u' D3 f- W$ i7 S; Q* E: m7 R
set-plot-y-range 0.0 ymax

2 M0 ^/ q6 u  a8 M- J# Xend
4 J8 a5 D' j8 T8 r! \
  t, T7 g# h# l8 f. Mto do-plots- ~; Z- s# b+ a: S/ U; Y* ~8 {9 l
set-current-plot "Trends-of-Local-reputation"
& U; N1 U' W) f' _1 Jset-current-plot-pen "Honest service"
" I+ c& P+ [! s8 n+ Dend
& a% X4 `6 O* }
1 Y; N7 ]$ S1 @[ 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.
+ t# ]! K# h: U. J  M8 ?# M( \
) n, y0 z7 n* r1 M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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