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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:
: _5 D8 M, ^. g$ Z$ Z5 ^, G" r1 Wto do-business
- {) K; Z* i8 f, Z6 }5 j rt random 360
$ ]* g6 j3 @9 S1 x  o fd 1. b9 L3 w, J; w& M7 q
ifelse(other turtles-here != nobody)[) w. g, b5 a  L8 O8 j6 m
   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.3 `& N! V! j8 a4 D0 Y( w9 x
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) _- j* ~; s  p  P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% \/ ?8 H$ s6 M. J7 D5 k. ]   set [trade-record-one-len] of self length [trade-record-one] of self" Y! j' \6 f+ E: ^3 ^' W6 }
   set trade-record-current( list (timer) (random money-upper-limit))4 _& H3 ^/ V& N; P' ], D1 K
, b$ ^$ H9 |+ ?8 g  i
问题的提示如下:+ u$ [- f# @' _- M9 m6 b

6 b% |5 S: m& m8 ]9 [: Xerror while turtle 50 running OF in procedure DO-BUSINESS* f# j! Q  i- T+ ~- X6 ^
  called by procedure GO6 R7 \/ f8 J9 b2 a, r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 `6 h! Z* B/ G, A
(halted running of go)  D( _2 X7 c9 F+ x2 N- [
4 m+ G1 h* t4 }7 V% L. D
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~~
# \$ ^$ @+ @' U+ K& q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; m0 k+ j1 @' e" `+ M
globals[6 a0 p4 b% z* d+ m7 c0 S
xmax! S' d2 `2 ?/ u4 U; a
ymax4 [7 a+ r( @5 b; o8 b& c. x
global-reputation-list  r6 V, y9 g% N8 {" o

( g+ t8 M! }5 A/ T9 P7 {;;
每一个turtle的全局声誉都存在此LIST
& \' B1 ^+ H6 D0 hcredibility-list' B% K0 R4 Q  w
;;
每一个turtle的评价可信度( L+ \- L; _3 f1 v
honest-service: @- h9 H% n: y: ~" X, c
unhonest-service
4 ?" Y' T3 y/ P8 Y2 W1 D8 {' woscillation
, i9 _4 n4 e' w, {0 u9 o0 ]7 Q; e4 rrand-dynamic
8 U* }  Q0 c9 B+ H]
; w: ?, y  i  A. y+ H% F! Z5 d7 l7 ]2 G. e) B2 c
turtles-own[0 Q/ F6 o" H# O1 f; A% F! y
trade-record-all
% ~. b/ S3 i: l6 l! F;;a list of lists,
trade-record-one组成
6 y$ O9 k0 M  G7 }+ D' wtrade-record-one
; p! n  |( F2 C( z$ P8 U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 Q  D) O/ `& N7 i
' l9 r4 n& P4 |: @;;[
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]]
; Q2 O( |) C+ t6 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]- a/ e+ Z; w6 a7 }4 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, b  T  x- i' w, i
neighbor-total, w1 B6 Q/ a9 M& n; q5 \
;;
记录该turtle的邻居节点的数目7 i% l1 Z/ |- m* I
trade-time
( Q3 t* p+ o: g# T# ?) H;;
当前发生交易的turtle的交易时间7 _3 X5 y0 W" g. a5 x
appraise-give& ^% z2 c  a! ]: a6 j$ t
;;
当前发生交易时给出的评价
; D$ Y, Y0 P* n9 K7 ~* C# dappraise-receive( ~* b( [5 G9 {9 N/ u# y5 s" {
;;
当前发生交易时收到的评价1 m' e: g7 d+ i; [, L7 k
appraise-time
7 w  t* t2 p/ G2 l;;
当前发生交易时的评价时间6 s, z8 p  f4 o' C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 f, d. a4 C1 dtrade-times-total
9 l0 D: [1 K3 A  V* Q& ~1 d1 x$ G;;
与当前turtle的交易总次数
) A( H! @+ Y( T! Q  T4 ntrade-money-total- f$ q! ~' n5 \9 z( x+ m9 q
;;
与当前turtle的交易总金额3 i- N( V: C0 t8 T4 t6 c* k
local-reputation; A) @7 n. v- E/ Z1 \
global-reputation
; x1 u) W; O& p1 Y2 g; d0 vcredibility
7 f. u7 J4 e- i+ ]' f- d1 h;;
评价可信度,每次交易后都需要更新
# s8 k$ Q) y3 e0 c7 c' B! dcredibility-all! A2 {% O4 L. K. Q& G8 `
;;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& e/ B. a: }7 c( W* O, w' k

: O; I$ s! V, e$ L0 I2 ]. Z;;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( ]' {: _9 @3 h
credibility-one
; V* L+ K6 n5 U1 Q6 G;;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; a0 V$ G- L2 R& y  S2 P, r$ m. u
global-proportion9 G" G% v) P, k5 A
customer% d$ ^3 a# h5 f# N
customer-no- W1 a  o7 f. t$ |( P. T! P: H
trust-ok4 L9 S: e  f- j
trade-record-one-len;;trade-record-one的长度
: k4 j& h" n2 f7 {9 ?. ^+ G], s) b7 Q! n+ T' |0 E6 h& Y9 ]5 i$ o

1 B3 j, t3 v) J, g;;setup procedure  P: e5 \4 x  P: p' e, [1 P: [

- V5 D3 c5 r# r1 [5 ?" }to setup( {7 G3 L' O% s* O1 w) ?7 d
/ j* g+ ~8 ^: Z3 s) h5 t* E
ca

0 K2 t& f3 V2 H9 X& _9 X. D' e" N3 K% S( T1 ^& {
initialize-settings
* y8 ]( ~7 g, M
; C9 G" I& |5 `4 c
crt people [setup-turtles]

8 \7 l. ~% W+ `& Z3 e& I6 D/ n- H6 f; s  C& b
reset-timer

3 B- m0 s% s5 L" b/ H& ~0 E" w7 ]# B6 ?
poll-class

! t' j& z( d/ _, C( K. ^: I( j/ v* D2 Q% G( G* x
setup-plots

$ l& Z! h8 I3 J. F/ ^7 W8 b: c  c- u- i; a2 y
do-plots
; l+ r# A+ T& P: a" i% y4 ]6 J! N
end; E! q9 R( C0 ~( x+ _6 `

+ A& V3 s3 G( sto initialize-settings9 H, A. W3 t, g

9 x, l8 _' Z' t" kset global-reputation-list []

5 v7 f" ~: a, `3 R& t/ t3 `+ V' M0 p- _1 ?. |2 X* c9 L3 l2 ^
set credibility-list n-values people [0.5]
; K+ S3 z& t1 w! \$ i. Q% Q3 Y3 Y

' a$ Q# J" h3 \. r; @# _$ aset honest-service 0

! R; J( ~2 }! b( M1 z
: K. l. w( S8 F6 a% Qset unhonest-service 0
, a/ S$ O* G: B6 l: P( A
/ k& ]8 Q7 m7 _0 |( Q2 N2 \* |
set oscillation 0
/ E# r* s2 S( l# g6 Z) g9 A6 d8 N
2 i$ S% r1 j0 F
set rand-dynamic 0

1 f" ?3 c% b' P, v& B5 rend# b) T( n4 n/ }3 l
" h* l1 j# f) y* T' I
to setup-turtles 0 d/ r! T5 [, k: |; H
set shape "person"' W% E6 c+ i( O4 B; B
setxy random-xcor random-ycor
" |1 Y3 u* N! [. Hset trade-record-one []7 c9 P: P9 P# l2 S

0 `$ _+ }0 c& P* `( `  D( Sset trade-record-all n-values people [(list (? + 1) 0 0)] ( r' Q% U, z1 n6 r0 s
6 k" C3 Z; q$ R! G3 L9 U& b
set trade-record-current []
/ t0 T) ]7 ~, Q7 [  Zset credibility-receive []
4 j1 J+ J+ M; R& y& J" w$ e8 jset local-reputation 0.5
8 f4 x  ^: _/ t" Oset neighbor-total 0
3 O* w* ]- _3 Z4 y1 \. dset trade-times-total 00 y% S" I2 [: H
set trade-money-total 0: ^$ Y2 J0 ^" H, O- O
set customer nobody
) b% d. q$ E* ^3 M5 |' G9 [0 Hset credibility-all n-values people [creat-credibility]4 z# N6 g9 X! e: N/ Z* I
set credibility n-values people [-1]
& L; z' B4 Z9 B8 eget-color1 R* E3 i  |+ L4 @* Y

; u3 a& l$ [  a( [: U' q6 C+ fend  O- s/ O5 n1 N% L
- c4 Y+ \. q7 e; `- s
to-report creat-credibility
, M9 E) |5 l" x$ ?/ mreport n-values people [0.5]
% V) X, R5 i  r7 Aend
3 }; f2 o* _/ \# M; {5 P0 s: @( Z# O* i9 g% t
to setup-plots- b4 D# |. x" q, n3 Z( m' M+ b

- J% u; w, n8 p/ `9 Bset xmax 30

8 C! d3 x4 s) F5 \4 I: e5 k: n0 d+ I- p6 E0 A9 A5 G3 ~8 ~
set ymax 1.0

1 D  p8 _$ p2 ?) P" k
4 {: h9 w7 V# a# W: `clear-all-plots
1 c6 g% k3 S$ v, @3 _
' E9 v- b# e- Q$ a
setup-plot1

- c+ E4 t1 |. @0 y! r( V: G
; S' ~' t! |; c* xsetup-plot2
; J. n( n4 I" `' Y

' `7 N% ^4 ]. b9 hsetup-plot3

9 P4 ]- u/ G+ ?9 J/ hend7 {# m& ~( \% o3 S% f; C+ E

+ \/ I& S4 R2 y;;run time procedures
1 E2 G, z  O  V* O- q1 ?3 t* E% w8 S* j
to go6 s( r1 n  O" t; ]* l% j, x
0 `- l& _0 D3 ?: R0 n8 }/ M
ask turtles [do-business]
2 C. I: _) f; U- L; j
end
" w2 T* Q4 D0 b5 u+ {! @( u
' Y# }) x0 \( p4 u& l3 Wto do-business
4 ]1 q: Y4 r0 r) N. q
8 V! B2 n3 h2 j* O: ?8 T% a

1 X. l4 i5 w- Y+ |  _# D, r# s/ v. E" Prt random 360
/ G" U! h" z. L5 I
1 T% [8 P% d1 j# u& q
fd 1
% W4 _3 z- e9 R, R, z7 Y7 d% j

7 I# k4 O  g6 n# I- Cifelse(other turtles-here != nobody)[

: k1 M$ K/ u3 P8 f/ U2 Z' A
/ T9 T8 N$ M* T- r! j: z  `set customer one-of other turtles-here

0 K  |$ ~6 l: V$ q' c/ y, n* h
* D* I" F/ O6 p. Q* D. R;; set [customer] of customer myself
' I- t9 L8 b" u0 G
$ ~0 V3 v  ~4 L4 g
set [trade-record-one] of self item (([who] of customer) - 1)2 Q! D( D: |0 y; t, {0 z+ j
[trade-record-all]of self' e, q6 Q. D1 T8 \/ I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 [$ [* z- e2 B6 ]( v5 y/ g# s4 t$ ^/ W- h5 D% z* p
set [trade-record-one] of customer item (([who] of self) - 1)
( K& M- w: f% l" J7 s  C/ }5 _; d[trade-record-all]of customer

+ |$ d! z, O- l/ V  O3 X4 Y
! s' O# ]( T  j( _set [trade-record-one-len] of self length [trade-record-one] of self
" [3 U* ^2 e( n3 U$ P' O
  h/ G4 d, q$ [2 u+ ^
set trade-record-current( list (timer) (random money-upper-limit))

$ k' ^6 h( L) l0 r- r" d; K4 O1 S* r. i( m4 k
ask self [do-trust]6 U) Y$ v3 ~- b6 X* C
;;
先求ij的信任度
: L; g% V& C3 I& {* s
5 O" j2 z! M5 B" L* P* S8 _2 y6 j7 rif ([trust-ok] of self)
5 \$ E9 G& t( M+ P% U;;
根据ij的信任度来决定是否与j进行交易[' p2 p( t% @% k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  e- U; F5 E) J$ u; {" S  C3 I3 `( L0 G: L$ _
[
' I" R9 D, M7 d& w6 W* m

/ P9 L. r' a6 S$ ido-trade

& G) V/ t2 m4 r; x& R% R& `9 J; Z3 |  K" h1 p; H
update-credibility-ijl

/ N3 Q& |6 m% L7 u# c
2 h/ v/ G7 u4 O0 jupdate-credibility-list! D$ [8 m* d  m" `3 i0 M1 m* Y$ Z

& m% v9 E: F  E' ?7 |) {* ]
& E4 y: t; |# Uupdate-global-reputation-list

+ `3 W! A; p5 i  U# W2 o+ q
6 L5 j( i/ N8 o& E. z: ?: `, hpoll-class

. H" U: n7 r# e& ~/ p+ z) m& t; b5 \- Q
get-color

% r8 X1 s, ]% u6 U3 Y+ m1 q1 N: J1 A3 k: k6 _+ ~8 U. m
]]
8 N6 e; x. H, Z7 [7 L9 a4 R1 z5 c/ b
;;
如果所得的信任度满足条件,则进行交易
9 K4 L: @% u6 h) s+ C0 e; G8 I- L+ r
[

  @2 @2 E- R4 H9 b6 \
; ^% R  k% E0 H, z& [rt random 360

  I: X" E3 X* L0 D) v8 Y/ R$ M7 g& \  T) S* z  z
fd 1

- b* ^6 e1 r# i$ u- X: B2 k' i( D
3 ?& }7 p( i7 G' e& {]

3 O0 B5 q# T9 ^3 i+ U$ H
$ t8 v0 k1 u! L6 C; y5 [6 uend
9 S9 b& ~* O) e( E7 }& L. A
- l# [  L- t* s2 r: j' E5 a
to do-trust
- _) {3 B/ ^! \8 X1 u9 r# g7 Uset trust-ok False
# o( }9 u  ^! S; Y& R- [4 B
% x6 [/ N# {$ \

: I0 G& `4 b( r4 i. jlet max-trade-times 0
1 r, X# B, a. s0 F  T0 p' ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 X' [! H2 q+ g2 Hlet max-trade-money 0! ^$ p/ Z5 }) Y4 {3 V1 I% H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: }8 L: h# x6 K) O) C, N. e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( B) ?5 y+ O) E( \2 `) i3 \1 ~" O, z& v$ X6 p

" n; W+ ?, I; U; s3 i; iget-global-proportion# Z$ e8 T! C5 A$ F
let trust-value
0 G! [: s" i- g& ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( [! ?: z& A; bif(trust-value > trade-trust-value)
. Q. z* g9 n; ]$ g2 r5 g/ H% E[set trust-ok true]9 K5 l. p9 k6 v
end
( C) D3 T0 a' ]3 Q: t* E- a
" |# J2 a: [& [  Z# T; Jto get-global-proportion
4 N5 W# v& C" s( T- zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% o! `6 W" _6 t4 i% a# b
[set global-proportion 0]3 G% |2 i# p: `' E: Y0 h
[let i 08 \9 Z- T/ S$ ~
let sum-money 0
- i  u4 n. V& X# i, Y/ vwhile[ i < people]
$ v' d8 \2 V$ ~1 W[5 B7 A3 `2 X7 K. F% |+ Q: `: ]& Z
if( length (item i# @* `1 r2 y9 k/ f: ^5 c) M
[trade-record-all] of customer) > 3 )

7 V, W8 i  W1 A' f/ }% n, N[( d6 Z4 @+ b! ^# \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 k+ \- b' B; W& ?; H/ [/ k
]  u( U3 z7 }3 D* r4 F3 L, e- x
]9 m9 m; ?: {4 N: M
let j 0
! b  z- B# x: u$ Vlet note 0
. I2 ]* ]9 N# Cwhile[ j < people]
8 i' v# P3 l& l6 C2 m& Q. e[
1 X- }- O, S/ N( r( U" {if( length (item i
7 i+ [. s, A* K% P[trade-record-all] of customer) > 3 )
  H8 t& v% x) Y, D3 N" i* _1 V4 o
[2 _# ~# L5 P0 R* y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- h( k+ J, m' K; d& s$ g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 F. n2 q; e6 _+ A5 s: A" W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 n7 g/ u; V' p. L/ c
]
( O+ G4 p8 c" t. g7 d]0 F6 }2 _& g! Y3 U8 F' A
set global-proportion note- P3 h! o& ^6 ?6 ]0 M9 F$ M; P% O7 s
]
0 B6 K$ p) ^6 x( \: mend$ A$ u# Q, z/ o/ V

; b! i$ a+ M0 bto do-trade
3 M3 Q( E) t0 x  }( |;;
这个过程实际上是给双方作出评价的过程* R, q! }7 x* D* b, w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% [4 B# K% g; p; d5 m. c4 W  J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 i& d7 z8 Q/ b2 f
set trade-record-current lput(timer) trade-record-current4 ?1 j- B" a8 Q. x# `  M
;;
评价时间
4 J& I1 E- O5 o4 {, ?& O5 {ask myself [
5 L. H% B* m; }( A( V# A8 ~' O7 aupdate-local-reputation
7 m- P5 O. @. f+ Y+ Dset trade-record-current lput([local-reputation] of myself) trade-record-current2 E0 O- t( a( Z
]
  p8 I  C  g/ n" Y, O: b, oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, k  {/ ?$ G/ x' Z
;;
将此次交易的记录加入到trade-record-one3 L3 B7 V: k! `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ W) F/ l% E: ~, _) N  c# w7 Z( }
let note (item 2 trade-record-current )% j1 C9 E9 _; i: h/ |2 H9 k. l
set trade-record-current
1 \4 B5 B4 [5 ^) P4 w) c(replace-item 2 trade-record-current (item 3 trade-record-current))
3 U4 {1 c9 y1 [1 H3 x8 S
set trade-record-current
2 f7 ^) Y7 w, E+ c5 a(replace-item 3 trade-record-current note)( x4 z( _8 K  `  Y& {! T

% P/ z/ t3 Z% s/ h4 s
: o; J0 h- O. l
ask customer [
4 y6 g& s0 K& Z1 iupdate-local-reputation7 `0 k0 q5 W6 G5 i1 W
set trade-record-current* r2 [/ X8 j& I- X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( O: N/ r  L' z% I/ t) o
]3 _" a1 T2 n) d
( \5 S4 d# g* I! q" U4 s5 Y

6 r  `* v% i: pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& z, s7 G$ I3 q* z; |1 X

3 ~! V( b0 h: o/ |& Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 g3 Z' z7 k- Z, D/ p;;
将此次交易的记录加入到customertrade-record-all
7 I, s* @. e  b6 i9 M& |: e8 y0 V7 f4 oend0 S% E, v/ s0 c& [! h
/ o5 m3 k, C$ o+ n: M/ F
to update-local-reputation
# A( P5 R. E& r; N8 I# ]/ E' K1 sset [trade-record-one-len] of myself length [trade-record-one] of myself9 V+ q: t% T5 _* l. z( @1 i! i

2 B% H6 L% h1 T) W1 q
* U- @' `! e; _% h! m$ ?' B, [8 Q;;if [trade-record-one-len] of myself > 3
  y9 S6 H. i( `4 u! V8 d6 \0 @" o
update-neighbor-total
! V0 y& W) I9 u' q;;
更新邻居节点的数目,在此进行% Y2 I0 J2 c, t3 p3 ]3 \
let i 3: n- N5 i4 \* T) i
let sum-time 03 W  p, A; v8 n& z; O: \
while[i < [trade-record-one-len] of myself]% H7 m/ Q0 N7 f$ O; W" ~. w3 {6 w
[& W& ^7 l: a9 |# k; Y& b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! |1 Q$ R" W& T7 _( iset i6 v% W/ G5 v3 ~8 [) \: ~3 c! P
( i + 1)
, A' j1 {) b4 ?! Q4 ~( K
]
- F, P$ F, I" i" ^1 X; hlet j 3
0 i1 t: [& `; |8 Slet sum-money 0# {4 D/ g( U5 m! K" L/ V
while[j < [trade-record-one-len] of myself]5 X% q! V: w; p: O2 P. i# x
[: ]! F- z8 t3 ]4 r/ r! s- P
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)
: [0 d" _, i  n, i/ I& a" b1 A# s. Qset j6 y. c# ?9 p% N
( j + 1)
/ s5 e# g0 z/ [, c
]
! I# }' \" ]' ]9 S. Rlet k 3
1 B5 V' }7 T6 Q: ~let power 0
) s3 N5 }+ v5 a& f" N& slet local 0
7 V6 E/ g; P9 y& p$ B$ ewhile [k <[trade-record-one-len] of myself]
  h! u. \- b8 R) d" r4 e5 b$ x[
5 u0 b- z1 k; U* K( sset 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)
( s6 d. c5 U9 y4 X( K4 Nset k (k + 1)0 F3 X# U+ I- K- [" T
]
, _4 j! ^( W  F6 hset [local-reputation] of myself (local)
  d7 t' e; {+ y( yend) h) P) g* l' N# O! S

3 l/ }/ Q) L0 o5 {/ C9 w- Dto update-neighbor-total9 A) {5 j' u, W+ X! t  S- f  c3 b6 B

0 q# @( i2 A" x* e6 s, `2 \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- m9 d# A: J+ L! i
" c  H  B) Z5 z% \

4 w, K+ b& v" }5 D9 m! r% bend& d/ [, Q* y! J8 l2 ?$ D5 R6 Q

4 i! C5 u; o9 U' Tto update-credibility-ijl
/ n- ]1 q- F# R1 x
1 P! V7 x1 |! N4 x6 F;;
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。
* e  j6 R  m  ilet l 0
' K' i1 o6 R# V5 U9 Lwhile[ l < people ]
* q+ e3 x+ J$ y5 B) Q* Q# V0 c;;
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
$ `9 Z& l! X; |& U7 H; Z$ f6 G[
( Q! B2 ?+ U& Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 I% \) v9 S6 V( T0 Xif (trade-record-one-j-l-len > 3)  E, q9 ]4 y6 T9 {" i' q
[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
, L( ]6 N1 j" T5 E8 [& ~$ Glet i 3& n- f. [* z6 E7 L+ |; G* `
let sum-time 0
5 V/ @% P& H' H6 m" x6 `* jwhile[i < trade-record-one-len]
* v! w+ A$ \+ D  q/ z8 k) S5 j[
& A: ^; d" N' k- }: G9 ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ i# R* o  a0 ?6 ]* S( P& n
set i3 u. c; k% S2 E" U1 n$ E3 Y( P. p- S- B
( i + 1)
/ S4 t& n! X  \; e" D4 S
], m! Y( X& V" m
let credibility-i-j-l 0
5 y$ n8 U; w$ [9 ?3 L$ j$ C" a" e;;i
评价(jjl的评价)
5 W# [. o4 K( C$ r; \let j 3
/ E* V( }6 A9 P1 Clet k 4
  o5 o" `- p0 j  O1 o: A: z- hwhile[j < trade-record-one-len]5 x, S8 \- m: F2 H
[0 C9 R& `  c+ 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
7 S8 z7 y) d. b) ?) D2 X, xset 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)
; a1 k+ n* O; z! J: Oset j$ X* o/ S: C( {  y8 z, R  f
( j + 1)
- c3 T# x! K( z% @  f
]  X% q. g  ~9 ?. e% B3 l$ k$ B4 [
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 ))1 z2 d# Z, G* @* L# T- v

! ~; B# S6 k. o) i
' i5 W8 K1 p; {/ a7 W: s
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# _0 M) T& R( s, G; N7 P, {
;;
及时更新il的评价质量的评价
% m* d) @) ^% V! wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 Y/ f# @) ^* r" j9 W
set l (l + 1)/ ~$ G3 n: _  \1 K3 H- F" B
]6 Q/ _4 X$ t' e6 b7 v
end
9 \4 C; J0 b# M7 X" h3 ~( k! Y5 X( a  t
to update-credibility-list
0 ?! F7 |  \9 P: R7 zlet i 00 W6 |1 K" t* }2 z. D
while[i < people]
+ Z2 g" v$ w4 r. Z3 ^[$ z' g9 L9 l2 a( Z/ k; b
let j 0
! U% p7 J8 y( M, F' Rlet note 06 m! c; ^3 m# G. ]/ `1 c( ?
let k 00 `5 v5 X4 Q0 d; Z. e& k$ V3 d
;;
计作出过评价的邻居节点的数目) S! C( T+ @/ @8 v; I8 L, z
while[j < people]
, x7 t& {! n5 C& `[
: j7 A" Z. V2 C# a, f6 z6 Jif (item j( [credibility] of turtle (i + 1)) != -1)) n5 G1 G# ]; F9 m
;;
判断是否给本turtle的评价质量做出过评价的节点
, F9 G& O5 P$ n" L3 `[set note (note + item j ([credibility]of turtle (i + 1)))
: k/ p& H3 u7 n4 H- s;;*(exp (-(people - 2)))/(people - 2))]
+ B7 a& P" E+ g9 @% Y
set k (k + 1)
, A# L8 t3 y7 F2 L6 j]
: A# I' S1 A( Y, b3 C5 f* S2 v& _  gset j (j + 1)' _6 W1 K+ Y. y% Q
]4 |7 J3 v% z  F* s5 k" h# Y
set note (note *(exp (- (1 / k)))/ k)" ]: `# u) F2 S! x7 @( ~
set credibility-list (replace-item i credibility-list note)
# Z4 |0 c8 h& j8 U$ T' uset i (i + 1)2 D$ ?% Q0 d; J5 g+ e
]4 V! P$ |2 Q# ]" N& `
end
2 Z6 v5 P& k& p  D" @$ `) Y1 [# ?0 N$ a
to update-global-reputation-list
: C' W+ ^- H! y) \# }; ilet j 0: N7 G9 |: R+ e& w5 w8 f# ~
while[j < people]/ n/ m" A8 r& N' z
[
* `* Q& B6 u1 t, ?let new 07 [# M& }4 I$ f" @. k
;;
暂存新的一个全局声誉
+ H& @3 F5 q! |% Blet i 0
( j8 w8 A+ f. T. D1 W; plet sum-money 00 K% u) d: O; _
let credibility-money 0
, z! O' {9 O6 Y! `+ M! a7 I8 S' v- gwhile [i < people]
! d; d0 z4 x! h0 q- o4 Q) C1 A9 ~[; u3 I5 K" E, w4 h# t, m" \, v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 w3 @' s8 N- E" j8 Q0 V# R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 S& m; m3 b+ _# jset i (i + 1)( W' `- f; i! q' h' j
]
; O! b4 P+ @8 U% `let k 0
* d6 T6 M7 C+ t7 f) q' Plet new1 0/ _! n; R' y6 g  W7 e
while [k < people]/ ]) D* O, n  \, j2 k, i
[  ?# K. s% `9 P  O  }5 X+ T; y, ^
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)
0 G2 X* v: o' p9 M6 O! K% ~2 Qset k (k + 1)
( |. u. Q1 H9 ]7 u8 ^6 {8 {# G]; i& w5 U6 o) n: k. A; {% }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 L4 |+ `  }0 j
set global-reputation-list (replace-item j global-reputation-list new)0 k& ]: {/ L. t3 [  \0 n
set j (j + 1)
6 W9 N+ O. j: j* C. F( B. c  |6 _5 ?]
/ L8 q% {8 r& S8 vend, }/ o( q) s2 \$ P. C2 E$ v
1 b% ]# X- x# d# o  }
. l/ o* C6 i% f7 l# b

, y2 N0 X& J6 e6 j, Fto get-color: g! X: g* E& p* x& p

/ z: z( i( r( l1 }set color blue
2 T# t: n1 v% u" D
end
. S6 c% f$ E& i( m5 l' L
- f5 n; Y1 I+ u# e0 Qto poll-class
. s; d$ U8 U% u3 Q; g' K' p  i' Vend
& ^( L5 n( t! @  n
  r* n7 O6 G& ]/ O+ T8 qto setup-plot10 Z0 S9 Y8 l- ^* X5 f; m
6 g( D8 g' l6 p
set-current-plot "Trends-of-Local-reputation"
8 n+ k/ e5 \1 |; P; _; Q
; i! H% {3 ~# s6 e  r
set-plot-x-range 0 xmax
$ P$ [7 T' ^/ `7 T: n" X

! j9 r- h2 w% p8 [# U" aset-plot-y-range 0.0 ymax
$ {( w- }* Q  L: T% i. H
end2 n' @+ h, h9 Z4 u+ Y" T) j

/ \! Z" k4 n( t7 M+ Q- f" G. k7 i8 sto setup-plot2
# W: H( K/ Z! \, x/ l* g7 N0 d% V% s* i% n; o" H" m' r$ k$ W5 U; j
set-current-plot "Trends-of-global-reputation"
, A" b( j. L- a! E* F, u
; V0 ?) l" d$ j, {/ S
set-plot-x-range 0 xmax
* E! C0 S8 v& L; j* o. J
% w5 \2 ~( U; p0 r
set-plot-y-range 0.0 ymax
" S7 j; W1 n) D" F$ _' J: P- m4 I
end7 y" R, ], x1 ^  r/ ^+ N

8 J9 S0 h+ \) i. Sto setup-plot3  g3 k) y$ p, b) ]
$ L; A4 [4 N" X2 _  a
set-current-plot "Trends-of-credibility"

: t/ F5 R: o( E8 s+ R7 l" A  t; G  w) Z- s- Q1 }! ~" |) o* r' B4 |7 k8 L
set-plot-x-range 0 xmax

+ w* K# ?+ `/ r3 \2 q: Q% {/ J7 }9 D/ `  \4 C6 ^3 X
set-plot-y-range 0.0 ymax
1 R' C1 m4 ~5 K% `, Q4 X' n+ T
end: n. O3 i( J% g5 J

) u$ X/ B2 l0 p* T4 `  yto do-plots8 d% t. O1 `9 Z, i
set-current-plot "Trends-of-Local-reputation"
7 y6 @' B9 b% b) @. R( P9 {- ?  pset-current-plot-pen "Honest service"
# |/ }) [7 K5 L  |/ @0 b% s- p6 u  eend
/ V4 B1 t3 ?3 o: \' v) ?3 Y9 |& H' ]* _
[ 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., e+ h8 `$ f" \; E* S) n) E

$ A4 \: p8 l8 @- ?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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