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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:' k( k' X0 p% Y2 Q% u7 t
to do-business
1 M* B2 N$ h( f# `4 f; \7 G rt random 3600 {, c* H1 W1 K' a: P( p$ t
fd 1
' [7 J% G2 {% U2 Z3 s ifelse(other turtles-here != nobody)[% I% j  S5 u0 X; n
   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.
) r/ p2 p+ H$ h. u( X/ Z3 w3 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) E, \( `+ E8 @9 s' x+ l: [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 B* ?+ R' H3 w# P1 a
   set [trade-record-one-len] of self length [trade-record-one] of self6 P( e% w9 {4 ^3 l2 k
   set trade-record-current( list (timer) (random money-upper-limit))
5 u) m# G* ^  j% c
( O" @2 _" E3 Q9 x问题的提示如下:* o, E2 F+ e7 @1 L
9 u0 N: l' |8 ~+ [7 ^( g, t) N
error while turtle 50 running OF in procedure DO-BUSINESS( w; i; _% A% w& a6 {
  called by procedure GO
" z* {; R# Q, f( p) VOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ y4 o& }$ D. P
(halted running of go)
  ]2 ~/ M& `" {7 O- G) j% w$ E  v+ _* g! [
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~~( g8 A" X2 c7 D# F2 \. |6 u
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
: Y8 y5 o+ [5 T( Pglobals[
& I% |1 ]3 z, P% x) f  i& Qxmax" p, J7 a: ]8 p  p
ymax$ g! h$ I; I) o  \; N; l4 T
global-reputation-list9 @9 }5 W8 B6 B

0 _# G4 G/ U. G4 u! m7 ?/ H  C;;
每一个turtle的全局声誉都存在此LIST  p( }( N7 t/ Z" C9 X
credibility-list
+ \: m* ]9 `4 }- p;;
每一个turtle的评价可信度
1 G9 a; ~( ]7 i! n# zhonest-service
! [4 _8 d0 y! l9 m+ Wunhonest-service
. T! @- }; ]- [$ V5 foscillation+ Y- y5 o& k+ @$ @8 X6 z( ~1 n6 X  ^
rand-dynamic# o, N# r  B- S
]4 p# {  H1 l/ I8 C) `

1 s% r9 m) a4 a3 k4 ^0 G+ x$ n/ c8 Nturtles-own[
  s3 i5 N& u% M& e3 R4 e0 ztrade-record-all$ }' L& T3 ^9 R
;;a list of lists,
trade-record-one组成
" e0 m3 f2 t6 I8 Itrade-record-one2 I4 D4 y- S& f+ ]; U5 p$ P; O; 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
% C$ m: T% O% x: g* E- K
2 m5 A4 j* O( z6 J4 P- E;;[
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]]
* h+ B3 [' A8 O" P( Atrade-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]6 n8 Q- L$ Q4 l' p: z- r
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  ?0 A: i; ~( e3 I% L$ K5 \% \
neighbor-total: |5 D$ o" B4 {( e% x+ p. n
;;
记录该turtle的邻居节点的数目
" l0 D$ P) s' P! S+ ]1 F2 i6 Atrade-time. K: X7 D% t9 w3 E* `+ }. c
;;
当前发生交易的turtle的交易时间$ {, [% B. {6 A; _
appraise-give- C; I  Q1 k8 K8 z
;;
当前发生交易时给出的评价- g" t1 a! b- T2 L- t  D
appraise-receive
+ ?4 q3 H4 l1 e6 [;;
当前发生交易时收到的评价
0 h# T, B* m8 Z( @- T, f0 Eappraise-time
4 J: Q( w$ q, x& Y9 z. A' ?, k;;
当前发生交易时的评价时间$ y* b$ A; A: I, D2 ?* k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 @  v0 C2 R2 J+ C
trade-times-total
. D8 x% w) u. a' B- v;;
与当前turtle的交易总次数- a9 a( K- [, k0 O+ c3 y( J
trade-money-total
% a! R/ ~; f; X/ O;;
与当前turtle的交易总金额0 U+ N: o4 \( x+ F, m$ `8 Z6 T
local-reputation
4 v4 ~6 ~' W3 Q. v: v; V% ^* aglobal-reputation5 \; T$ X7 Z1 [% q- b
credibility
2 q6 p1 o, q# i2 Q5 Q;;
评价可信度,每次交易后都需要更新# _/ B, W6 t! V1 ?* u& ?8 w
credibility-all3 ~3 ?" I9 w& n- M
;;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" Y, R5 a2 `4 t) {( L4 \

. y; X( o5 j/ M$ m- w+ };;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/ @3 V% p3 j# i& y/ d1 @# R/ W
credibility-one' @! v6 j- @# H$ t# C+ K# a1 z5 A4 F
;;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
: Y& v' q& t: V  }4 vglobal-proportion
& y' T8 l; ?: K' Q1 |( @customer
# R  O! u' u7 hcustomer-no
: t) f1 X: J, j6 ztrust-ok1 L' ?1 m! O, u7 d0 A# y
trade-record-one-len;;trade-record-one的长度
+ ]' l3 B8 P; ^% a]
% M& }( u# }! g; p/ y9 U+ L% n6 \, o3 O
;;setup procedure! H' ?1 E: R+ S- o
; m' h4 I" R* }1 L  l4 a; @
to setup0 K3 B' S5 D& _; N# g
9 y6 R3 @1 s7 z- A: T3 X# ?
ca
9 u5 o% Z7 _- Q" b! M, ]1 M7 w

2 w- ]& ?  M6 e6 [7 D# q2 h  rinitialize-settings

) J  n$ w; X: k2 q* u3 D. I! v$ F5 ]- i- ^
crt people [setup-turtles]

0 }! A3 ?/ k% p, S! l! g& R* G% y1 w2 m$ o( P- `3 f
reset-timer

6 B' T9 l$ ^5 t
1 A8 v! g* b# Z+ _poll-class
# a5 s9 Z6 q, m* ?' s
/ \( ^9 W5 Y8 Z( O, \6 I* r
setup-plots
" ^( h, y5 N. K1 c0 R
+ L6 w3 k5 H' x9 n
do-plots

- |. D3 V% Q5 T8 o4 Vend  v) _- V0 p% T  |0 U! A' p

* b" m- p& B4 g" W3 dto initialize-settings
$ Z$ S4 H3 v( g  p' h* O$ N+ E, A
set global-reputation-list []

9 k( q: j% b" m! C
$ h8 q. U! T' o0 C9 s# f- tset credibility-list n-values people [0.5]

6 P" F$ e4 u6 l$ s- }) E. ?
) @8 `2 ~, a5 k1 Q/ |$ S: `+ kset honest-service 0
6 l  [5 t% V1 y7 y5 Z
1 E. j9 N. T0 d4 y" r9 r7 s4 `
set unhonest-service 0
) l* _0 S9 z- V3 _6 g

1 c+ p0 x) N3 c% c% Gset oscillation 0
# f6 R6 B* ~3 R  J% ~

' N. \$ A3 f( B7 }% N6 c/ Aset rand-dynamic 0

. q. ^/ i, P7 ]. U) E! N/ E1 ]end
, W+ x/ X! x4 {6 b1 x3 ~8 H3 P5 u. j) y' @8 F0 S: Y, ^9 k; s
to setup-turtles : d9 c( Y2 ~6 h% A
set shape "person"3 Y5 J" c& E& O8 Z' ?+ _# m; X- }
setxy random-xcor random-ycor8 y' |+ ]6 F; O
set trade-record-one []( V  Q" o% S9 ]3 J1 Q

- ?3 ?7 a1 K; n/ `: U1 Gset trade-record-all n-values people [(list (? + 1) 0 0)]
; q$ Z4 a. O: p8 I, G+ m

+ c5 g" ~3 p' h; r' k  I7 N! |3 Sset trade-record-current []
8 O2 c. H5 g% _3 Iset credibility-receive []
3 p  A# b/ S- V* d0 ~4 bset local-reputation 0.54 C& E3 v5 L# H2 O
set neighbor-total 0
$ q% ^9 q- O9 G3 @6 T! q/ E7 gset trade-times-total 0
" t  D1 F' V5 h' bset trade-money-total 0
, B' O# i* q# o8 x' K% f5 Jset customer nobody
3 q9 x9 I  A' E/ rset credibility-all n-values people [creat-credibility]
2 V) M/ ~# l% u( R" Aset credibility n-values people [-1]* X8 ^+ |1 M( I  [4 @2 Y
get-color
" s: o2 j0 h' S

( |, p' z% T9 ~# q0 b: o# cend7 m* W2 _+ c! D. W4 }# z

0 G8 Y  \! y: S4 qto-report creat-credibility( F  _% M5 k6 p* m+ ~+ j7 C
report n-values people [0.5]
  x6 c4 D% k6 Y: i4 p  Z% s# ~end
; u$ L$ r) v/ T6 |. W) x+ R. _0 `+ d  M8 v
to setup-plots
& b6 G# c7 ]/ d- F* A. M0 r4 i) u  Z
: \- K7 n- Z* J  A' p; u8 ~  cset xmax 30
' s7 Q4 q4 j" I/ }, T- V2 z
$ ]  O) l. ?2 X: M5 k# }
set ymax 1.0

3 [; X1 P% U# T" K5 x  _9 q2 E2 J6 E* m% d9 `
clear-all-plots
! G! c- O6 g8 k% m( @

  f& S4 u7 ?1 m3 Q, Q% }+ |setup-plot1

# d- R( y5 ?' z
$ s0 Y4 h( t9 }) a; Esetup-plot2

  m9 w7 q) M" Y# S/ d# c  Y
6 X: T  Y8 g1 Y0 z# E  p- U8 Jsetup-plot3

( h( L0 k; c; {: v' k9 cend
% w4 y# M! {" p( |3 L- D, u7 ~; S2 s5 b5 O: Z# V0 z) F
;;run time procedures' O- V' Q- {6 S  @

1 g: a5 l- U+ |/ X4 x4 yto go4 {: M, q0 I1 Q; j' h5 t) G4 l0 V
/ e. k% }* ^1 b# d4 {; A% o
ask turtles [do-business]
' Q& F9 ^3 g1 _0 V  _0 J
end4 |# T8 T& K1 i5 l+ G7 x) L. V( R

* v5 r" S7 q7 l) _+ [+ _to do-business . Z; q8 M8 A' M; e

# h" j% i9 Y* N+ h, Y6 ]$ _' Y9 \0 L5 f
rt random 360
& m1 x% T- M0 b+ \

* X6 Z4 o9 T+ ~6 I" P5 v+ Mfd 1

+ w' t, c/ q- J( T1 }. z% y! ~9 B& b0 z
ifelse(other turtles-here != nobody)[
% v7 R- N8 C7 ~7 W  f

6 a$ K; [' X% [- c' n3 g3 [set customer one-of other turtles-here

0 D  K  F; a: u+ G3 W8 x
5 [, G. z8 A% d- q4 w9 ^;; set [customer] of customer myself

( I) H2 Z2 V: X1 o6 M7 c+ x; ]: a" f: Z0 _# u! [
set [trade-record-one] of self item (([who] of customer) - 1)2 z0 [/ K& a- p6 c
[trade-record-all]of self
; w4 {1 n# `) t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 o; {6 J- c) ?9 _1 M7 }6 Q' `1 \3 K6 {, K: K" O
set [trade-record-one] of customer item (([who] of self) - 1)9 T$ k1 f! u8 C2 w! h, P% c  r
[trade-record-all]of customer
  F" [. ~$ Q3 ]/ l' ?4 ^

* J7 k( ~5 u1 j! h/ D* q( p9 _set [trade-record-one-len] of self length [trade-record-one] of self

2 R, g- s0 f' w$ u3 L6 d9 v4 x9 L( j4 @8 w  |# t6 f
set trade-record-current( list (timer) (random money-upper-limit))

8 ~6 G+ Y* y7 U
9 _' I% {  {4 f% Jask self [do-trust]
+ F( K# @; ?2 d6 {) B: `  `;;
先求ij的信任度. n9 [: u1 }2 t( W6 \0 K7 |

7 d' L: O  {6 K. P4 Mif ([trust-ok] of self)
+ l% _% h! h! v;;
根据ij的信任度来决定是否与j进行交易[
1 i  Q# O* G, @% P3 Q2 sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 F5 d( H! l4 _: K+ l, M) @! a5 h" o& p$ I
[
' K. D0 m% A) V" X

0 F0 C' _% ~( M( z" jdo-trade

: x: f" L( q6 H/ ^- z8 n' i! e, j6 N
6 K3 y9 ]& M4 V6 n  `update-credibility-ijl

+ t0 D. d2 i9 h! |$ K8 E5 w8 g: f" w8 o" o
update-credibility-list
+ ~+ i4 n* Y1 {9 h/ [2 l

* K9 A6 \2 q# R0 E. U0 `9 E. x5 E& w  v0 E
update-global-reputation-list
& R) K, |4 K2 R/ T) c- M

3 R; B4 w4 u7 _/ _; tpoll-class
3 r! g& \, K: S. Z* y
7 u2 L. V6 |1 ~5 ^; F
get-color

6 t/ E: N* m% B7 e; {- i
( d( x* [; X6 X4 b) z! D" y]]" j* _( j- g$ W; O7 w
, _( N' p% Q. _( q; n1 J! g6 \
;;
如果所得的信任度满足条件,则进行交易
  S  R! V: U2 c6 B, `7 ~: V' K6 [6 V6 p1 }7 o0 o
[
$ B2 j. A( x- r  L
! H# g& ]" `# }* b( U
rt random 360

! A4 A, E% N/ S& I1 p$ I, m8 l3 L8 W  ^+ |2 o0 e  L7 T0 V* ]
fd 1

& `9 Z! q+ c! N# {  n1 ]8 }- f/ G
]
$ n$ a$ Y7 S' y+ L  H; k* @9 J8 y

" E% v5 v( o6 pend
8 _3 M$ V2 K4 F" L
0 ]: _2 y, |: K  ?  f
to do-trust
8 x3 B9 M9 u3 T2 iset trust-ok False; e4 r) R5 A) S7 d

  j6 z# K9 X# w) c( ~# b

- N9 H+ \& w, }/ G. w( ^8 [let max-trade-times 0
1 V+ Y7 Q+ G7 V% V. W" e: tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" h3 k; v2 x4 J1 x# F* f9 [
let max-trade-money 0
/ x$ o1 r! o# g! U$ m: n9 z8 Q, E( B: Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% @+ s  ~. `! G7 G" [% T$ Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) C* P1 z; h5 K! G' \7 ?8 s8 G  L. ]7 l3 o; w1 [- |
5 c8 ]  I9 M9 b: Q( w  g, A
get-global-proportion
" p( i  C8 r! W) d0 g; J/ o9 H3 }let trust-value
3 u; f& H6 s6 j/ {, o4 I6 Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" K3 s2 E* Y* Oif(trust-value > trade-trust-value). b, d6 T1 G7 O/ g
[set trust-ok true]
* A, j' s$ X# h1 o" Dend. j: u9 j2 J! j7 O' K. D3 r
& z2 U" L$ w! z: [7 U
to get-global-proportion1 @7 ]7 ~) S$ K! L* n. \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. Z* r4 H9 H0 [6 g[set global-proportion 0]
( l! u8 e7 J* |0 x; o( i[let i 0
6 z0 v$ ]$ o$ y; B8 e! ]- B% [$ hlet sum-money 0" T, O  X6 R) w+ f! i0 a( c
while[ i < people]
0 _* j7 R1 {5 Z) w+ o[$ e( h) V! S6 o3 k
if( length (item i
; M  O* Z7 p" z! `: y# C5 T% ]  x) X[trade-record-all] of customer) > 3 )

0 r9 F) d$ z: T7 A& d$ |% _[- F- B% ^: {( t5 K3 h: o7 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ L* x# w: p- M2 c
]
1 F2 P5 X; j! K* H9 _) |& n]
7 `6 \1 m  E' k0 slet j 0/ K! q# J% v7 x6 T. C/ b
let note 0
( N$ F8 B: w; f$ V! owhile[ j < people]
5 @, W) P% S6 k, ~1 U[. F2 ^$ g. w1 V( ?# F8 ^
if( length (item i0 K. y- r: w* a3 d
[trade-record-all] of customer) > 3 )

8 q9 o1 @$ a% x; e+ i. d" `: f* N[
" X2 i! R6 x6 `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), ^' f3 t4 y6 O9 ~/ @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 j6 ^+ c% g& }3 [$ O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& X& d0 Q$ K7 O- j- ?$ n]
, r7 _  B: S# h$ @$ N]
* a( r% e% n5 \2 q1 N) O+ iset global-proportion note" }5 j" z7 I7 N( v0 G- ~
]: h, b, C9 O% O' c: l& Y
end$ z1 B8 g. s* L3 e( R

# a( }+ W  c$ h* d0 A7 v2 Zto do-trade
3 M) G2 T5 H7 U3 @( e; z# P;;
这个过程实际上是给双方作出评价的过程
, s5 T' J9 s1 P' \0 d1 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# o  i- l1 ?  P0 g+ Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* A$ U' {7 @& }4 x$ P" T. o' ?set trade-record-current lput(timer) trade-record-current
$ f7 G0 S' R1 [9 Q! L# m# R;;
评价时间7 E3 s7 Z6 O& A* z4 O
ask myself [
  t: R# ?& v- w3 Cupdate-local-reputation: g) n" P3 [0 p" \
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 O4 ]$ o/ U( r8 ^7 @4 x  Q]
0 E* b+ Q8 t* y1 bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 M& \4 E7 V/ |' f. q* V3 Y
;;
将此次交易的记录加入到trade-record-one
' i9 |- I% G# }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 O  G) G1 e1 P6 ]0 N9 Mlet note (item 2 trade-record-current ), m3 s, Z& o$ o9 n6 D  p3 k9 w7 Y
set trade-record-current
# A" h* \* n3 P5 q+ a1 c(replace-item 2 trade-record-current (item 3 trade-record-current))

8 Y: \0 V5 H+ X/ cset trade-record-current; F: q% V  S5 b# M! o  B
(replace-item 3 trade-record-current note)' [! ~+ k9 ~6 E; @$ z  j$ W0 @* G

2 J' D' P' D+ s* O2 h8 l$ o8 m

( L" B& @( |1 F% Wask customer [. F& y2 Y! }0 W9 I' i" |( V- L
update-local-reputation. O  C  H: J. x7 [
set trade-record-current
; `2 D% m( `( U5 m% n, s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  }. Z' p$ C& o- B# N; e
]# p8 l- l/ L5 ?2 c( D* N  y

: |6 o9 f5 \) a2 [

. X/ [; h/ N9 b2 L3 K! Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 p# b* M4 w1 L. t4 R

7 P9 i4 o) D2 @$ n4 ?5 `9 Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, `8 r" i2 ]& ^7 k* u8 H5 k;;
将此次交易的记录加入到customertrade-record-all
/ t" I) q1 U, ?$ d3 qend7 ^% Z) @0 \! }8 {/ V- Q" e

( w- R2 g6 [- `; T2 u  J& q4 W. hto update-local-reputation. }, x! |; ~% M+ m& Y' l- Q  f
set [trade-record-one-len] of myself length [trade-record-one] of myself9 ?- {8 ~$ z8 W) Z3 ^
1 `9 x5 M/ k$ ?3 {

1 I. r% ?+ d: z0 @+ h;;if [trade-record-one-len] of myself > 3

& h' g1 ~2 g  Q- ?update-neighbor-total$ f! F- |" U; |; X7 p
;;
更新邻居节点的数目,在此进行! m& b6 o( |4 a5 v! ]+ C/ l
let i 30 ?9 ^% \) p5 \5 C, L9 k
let sum-time 0
$ w9 \( U) k' |; s. W* N5 Lwhile[i < [trade-record-one-len] of myself]
( f1 {- c: Q' P; I/ }[
, n2 F% F4 B4 g2 o7 i) U3 c3 kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( B. e' K* }6 C  e  Q% Z6 H
set i& @) ~/ W8 q( N
( i + 1)
/ u& T& E: g0 r# Z! v! z6 u
]
, x) y1 \& g+ x  Z$ G0 w8 @6 plet j 3
# G7 y  Y( ^, plet sum-money 0
% k' P+ T+ a& S0 ]9 s0 Qwhile[j < [trade-record-one-len] of myself]7 B6 N: ^6 h5 Z- W. g) I- l
[
. }/ R' D' ?: t! N/ f7 uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  f9 o9 g0 |4 R+ Fset j% D. p4 H" `6 s4 b3 [# R
( j + 1)
- F1 J* q* I* U( D5 a  {
]
) v" w0 h# T# d2 Clet k 30 i5 _+ y& m7 n( O, i  m$ Z6 c
let power 09 T, ~( g$ i# E; j+ N6 ]# a
let local 0) h! P$ X  {$ k  a
while [k <[trade-record-one-len] of myself]' p! L' u5 G% m* L' B% f! r0 n
[8 ~, `/ ^* c/ M. }/ y  H% V& g+ u
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)
+ `0 o( P8 L( R- vset k (k + 1)
) C; k7 Y- T& K# R# _& k3 a]5 X& K; q$ k, L" [2 u* i, k
set [local-reputation] of myself (local)3 m0 k+ i( D% U9 J2 n. L
end
" a3 C' @$ G5 Z4 n( @( g4 F  B/ `5 c4 C( }
to update-neighbor-total1 D3 x( b6 T0 Z6 J1 r5 {5 W
1 @" T0 _' [4 }: }- T' P# {7 s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 \& Z2 y  K2 x2 C
0 {2 z) t4 R+ v
6 c$ ^2 S" R1 s
end/ k0 f1 ^8 y( N$ P# u

  m1 g# c& i4 d; w- }: S1 p8 [to update-credibility-ijl 5 w+ N( Q( }7 s3 s! X

# C7 v$ V2 y, b8 _;;
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。" V) x$ P6 Y* f4 v
let l 0
( L! W8 q+ \' H0 ]while[ l < people ]( S+ I# y# l$ o( f( s! }0 g' b: G
;;
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
  l4 w' m+ n! ^2 Q6 a[
, j3 d; {* o, G" X5 U  o5 Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, b# C; U) l, W; jif (trade-record-one-j-l-len > 3)
6 b% f4 G0 f% x[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( ^3 H8 \% o$ n7 y. s# e4 o
let i 34 z) g, O- X# e
let sum-time 0: b) W& F+ V4 N! W% K
while[i < trade-record-one-len]
) P! g8 \1 E( B5 H[$ |  Z! e. B' c! N2 F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  M- D' \6 |( b. R/ M) lset i7 V/ ^; R* T% X; D
( i + 1)
, X% e) d4 [( q7 I
]
; a" p$ n3 v- L+ F2 z9 q' i. Tlet credibility-i-j-l 0
/ y; {: D1 |6 B;;i
评价(jjl的评价)
1 V& r# @) R- P. c. ?6 plet j 3
2 x( r1 T2 f0 z8 qlet k 4
0 z6 \$ ^: \) H4 K- X8 b; zwhile[j < trade-record-one-len]+ W0 _( z5 @) h0 d$ K+ d4 N- u' E$ M
[; I9 {' f; ]0 B% I7 \1 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
7 a: e4 o: i% j% _( p& }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)
0 S2 g/ a( X# a+ hset j. J+ C! {- }7 x0 R$ ?) L8 C' G# g
( j + 1)
  l" h8 X+ B* t6 f2 ~" x
]5 p) q+ {8 \1 v% O( u& [
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 ))
# g' G7 U9 \9 R5 g0 l0 o3 n9 k, {8 W. n+ K" A
3 p) ?5 z0 D+ I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% E8 ^2 w7 F9 a! w, [+ {1 w. M; w. D;;
及时更新il的评价质量的评价7 {6 H- e# S+ B; ?0 q1 ]. F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( P! K& f, Q# @4 P$ C6 [set l (l + 1)+ y& |. d0 |# D
]$ t# ?3 W) x! h9 l8 W+ c7 c
end* B8 M/ o$ I* U0 N6 u. R3 ^) \
4 m% ~+ B" ^+ k) J+ s' ]$ x
to update-credibility-list
5 _: }) `5 A$ S) B. J0 dlet i 0
1 ^1 |; J7 ]5 z! \. Z# s% u( M3 qwhile[i < people]
7 S: Z  a; a8 O) @: J" m4 @[
) W1 g* K! i$ a+ B% z% _0 ~let j 0
. P) T  V# r- [let note 0! c! v2 f9 V! V5 G9 B5 z$ ^
let k 0
7 C# u$ |: J3 q3 b- m;;
计作出过评价的邻居节点的数目
+ p- G7 ]5 x/ n! o5 _7 Y! a1 n0 x1 ^& nwhile[j < people]
& E6 y- ~# ?3 T7 M2 S* B" F1 v1 M[
; L% j; _8 A: H8 _if (item j( [credibility] of turtle (i + 1)) != -1)
* y/ B0 v# {2 I8 V4 b. [0 G# \;;
判断是否给本turtle的评价质量做出过评价的节点/ ?8 i8 H3 l8 q% S
[set note (note + item j ([credibility]of turtle (i + 1)))
. \* ?0 X( y5 v1 j, K$ `;;*(exp (-(people - 2)))/(people - 2))]

0 E) a( E% D9 h5 P8 y: Gset k (k + 1)
  `4 R& x" u( e7 T. F" }7 B8 r6 Y* N( Q]) E$ ?( k+ J1 X; i9 r; S7 O
set j (j + 1). V$ M/ b$ |' m  g% L4 {% n" r
]/ x1 f1 @1 Z/ S, Y
set note (note *(exp (- (1 / k)))/ k)
, g  ?$ [4 E" Z9 aset credibility-list (replace-item i credibility-list note)
) X# b# V) K# g8 [set i (i + 1)
2 ~& c( a4 _# b) p  t8 D  k) B]
0 k6 G* \$ \' M: P$ v6 e9 Nend' z! F* h7 g& `9 j; p4 p
/ Y. l: K4 U" I/ T6 o* D, L# l* n
to update-global-reputation-list$ |/ d+ x6 n6 Q
let j 0/ H* N- {) b- q* F$ \0 G
while[j < people]5 E1 T# L1 D; U9 }
[2 V9 y$ r; q5 R4 J
let new 0, ?5 z3 u$ k* X, N$ w& K
;;
暂存新的一个全局声誉
- ?" Y! b: l# x3 H# \let i 08 y, d3 o: b* Q# t" t1 k2 E+ x; g
let sum-money 00 a' T8 Y/ `1 ?4 n# J: U2 r
let credibility-money 0
" W2 |0 g; Z  e. I9 ~! }3 V8 D1 Jwhile [i < people]
  |  U+ Q$ {% o! q/ R[
" F% V! p, Y: x1 e; v" z, Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# P* h/ J8 h: r5 ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ U' p/ |9 z8 Y, h6 mset i (i + 1)
$ s/ a0 E8 `3 o: l]: o; _3 p# e0 U  K. V; `
let k 0
4 N, {% q  C2 v4 x! C1 Mlet new1 0
2 |' D7 |+ H" D$ b7 s8 a, Gwhile [k < people]" j% n; `" s$ C4 A( d
[
) a% }9 }: `; G& r! ~! {2 l# sset 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)$ o% H; D; m) Q5 R
set k (k + 1)
+ O, g" r2 W3 G8 C# v2 T9 L]3 S. S8 z3 c- @2 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 i# ~3 Z) [; ?, f, Aset global-reputation-list (replace-item j global-reputation-list new)% E8 T5 j$ F. }. ?, g0 G+ m
set j (j + 1)2 n& {" P" \, a. D* u: d8 U
]" j4 C4 [1 f+ h; q& [! L: s
end
( ]) N9 S  c( E
5 B- ]  i" m  s# [+ W" M
. c0 q' @& f6 {! ]
3 e$ I& D1 {. a/ s) _, yto get-color
$ Y+ y" n$ [/ P! F+ }  X1 I
7 g2 [, C) B: X8 C8 ^set color blue

& M& V) ?8 X. d* E2 pend, E  m( d7 [; Z4 ?: F4 @1 V% H

& D$ u5 e& Z8 O5 o$ h3 ]5 S" A( rto poll-class. j; B1 M; d) ]1 `: z  S! p
end3 ]0 F, t7 ~1 R$ ?; V
- I0 ~9 T4 T( b7 l
to setup-plot1
1 J6 R9 B. Z8 _# ^+ N' i) b3 T7 j2 X; g+ t' p* c9 K% P& `( D8 [
set-current-plot "Trends-of-Local-reputation"

8 f0 ~* D& _8 L) o" c& B
; H* S) ]4 ^8 G0 k" n$ _6 B- Tset-plot-x-range 0 xmax

; r' j5 ?9 n2 }: X" C: {# P* v9 x5 u7 M1 J! i& ]
set-plot-y-range 0.0 ymax
9 y0 S1 J& h$ ?
end! p3 y7 ?1 z% C3 T; J

$ [. w1 u; S0 V+ B; ]/ y+ ]to setup-plot2
3 j; E8 j/ y9 F2 M0 O6 h# M: y  ]
( ~( `6 K' @/ h! ^4 B' v3 P, A& kset-current-plot "Trends-of-global-reputation"

9 E0 ?' ~( p/ i# h3 a/ U
" I6 ?( K& H* ^& n. D6 R$ \7 Bset-plot-x-range 0 xmax
; N& s/ J2 {: w# i/ \
" w4 y0 p: s+ W. y0 a* q9 A
set-plot-y-range 0.0 ymax

+ i5 [5 {, \8 p; P* |; U1 Tend6 G- s" }; S# V/ C3 ~" e/ n

0 `8 X3 ~/ L% C$ Ato setup-plot3! J$ U$ h% K$ \$ V7 A

7 m& A3 O- y" d0 I/ A9 ^! T' T+ Wset-current-plot "Trends-of-credibility"
  s& ?9 F6 N$ b1 Q4 H
3 C0 F) O2 @. m5 I- A
set-plot-x-range 0 xmax

* G% P& T/ T, w7 [0 K6 X1 h' e7 s
set-plot-y-range 0.0 ymax

9 K! e4 [- b5 Q9 {2 U) g5 }end
3 R3 S, {7 S4 ^" m! B2 V4 u* T; ~' s- d$ G( x- ?* d) _) d2 w
to do-plots
0 W; O/ {% B) O. K/ ]set-current-plot "Trends-of-Local-reputation"& l3 W6 D) j& o# V
set-current-plot-pen "Honest service"; _$ Z4 `- `- w, X; _/ [
end$ S1 _, M& f% e  R' e" m
2 m4 @8 q' |- Z6 D
[ 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./ g0 h8 t1 a, P9 R1 N

4 r6 d' D& K8 d9 O  n+ T  J9 F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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