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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:
3 A6 [2 K/ ]) ]( i! ito do-business
" \. W4 |2 u5 n2 E rt random 360  _0 h' U% `8 ~+ F
fd 1
& W  W5 P9 V: n! O& I4 q& i9 x ifelse(other turtles-here != nobody)[
) p0 Y6 ?" s( z0 b" d4 `   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.
, T4 }8 q5 Z2 S" t1 Q6 d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 m/ t7 @4 w1 ~$ L. i4 H0 E   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: X' H: O' B" j/ m9 T   set [trade-record-one-len] of self length [trade-record-one] of self
/ P1 G) i" a! O6 q5 P3 K" r" z   set trade-record-current( list (timer) (random money-upper-limit))
: ~0 W& `2 h4 w" u" N
4 _( m+ r# b$ e" ^问题的提示如下:
0 O6 h% m' O) [1 h7 D2 h: }
- s1 ?! ~6 I7 ~: I- f& E" ierror while turtle 50 running OF in procedure DO-BUSINESS# ^  Q2 U5 y) d6 I, s
  called by procedure GO5 ?0 [8 V4 E' t! y+ k) k* i& |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' k$ A: f- \, ~0 J) N
(halted running of go)
5 w9 u4 o$ G7 R. O  Y; d
  h' g, v3 \1 Q$ u& q. P  v3 k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 W6 V) H+ s6 T8 l6 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
+ @/ s  z+ K& x, X: P* z' m/ o. sglobals[: V% P3 f6 o$ f$ O# u" ~9 L7 o! Q0 ^
xmax
; X, G. M  S" d) n, [2 \, |9 @ymax
8 Y7 ?& O, p6 ?; xglobal-reputation-list
& O0 b5 p2 `. D
% F% A( g: E8 @* O" b9 M8 @6 F;;
每一个turtle的全局声誉都存在此LIST9 w  L) }- l* Q; P% |: {  M* P0 h
credibility-list
0 s- C6 h" W% w5 i: S;;
每一个turtle的评价可信度
) b& e. \/ }% _5 M; ^/ Xhonest-service4 D% i5 j/ v6 z) E. [" P  P
unhonest-service
  X' z) d6 }$ O  |5 L8 G' e/ eoscillation
, M$ E% v; l4 R4 \9 J* Xrand-dynamic
8 A: F8 }3 r" |]
# K) _( O% b2 ^/ G# ]# h! R! Y0 i% s0 `4 t8 g0 H( G" z* Y
turtles-own[, Z$ _' Y* Q  f* S2 x% l: D
trade-record-all
0 i. r+ D+ q  R3 c;;a list of lists,
trade-record-one组成; j1 q* k  Y, ?& ?+ f
trade-record-one
- I* W& @; H# k! b+ K/ |; k  P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; ?6 {! D; O! p# D8 y/ G! u
% T0 k& S- U) E/ s4 s8 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]]
" d: {) o8 r7 [! m- etrade-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]' {# ?+ R! C8 A" h. u1 n7 e
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
& t, C3 \! `7 P: g* q1 d1 Zneighbor-total: c$ d" o7 r+ O( J% q' d
;;
记录该turtle的邻居节点的数目
$ Y: |; Q; }- a" Ltrade-time. Y! x9 L9 l! a
;;
当前发生交易的turtle的交易时间% P) ]0 V% C  T% m( B; }- {% e
appraise-give
, V4 r4 O# d- A" A, E, z;;
当前发生交易时给出的评价0 |/ a, z0 L, h' V( {, i- {
appraise-receive
6 p  L; S  J- n& ?8 Z3 C;;
当前发生交易时收到的评价9 J; u( f1 u; F/ f
appraise-time# O7 z) Q# g# u
;;
当前发生交易时的评价时间
5 ~1 r1 H8 K" y1 hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ M9 s/ A0 z* ~6 ttrade-times-total
( o) f  S' N7 e/ N( y;;
与当前turtle的交易总次数
  m7 N/ l0 \4 E5 q9 G) C5 O6 T& Jtrade-money-total8 B9 \6 P7 X. H! f9 f$ S
;;
与当前turtle的交易总金额3 ^' d! k8 o# ]0 {. {- H6 `) k
local-reputation8 q3 a* `/ x( o7 ^4 Q
global-reputation: m6 f2 |  E0 `* f! I0 |0 u& N/ w2 x
credibility
0 g) T7 T5 N  t+ a' p9 ^4 h  j* d;;
评价可信度,每次交易后都需要更新) n8 T3 }0 Q+ b4 D  g- x' x. n
credibility-all: P' W0 ]0 L2 d. S1 S6 `! o9 B
;;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5 V0 T5 A3 [5 Z

3 i5 N3 `6 c. e# z2 m. C;;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! z" Y$ C( V% T. n0 }1 U1 J% t+ X
credibility-one4 L- g- }1 o- ~4 G) Z5 N0 k
;;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people6 G1 G5 ^# ?3 i5 {! n
global-proportion: v0 N- y# A% P5 E/ ^& Q" ?: K
customer$ V2 Y  ^' ?: P8 ^. t8 [
customer-no
/ D0 J3 X/ \" N$ Atrust-ok6 k: h% d6 ]  E, i$ y% M
trade-record-one-len;;trade-record-one的长度0 ^0 v1 _. N, w3 N2 b
]
2 Q) e: q7 c( b4 b; Z
6 ~- j+ X3 E6 T$ x8 a3 @5 N3 T;;setup procedure. L. f& P* U8 b" N
; @% X8 ^9 C$ c
to setup) ?: v0 S2 n  j1 d/ f6 [* R
) A& P& P0 h% {
ca

- h% y4 h& S. P! Q3 K5 {2 z* {$ r7 x
initialize-settings

4 w* D1 ~& [- n+ a/ _6 c3 L# j' y- e( s
crt people [setup-turtles]

; Y: B' t; y6 @' O9 j5 ^
  G2 r3 L; d( U8 Preset-timer

8 w- t& M3 R2 z7 d4 Z
3 h" W( x( k( ^5 d# E3 K* ?, Bpoll-class
6 f: O, y4 c8 t+ y. R% K0 J
; V* Z9 [( i5 H' l2 }
setup-plots
$ P( g1 {6 S0 _7 f  K4 Z

8 J9 N: n* T* g: D6 `- x2 ado-plots
# a+ }: u) m4 R! ^7 e4 a' e' I
end
: v" ]6 c. p7 J
4 k- f, h, {5 h0 D+ Vto initialize-settings
; Z+ T2 M2 T9 A) W' G1 l
  g( b8 p, t1 B4 N+ ?/ D% A0 \5 Fset global-reputation-list []

" I+ [/ z) {& c9 Y, N( V. J) B4 [) O3 r/ h6 Z  Z
set credibility-list n-values people [0.5]
) n. `. R0 T' ~1 Q) z

' q$ ]- [) _$ a- R1 \set honest-service 0

' ]( l) ?/ k4 J# o: O# E$ m; D" @! L
set unhonest-service 0
3 j; Q/ q; D* u8 u! J7 \4 C. w  g% `

- l/ g0 S! P# s; a2 eset oscillation 0

7 \, J9 C2 o+ e5 A' |: V9 t7 ~6 u( ]  C+ t" A( Y
set rand-dynamic 0
2 l6 K/ [- V7 c* |$ N4 V
end
' G' l8 O  q. w5 ^; x
  h* c6 ?5 \! w% E& r( j* zto setup-turtles " X9 N& y4 Y5 `; g! j! q
set shape "person"' w; c. \. B2 A9 S) ?% w! H
setxy random-xcor random-ycor% t" ?  |" f8 b5 M8 g, Y
set trade-record-one []
; S( Y- r3 X- q- E
5 a) |+ L$ V# E* N) t: C& H
set trade-record-all n-values people [(list (? + 1) 0 0)]
' G% ?5 Q' g" S

8 l4 z3 O5 D* e+ jset trade-record-current []
/ ]3 i3 V$ T5 H; X( aset credibility-receive []
4 R, k, A, `1 j/ fset local-reputation 0.5. `8 {: c6 G, H
set neighbor-total 0
6 o5 C' Y) V4 u7 D+ pset trade-times-total 0
# i2 e( E$ e, K: g5 R. S3 ?& @set trade-money-total 0
: s& H* Q$ {% D- N+ \4 `2 Nset customer nobody
+ D7 D8 Q0 e% K; f; B7 X8 Sset credibility-all n-values people [creat-credibility]
, @" `7 p. C2 I6 t" Uset credibility n-values people [-1]
, r8 R! v% J+ N7 X7 Q* j' x. ]get-color
2 F4 m1 Z; C  s9 E% o, [7 f  f

" \  B' ]. ]0 s6 Jend  g& W# {; ?, u1 L8 x: B  D: P

1 L% H8 g+ h3 L" Qto-report creat-credibility
: n5 q. [7 z. I' ^  \7 Greport n-values people [0.5]* b3 _0 i% [0 J# R7 Q* M3 i& Y5 w
end
6 H( |9 s3 E2 h  q# P( B8 f# `$ ~+ b7 x7 u  @
to setup-plots
9 \8 @  N; `( `
4 }  ?8 J( o* A: {: B) K8 ]set xmax 30

/ L$ }* ~- m. c2 K! S) |8 W3 h! l& U" b3 l
set ymax 1.0
# d5 i& u& g+ a+ g# d! o9 V; _
4 p  C9 X$ z" n, P! m7 {
clear-all-plots
' \2 J5 M7 L4 B) ~+ F1 K3 N

8 a% V% u% {; I7 Z6 @setup-plot1
* s* K7 w5 |1 T4 _+ u: x

' b' X: g# D0 ~1 B1 m' ?setup-plot2

6 i$ z# p9 K: J4 A  C
& Z7 y$ Q) q" V# h+ c) C" l/ Qsetup-plot3
# I/ p% Y% a% n6 n
end. J# w1 w( x( B0 y
8 F- w; b3 j% L3 u6 |
;;run time procedures
2 g5 `; Z1 b! @5 q% L/ p$ B* I$ k- |! n" X4 W, E2 n
to go
- q4 e# E! k" e# X! P& \, X. u
) u9 Z. E# m  s* ?ask turtles [do-business]

- C; J7 j/ r5 ]; B4 g0 Q: Yend; g6 R. ~8 m8 C( a6 L
  V- [- p" }7 \" E: w
to do-business
3 B+ _1 s4 H% {9 w* B; j- ~& g3 `
' g4 |2 a1 G9 ^- H" W

* t. @1 M1 h( k  x$ R' O+ i4 brt random 360
4 \; k7 e# a- b4 M! y3 j# Y
3 ~2 B* [: d( n
fd 1

8 I* ~+ \1 j$ o4 I1 J- s0 D7 P* @" M" ]! ?! B
ifelse(other turtles-here != nobody)[

) Z/ v% R, r2 \" P4 f3 R
3 h, _/ x6 j1 C/ m5 `1 q0 m/ zset customer one-of other turtles-here

" E1 b; C6 G+ E: Q
# Q) L$ c  n* a;; set [customer] of customer myself
! K# f, @' X8 h$ ?4 H1 f+ c- q

% n4 ^' y9 r3 zset [trade-record-one] of self item (([who] of customer) - 1)
: r4 Q5 n6 p1 V$ D1 Q5 Y( ~9 q[trade-record-all]of self3 o+ ?3 [( x: j- V" S- u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. B8 N6 K) _) M0 h( P4 @3 D0 c& B( G" T
set [trade-record-one] of customer item (([who] of self) - 1). A  a% T9 R* S0 j# _$ o  V/ u
[trade-record-all]of customer

1 O- G- J4 b* J% O3 |0 f
: r! D) s& q" f. q( x: Iset [trade-record-one-len] of self length [trade-record-one] of self
. S& [1 D+ Z) y) M) O( D+ T
! s5 y6 ]3 m/ x, X2 I
set trade-record-current( list (timer) (random money-upper-limit))
# B2 ~+ R* o1 R/ `, Z3 m# E
( Z& a) R( S" Q% _4 h
ask self [do-trust]  D9 J/ X& c& U! V1 v9 u: m* R
;;
先求ij的信任度
3 L& @4 t) a) a
0 s$ V% g$ f2 {) }6 \7 Eif ([trust-ok] of self)
* R: r/ A3 \9 J;;
根据ij的信任度来决定是否与j进行交易[  ~9 @$ q) k4 d2 `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ N! u) L/ L- r8 W7 T

6 |; C+ b8 D2 o4 v4 I" K6 b" a[

5 f( N! E& z: p! x) d: v0 S" @: d( @6 G, _! _* u
do-trade
0 t- `1 A  R6 @1 S9 k8 {
. T# I! ~+ a* \* }+ R% W+ B$ q
update-credibility-ijl

+ H0 z* b- V: x* x3 M% ^* [0 U
  Q! N2 d7 Z1 f7 F: e  j) supdate-credibility-list
) ?* H8 p! U. v, X
3 s4 {2 p1 }1 }( |
7 C7 q+ }. y- L9 ]7 [: d/ o8 I3 Z
update-global-reputation-list

: Z' [7 A9 D$ r% N" ?8 x
! }. p  I) N8 m" u$ J0 G0 ^9 fpoll-class
5 G; F3 ~2 M- A  H+ w8 }5 G

/ r' O* B+ c. q- K) T. d. |get-color
3 i9 P; y: n" ~4 J$ N2 N. r4 i

0 B6 [* Z/ ]$ T]]
3 }- V% M5 H0 s) ]
: ~8 q: Z( j3 W- r+ H+ q* T;;
如果所得的信任度满足条件,则进行交易1 m* l$ \- ^5 w$ d, E
4 S' ?( r$ F) T: i3 t' n% o
[

# \( Z$ s' d  J, Z9 d1 G" x2 l- ~4 M. ]8 B
rt random 360

2 n9 p# ~1 P1 C8 x4 Z
6 p9 c! [/ f4 r/ m6 Vfd 1
% N) J0 a1 b5 B7 O  U7 l+ ]! f

, c5 @; H+ b7 F2 d" H4 F]
0 m0 z' i8 S1 d" W

% i4 L8 R& U9 }' @/ _+ vend

4 a8 u5 v. v' F& Y& W% l
: T8 n1 ~4 F, P& tto do-trust
/ K7 L# Z5 ^) rset trust-ok False
2 u9 ~! ?* A, y2 ?* E1 Y, l9 v, a% m) M

4 a: Z: I  k, G$ ^6 tlet max-trade-times 0
0 v4 e$ o/ w3 c+ p5 O+ aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' y4 A& Z$ @, q, a% |# _
let max-trade-money 0
, ~4 ~" f3 d. L- p$ C: {1 eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 H+ @" n3 J5 M) C$ i( }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 i& J* h+ j( L  K: g

( s  X9 H' Y- p- w& C' R9 P
1 N  n0 u) Z3 V. `' u! ]6 z! L% |
get-global-proportion
! G0 i2 V4 k, L2 [let trust-value
4 {8 t- X1 b' F- [) M$ A* I& Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ ~. h8 O* Y9 o8 k* r; Cif(trust-value > trade-trust-value)" p2 p& l" |, A: }
[set trust-ok true]
7 L" a# C+ h+ c6 [$ D  Zend
0 q3 d; S! B7 [) A, f0 c/ d  G9 u  \2 f  n
to get-global-proportion
" L5 V  ?9 ]  S3 Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 ^; h' s$ k" t* A8 \: N7 U[set global-proportion 0]' e3 N+ j/ G7 ]0 O* {  }3 s8 d
[let i 0
- l, c$ N5 x  A2 W' I# dlet sum-money 0; n! z) n# K$ L) i& N6 Q
while[ i < people]* Z: m6 M4 b4 a5 c1 U
[, V; p1 q& ^, G
if( length (item i) ~  E8 t9 Y: A% q+ M$ r6 ]
[trade-record-all] of customer) > 3 )
% `9 F8 l/ A9 N( }+ |
[7 G9 y' v2 I: G. b  ]. C3 J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 a" R% v7 }' L$ h8 p6 P, m]
; h" r% \) }# e]
" v" }$ P  D; z" klet j 0
  {& y5 i: M8 N4 H# Qlet note 05 ^1 I8 c' L! e( U
while[ j < people]2 M2 g  W8 M4 O# d# d  Q4 W
[$ r  {0 Y+ i+ ?0 Z
if( length (item i9 [0 t) M1 ?2 q* \% [  F' U" _
[trade-record-all] of customer) > 3 )

) C$ R  q3 t/ `/ _[# O0 G$ S% ^' @9 U( z0 o1 q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* v3 u3 d0 G: P2 p& A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# C% d/ N: W7 `; I& Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 p. o1 Z3 C4 H4 w+ s; D$ D
]* F' Z: k+ W; T& u/ E2 ?4 e
]
- d! F& Q* P# s: [* Cset global-proportion note" I5 S5 S* w: d6 i
]
7 g' j2 Z  N% A' o1 p5 m/ a8 bend
8 d; W, _' s* h. j: H- h" B6 X- E! [! @2 {; }5 b" U9 m5 ?; G
to do-trade
: f5 K5 B$ b: E( ~3 H: L;;
这个过程实际上是给双方作出评价的过程8 [) M1 u3 Y: ^; b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. R$ A. ]% T1 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- X1 W8 r! ]; ]. J& I% l
set trade-record-current lput(timer) trade-record-current/ I3 `) j" q1 F9 Z2 v- ?
;;
评价时间! r& X% K# a/ P7 Y# M+ g/ X5 h% J% m
ask myself [
+ i8 p( k% z2 iupdate-local-reputation9 l/ A' C( f7 X0 B% n9 O
set trade-record-current lput([local-reputation] of myself) trade-record-current
% f% j& f5 O' l& j, |3 L]
' t" d  _) ]& l, a; v: |% rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: |6 i% G( u! s+ a; W& W;;
将此次交易的记录加入到trade-record-one' S% c) ^9 t2 E/ x/ F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; ]3 F0 u2 U2 j% Tlet note (item 2 trade-record-current )
* ?. H" }# B% x1 {  u2 l; ^set trade-record-current; ~/ s5 n5 `0 v5 [1 K, f4 E
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 ?! S% t  F) R% f5 ]5 g( `; yset trade-record-current5 X1 b; m* T9 c0 U
(replace-item 3 trade-record-current note)
' I: B" \# H( @* ^0 g! Z& s( k

" ~2 @4 X0 W3 K! gask customer [% m, |1 Y1 P; a8 w9 w  t# z
update-local-reputation
) ?' E2 G4 I) ~: p$ E6 o5 y' J, Dset trade-record-current6 f- ?5 u/ t* Z. ~' Y$ k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. j3 f$ W) G' z& ]
]
: S. m7 \9 F2 V7 w* s+ B6 k
4 V) k0 x( T+ f% p4 x7 [
, H8 P2 j2 [! F4 y: S# a0 U; G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; {3 j, M6 l! _% f/ G$ P8 }! y' |) x

  G* @) R# |5 _* d' O$ Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) Q& @! g/ A6 k# f. w
;;
将此次交易的记录加入到customertrade-record-all
5 e9 v7 _) W- L9 P* s0 A; wend
, L5 h1 U( f; B; j9 D/ n/ V7 Y% B
to update-local-reputation/ w2 I! D, z1 `! `/ k
set [trade-record-one-len] of myself length [trade-record-one] of myself5 \* r$ O; Y  G5 L: o4 Y7 e3 c/ D

# r! Y+ J* f. a( S+ D' C! S0 e1 P, I! u+ U3 L5 o
;;if [trade-record-one-len] of myself > 3

- J& Q; M3 p. s6 q8 q, ^8 M. eupdate-neighbor-total
* A9 s8 D0 l* `4 a! V9 v1 y8 {! G! [6 N;;
更新邻居节点的数目,在此进行
9 S' x( i3 P( `, H: C5 {/ Klet i 3% l) x9 Y  P; S) ]; E
let sum-time 0: j. d+ l/ E! h7 n
while[i < [trade-record-one-len] of myself]" ^7 i) P% ~" O
[
# d% r- j6 h, Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 ?" W& q2 G. R! {+ _
set i
4 T% S3 F$ T/ a& E( i + 1)

2 ~  d6 Z& z: ^2 {/ K]2 M  }1 I( D: d, i& @  f' f
let j 37 f/ m- x, @" }6 M4 f
let sum-money 0
$ x) m3 |! t2 J2 h8 awhile[j < [trade-record-one-len] of myself], K6 Z) j% @# l- w: C, j' D
[
/ G' i& C; @0 Z( K, l3 }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 f- O  B) R1 `7 @/ V; q1 \set j
4 L( j* ]/ l% [; ^( }- r( j + 1)
& i5 k" i+ V" ~2 S" r' N
]7 O" v) v6 L! Q; E/ z2 @$ s7 l# V3 M
let k 3
) I- ~# _/ J2 ~* o5 }" a  Olet power 0
( e& Z% G8 H* R( Z5 i0 [9 H- ^let local 0% v, T! i2 b) ^4 |* ^4 G4 @
while [k <[trade-record-one-len] of myself]$ N, u% ^4 c/ ]; U. z8 ?, |0 o
[) _) A/ U6 ?# J
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)
- I! a# a7 U1 _set k (k + 1)
2 x2 O. T/ y% k. W3 p; c6 |) i& h]
) W! X) u& U+ Xset [local-reputation] of myself (local)
4 ~. t7 ~+ Y+ R* Mend
0 k' {1 T2 F7 f( o: Q
' q5 v7 |1 ?% @6 o5 ]$ [to update-neighbor-total
+ w$ E, a; s& w4 `  ~: j5 q& ?* ?0 y  J* o7 Q% D- F: t- F/ ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- ~3 r+ F- y9 ~4 h  q
/ d; s0 N9 B: S1 F
- n; r$ G% X& a9 T" C' c1 [
end) _9 j5 s* O' ]" S, y
6 k, t1 f0 ^( e3 @( @+ Q) S5 s
to update-credibility-ijl 9 ^3 ~0 S- J/ c6 O

; h5 m/ v: ^1 g) y;;
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。# n5 |: y) K3 s; X! U5 D$ ]/ v
let l 0
7 {- q. }4 B' x! wwhile[ l < people ]( b' Q& k5 s* l# }3 X+ O4 N& B
;;
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) ?' s! R) Y4 ]7 h5 V% J9 x- Q9 D2 [) b: _
[& U3 [3 N- M% R0 [- N- e/ b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' j" `# i7 x6 M; B
if (trade-record-one-j-l-len > 3)
; w: J- X# v: c" w$ z$ v& y7 @[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
2 K2 W% y! ^: y* P0 Tlet i 3
5 L, s6 \# H3 O7 t5 ilet sum-time 0
6 L& s+ Z. o: Q5 A# |9 a" V6 twhile[i < trade-record-one-len]
+ A/ t, j+ ^8 ~2 v" _: g' Z! ^* i[
9 D5 J: R8 _' T9 _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 Q2 r; c' e0 Aset i
! J" Y2 v1 y# v# x1 N3 H0 X( i + 1)
7 ]2 `8 \! b6 ?! w& ?: a+ E
]
/ Q5 {& J/ N! L5 l2 ^; }let credibility-i-j-l 06 F7 E( [" y! p/ w4 w7 J3 ]  @6 r
;;i
评价(jjl的评价)
% y% k: _* k" y+ d* q+ nlet j 30 I8 |$ Y3 I6 z# K9 u0 |' S' q
let k 4
% p  `, r& O3 p1 Hwhile[j < trade-record-one-len]
0 E( L- e5 H, {8 R[2 F9 Z  Z, {; H
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 u' M/ V6 ?. G7 z4 O
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)
: P: g0 J! p+ C* dset j+ r/ U- w! E+ L+ w% i
( j + 1)

( o6 h( z; f5 y6 r" G( O- ?6 k]
  T2 Q$ J* z% F5 [3 @  [7 xset [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 ))# X! z0 L; [" X! h

  Y7 J0 S# A- U& x
! o' B0 ?) K% v( d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 f& I7 Z1 {1 Z0 u, u;;
及时更新il的评价质量的评价/ i9 r8 m* q5 g# y& G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( }( y# _2 U6 F' Mset l (l + 1)# m" }2 f, ?' \: p2 Q& {
]) Z1 T) m& R: X! T% V5 X8 B
end. i8 h' Z$ Q, v& l" ~/ {& i
+ Q9 c  Z8 h4 s& I9 }! [) n: V
to update-credibility-list# e0 x  n1 h" |/ p- y
let i 0
. |1 L* s: p' c* I2 d3 Wwhile[i < people]
  k. V; I* t$ l: \( `; x8 s; W[
1 y7 D+ x- {' `let j 0
( b* e( b) A; r" N* W' k1 F1 glet note 0& Z- W8 [) Q$ ^7 ?6 t# r% V  s5 U
let k 0+ {) E+ v, h' q  }# }4 `
;;
计作出过评价的邻居节点的数目
  _5 \9 S, P' q6 Q/ S1 ~6 C( a; Iwhile[j < people]. y+ w* p3 P3 |; a$ @2 G) g" @
[3 q) Q5 }) E9 |5 p: r: h1 V
if (item j( [credibility] of turtle (i + 1)) != -1)' _. k; ^0 m5 H; a3 D- Y
;;
判断是否给本turtle的评价质量做出过评价的节点1 J0 N, i% k; g1 I- u4 V# }+ u0 q
[set note (note + item j ([credibility]of turtle (i + 1)))% q. k9 T3 W! M
;;*(exp (-(people - 2)))/(people - 2))]

& g" L2 J) Y, jset k (k + 1)2 h6 N. t. k, ?! W8 W( d5 h
]$ S; `& i7 K+ \0 m1 C3 p8 w
set j (j + 1)+ v( Y% J3 v  ~
]
) P# t- l5 _# b' w3 Z0 R, oset note (note *(exp (- (1 / k)))/ k)
5 G9 i' p- v* D  q1 }( y8 R) Vset credibility-list (replace-item i credibility-list note)- X5 @% j& O: ^( Q; ^- M' A6 }* \
set i (i + 1)# P: t3 E+ X0 k+ A( [( B" K- Z
]- G" E" c$ S+ d& N: x$ u
end
% d/ K  k* ~4 Y4 `0 v2 t- m) g
: c' ?- E' f: A9 Z; ]; p. A1 C4 qto update-global-reputation-list9 T/ ]9 o" k3 ?$ Y- t" G) v" I
let j 0
9 N# I2 q+ k3 S. t$ Xwhile[j < people]6 f. }4 u$ D, t# q/ c# [- F
[
- v) z5 \+ v& g' S2 N# Vlet new 0! L- Q3 N# D5 D' c7 m8 z& i2 Q
;;
暂存新的一个全局声誉0 T/ G3 e% u+ S# B8 j( P3 l
let i 0+ x' f" s: l- v3 d6 {; @
let sum-money 06 Y. \" Z, x+ B( a& T
let credibility-money 06 i/ ~; A) v3 s6 U8 W- z! \
while [i < people]
# U% v/ {9 A4 F/ n' P[
1 i6 h, h5 {- ~3 hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- Q# _- C! o. `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* t' j1 z6 _! x6 r1 |set i (i + 1)+ z# ~; @3 V5 M( S2 @
]
1 G6 c% N2 r  u5 [let k 0: a: c$ N) E; F0 D" D8 s
let new1 0
! a! V$ U5 c2 W: ^- _while [k < people]
$ G& ]( f; l: A' G- h; y& Y[
4 e. ^3 N- [! b* n+ l+ F( ]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)
' G8 F% V% X! {set k (k + 1); V* B% ~* `, D7 w- x  K
]: X$ x0 m) n: c2 f9 r# E/ \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; z% X4 D- R# W* p# w! d
set global-reputation-list (replace-item j global-reputation-list new)
! }0 I/ j7 ]! B$ I/ f2 Tset j (j + 1)9 L3 J& \+ M$ @# r# o9 F
]
: O5 F: E* w  M7 J1 f  Y+ |end
  ]0 a( M) L# w
, Q9 K) J- l7 i1 n2 r3 y. d1 Y0 f& D1 r9 E

/ ~6 _' o3 D4 V% e* h( Dto get-color
% [8 j+ f# q) s  x- U2 K/ q9 q1 X0 ?' i
set color blue

, d/ e" {6 ?( u. J1 Tend4 l; U5 }. o+ c  r
7 ~9 ^/ [! n* \6 b  {; h& s: j
to poll-class. k: r+ X8 x* K
end7 R* J  B' [2 x0 V! G. ~

. D7 ^+ P. r/ }; s0 [, T9 Uto setup-plot1" \' P- G$ e4 i* I! E4 \

& q; }) W! c; D# w% H% I4 I3 Hset-current-plot "Trends-of-Local-reputation"
4 p+ @+ k$ y8 I4 B6 D$ ~" {9 I

: h5 _% f% R7 P9 C/ E8 b% B( qset-plot-x-range 0 xmax

7 O, y- P2 ^" I8 K% ^1 G! v" m3 y2 r1 X
set-plot-y-range 0.0 ymax

' Y& t, s; A7 g4 g) [end) A$ W* @4 O3 ^% |; r0 \" y

5 a, w# A# C8 V: ~* v7 kto setup-plot2
, p& o  f- E; A5 [
, A3 v3 B8 n( g" u, @set-current-plot "Trends-of-global-reputation"

1 Y7 j4 G- y9 B% \$ a
# e. _5 \7 {) _# e0 D" Iset-plot-x-range 0 xmax

2 q: W4 |! A3 U3 ~- ?) I  j" E& b* I+ m5 x: P* x% Q' |7 @0 c
set-plot-y-range 0.0 ymax
# Q2 L- `# ]& a( d7 Y$ |* n
end
3 D9 @9 T1 R* ~0 W
4 X) O3 e; Y; |) Eto setup-plot32 I3 ^% O$ l- X2 R" h
0 y& A7 B; t( `! }* v6 Q# u/ j
set-current-plot "Trends-of-credibility"
+ Z: {) `5 o3 ^; d+ ~# C
, `, W% ?7 E6 ]; X( Q3 |
set-plot-x-range 0 xmax

+ I! P* T, A/ F6 I* L( D# p% E
5 c0 e7 w0 k* Gset-plot-y-range 0.0 ymax
6 t2 ?6 C( \9 y: q' T2 G
end' x( w& s' }) h+ B2 {5 B

, P/ D+ s) t0 g6 c0 l% `' Qto do-plots
) f% ], n, K2 N9 uset-current-plot "Trends-of-Local-reputation"
2 _2 X, E% L' Z# n4 j! D: Pset-current-plot-pen "Honest service". b2 n. {4 i9 e2 F
end, L" a! W4 D) }

) v1 g7 ]* ]: P* M$ L9 ~' 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.. B& H& k+ M7 z' b9 `4 s% D2 q

: T" p; e, x; C* b8 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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