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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:  t8 z$ k' V" n$ y
to do-business 6 X. b0 L! T6 F: p! [" C( ^
rt random 3606 B. P8 ?/ P/ }2 u; w
fd 1
2 U6 B8 Y% n' y  Q6 w" W ifelse(other turtles-here != nobody)[
& g% z! Q3 h8 X6 G' g" x% \7 s   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.
9 n1 k0 P9 _! h3 `1 g4 s) n8 R   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 n: N( @$ h! Q! r9 M9 w
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 M+ [& ~: i  w  J# t- C   set [trade-record-one-len] of self length [trade-record-one] of self+ ^/ T2 Y) X- L1 }+ k: N3 t9 w& M. R
   set trade-record-current( list (timer) (random money-upper-limit))
; \9 G( A& w0 s
1 Z* s  |1 M5 m8 r/ \  }( j7 B( U问题的提示如下:
9 a; j6 [* g: Y  P; m5 q5 U4 j7 Q7 v, [/ z5 O
error while turtle 50 running OF in procedure DO-BUSINESS7 `6 u7 q+ \. j1 `7 K. P
  called by procedure GO' A, L+ \$ O  E! E% k) l
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% z% L! s1 B, a/ F% M; {% f( d
(halted running of go), s$ k( J* {- K% @' O; L

- T' J( c1 R$ d9 r1 v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~~
8 j; c4 A  ~' y) e0 B; m+ P3 `7 Q9 |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  r( x! a2 v5 c& r! N7 W  k" }0 n
globals[& B, t8 T2 e$ ~
xmax" r: k; B1 H" W
ymax; r9 Y" r9 \: P; Q2 d
global-reputation-list- e" e2 A/ a: M) o6 V% u- i
+ g$ J! B2 `5 a' ]( e  H
;;
每一个turtle的全局声誉都存在此LIST
) {! u$ U- z6 O5 I7 V4 gcredibility-list0 E# Z; v% W9 n" K& I" b. U
;;
每一个turtle的评价可信度
6 P* r# [+ n  whonest-service+ n  P5 Z/ q" M! v5 m5 T* m
unhonest-service
( R9 F1 H" B1 Q& X: M" ^3 ~' r3 p+ Poscillation
7 B# y! O: u; j8 Erand-dynamic
0 r# `0 G3 }  a" U4 [: @]
* u1 E/ X# H3 ?4 |. z4 s1 L, y7 m/ Z9 b( Z: {1 F" u- l
turtles-own[8 r( ?. z8 S$ I6 `, P1 x5 J
trade-record-all
% P+ N% q1 p( h1 j;;a list of lists,
trade-record-one组成
& n' |/ c. M+ Y( b5 r" v0 Mtrade-record-one3 S6 f* L- [4 t6 w; ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) M" w$ Z9 z! @1 x
8 F7 A9 ]# n( B
;;[
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]]! A& O* s: G: a  k  k0 D. J# M1 Z
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], n" \( A, g* a" k& b8 J
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list5 x2 U8 ^5 k+ n: T& ?! x2 r3 q
neighbor-total/ L- K( @$ X  @8 O1 T4 |
;;
记录该turtle的邻居节点的数目
% ]7 B! U7 i/ |) etrade-time) x- K5 w' X4 ^( i" _# `, ?) u
;;
当前发生交易的turtle的交易时间5 ]( O/ W9 L0 Q/ p  T, ]* I
appraise-give
$ h2 h3 z6 }5 n6 z  X;;
当前发生交易时给出的评价( S  }% t' t6 a8 B0 v1 Y- d
appraise-receive. A- i( ~$ {% o- n! {! Y
;;
当前发生交易时收到的评价
6 x- v; L2 J0 a5 Z1 e+ tappraise-time: f9 s# {* V, \  i
;;
当前发生交易时的评价时间# R* v" f; k7 d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; p. {4 l/ q0 Z+ Ftrade-times-total
( C' o) o5 k$ ~0 d;;
与当前turtle的交易总次数
1 C  P! |+ |) Strade-money-total1 c0 ^5 i8 D+ e  D3 y
;;
与当前turtle的交易总金额" P5 H( I. B  ~0 `+ F
local-reputation$ ?, r* a* u5 ]2 `
global-reputation& w; E+ ]6 _1 ]* y. D) J) S
credibility
1 o2 P6 W# Z6 I. _. C4 l$ `# n;;
评价可信度,每次交易后都需要更新
: G1 K! U4 y; M: L' Xcredibility-all5 X* Z  M  b( N. y3 p& E& N6 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" ~; T# H8 S3 |) `% X, X0 y' x: R" e

- g+ Z# O8 _0 i: c& R1 K* e;;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  O1 s! X4 {9 m- J9 ?* ?
credibility-one
' l8 ~" Y9 s* ?- N;;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
% W0 r+ _5 \" Q+ Mglobal-proportion3 [) W0 {9 j. X7 p
customer, j9 ?4 h$ z/ j
customer-no
0 i6 Q8 L) [4 {* T) j8 N! Ktrust-ok1 J% \0 |+ L1 C4 R
trade-record-one-len;;trade-record-one的长度
3 v4 r; G8 g- S! F3 Z: k]
; c6 @* z5 ^4 Z: L- a
; e. B+ T* n' K" U4 ~;;setup procedure
' _6 _$ K9 v$ W4 w0 Q& A" ?( `& x7 b( m: `1 Q* i
to setup
! ?- b1 F. N6 Y# p  D
; m$ |1 h7 S$ G. v7 Jca
! N! d2 j* l! }. N
* r9 Y; w/ i0 ~
initialize-settings

6 `( P: G5 E, A6 r( f2 U* Z
9 F  x; [. E! j- H2 K2 _9 M4 tcrt people [setup-turtles]

7 {& G, G. k$ X9 K& b" @% q. w0 T, k
/ l$ n4 U" i7 X/ b  I# v9 Zreset-timer
: R. D# i, [- v, g
5 q& Q% o& O$ i
poll-class
3 ?8 Q  f4 E& C0 f, n3 f% j( k
5 V2 q/ ]0 U6 V' D
setup-plots
5 h; ^( ?0 L0 z& r1 ?8 @

: p2 C# ^" L6 A+ ndo-plots
- G4 V: T, y: Z3 a
end% G) ~0 \2 E  V9 X, g

& j; ?! D/ C4 k" H; Mto initialize-settings4 W4 K! l- u7 @+ N* C1 ^0 X2 x) D7 Z
' Y5 m/ v3 w9 j1 E6 i
set global-reputation-list []

( N8 X5 e  _, M, `" G; i' i, b* B2 y( O; i5 T8 V
set credibility-list n-values people [0.5]
9 L( R0 H) s0 N5 _% g" U
0 {6 J$ {) n  K& h7 m
set honest-service 0
. T( l" ]" z( Y) Y" A) x
8 ^' ~8 U9 U7 R5 u6 \
set unhonest-service 0
' P3 {& l- R$ G8 _1 e

9 D7 ?& [1 a2 L, M( f, A* r! Uset oscillation 0

2 F5 I# Y7 `: P% _8 u& l5 H0 Y' W& q
  p; q6 d, J  J& \! Z+ P8 Vset rand-dynamic 0
0 I: O: D2 O9 ?6 U6 e$ Z
end+ X% G; N* r7 f+ r: J) X% T

$ Z# m* [" ?/ r4 D3 D5 O+ Sto setup-turtles
; e+ |+ j# J/ b/ l. g9 yset shape "person"
# M7 T: e) E/ w/ bsetxy random-xcor random-ycor
$ Y: G- \3 q' Q/ e7 O' q7 u0 X4 Aset trade-record-one []; p, K* H7 _) u# X) t; J2 _, \$ a- S$ m
: h# K- T; _2 M# Q8 y
set trade-record-all n-values people [(list (? + 1) 0 0)] & ~! \& O, b# ]4 w. e

& t# F. o4 a' t) _) i! }. Yset trade-record-current []
# h5 |6 d6 O% u2 L# @" ]7 fset credibility-receive []
! w0 t$ p% o& P3 {1 ]set local-reputation 0.59 c6 T& g- Y% M% ~7 n
set neighbor-total 0- @  t/ |: m# E8 E
set trade-times-total 0
) A7 N4 {% ]2 Wset trade-money-total 0
) O% H7 o0 c5 Z8 `, a7 y" Nset customer nobody  c! m; o0 o' R- G% `- I- i
set credibility-all n-values people [creat-credibility]
9 p3 i9 j- m' q' z' l0 R3 \  Mset credibility n-values people [-1]
* b! A$ Y+ K' wget-color% R9 H/ g/ V8 a( Q- ?+ z8 d4 H

) ?- z+ [4 V6 e1 J* q0 b( zend+ {7 y, x6 G! x* T( v9 m
" O, o1 J1 ?+ _8 p# {! }6 T6 N
to-report creat-credibility* [* C) j; w/ r) j' D
report n-values people [0.5]1 P4 O  c* R  u! h0 H5 ]! `
end
% W. P# l9 }4 j8 w# U
4 Z; O5 Z8 T. O6 C! ?: Y% Hto setup-plots) G# q, R6 r  {- F# f

* x# l" J$ }' [, `set xmax 30

7 ]- V# j6 r% g* ^
2 K, O& f) L6 l" s! C5 _set ymax 1.0

( W3 }; @) ]) n0 C" L- o$ |, [- {8 N9 H7 Y7 k
clear-all-plots

/ z3 y8 P- o3 _, |& l4 t4 v; n: x
setup-plot1
  q5 P$ y. Z/ N& g( L
! A; B( ~$ m+ K, X9 e
setup-plot2

0 G* F  Y8 P1 ]( o5 c$ M9 B. O; Q2 @6 k* d  T
setup-plot3

; J3 {; y0 R3 o3 S( ]' y' i: M3 ]end0 G  G. [8 B# f! V

- N; j2 O2 ~/ |, p;;run time procedures
+ a2 h% }- I$ G; v& v/ N9 N% X
: c, i- M# q3 Uto go, X: K( B" ]% d7 U
( O4 K2 T8 [2 k- X& }+ Q* l" F
ask turtles [do-business]
4 S+ A- [  K6 ^  A" U) K" o# m
end
% X9 U2 _6 `4 E( |5 |9 y8 i' D- n5 u! _- @) r: h- P* P
to do-business
1 L2 @- y" A8 A: J2 w5 H% d
7 ?- [# C0 Q9 x' n/ E$ s3 f

! z6 R, D$ j/ F0 E$ T- t& N- [, L; Hrt random 360

( v/ \# T* u6 W/ J8 ~+ X8 M1 q, `1 X' c
fd 1
! t4 v1 ]) f9 V) `! m
# J0 q: G" }) Y
ifelse(other turtles-here != nobody)[

) K0 I2 }7 d. p  W8 t! J& K0 G( A; {; j2 R5 m0 m' L, |! K
set customer one-of other turtles-here

* ]" ?1 O' O* K1 z. F* M, n
5 z2 g3 G5 U* t  n4 U& O0 J;; set [customer] of customer myself

, ]: f" `  ^. y. ]2 p# J$ \5 }* E. x2 r8 }6 N
set [trade-record-one] of self item (([who] of customer) - 1)
- Y: q" e5 t( \/ W* R7 Z[trade-record-all]of self
# ?* U, t( w7 N0 q  B( H0 w5 {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 S: D! f5 o; w- a$ a+ L. d

7 {5 @5 ]6 K9 O$ H, }set [trade-record-one] of customer item (([who] of self) - 1)* @" U' H) K- i0 N0 t7 a
[trade-record-all]of customer
6 _9 o7 |7 u5 f3 Y4 l: p+ a

3 }3 _+ d$ \  _  Iset [trade-record-one-len] of self length [trade-record-one] of self
# B2 q  F9 R( m' X! s! Q
3 v+ L) B6 r+ m6 l" y1 @% {& J. r4 O# }$ y
set trade-record-current( list (timer) (random money-upper-limit))
8 I# \6 s7 R# t

0 }, K# S4 n  I6 }% [; g4 Nask self [do-trust]
$ G/ E/ J; t; x; ^;;
先求ij的信任度" Y7 s$ C: }9 E, G' w

- \, E# F& K9 S+ ~& V- g# vif ([trust-ok] of self)* t6 J) y4 {; \8 c' v& G+ E8 N
;;
根据ij的信任度来决定是否与j进行交易[
( e$ t+ W# }8 iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 J5 o9 ^$ o1 p2 K) x

) L3 Q% N& X+ k, R& {0 F/ ]% x[

1 t3 q9 q1 E$ }1 W% e8 C
% J% X2 p% x8 [3 q) jdo-trade

1 S1 Z, S  p2 V5 X- c* c
6 ^6 I8 V) S2 K  y7 dupdate-credibility-ijl

$ |9 |. |2 F+ ^5 L8 e$ g
2 Q) W% }5 U9 q( E2 R$ {$ oupdate-credibility-list
: t; d0 j4 b6 v
' r+ h; `& m, y# ^# s2 K
* y7 _, x$ }- ^- ^% E- s
update-global-reputation-list

) E+ ^/ o+ ?. G& Y; e+ r# O
- ]3 a' d% X; ?! k0 p" e  Npoll-class
9 ^$ J1 c1 r1 _$ M3 j& G0 J0 R2 e
; K' W. `! G/ W9 w: O5 a% z
get-color
/ i# n+ m! H) [$ D7 ^) y

5 a: T) T8 l2 T* G- F( D1 i' P]]* O" w( ^% U3 e3 K# C3 i

0 f6 F" F! n1 p7 B;;
如果所得的信任度满足条件,则进行交易
4 V5 ~2 x' t8 Z0 e
3 y% I+ f: _! B& z[
0 {% k& b8 ~4 f! X* {

2 U# w7 ?3 [' j2 Urt random 360
$ u1 I4 F# n! ~; Q) q; ^8 ~

( ^8 T; }& ]) L" O% i; Hfd 1

" ]2 A7 _" V2 D& I/ a, c9 K( X5 N/ ^* z9 t' U9 E3 e
]

! K3 c* z/ ^5 `, [3 e8 E4 J! X: I+ n
end

' l: P) M: t) z0 b) k- A. t1 M% B: |! J% z8 W) f
to do-trust
5 E' Y# F% \5 q9 g7 K6 Pset trust-ok False% w1 L: A- n( S" ]. D* L  Q5 N

' o, B$ u7 s- M
" P, E" h/ L6 V! J+ i
let max-trade-times 08 ^' u' y$ d. Y% m, G: O0 L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; e  T8 t& ]; q- X' L% Q5 nlet max-trade-money 0% z5 T# ~' i8 t  R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# V& M* q, m& t9 Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ g# X1 v3 Z0 h9 f/ J0 K
8 x( R9 p9 N/ v+ R

  u" {+ U- m- W3 J7 `  rget-global-proportion% ^- |6 F9 |% ]. D6 _
let trust-value" v; x0 O- t4 z$ A
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)

) |1 Y/ Z% W2 p; ]) G* r; Jif(trust-value > trade-trust-value)
2 o' ?8 P0 ?! W* A: K[set trust-ok true]; s0 f3 v- E# \
end3 u' b" J6 h/ S0 Y
8 N: O/ G+ v1 t+ T% s4 T. t1 F
to get-global-proportion( _# S9 l- k0 _9 _7 |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* S7 l5 n% c2 \2 y; [) S& {[set global-proportion 0]& E* ?8 v) B2 r8 {2 J
[let i 0
' A  Y$ B) R. K! qlet sum-money 09 u/ \3 S$ {7 z  Z- d: P+ m5 Y
while[ i < people]
' R# l2 N! ^# k; W3 \[
" V" }" ]4 {$ `1 |8 z$ E4 aif( length (item i+ R6 v( ^7 n! w$ W6 ]3 y
[trade-record-all] of customer) > 3 )

( X7 H$ D4 G  C% [  ?3 Z2 w[
' v5 {( P, Y6 w0 V; A! J$ u3 Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 c" V( d8 m4 [, i7 ~. i
]1 j6 D5 m! ~( L6 k
]/ `" Q: w8 O. P
let j 09 V# l( S! c2 R: o7 ^* `
let note 0+ c' R0 O) E- N# g5 Z: L! {, {
while[ j < people]
; }9 e& X& l# T$ q% G[0 ~& R0 N4 q! C' a: y2 }5 Z! S
if( length (item i8 ?! @2 l: A. I# j: H0 F
[trade-record-all] of customer) > 3 )

0 b& {6 ]. S5 ^  E[
5 {8 D4 o6 P0 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  ^( X! Q; R$ m  J4 s  h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. O, P! F  X" w; V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# j9 R$ G1 m# A4 A2 m]. D1 X  U9 Q4 b
]$ n! v) |. E, k- |
set global-proportion note! o! t2 U" P2 ^' o; {" _* I$ t
]4 K. \, ~- B, X, f4 b
end
* G2 m/ g' s0 i6 z- V- L' y( Y& v! R1 [  F
to do-trade
# n1 p6 g3 U, }* I5 t;;
这个过程实际上是给双方作出评价的过程
# N; o1 ?+ Q: ~, eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 N$ G; x# z9 ~" W! ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 z6 B8 G# w- B
set trade-record-current lput(timer) trade-record-current( w' j2 q9 f+ s2 Y  I
;;
评价时间! S* O2 {/ P" \7 H3 R: I! S
ask myself [
  W, s, W2 L; |* v4 k! s! d! r" Cupdate-local-reputation
6 s1 S+ x6 M& D& cset trade-record-current lput([local-reputation] of myself) trade-record-current- V& o8 F/ M( A7 j6 H' v0 U& I/ d
]! c1 b# W4 t* g7 g: A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: U) g( f) @5 H2 J3 T( o; M
;;
将此次交易的记录加入到trade-record-one
! p8 x1 m9 U' h" S3 M6 b+ ?( t+ iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  K& T) B9 Z9 {, m5 {let note (item 2 trade-record-current )# W9 K3 r) Y$ W% a2 e: }) H
set trade-record-current$ g. X/ ]2 O: n' w+ R
(replace-item 2 trade-record-current (item 3 trade-record-current))

; e, L) w& I+ q$ U( t; }8 Zset trade-record-current# j5 w9 [0 {4 N: Z# ]6 t
(replace-item 3 trade-record-current note)
. E9 i6 {$ u% w$ {2 G4 i% U  \) g6 f. l0 N% S9 w. k
2 h0 x+ c) x4 o
ask customer [8 r3 R8 w& c7 ~. R
update-local-reputation
! p  I& e+ h  zset trade-record-current
/ Z# ?- @( M8 a. _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ o% V* m, s' {6 \. Y8 r$ k]( M" B# \  V& d0 o
% o8 S* {1 }! E' f( d' p

& w: y# k1 ?5 c: k; m+ hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& j5 T( Q! J" n6 b( u
; q# `+ j1 H9 ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 H  m4 q( v0 x) z8 X
;;
将此次交易的记录加入到customertrade-record-all
6 d, a9 D: X! `+ rend3 t+ Y5 |9 y1 l# G1 i

+ x) q. G, J" R/ S; P( r4 Z1 Q/ Tto update-local-reputation
1 R6 ^, C: |5 W" U# M7 [set [trade-record-one-len] of myself length [trade-record-one] of myself
3 |8 C! ]$ y5 R. g% F
& _: U4 w1 }# p; T! |6 `5 H- ^9 x5 `1 J/ p3 O
;;if [trade-record-one-len] of myself > 3

: g, f4 q6 K! v/ dupdate-neighbor-total
1 I; O4 D* s! f8 `8 }! `1 H;;
更新邻居节点的数目,在此进行
2 Y" H: {  `" m4 f# a0 K3 n0 f8 nlet i 36 {( V7 `; ~, W% N- E5 B2 d0 G
let sum-time 0
( Z' W* u- d: G4 twhile[i < [trade-record-one-len] of myself]" T- `5 k* I$ g' i
[
7 ]) j, g: N( x3 o1 |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: T4 |# P0 J1 }2 X' v7 uset i
% D( T% Y! O. Z3 N6 k+ U' j" |  q( i + 1)

  o0 f6 A) P! y1 ^# u7 N]
$ M; x/ I( K5 X8 P# slet j 3( [0 J3 u1 m1 t! h- o4 T
let sum-money 08 j- {& l) Z% l
while[j < [trade-record-one-len] of myself]
, B. b5 V' W: t) K9 s4 j! N[
7 }8 H) B6 J1 bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- e( j4 ~8 y0 B/ z" O+ _' nset j
7 ]1 l8 t7 p# i' x) _( j + 1)
0 F; ^1 W# n( U- ]/ w) D' Q4 T8 m2 w
]
# R0 y1 t8 N0 q' q% J( Ilet k 3
1 i# |, |2 y) @: l& b  e+ R0 Wlet power 0/ p" ~' e% F; a1 Y
let local 06 ?# s( Z" A' F4 x
while [k <[trade-record-one-len] of myself]
. e2 F; Y: C- l  k- [0 G[8 M/ x7 n3 V  K9 T: B
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) ; @  e6 C) E+ U  U. E# Q" B, j  L
set k (k + 1)
$ Y6 j$ K0 n% [0 Q]7 P( R5 p0 [9 @! Y
set [local-reputation] of myself (local)  a. j5 \; V6 Q3 X$ }
end
2 k7 U& p* r( c1 K. n& _$ r+ B+ d* h" G& ^
to update-neighbor-total% A5 ]9 {6 o9 M: q2 P$ ]
; h- z! b: C# F/ {* T" V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! |4 j, N  b' x% |2 U+ V3 `0 K; i" E* G6 z& @

) W( l. D/ B( [# v1 Q1 O, Kend  |1 _5 {" H+ Z* M

  `* `, P8 Q3 q- {, lto update-credibility-ijl
1 c7 a; I1 V) n9 S. K; Y
9 N6 N- b) i0 Q3 d7 p;;
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 g0 U$ w' @- U7 m
let l 0+ I! f* H  V* _
while[ l < people ]1 S' K' @' ^, k% U( 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
$ n" G* X) a! i& n$ ?; c% B; J[
3 N, [& ^$ a$ c$ r1 K( r4 h$ Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ X" \% }  d/ I3 m
if (trade-record-one-j-l-len > 3). k( B- u# u. H. K: @7 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; s( D7 F% k* `* Z* X1 l% J& f7 P0 O
let i 3
! ?5 w3 a, x  I/ f/ Ulet sum-time 0
, {1 h" _: N' a6 i9 C. _6 wwhile[i < trade-record-one-len]4 F, I0 f) G5 P) X3 ^! n8 D
[
  ^" d' i+ Z1 Q9 r" F, b) d8 qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 b& A. [8 H- [, `! N% {+ t+ nset i' Y6 Q. d, l# a# U# m( M( P
( i + 1)

  P9 |5 L, }8 i* k  U2 b. O$ U3 m2 N]  \; Q4 U9 K% R
let credibility-i-j-l 07 t4 j9 A+ j1 E
;;i
评价(jjl的评价)* u$ S- i' U; \2 U' u! Z
let j 36 b4 y8 m: W0 i" R5 n( @% H* a
let k 4
$ X2 e  S  B/ u9 m( M7 J3 dwhile[j < trade-record-one-len]7 @0 {1 t% B) Z
[( `/ v! p) S) ?& r' W6 D% w& D
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
1 `( m/ @( t. S& k7 v+ d$ 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)
; T+ i( d( W4 P+ cset j
' m- x+ O, E, j, |8 z! n" L( j + 1)

' U) Q2 J6 ^: h. k5 Q# r7 J]
/ ^8 D. x& T6 S; b. Z# m, V; Sset [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 ))) l# O: d. s4 A5 |

3 d( |' E) J# O$ T( t2 v: l+ \  F; M

  c3 W. I- ]4 Q" Y' w# llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  g8 e1 A! ?% T, Z;;
及时更新il的评价质量的评价( c# H# v( s1 f
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% {" c4 j4 \: l7 C8 \- P! }
set l (l + 1)
) X0 W; c; n/ v- N: f1 F" H]
# c+ I4 o- H6 {" K6 L5 n; x7 lend' R0 ~$ \" w2 g/ i

+ M/ J9 ?3 d4 A8 ~$ S% M' ~- j6 Cto update-credibility-list
- T; {* @/ ?. v1 \+ D* G8 y. glet i 0
5 P' o) O/ |2 c& k& ?1 W5 nwhile[i < people]
  c( Y  s. {; G. [9 J[& V2 ~7 |4 ]5 P* S3 E
let j 0
' P. ^% E+ Q8 Z2 m7 e4 Q7 j! zlet note 0
; P4 A+ j3 D# n9 T+ alet k 0
/ C; I' J0 |, v5 `9 M;;
计作出过评价的邻居节点的数目7 b6 ~' K! w7 D) A7 S8 @. n
while[j < people]# h% D8 k5 K, A7 \, G' Z
[1 `( s2 V% _2 W3 ?' T
if (item j( [credibility] of turtle (i + 1)) != -1)
3 l: @  o. T; S8 C& t;;
判断是否给本turtle的评价质量做出过评价的节点
1 @) ^% _; h+ U[set note (note + item j ([credibility]of turtle (i + 1)))
( l1 J0 t7 J7 Z6 t- G;;*(exp (-(people - 2)))/(people - 2))]
" k0 g* d9 P4 q. d2 Z2 _
set k (k + 1)4 }1 A. c1 B5 T3 _
]
7 D3 _9 D" W, x; \; Zset j (j + 1)) }2 L* O( b1 u  ?+ u7 O9 S( n* B
]
" m( U) V( s& @% k  [4 [' ]set note (note *(exp (- (1 / k)))/ k)
9 Z. l0 _/ P) e+ C0 ~( c% J3 f  rset credibility-list (replace-item i credibility-list note)
+ z; |1 e7 X/ E# b/ O7 ^set i (i + 1). [8 }& F2 ^. |% |  K* t
]
7 \1 a; _: E. D" F, S/ {end+ L$ i% H7 v% l# T, Z* x6 ]2 n
  a' L! ?* J- _* j6 a1 a" \
to update-global-reputation-list8 Y# f* P, _! p- ^1 C
let j 0( c0 O$ Q+ I2 I$ t) p8 v! b
while[j < people]6 C' M! Q1 W9 y8 j* A: R+ ?) K6 }
[
7 Z/ H0 Y9 ~# r3 b* N. \0 ]let new 0
# G7 [  J" \% m# z- j' ?! k$ J# L;;
暂存新的一个全局声誉* M5 x) ]8 ^% R  Z
let i 0
. P1 M) e1 A0 p$ f1 H7 Mlet sum-money 05 _( a$ V# {0 W  s1 ^% D) m
let credibility-money 0# [, Y5 p9 o0 V3 y$ \0 a
while [i < people]
( s0 P: ?$ J: D[: O$ e1 y+ @6 n, t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! L, t3 _% ]4 L+ X9 W3 \- w/ |) gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 V" ?( G8 z4 c7 i$ R
set i (i + 1)( U. m) r2 c/ w1 w) O- j- @8 l
]
1 b3 h8 l$ I4 f8 u; A. i3 c7 m0 Ylet k 0
+ [7 R1 A! R8 J. P6 O: mlet new1 0# w2 K( f" M- d; @& u
while [k < people]! b: o8 J" u) H' q+ S! @- R& X9 \
[
; O+ d. ]% i5 U3 o9 N" |/ \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)
5 B/ l. v0 k" n" \0 [/ @9 qset k (k + 1)
0 {$ j5 Y$ b( l) V2 t* D]; |# o9 K( {7 ]( z5 N: q$ b; H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( h3 y$ d4 G2 ]" r) P
set global-reputation-list (replace-item j global-reputation-list new)
: \% s, P/ S* d0 F5 _8 @( Aset j (j + 1)
  e5 {& d; p6 U! Q4 P]5 C$ ?2 x  ~4 X+ @* d  B3 R  O2 H
end
( b5 C$ h- `- Z; O9 h* S* B7 f/ ]& C1 o9 Q7 C7 z7 U1 v

1 o1 v# s- H/ U" ]) }
) U% A9 u- P1 mto get-color
# r* i. ?3 A  n1 m- Z0 `6 w8 W8 X5 e: P+ s
set color blue
. o$ U4 ]( i' f5 @3 p6 q" U
end
2 i' [4 q% V4 S4 \# I" l" a: F+ j% r8 U
to poll-class
8 m9 \! B9 w1 l4 f# rend% S. P( V  ^, z) @& q3 I8 z
* b$ E# A: n" i9 Z1 P
to setup-plot1
4 f# j0 R, Z- C4 \
3 d# I# V( X1 c$ U+ U8 x6 s4 r) Y' k; Jset-current-plot "Trends-of-Local-reputation"

! G$ i, e0 Y0 S# S* H
8 `! y" B  u( h+ \set-plot-x-range 0 xmax

0 {, \5 |- R# C# u5 A1 R) \7 |  h( y2 W; l: E" |7 x
set-plot-y-range 0.0 ymax

! Z" K- g) W4 R$ k3 [end
# L. Y. ^$ A/ c# g/ Y! U7 c# Z8 ?* A) A* v% J% u
to setup-plot2; v" @) ~& p$ G0 F. T0 h6 @

# h( Q8 e( l9 i, S( ]set-current-plot "Trends-of-global-reputation"
: A, @7 f; n9 O

2 M8 ^! Q1 }# }6 N' z& J& gset-plot-x-range 0 xmax
% v* |% l1 v, Z5 v2 h9 J
0 }! Q. ]* I& e8 j# D( k8 [
set-plot-y-range 0.0 ymax

% [' S/ N" I; _! u# f' \8 ]4 z$ ]end1 I( E9 L  A1 o# f2 O+ c

" W9 m6 Y! W/ x5 p+ D% g. A6 t4 i/ bto setup-plot3
4 @  y7 C$ J. Q5 L, F! J& F7 m7 ]% b1 e9 Q4 g) h+ }* [7 ~/ ]" G
set-current-plot "Trends-of-credibility"

" M# F* j' z/ |) z9 D1 C, [" o' K! |% L* t; I0 ?# \
set-plot-x-range 0 xmax

( M8 F9 @7 }! }' W8 F% e/ {7 S! W
set-plot-y-range 0.0 ymax
1 X- P  ]3 @! i5 O! R7 x
end9 }+ x' _3 W2 ?9 _0 f/ k

3 ~% N  h, Y- X" z' F& `+ Dto do-plots
+ _+ a, t- R. g9 wset-current-plot "Trends-of-Local-reputation"
6 q4 G. ~4 E% [3 Nset-current-plot-pen "Honest service"
4 u. y* I/ W6 C+ Y6 b8 Zend4 o. W+ n' P, \1 M/ ]

# ]0 o( t5 z2 [' ][ 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.5 c2 V2 V" F- x6 Q

# A  F5 G5 a& j, Z这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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