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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:
+ o; I& j/ X* }  z7 C3 Cto do-business 7 C2 Y, Y; m0 j/ V$ ~
rt random 360
4 O  b0 S/ @6 K; m; t$ W fd 1
: u, ?, Q5 |( `. p; U. k8 ] ifelse(other turtles-here != nobody)[
! @# I% G5 A  B   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.! m4 L- F" }2 s* z5 G+ B4 g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # X' q; E) m8 _) T+ T& G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- Z3 d/ _% t. m' z
   set [trade-record-one-len] of self length [trade-record-one] of self
1 F" `0 Z' c7 w8 U  |, N  K   set trade-record-current( list (timer) (random money-upper-limit))8 h, T$ i2 `; `; T+ w" \( _

* {2 D( s# B8 k问题的提示如下:* [" i1 p& n" c2 w8 |
' o+ J5 p" n3 h. R0 R5 r
error while turtle 50 running OF in procedure DO-BUSINESS+ z5 C% t) a( b4 P8 A6 ~# Y
  called by procedure GO" R- c% b7 F3 k6 Q& j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, c& \8 {# W- D. s; n9 u
(halted running of go)
0 U: M$ w( c! {
" D7 i" u$ e) A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~~
' ?; T* Z7 r: g8 f& k& i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
9 e% S/ `# K" N0 [globals[
% k4 B2 v4 ?' B0 L. M: x0 ^. h- {xmax
$ r/ m5 T: V  l2 uymax
. Z( i0 F, [9 b( vglobal-reputation-list
" [) E% G) m5 F- E+ m3 I& d) z2 A. q
6 R' X3 v2 l3 n;;
每一个turtle的全局声誉都存在此LIST! A; v0 c$ N7 Q
credibility-list
4 K+ F0 z6 j0 I; e;;
每一个turtle的评价可信度
5 U" Z# |" h3 b" S3 C* U$ N. C0 |honest-service
& R! |) H$ u5 ~4 O/ t& Qunhonest-service
% ~2 Y) v1 {  Y) p" n1 xoscillation
- s" c- L- H& z7 {% p% [rand-dynamic+ c& B$ {2 }% [% {8 i5 i( A' ^
]
8 M# P. f' J. P" R5 o/ G
6 S1 i+ |9 K& @/ Sturtles-own[
8 y) M& p4 f/ ~trade-record-all3 @, a, q5 p7 N( @
;;a list of lists,
trade-record-one组成
" C! U/ m7 a6 H: X$ E0 q) m( Dtrade-record-one
/ y# e, n% `$ A+ s; S5 I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 Z) G# d+ V! P; s5 q) ^
$ h1 b/ H0 V% h' @/ q* B7 R;;[
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]]3 L* V4 w9 m9 n( G/ [5 a2 \
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]
; D* E6 s; P% O" P3 b& q6 ]) vcredibility-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! H' v+ o! t* Y% ^7 m8 j, Y
neighbor-total) S3 Y; O% n: R# E
;;
记录该turtle的邻居节点的数目" c1 g$ E6 ?, \" l: |% L
trade-time% Q2 c1 ^- ^3 K* B- }+ W
;;
当前发生交易的turtle的交易时间
0 K' c0 g5 p' iappraise-give+ U9 b  N4 H6 R, B8 I
;;
当前发生交易时给出的评价9 y+ y0 H" E1 W
appraise-receive
2 `1 y. I1 e/ q3 S! Z" I5 e8 v  w;;
当前发生交易时收到的评价
# I2 g! k/ {5 S, Y' f, Fappraise-time% q* t5 ^- ?" u6 c5 K& P
;;
当前发生交易时的评价时间7 s6 c. l1 J0 s+ {- R; m2 Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 s4 B7 J& H* B( S6 Z) W6 N$ X, E
trade-times-total
* E& e2 U: ]& L;;
与当前turtle的交易总次数
+ Y6 ]2 {8 A. ?0 K  J& H$ W- jtrade-money-total
0 I) t- F; u! o! w% F: m( z# K;;
与当前turtle的交易总金额
: @* K' X) S( |/ n6 d- m& f. nlocal-reputation; T$ `/ F; J) E# m' j8 P
global-reputation; f* N2 Y/ E" R* f& O
credibility
! {" ]$ O4 u8 i) @, N- I;;
评价可信度,每次交易后都需要更新- C( m# B" P) d8 Z/ s6 A, V; f+ V! B7 O
credibility-all
0 J! ^  q, w7 K7 s& ?;;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% W6 T" w' e( [5 v

4 i0 {, E! G9 ]( t;;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
/ }* y  D7 d& \" v0 vcredibility-one4 Q* x0 q+ G) a  e! ^$ s8 a, \$ Q+ [
;;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
. A6 {8 y$ [6 Q- a) c# Wglobal-proportion
+ s$ [# o" |# X" }& h- Gcustomer  Q7 m9 G7 p& \% d
customer-no5 [. L) \' \3 Y# N5 T5 U! c
trust-ok8 N' q, c" U2 a) ]5 Y- p
trade-record-one-len;;trade-record-one的长度) H  o1 g. S( Q6 W8 C
]
) n3 D' d' c/ c+ P8 p8 {
! a1 n( @1 o7 M. y, k& ^; A;;setup procedure% j; x- u2 V; ~( {

: }! R  r' e8 m# n% Jto setup$ \' [+ D. x; ]2 O0 V" v5 N

2 i4 s8 t( T$ B+ d, `ca
$ R7 T# |: U( \( v0 u" B

) z, G/ O; h, q' h2 \- j( jinitialize-settings

( h2 E! @$ f1 }' ?4 c2 a4 F
8 {6 u% X- _/ w+ n  @- N2 _crt people [setup-turtles]

: w& T# b. Y# u2 k" B3 ?' Z/ Q0 ^7 c' L& K1 p8 o0 a
reset-timer

3 G% q" u% H. `7 u! E% R- I# G4 G: |# U# N6 z9 ]( Y* G
poll-class

0 Q& m# Q- B& X" r1 ?1 V
6 e* \# u" W; y" Psetup-plots

& r' V" g  A2 v0 Y" g' t% b* F1 b6 z6 O7 K+ P
do-plots
+ W; {. A' E4 V2 D) h& U$ J
end
7 S+ P# ?8 }  g4 ?  ^
, ]% @- l+ h. ?" X" r8 Ito initialize-settings" {: b* f8 L+ y- ^4 G

  q' C# m8 }8 H2 Jset global-reputation-list []
, @& c! J+ h# f( s4 V9 e/ [! _8 r
7 v3 v. D" u0 ~+ B
set credibility-list n-values people [0.5]

3 L/ D! d( U1 G+ k1 N' r! W  _7 @. W* n
set honest-service 0
: A( x, c$ ?9 ?  J* a

+ C( y' u- ^# p4 y/ v) ?/ J- gset unhonest-service 0
) y0 D7 t( l, Y. @% C

  o3 D1 B7 ?6 a# `1 _0 l" _4 L# Jset oscillation 0
! M7 O# a8 F( `( ]3 Q1 q
' `. O. h' t8 v% `
set rand-dynamic 0
# Y7 w4 ]/ ~" }' n; p
end2 @! {) l7 m! m+ W! R
5 E! G9 Z& ~! X( D
to setup-turtles
9 ~& t0 Y% a, d0 I% f$ C& j5 `0 L1 ?set shape "person"
* ~3 p+ q8 ^; dsetxy random-xcor random-ycor
5 U8 [" T2 D' T+ q7 h- H1 x. hset trade-record-one []8 ^  {$ E7 _7 G/ s& F4 s0 [+ d
) R* j- q! ~. e2 E8 H  k+ H7 l
set trade-record-all n-values people [(list (? + 1) 0 0)] * i( j) E9 Y3 F5 V
/ q4 q% a& F" z  B- X
set trade-record-current []& x9 J5 g* `8 W4 D$ f4 I8 D$ ?
set credibility-receive []
5 f* E* V# V+ Oset local-reputation 0.5) B8 W' n5 ^9 b1 Q6 Q, A9 Y
set neighbor-total 01 I. k1 W5 U% H$ l/ p
set trade-times-total 0
5 O& C& k" c! H# n' U4 Eset trade-money-total 0/ B8 H1 |& d5 V, }& J
set customer nobody# h: ]6 a& i" ^: f! ], `
set credibility-all n-values people [creat-credibility]* H$ h3 K4 Z7 X0 j5 j$ d
set credibility n-values people [-1]
% z4 f* R9 W6 q$ y: \- Eget-color$ i0 Q  a; R. s9 u5 v
! t) N" X/ N' M
end* {& G$ C6 b1 Y" }
! _, O. C! \" u: L6 |+ K
to-report creat-credibility
$ ~9 B: K1 R2 j+ C0 ~% I; H5 \% ureport n-values people [0.5]4 Z3 }# f* q' Z# D/ {9 {. f
end
% S- `2 o6 e3 \" }, ^, P+ m( ]3 Y7 v
to setup-plots
& ~7 q1 f. v9 f& [$ q+ ~* O; R5 \
set xmax 30

% d" V6 P& |, X+ ?/ E
9 `) H. j, ~& }4 c( C+ Fset ymax 1.0
! ?0 j' ?2 z) V
* y+ n# K# Q+ a9 ]
clear-all-plots

( W9 \6 \; a: }2 [2 R( U7 d
5 e/ p; K7 m4 m5 }* @" s2 dsetup-plot1
, H/ `6 C  F3 V7 p

- i- z1 Q. T9 F5 y0 L9 |8 q# osetup-plot2
1 b5 {: W/ i( d5 L" A5 c
/ t5 s8 n# {) H& M) z7 p* f
setup-plot3
: k; D* G# W" `' S2 L; C
end
# a; ?/ q( [0 X! G, k, q3 {' `& q- _4 h1 V* \9 D4 B
;;run time procedures
: n5 s$ _+ |. K, ~. s8 h3 ]+ I, `% b% _. N* |- A3 `
to go
. U# c: B+ e9 ]( T7 ^! Q5 R
4 R; B7 k% T/ {) q  }# P! Iask turtles [do-business]
+ g  C: `2 h3 O, U# b
end
0 G" B3 Y" n2 r
5 A6 @( z" Z! K: e  X9 ~4 b$ Xto do-business
9 E! G0 X- X4 Q* J8 ]% i

' z8 I5 a8 q; |7 o- H% `: L5 c
% y& P4 V% ]' {5 Irt random 360

- |0 F8 [5 l9 K  b" }1 i
( ~/ A: [2 w3 c3 U  i3 [' P: [. ofd 1

( I5 s7 A$ N0 a9 o" E* ?. |
/ m- f; V7 ~, N9 Sifelse(other turtles-here != nobody)[
8 f8 p% ]( y5 ^5 l3 f/ }2 L
" G& w0 M, K1 U" {- u+ o! B
set customer one-of other turtles-here
* Z) m. r% }# @& B; z( @8 N- Z

8 J* Y* ]" ~+ X! u( C( m;; set [customer] of customer myself

. n. X3 G! b! Z/ K3 Z1 r- B. G" x. Z3 A' i/ i" e  r
set [trade-record-one] of self item (([who] of customer) - 1)
3 Z. C  C, a7 W# {1 T[trade-record-all]of self' G0 N1 E* X/ d6 l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, y4 @" E$ {0 H8 D0 }/ B* B( O# b

1 i9 U8 n6 V6 B- A& ?/ kset [trade-record-one] of customer item (([who] of self) - 1)7 G/ O% O  Z* @/ H( _
[trade-record-all]of customer
( _. ~9 [. o# E' M  o+ H. b! S

- H$ e+ F4 _$ Y/ ?# [* _0 Z. aset [trade-record-one-len] of self length [trade-record-one] of self

6 }8 e6 k: Z: }: E/ r& [0 S8 X
set trade-record-current( list (timer) (random money-upper-limit))

$ q) e6 J9 C- r0 D. F
% `" U1 @2 m% J8 task self [do-trust]
4 a7 o3 {. j- T5 s) a) f& J8 M& j;;
先求ij的信任度+ [- e) S- s! Y% \. d* b6 m
! F5 o8 Z& r* K" X% u; ~5 p
if ([trust-ok] of self)1 ]4 ?9 f+ `: d8 x: j1 J, S
;;
根据ij的信任度来决定是否与j进行交易[" R4 }3 Y: a( ]0 h/ R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, z" O; A& t& x: g/ g) C! f: }, _: f- D
[

7 y9 j  n7 z- x6 k. ~% i# l9 e- Y8 f% Q' B9 b
do-trade
9 g  i2 t( z3 h  c1 T

. p' ~, ~( N! f; f7 wupdate-credibility-ijl

4 |+ ~6 p: A& E
! g( w& Q5 j4 m# Y4 Q4 I' Yupdate-credibility-list, @+ g) |8 ?! r+ `( ?6 D! ?' J

; E$ ^8 P; t  L
0 k/ N) V3 @7 [* y4 d5 Eupdate-global-reputation-list
. [( z0 L; i0 Z8 Z: X/ i
6 q: i: W/ R& b7 I4 r
poll-class
+ h. Z" h  {! E$ @( p" [' w
6 R5 t8 w, u+ a6 ^6 \/ m
get-color
- m4 [5 e+ V+ T
3 n8 C5 @% V" `1 {7 H9 F
]]
' N( l5 g; Z: d$ C- ^- j0 Z
8 f) O/ b/ V5 D7 w, e% t, o6 p. ?;;
如果所得的信任度满足条件,则进行交易
  g3 k  @1 J; W5 w
9 i. [: l- [# |* c1 Y1 J3 z) L[

; m. Y9 l7 D9 h8 Z
2 m6 N. v) y7 R" b8 \7 \rt random 360
, O' P8 q8 d1 m9 J' r! s7 B* l  A+ H
/ {6 r, X) C$ h8 A8 Q5 K; e
fd 1
6 A- G5 f' }4 W8 L! s& t0 ~6 d4 L

* z8 d/ f' m  }. G9 G2 z]

/ t1 h. j) G' |. H$ }- n; Q5 i2 v" R3 s2 y- ^
end
" ~: O( o4 c$ d; C" [
1 }9 v5 A2 P8 N# p  H* k
to do-trust
. N7 q# o! `9 e1 _' aset trust-ok False% A, ~! h3 E4 `( c
0 C0 E  @! o# ^3 g2 n% I0 t
) ]7 s! a$ M! X! L5 v+ i
let max-trade-times 0
0 l6 p6 d& e" v; J$ Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; X0 B; ]" b( N: r9 }0 }  |( Ilet max-trade-money 0' T- A) j2 ]9 s6 f7 i& y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ D* q2 Q7 a! w1 k6 wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ k- H5 e# J0 x$ C1 j% b
, \+ Z5 _$ {/ C6 ?2 p- S) O# p

; J2 v, \* h7 x1 }get-global-proportion
# }+ A8 t: d( C" m5 t: nlet trust-value; H+ m$ G7 v  ?) d# L! w
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)
% \! X2 p  E1 ~3 |+ R
if(trust-value > trade-trust-value)
1 }8 Z- @1 Q$ n9 _- Y+ `! E+ `4 [[set trust-ok true]
% t  m+ U8 L/ S: j0 @end
9 r2 s# P# J8 W9 g2 ~4 @
8 K2 w" ~* E' R( k0 Jto get-global-proportion
- q5 o# W9 Q: u2 Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 j5 r# J+ c% Q, }- z[set global-proportion 0]- l7 o/ Z1 x- P! N4 o/ K: q
[let i 0
! @7 c. U# t6 A# wlet sum-money 07 f/ g, l' j& e9 S4 B
while[ i < people]/ Z. H/ v3 x$ U: E
[
% V: p2 Z! ~+ q. {4 Lif( length (item i
; B4 L8 H' D2 e0 d[trade-record-all] of customer) > 3 )
" I8 y  e) d9 l
[3 x! x0 s! Y* _9 Q( ^& {+ {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# F1 S" ]) `' M# J
]' y5 z' i5 Z2 K; g1 a2 W9 x
]
# m* x# N. z, Rlet j 08 x, R) P1 A0 G9 X; S; Q) }4 t: N
let note 05 s1 W/ u  Z. H, Y6 v2 n% C- W
while[ j < people]
! r  I) Z+ s5 T: P- j- X[: M/ [5 @0 ~. E/ W
if( length (item i
  X4 {. C. e8 G3 t6 I7 E# n' \6 i[trade-record-all] of customer) > 3 )
) D- S( j7 s7 c/ n
[
5 W. b" ^* j( y: w" |2 iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- \7 h3 Z& @: I9 \+ |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) L, t0 Y3 ]* A3 G- b9 P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 u% Y9 _5 u9 g9 o: H
]
! v# a3 W! }( {, U, p: {9 L! \]
2 o. ]: }1 I  F) Xset global-proportion note
, ]5 j. W" B4 o3 s7 H% b1 l7 j2 u]
$ T0 X, E5 a6 e2 k# s, fend( Y! v4 u# j8 @

; ~" U1 h% y8 U- }: F  yto do-trade' J0 b" V' Q3 y& k+ j/ m+ y0 S2 m/ O
;;
这个过程实际上是给双方作出评价的过程/ K  c$ A* G& ]: B+ V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 d$ G6 t, {& h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) K1 Y6 H3 F4 s8 U/ H1 ^: ~: r) P6 ]: Bset trade-record-current lput(timer) trade-record-current. [/ X2 k4 ?/ X
;;
评价时间+ }1 W( }, R  A6 i
ask myself [
! W9 f  ]1 r4 k( d0 oupdate-local-reputation
! u+ W" G& x8 W1 j+ `set trade-record-current lput([local-reputation] of myself) trade-record-current
! T9 [2 C+ A( D  c+ K  W]& s/ {8 d5 ?2 k9 \4 |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ B( [" A% Z6 w/ z3 T
;;
将此次交易的记录加入到trade-record-one
5 o1 h! F' S  U. }7 B$ z- ]$ I. hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" M1 M4 v3 T2 G1 x
let note (item 2 trade-record-current )* O& g, m  C, d( g! Q  l! T
set trade-record-current
0 h! q6 X, i. O5 m4 m2 Y( [+ F(replace-item 2 trade-record-current (item 3 trade-record-current))
7 i2 c) C8 I% _( o- a' G
set trade-record-current9 j2 ~& N6 G, H& X/ ~
(replace-item 3 trade-record-current note)$ M; v1 `8 j! j- G. H

& V& P9 o) c4 L- o" H

+ D" V7 ~- X$ F8 y' n6 vask customer [# P3 O' }# f1 c+ v
update-local-reputation
, k: S. Y0 m9 X: S! s$ ]set trade-record-current
) e. u! k* }/ |& ~5 K: ^6 i3 N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: \4 K! p7 G4 Z( y( P1 J6 Z]
5 _- i( L, p# g4 J7 X. @5 W7 h, w( J7 e9 M3 l$ d$ t* }

, p/ U: x0 |, c2 Q* O7 ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# I! I! a5 ]% i5 q
7 a9 u9 u* W2 X. V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( q: G% m' N0 V" ^$ m9 B1 j; X* f;;
将此次交易的记录加入到customertrade-record-all
# x/ i% a7 [& Fend; [( i8 J, ^4 j8 t$ [. W
& G& t* X1 r$ ~
to update-local-reputation9 Y5 |) P9 J& l
set [trade-record-one-len] of myself length [trade-record-one] of myself
( k* ?8 |3 b- L% ?$ F8 @! S5 w; E6 e9 w4 s6 n
  G; \5 p) I: V6 Y8 p
;;if [trade-record-one-len] of myself > 3

% T; M1 M) c/ {6 N" r* }: }, L% c; Hupdate-neighbor-total
& y. l  G$ h( p7 y;;
更新邻居节点的数目,在此进行1 X5 i! Z# u7 o* B# ~+ C( s* R
let i 3! z/ L# g$ s( K5 ~9 w. K
let sum-time 09 e  t: J1 ?, V; p0 H3 O2 s
while[i < [trade-record-one-len] of myself]
  t1 L3 c; w3 X4 o  s) H[
+ S/ `" \2 m0 o7 H9 [! kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 }: \) Q. V  u$ b# Aset i
" v5 P6 A6 O* x( i + 1)
# _' ?. ?( k# K- F9 i7 E) X/ h
]: R8 [: _0 @1 A: @3 }
let j 3/ n9 |0 E4 z& e2 b# i3 e
let sum-money 0
4 t3 \: r2 }6 d7 e; U2 `while[j < [trade-record-one-len] of myself]
; J4 [; }5 [: K8 M4 i' q[+ T1 I  T9 |/ F2 {( A
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)% V. `& J9 h/ M0 p1 V
set j
6 f+ J7 d+ H8 I4 q) U( j + 1)
9 p* n/ r/ D' Q" p: n) N
]$ o+ l1 n5 s7 v$ v  t3 T% c2 K
let k 3
  x" t8 B4 A" r$ {let power 0% n8 ~5 o& J9 H
let local 0
* G) m; A  S3 ^; E+ j# I( Vwhile [k <[trade-record-one-len] of myself]2 h! [# h- g5 \$ U' v
[
" e2 F  F: ~& c* I& J- J# z* E! K6 d  \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) 2 V# C  g5 z& z2 v. @7 W8 p
set k (k + 1)
4 r, {% ?, h- j, L- E- R! j! P+ S]
" w! R$ J* w7 J. f9 A9 j) r7 n2 qset [local-reputation] of myself (local)
1 O  k* W8 Q4 d; Wend% t& p8 H7 B) d8 c1 a

! u2 B9 S( ?% g7 M& ^" L  Sto update-neighbor-total- _2 L- A, |1 ~# q# t5 _

" L; Z* I/ ^, }8 f, x( X4 oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 Z8 ?- P9 N, x! [! s

) g9 W1 x9 c6 h

9 B; U  ]4 F$ W. E. O. ?# iend2 H: x- y  n+ D1 D+ B
! l6 |- C5 C0 i. r7 m5 ]
to update-credibility-ijl   x) q) J* P  o( F3 W7 ~
0 \* B- g2 r; X: a; y7 H* @/ y' e
;;
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。$ m4 g3 C' N7 R6 k9 U* q- h3 d
let l 0! n! L' t. A1 R( b! L7 }" z& o1 y1 p7 J
while[ l < people ]
5 \" K' \* n- q' e) S;;
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3 l' Y0 r: M# k
[2 v0 `3 ~- q, h0 G3 `2 j; t1 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* P0 w3 W. `" l! t) Q& g3 |  l
if (trade-record-one-j-l-len > 3)
* @  C- R7 I6 X! Y3 i5 }  m[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one0 ~4 h" ?+ W. t8 r
let i 3
" U/ B+ h. Y( q+ Clet sum-time 0
. e  Q0 p8 p+ l4 t0 W  Twhile[i < trade-record-one-len]
/ H& t9 C7 D  N8 L[
' C' L9 D$ {% N0 p& Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 `8 W# {3 f+ Cset i
8 {, t% v9 ^4 \' m# |* ?7 F3 |( i + 1)
- E  `( y6 Z& s% X: w" b5 {; ?
]. ]; h8 A& m9 w' u, _2 D8 x
let credibility-i-j-l 06 J3 ?. M" Y; |  f
;;i
评价(jjl的评价)( K& J- k! y5 }
let j 3+ r; c4 D6 G( g) g; ^2 A) q. B. n
let k 4
; Z1 Y: w! E8 ?7 P$ r+ fwhile[j < trade-record-one-len]
5 [" C; d. ~' ?5 b& @; H) W6 P! p4 s[9 u1 w1 v: `" `/ e
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
: J- J$ J+ V+ I0 rset 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)
) J4 m* D" V" Q* M' E; Rset j! a( O6 U. z8 a+ @
( j + 1)
2 O- F4 _- f8 S' c0 t; M9 X/ H3 y
]
) F+ t6 `* Q. r+ I' W" ]4 cset [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 )): ^+ }+ ]3 d6 _/ i" F

/ a/ ^, g& J7 n  i4 Q5 d

- v" |' l$ T+ f% P4 @3 }3 dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ ], z+ [0 z# B& C+ |3 D1 R;;
及时更新il的评价质量的评价. h( p; F3 z' O- ~* Y; J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) m4 [' o0 F  x4 n3 d8 H5 I, w! Fset l (l + 1)
; S0 f; x, t# @* X]
" f/ b4 M& q- S! }3 Q, Iend
% v# p- a9 d! g6 L, X1 ~( V7 p
, ~5 Z0 @& E6 M; G, kto update-credibility-list
5 s- E# M- W$ ?7 S4 l( I6 tlet i 0* R2 I: `7 d: l$ q0 k5 E
while[i < people]: d/ P- F# p# S; p  J/ P
[8 ^0 Y7 \- l' r+ \" M+ }: P( Y
let j 0) ?( ~& W& ^; _, z1 d; E
let note 0
1 b, h1 W2 A, ~2 ylet k 0
. W. C# i% c' b/ Y  _. `5 n+ U" C;;
计作出过评价的邻居节点的数目$ g* }) I3 d: _' Q+ O: A
while[j < people]% g5 d7 E7 _3 a7 z! y/ z+ k2 f
[
8 U& M0 `' F$ u/ }if (item j( [credibility] of turtle (i + 1)) != -1)* a( q. w7 |3 c, P" M0 S6 D
;;
判断是否给本turtle的评价质量做出过评价的节点5 x& e! U- v- |! D& {" g
[set note (note + item j ([credibility]of turtle (i + 1)))
, V9 T" Z' p8 E0 t. O' u# b" V7 P;;*(exp (-(people - 2)))/(people - 2))]
8 [* n  d/ T0 L! ]; f# ~
set k (k + 1)% c7 u7 s# C" o- L4 ?( s, F4 A- z
]
. n9 k0 V2 b2 H3 o# S. {set j (j + 1)
3 x( h' ~; ~, I+ |% Q" [* s6 @5 n]6 o: J1 U7 h, p0 j: O
set note (note *(exp (- (1 / k)))/ k)
8 k9 b& p: H: Y3 y- Mset credibility-list (replace-item i credibility-list note)
, Z8 [) @. I( x* ~+ L: |+ h) Sset i (i + 1)* q; H: m  w+ e# a/ r# b" v- M
]
1 \6 k, ^0 N# I# d4 Cend
  R' D1 `; Z+ v
8 o, R' ?: n1 q$ q3 Bto update-global-reputation-list
5 A- U: w0 u: \" q: c+ U) i" |* Slet j 0
/ J: [4 L5 x  P4 Pwhile[j < people]
# U+ t8 x% ?1 i! n7 \1 N" R[
3 K5 ^% F: H! }/ Q1 ^6 n/ z: @let new 0
6 k9 q- [6 c+ a3 r$ S" c;;
暂存新的一个全局声誉0 @8 F- W1 Y: E, N6 Q3 y
let i 0
: u7 }. R* \* w7 b1 A# i6 [let sum-money 0% Q& h# ~8 R2 P6 p! V2 a
let credibility-money 0
1 ?6 Q; o- n/ [( H+ M% ?6 gwhile [i < people]
& O2 m6 d- y8 d# c9 |[- n9 ]' a) T# r1 N6 Z: V9 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' }7 o; L$ C( ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 m% q$ Q1 D& Hset i (i + 1)
3 q( f! g1 A" ]% Y. j]
/ _1 M' m: ]9 ?* R% {- Klet k 0- G& Y) o6 d( n* b
let new1 05 x0 H' ], Y4 L4 r# f
while [k < people]6 F) ?2 q1 _' m6 E  Q) K  ^
[
  \. x" j8 \* j$ |) ]# y" e& q9 s! gset 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), D# ]8 E  S7 {9 K- m4 j: V# O" m
set k (k + 1)( H/ M: y' j* I4 Y
]
# T) a) Z3 {" \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ w9 K/ `3 M0 Q, C0 ^3 lset global-reputation-list (replace-item j global-reputation-list new)# \) U2 e( {$ s2 P, O  c
set j (j + 1)! C# z# t* h, z6 P7 o
]
9 O) K# G: [2 H- b! J0 ~! Q* d2 vend* E6 u0 U: E% f2 V) i, k1 M

& c' G# i7 d' U/ t7 u: K8 k, a- i$ I; B$ S. L; W. |

9 p! B; v/ f3 g0 i, qto get-color
  r. g3 U" _" \" h" f8 v, N- ^& d: s
set color blue
$ X- z* J+ a( k6 b. R0 ~
end4 ?  |! r* J+ e* b! }
6 H, C# I' t! e1 k2 P, m
to poll-class+ K& I5 i' f8 l/ q8 I/ E$ o
end0 K) s& T1 e: g' j1 e6 E
% \- j" W5 Y0 \
to setup-plot1
" j* e5 x4 X7 p( U9 E" C6 y$ [" n5 O8 w/ N* v
set-current-plot "Trends-of-Local-reputation"

9 \% h/ Q3 u  u7 l# q- ~  l* m) x! ~' j& G! o* a; {
set-plot-x-range 0 xmax
' @. `2 J: R1 D, H4 g- Z, A. a# t+ M

& ?+ z1 B2 T( w2 Qset-plot-y-range 0.0 ymax
* X+ V' K2 o+ e4 X  j9 k0 |
end
. H; Y* P3 }/ `# N1 x; _( C# V- x
4 d+ `! V$ M/ t* Y7 h( xto setup-plot2
- ^" z  d# H4 n, p, F6 Y& I4 K" `1 ^4 p  C7 O
set-current-plot "Trends-of-global-reputation"
5 S5 v0 k6 {  x; \) o% G6 _1 i

" J# K1 j# ]% E, V1 `& N1 u# qset-plot-x-range 0 xmax
- j6 d1 F6 K' Z5 W/ G5 W' E" b$ y

% e9 S3 O: _+ N. |. {- Cset-plot-y-range 0.0 ymax

, H: a3 Q+ }* E2 s& ^end5 Q1 D6 q3 \+ k: K" b( s3 G, J& f

8 t3 {5 a( X' G" K3 yto setup-plot3
; }$ s; h! v$ W4 J5 y2 S$ b; y- X) r1 B+ i, p: Z
set-current-plot "Trends-of-credibility"

6 i$ ?! D5 H' j+ @" T% j
  x$ Q( V# N5 a: M& y' F3 R0 h9 B- wset-plot-x-range 0 xmax

+ E1 E6 E! n2 h. f3 G3 K' m$ [* V& [
set-plot-y-range 0.0 ymax

! \3 l. A# A. V* j: Zend
/ r$ C6 s0 g  w6 L3 {3 Z2 ?. P0 v1 \5 A8 K* q6 p# C" P
to do-plots/ M+ `) F! r3 H% x& p$ ]: Z1 Y- V
set-current-plot "Trends-of-Local-reputation"
5 G3 |1 {2 ]4 B6 _' i5 mset-current-plot-pen "Honest service"
7 H+ U0 R4 H4 o- Aend
- X2 k- @: ]/ B: e, I
# n* M. ]( b7 m4 b. I[ 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.* j) H2 `* F/ Q2 M9 k; I5 a
" _( _( O2 _# ?
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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