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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 J1 {. V* Y) R' R! P4 j& F/ {to do-business ( ~. h# ?3 }& o; F. O! ]6 r
rt random 360. _8 ~0 u+ |  N, l8 Z5 S& G8 ^, J
fd 1
6 r' l( |; f4 _* `1 i7 P5 k ifelse(other turtles-here != nobody)[8 z. ^, ~; t5 S. }' N4 x" o
   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 m" x+ L- w; u- j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& x& J5 b8 m" y# o- {" R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 F3 [) ?# [" o, _" r
   set [trade-record-one-len] of self length [trade-record-one] of self
! f7 X& ^9 ^+ f$ N/ ~   set trade-record-current( list (timer) (random money-upper-limit))
1 o) G" |# |. w5 t: ~" {0 d/ L: a( o% k3 F
问题的提示如下:
1 @. p% t5 m" `5 ^6 \" y5 a9 f3 T+ B6 M  W9 B
error while turtle 50 running OF in procedure DO-BUSINESS! z  G( v& \* L& r2 s6 S! U
  called by procedure GO
# c. S" q. \( o' v0 R4 V$ a# vOF expected input to be a turtle agentset or turtle but got NOBODY instead." V, _4 C1 s# [$ b" e  ]
(halted running of go)
2 F' {2 o$ X' f# ^( W9 w- ?9 H8 W! U1 j
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~~
; v2 T' k9 u* J, m2 [7 k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
6 e2 k" R$ i6 x, T+ t! x; oglobals[
' m' e3 V9 B! ]4 K# o! B+ r+ v+ {xmax
. h, H/ d* o1 P& Q6 R. f+ O% uymax
3 I- A3 X  f+ Z% V! ~global-reputation-list: X) d  E: o- o. j5 D

* Q+ l1 Q* }$ d& k;;
每一个turtle的全局声誉都存在此LIST
: m5 Q1 f6 _5 S' s( {/ X. U; Jcredibility-list  a/ f7 T1 C* |+ x$ J0 G
;;
每一个turtle的评价可信度( u) h! N2 O. _, a; K( Y' k+ K8 j+ l5 q
honest-service
+ P& J: m, y- a( l' f7 Punhonest-service
/ S* \2 {* s! n, }( N- |oscillation
! C/ ]8 h/ z8 ]rand-dynamic( Q5 q" O, r3 Z  F& g4 h
]
8 b! N5 L9 x5 c, K( \
5 N5 s& ]; i$ ]$ Y- p* r4 Uturtles-own[3 m  |+ @) U3 X6 {; E
trade-record-all* P" s1 n- M% b4 p6 d
;;a list of lists,
trade-record-one组成7 |8 b7 g$ y  l& t
trade-record-one
8 r3 P5 }; Z5 Y- X- z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. O! q7 U- m  n8 J' Q+ E' v7 f. N
;;[
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+ R  d5 ^- C, }& |% b( btrade-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]
: {4 N- {. q$ C6 ycredibility-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* D& f$ z) P& D% u8 M- X0 {
neighbor-total4 A7 x0 ?. \  S* A
;;
记录该turtle的邻居节点的数目
3 U8 k) j) _% V* ]; Z! mtrade-time+ w# @0 z" b' E. |! |& O+ S' P. [
;;
当前发生交易的turtle的交易时间2 m, {& [/ @$ V% j  y
appraise-give
1 {. y5 u/ c$ u( \;;
当前发生交易时给出的评价7 ~' J8 |; a% l
appraise-receive) @6 A2 `- L4 T- }# Y1 b
;;
当前发生交易时收到的评价
! k( ?1 S2 {0 A& lappraise-time
+ }: l: t4 e5 M5 N' N  T  j;;
当前发生交易时的评价时间' m3 Q1 _0 \9 _) u8 r, D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ F# ?( o, L* J. [) d2 f/ x# q
trade-times-total
7 `% A: i+ T) W;;
与当前turtle的交易总次数( I# k4 R2 V" n$ ^! D7 T
trade-money-total
5 O; Z0 a. U. M$ x;;
与当前turtle的交易总金额; a2 X/ K* H9 R1 v
local-reputation
; c9 Y6 ?0 d( n& f9 cglobal-reputation
) U) M6 x; l9 L% e4 s  qcredibility
2 {/ `7 ~$ V6 ^% T( M;;
评价可信度,每次交易后都需要更新
: C2 L6 g/ }, V  Gcredibility-all" I. C- C. N* D" ~7 h  t! X
;;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0 A# Y* y: O* b1 A) M# L

0 x" ]2 S% N0 ^& r; G. X;;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: [4 A2 w) l$ {credibility-one
8 R/ @5 C  O& `! D( o+ u' ?1 ?  c;;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
+ E  n$ Y9 m0 s7 sglobal-proportion% G( V2 a$ d3 F, l6 n0 p$ u; [. S) P
customer) b/ h, O" E& [  p' f
customer-no
4 F5 s0 k7 P& \0 mtrust-ok$ {2 ^. `% A9 O, A5 ]
trade-record-one-len;;trade-record-one的长度
/ Y3 s1 |/ J+ k8 n  s]" o, F: D$ s' y/ }

1 E1 \( [# r: D& ~9 C;;setup procedure. V' J" p" U/ X6 d( b7 @& ~1 h

- E9 I" K7 d; |- N, M# N+ mto setup
3 j+ F/ d5 q8 u0 _3 l& u0 K& z. ^( ?! Y' t; {
ca

3 T9 b8 Z7 J# _0 ~: q3 o; y. K  J
: v) _. W4 o) Q' ]; Z0 Q9 j7 f9 ]9 winitialize-settings

7 [# \) @4 f0 J# P' z2 Y- A: U0 r8 Q! ]+ ?7 ~6 }% q. o
crt people [setup-turtles]
5 i" a3 \) C# d. @+ X

7 v& C9 G, O7 j4 mreset-timer

/ u8 d2 O+ r' @$ u' }, i5 H) V* q: [& d7 h( Z% l# A
poll-class

4 [; I1 n1 f+ q0 {' s' Y) v& G8 g  p% |
setup-plots

( D" O$ F- M" a) z. n: f
4 p* x* p# I6 k6 kdo-plots
- m9 M/ G4 H: c
end
  t$ L) d2 S* I# j; p
4 d& E  }  [. C1 b7 N: Bto initialize-settings$ r, A/ U( x0 k1 w' R5 ?! A
# l# S8 o# W) J/ d( d
set global-reputation-list []

$ |  v7 q) d* {( }$ m7 \0 s; \: D( l6 j- D3 n
set credibility-list n-values people [0.5]

: c( R) w( n9 i* j' Z
7 Q- ^7 X7 s& O( q7 [set honest-service 0

" |" a- z& Y% O3 q: b( B& [6 N9 D0 O
set unhonest-service 0

- h: b7 k4 c% B
$ }0 x2 y" \" V% g3 q+ Oset oscillation 0
8 w7 K( J% d2 P& q# s* F- u
9 U0 f; p: e# m: D; ~
set rand-dynamic 0

' s, `+ e9 d4 p& s7 |% Oend( C- H, M2 w' j& I7 q! R" g

* a1 {  n6 \" e" s) ]/ {, uto setup-turtles
" u- P: I- n7 aset shape "person"0 B6 s; F- M" L* X
setxy random-xcor random-ycor
2 G6 B; E  F5 l. h% r# I- J7 Rset trade-record-one []
$ B3 S% ^  L! P: Q! W/ M$ x( }

# z; \( C1 ^+ c+ a. [: jset trade-record-all n-values people [(list (? + 1) 0 0)]
( _7 v7 q9 E' N' Q
/ r7 h& |$ W* l' m
set trade-record-current []
6 A0 b; R" W; e: W$ eset credibility-receive []
4 X' c7 x2 p' v" p' M4 I4 ^! `set local-reputation 0.5
1 _2 Q, H8 N6 E( N* B1 _( E4 jset neighbor-total 0# y6 e9 d% B/ m
set trade-times-total 0
5 {3 v% H8 Q' iset trade-money-total 0) b+ Y7 w. a2 C
set customer nobody
: |- O- T- n& t" l9 H* Zset credibility-all n-values people [creat-credibility]
$ x4 C) ~$ N* s/ k1 P) yset credibility n-values people [-1]
8 @+ a9 f# y  Dget-color# _8 h3 l" c+ T* [- M: G
" \* l. j  _9 @% v2 G9 t# B; f
end
5 H5 Q4 E5 c; A
& D4 m% I8 [" r3 `4 A6 Q1 l; `to-report creat-credibility
& |9 o  A" o% U% ^: ~0 p) qreport n-values people [0.5]
/ V- ~) Z$ S4 e5 _: D- M1 i  Fend: a0 K- R# t  a" x" L. Q4 S# `

3 C; X7 @; r0 l$ o; i9 Mto setup-plots
% v3 k8 t. k  W* N. A' ~8 N
3 d/ l& T, T; c, |8 B5 Aset xmax 30
) n' B% y8 ]( p4 t8 N) Z

% e* D' B* r: ~2 j# u+ u! rset ymax 1.0
% X4 Y8 S; }' K6 H$ m
& F" K, T: }) d+ W5 T! s$ h
clear-all-plots
% g, Y$ c9 H) r' q5 h/ L

( `- ?- d% e1 ~, o5 usetup-plot1
, }: M& }) F: U# D" S  n

  z. [$ a2 b# m3 q7 j) Isetup-plot2
# V- U& n7 U# T9 w

, H0 k: W# s/ m+ @# }' S& Ssetup-plot3

/ Z! o; s+ J. ^( @, _' h5 Send8 c! \! p5 u- x3 j( D

/ |' B2 W* T$ f: `3 v" x6 C;;run time procedures* j! Z: S; m5 x; H% s; D

/ R- I9 U" a1 u5 A4 hto go6 W* F( p: I% [" H  D
* k% Y5 }. E( h  Z
ask turtles [do-business]
! b1 o7 K  U2 _8 J4 k/ k
end7 l, I! M; r0 `. |

8 H3 U- P3 ^6 Z3 V0 p. k$ `" v; K' oto do-business
! V: A1 Z# h) ?: j( U7 Y

; O# T7 X8 |* u3 C' D
5 d3 w' q3 y! p+ p0 H4 Lrt random 360

( Z/ T6 [( `( n% L8 {2 H6 ^# }1 T7 J) F. q( b! {9 v" v
fd 1
( t3 ~8 k$ r: q

9 C1 `( L4 B, J6 O$ Cifelse(other turtles-here != nobody)[

: V  x! |% K. S8 u) W" G7 j5 Q8 k8 t, N* X
set customer one-of other turtles-here

1 ]/ c$ o4 g& P6 ]1 K' {. Z1 [2 N/ `% W! s2 ]
;; set [customer] of customer myself
) s2 v0 [3 _) u  P

+ {0 }2 k2 U' o8 Rset [trade-record-one] of self item (([who] of customer) - 1)
8 t* ]+ T+ k: f* \  l  T[trade-record-all]of self
# ?- r" M' F) A" b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# M. l& p- u1 |( ]1 M/ L" p3 |) e8 S3 b$ N$ Q% ], N; e
set [trade-record-one] of customer item (([who] of self) - 1)
4 Y5 l. ~$ N* G% Z& N- s0 v0 m[trade-record-all]of customer
% R1 J6 l" T3 v, r  \' M* s( j

& O* |0 x. C% Y- B% eset [trade-record-one-len] of self length [trade-record-one] of self
* V9 e! L5 q# h; }
9 f/ L& z% `: c) ]1 e# b/ l) a: j) V
set trade-record-current( list (timer) (random money-upper-limit))

2 D7 m8 S3 t* e5 [2 B3 h
2 Z, f1 o/ z: {ask self [do-trust]
: H* ^2 m5 s9 ~) b;;
先求ij的信任度
$ ^: @- I7 D9 G- \+ X( i
7 h/ w, ?/ x4 Q" ^: N0 sif ([trust-ok] of self); w7 X% W- G8 J
;;
根据ij的信任度来决定是否与j进行交易[
7 ?) G2 L' i! R* f0 I7 ?9 y" O' Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. q0 [) @* ^& a" }( T7 b1 E9 T) n: d$ }' f/ m9 @# A$ v
[

" g6 c! }# ?' Y, B# L
0 M1 @# Y7 C  ]" U1 w/ w: J. fdo-trade
8 e0 @( {) k' H. R; G( Y  R

- O. x# G. a3 z! |3 f; G. uupdate-credibility-ijl

5 c; c5 i: V  _# W4 Q% L4 M( S9 u
update-credibility-list2 K% c& r! w  s- A
' e  o* s/ J& L6 c
' h& U1 a1 M7 L5 K
update-global-reputation-list
# O. u, i7 V. Y, S( x) s

$ ^' U5 C4 i! r' Y5 Rpoll-class
: T0 J2 }/ }9 X6 U

! U- A7 D4 r5 e* ]* r  T7 Fget-color
! u" A1 U# E. [

5 t8 J) v. _9 Q) S; Z0 P]]
8 m6 m6 x0 I2 z0 U
* E# e$ @" R' u( Q# E;;
如果所得的信任度满足条件,则进行交易
1 W2 Z" M6 x' _7 D
' E  p6 W0 L2 Q/ `/ s8 w[

: y' W- a! X+ D3 g1 [" G) s
- |$ ?7 ^. |" s/ ]$ Rrt random 360
: x  @& v8 N8 @% o0 x* }' R4 k
, ~: l, v6 V; M2 H; E3 M3 T4 l) _* W
fd 1
. k) B+ c4 ?" z, T. H* _

0 u6 D. @3 G: j  S9 D' {2 X  E3 p]

7 o0 X+ L4 h" n! d  i# `$ j
- B9 G2 U  E7 v1 tend

5 Z! L+ S7 x4 K8 t7 e* J  I# z$ S, E2 f2 C
to do-trust # g/ l0 W: W5 Z6 L
set trust-ok False3 E* i' U  v. X" L- L4 i

5 G" \- R  G& O3 b
+ p4 A2 c6 m/ M1 A1 b6 q3 Z* h
let max-trade-times 0& P, f% \! C7 x3 K$ l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 u7 ~& E, z+ F# a; D
let max-trade-money 0; U+ E* z+ W1 H0 G5 l: H  c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ E. }* l1 ]6 z, k3 D2 |: a" \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ i0 \* @2 M( k* A1 ?! h, i9 i

/ D$ T9 A# A6 }( g0 d& U% k( Q

* X! q3 `+ V+ A. gget-global-proportion" T3 J- r0 f2 p& A' ]* E3 t9 K
let trust-value
( a2 K" {+ G2 u3 |, T/ wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 d9 u% C; U' v& y" s
if(trust-value > trade-trust-value)4 g& W+ \) R( N  {
[set trust-ok true]
& R, M5 L* w2 x1 e; Cend" B& B! H( J* x( E" k( {- s
( [& Q0 f0 K) a- J/ x4 X1 h
to get-global-proportion! ]' u2 k7 S$ q5 u  f8 X. |6 C# U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 K, O5 ^/ O, o1 @' h[set global-proportion 0]
; |! u4 D9 M# N1 e[let i 0
8 C& m. d- ]9 T, h: Qlet sum-money 0
" B! `. x% d$ l$ `* `/ H' i! Kwhile[ i < people]4 e% m/ S6 Z6 Y2 o8 K- |. Z7 ~
[% r; h' c# ~& N: ]3 m3 d
if( length (item i* h) t8 m5 I9 i' l$ n2 ~3 ?9 A
[trade-record-all] of customer) > 3 )

) k4 }  M5 c& U. d+ D7 e[
- f% @% v2 i9 Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" ?8 M7 l* I/ l3 c
]  b* V) x9 x8 x& N, e
]
( e3 e( o5 P" o3 _/ Slet j 0  f* l% ^' o$ D1 \
let note 0
$ |0 u/ E8 s% Wwhile[ j < people]; h; e4 P! H+ [7 m9 X2 v' b/ ^
[4 L" ?) W/ Y; \9 \
if( length (item i
  O: w) n6 K0 s$ G$ Z[trade-record-all] of customer) > 3 )
: M' x6 u8 m; |. a
[; m8 V% e! h( M2 F. i3 H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 f1 z3 t9 r* [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 J9 A1 C* A  P. u# t! c1 L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 |. C0 R5 l! y! K( j
], s: f- e" k0 @0 f
]" p/ o- q  U( y& |
set global-proportion note' i6 u# g% h8 F7 Y
]
# J( O3 N6 w4 C8 @0 A: \end
3 \( Z, [" a3 p. ?' V1 }: s( m* z+ N) K, h' C
to do-trade- s8 j" L; m. T0 w5 e( q2 h
;;
这个过程实际上是给双方作出评价的过程7 e: t) y8 J+ F, R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, J  R. n% \9 g5 G& o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( H0 r% O# w2 p3 i
set trade-record-current lput(timer) trade-record-current
# w' x" G: C. f$ F' H' L1 q;;
评价时间
3 P/ ~6 B: {& }8 l8 A& h, nask myself [4 X& k% c, s: t/ I4 @' w# f' Z/ k
update-local-reputation
, E' o" v* i( Cset trade-record-current lput([local-reputation] of myself) trade-record-current
) N4 N1 c8 V" v2 Y; B9 Q]
( Z6 _  U2 G: q( n& G- C' Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& H( }% M: _7 [;;
将此次交易的记录加入到trade-record-one% X1 D2 B/ y; r7 z3 j' b5 W. D+ T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  ]' U2 {0 r) z/ u; @: P, U5 P
let note (item 2 trade-record-current )2 F: p+ g2 a. X: L8 i
set trade-record-current
% A4 S  n% o8 Q0 l; [" @8 E$ z% B(replace-item 2 trade-record-current (item 3 trade-record-current))
6 W0 z& d7 }. @' z6 F; g9 k
set trade-record-current
9 ^- |6 T% \' }6 U  V(replace-item 3 trade-record-current note)$ I' A" W4 k# z' X" a

' r, G( U$ K" r* h! b: \. U9 y

' ^) O& R/ K& {* {* w$ W: vask customer [" R' M; {% W4 T: U
update-local-reputation1 L0 g" n) J( H
set trade-record-current
. I, y0 h; A, E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 {* l; j2 W0 y( l]' f: ]& V! y4 E$ M

4 n: _9 X; o$ i9 f! O: g: m  S

2 b. {* {: z/ E8 ^- [% fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& T  A6 V( m8 {  Q  q7 s
' j# f/ U+ k; K) `  @3 J" X" b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: R7 o! D4 C4 C! R3 e;;
将此次交易的记录加入到customertrade-record-all
( S* u& l$ H( f0 `7 @7 O, ^end, w2 x' K) f: ?! B, k) Z- X

$ j, P$ `; K* b4 L3 Q" |; Sto update-local-reputation" H' A  _$ {+ I) M; W) c, t: W2 N, f8 s
set [trade-record-one-len] of myself length [trade-record-one] of myself7 d* i4 k( U* r0 j
  }$ o+ m& Y9 j$ I0 k* E

( V) s) C, g7 ~- }. Y/ T! @- M;;if [trade-record-one-len] of myself > 3
5 ?: e: l( h# n2 O5 {, c
update-neighbor-total: S* Y" S' V% S- F1 d6 m- o0 b' b
;;
更新邻居节点的数目,在此进行
7 m, T) Q' i% v. M5 ~let i 3
& T' t0 K$ T2 j4 i+ }9 blet sum-time 0
3 _0 j7 @+ ~/ p+ I8 k4 \+ A( owhile[i < [trade-record-one-len] of myself]
" C. W" s8 Q8 B- c6 q' {  e3 x, _* T[8 ~1 }. @0 ~0 [# ~% i- H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 v$ A/ z( e1 {) s
set i0 n; z+ E/ I/ ]$ y/ b0 Q* w3 s
( i + 1)
  [$ K+ }  @  Y" u( V7 b# {$ u
]
& R( G7 h7 x, N+ tlet j 36 M2 R& r& \* H# p
let sum-money 0
: F3 h1 x. N6 awhile[j < [trade-record-one-len] of myself]
8 O6 N  p# u% e) S[
+ @; W& u; o& q. T% W# z( yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 q2 Z% K4 k7 C4 C% }$ L
set j
+ {/ a& e) E' h& L1 d, q( j + 1)

0 R- T( V0 k. z# k. h! K]
4 K' C4 d4 y9 Xlet k 30 N  l4 E! @0 D. L. ]+ z% l
let power 0
' y( i9 f5 O/ x/ b' Q6 ulet local 0
0 S9 j' q+ B( P3 V$ ?3 Pwhile [k <[trade-record-one-len] of myself]7 \' w' t. m2 x
[- \8 m$ O5 Z& Y! s* ~4 x
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) ! ~  Q2 L' L5 Q. l/ Z& b  ]
set k (k + 1)
5 r0 p% ?! b3 C3 o9 p]* Y9 L: u( x6 N6 Y$ D
set [local-reputation] of myself (local)
' M3 J- f# M* |6 ^8 [, A1 F! Yend
3 }3 g) M6 z8 L  n+ R* b, a1 S: B% L+ J1 `* V0 X0 Q
to update-neighbor-total; ~$ S" S" R; g% o0 T

* n3 A( }- l6 k% j* R; hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) A1 }! l! X5 w
3 `& W6 o3 b+ g+ k2 F5 Y7 M% U

; l2 ?) H) y( H9 Mend1 \* ^8 v( L& O5 q/ k4 E

+ y  _  r8 G9 Rto update-credibility-ijl 9 D/ a) E/ }9 g

) `5 K1 A: w6 c, @# @" v. C# H;;
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。2 y, u- A8 H) F0 {4 L# t& {" U
let l 0. Z" N- S3 R) G7 O2 U/ _
while[ l < people ]' r8 a9 q, m9 A) K; A6 x2 A& ?
;;
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6 Y% M0 S# `# y; V5 j
[
9 i! T( A3 E2 i2 o! }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' W' E. \: P; s( {% V# I; J# s) \if (trade-record-one-j-l-len > 3)
. N* O* R, Z7 K3 o$ @: r5 [. A[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
' B& c2 e8 C$ dlet i 31 E; r- v3 |1 c# t' ~
let sum-time 0
7 I: L  g, x. Z$ Owhile[i < trade-record-one-len]
2 U1 f- |% S0 {+ f[! c4 N' @& T! J4 t1 q; {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" c5 M/ g5 V, H* D, r# w4 ^
set i
1 w1 f$ i: }$ \: r0 f* b( i + 1)

2 F- T: `3 U9 ?4 U6 m]
4 s) \; ]! S* S: e8 [# glet credibility-i-j-l 0
+ m9 T- |4 j* X;;i
评价(jjl的评价)
6 O6 r' @7 X+ h' ?6 q% m" Qlet j 3
4 _* h& a& b* L. Clet k 4
2 g1 _' q/ w6 T3 F" ]" {while[j < trade-record-one-len]! O% R, a9 T8 l1 u; f9 X$ X: ^- V6 V
[
% ]% X  j3 F5 s( v; F. D2 }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
  q" J' O% r- k- S2 \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)
# \! X. @/ d' k/ ~. S7 rset j" h" U( s. H7 [8 M+ `
( j + 1)
& c3 w# s9 z# P& v* W; Z, d$ b. x
]
$ I* Y) N1 z$ U: D6 h0 Mset [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 ))5 k) A0 U3 c. h

  h4 B+ [0 K1 N3 I1 {& G

' B, T% E; E/ l. i! K0 llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 Y0 @7 ?+ r% `3 z) _& ?5 f2 P2 r6 t
;;
及时更新il的评价质量的评价7 M8 Z# K0 T- v7 f  a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 x1 A+ E) |! r% e: \
set l (l + 1)
+ Z# M% Z4 R% }& R9 ]]
: n5 O6 h+ t2 Y' O: Qend* X2 H$ X5 U4 {2 H
  J& w2 z% d, K& c9 M
to update-credibility-list
3 Q4 B$ Z1 [& g. `( ?let i 0/ {  I- r: x6 q! ?3 x; e7 f
while[i < people]
+ J% [1 [; V0 h# Z3 n[  i8 t$ a) m, I! k! e  M7 R* r
let j 06 @& D  U3 P& T* M, D
let note 0
# l1 i2 ]0 H5 M# f6 Xlet k 0# {6 f9 ^# P; n  W& A
;;
计作出过评价的邻居节点的数目
% k$ i' y% w% b! w$ a( jwhile[j < people]! _$ `* q* H+ X0 G; b. I
[: U7 h& Z; w4 y0 `) x' a7 Q$ Y
if (item j( [credibility] of turtle (i + 1)) != -1)
* |/ O% ]8 |4 {: A" K;;
判断是否给本turtle的评价质量做出过评价的节点/ V" V$ G& R$ K6 P
[set note (note + item j ([credibility]of turtle (i + 1)))3 c' ]; b  i6 ?/ [" n" G; _
;;*(exp (-(people - 2)))/(people - 2))]
, K/ h. `% ]7 i$ l" E/ E
set k (k + 1)+ z5 Y2 G' z9 N; c5 Y( o
]
8 `0 g2 W$ d! m, x7 y9 n: L  pset j (j + 1)
2 _  |  G( @7 }]
0 _* T0 |/ x2 j* G5 n( |2 D) vset note (note *(exp (- (1 / k)))/ k)
7 w; O5 Q  ~" p# mset credibility-list (replace-item i credibility-list note)* S9 U+ U3 f% L; @* i$ R
set i (i + 1)3 F, X: \# [: D- ?$ Q4 B- ~. c
]1 e; a. ?% e+ F+ C
end
$ Y! r& B* h, O' ]/ Q9 ?- N
: B0 P. d/ G6 V) b1 Kto update-global-reputation-list8 Y3 }, e6 \0 a4 ^
let j 0! g  U3 A6 q+ `+ r1 d+ `# p& P; k2 n
while[j < people]/ l1 c- q# T2 ]" C# a
[
1 W6 |& w' ^- i3 u. E6 X! tlet new 04 E5 Q1 {% V; E, T% \5 L; H
;;
暂存新的一个全局声誉
2 p' O! `& ~7 q: j* G+ Blet i 0
: |6 m" w* s1 |* Q# U" V% Wlet sum-money 0# M3 Q0 R2 r8 f3 O% c
let credibility-money 0
' t% \6 L6 p5 E" swhile [i < people]
5 k4 }& c& T1 q- l, k; C, `, \[
; D3 z- ^; P0 t( c. ?% Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( l( j' d  N# M# @* Y) F' ]& wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- V, ^4 ]3 }5 C0 F( m! ~( y" T4 r
set i (i + 1)8 ]+ S( Y5 U* H/ T9 i9 x7 S
]
& L2 L* H; a" @+ ylet k 0
, W8 C, b! G9 c7 mlet new1 0
7 t( O! M( ~! m1 f5 Y' O# v+ c. b( fwhile [k < people]
& R( E, D5 k! }1 i( r[
0 m" C, @0 j4 `* \) Dset 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)8 |1 F+ G* W! s9 J1 C% J. H, s
set k (k + 1)
& p7 c8 `. m) f  S/ ?, @6 I]! O: _2 J( H% x$ A- E% g: a% ?# F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 l: w% n5 ?0 r  H7 N" P
set global-reputation-list (replace-item j global-reputation-list new)  t# T" c- L" a4 A9 i4 K4 W! ~
set j (j + 1)' x7 X! x* s: @. D+ ?+ d4 _- T; b# j
]: m9 {% b: L1 H0 K; U, Z
end
% B1 h" I% D0 _3 z# B, I8 l# U% d7 x0 S, N, k7 ?
: j2 H6 X0 O* ^* l
& F9 ^8 |: h; }/ L' Q8 h
to get-color' B' O) C1 s- Y* f

! |& H$ z- d! r4 x- Q1 Bset color blue

* r8 l! K! d& S- h$ @0 Mend9 `& S( ]: S. I0 g, H

: u) a" i3 E3 C. s. G- _0 Ato poll-class+ O5 t1 j" k  s) _/ X0 w
end
  G# }" Y! x# L& p$ ?% p: L0 @
0 }2 q" a9 H: c( b) R0 \) eto setup-plot1
$ z; _$ P2 f9 P5 ^* V0 p; x" A! j; O4 e  F# W' S' D
set-current-plot "Trends-of-Local-reputation"
, W3 C$ \: H4 E+ Z& T

3 j% ~, D; j+ W7 J* [9 V/ }( q9 aset-plot-x-range 0 xmax
) ~- b% c+ v9 U9 g9 g

5 s% D* z8 w' r  gset-plot-y-range 0.0 ymax
9 K: u+ ^' I7 M7 z) _1 K9 Q
end
7 }4 v* U. R3 ~+ U2 A4 i" I
) t$ t' e5 j2 x) _1 x) nto setup-plot2
2 I, N1 B- B& }0 N
. T$ v  u! L- G5 f! ^. L/ Rset-current-plot "Trends-of-global-reputation"

) l$ ?( G: O. X+ z$ m9 Z0 P/ \  `7 A
2 N" P6 Y6 c+ d# z6 U7 A1 B3 {; y  |set-plot-x-range 0 xmax

8 e* R8 I2 V9 @3 F. y  ]. {
9 D( [: t6 M$ \9 O. X: eset-plot-y-range 0.0 ymax

  ~1 x( c6 w' ]8 T! k0 mend' V5 m3 [6 @. B( A( J$ h

7 K% A9 p& H: g* k7 a+ Rto setup-plot3
# S. x& z2 e" |. c
. O2 j- A1 g8 m: r% ~) }1 `( _set-current-plot "Trends-of-credibility"

3 @/ Y; e* c/ f# J& a# O
% m' M: N: S7 d/ r+ F! G3 R4 s$ V. Dset-plot-x-range 0 xmax
5 W2 f' k+ T+ d- o8 ]. e' l

/ C* C  |. T& D# dset-plot-y-range 0.0 ymax
$ ^  y" O0 U; S) f
end
. i0 r0 |8 ^, T0 V3 M
' @1 R0 [% l  J" q' T, \+ o* \to do-plots
5 |( O- q1 L. Y9 z% w5 H1 Uset-current-plot "Trends-of-Local-reputation"
! F9 M* _3 C7 |set-current-plot-pen "Honest service"
6 z* E5 V" j& N- G1 J7 nend0 p8 ^4 Z7 c% [0 A, i. p3 ]

4 D' h# R* ]; b8 j[ 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.
. p4 ], F9 R2 Z  R, y5 K! P+ M3 M; e/ k- O* D6 q
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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