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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:/ @- y# B) H) G& c5 a! Y
to do-business
7 F, R- n3 p% t% U7 y, ` rt random 360* g5 I- i( L& k+ ~
fd 1
0 h3 M5 V. }& {6 ^7 q. B ifelse(other turtles-here != nobody)[. F9 z( T2 D( G9 ]4 i7 `) ~7 {% k
   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.
% V+ J- a8 D& G' |* Q( ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, p! |5 N2 R2 X  T1 x( n4 x  d* E4 y* p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 M& D* r# j7 {; ]( h9 [- u   set [trade-record-one-len] of self length [trade-record-one] of self# P0 h, P4 n3 |8 I
   set trade-record-current( list (timer) (random money-upper-limit))- T" I# X8 f( n, J" |8 ]

2 I$ j1 a6 Y. q8 }+ L$ T问题的提示如下:7 T6 H8 ]2 }- b' _1 b' I8 A

% s+ X, z/ F  O3 [+ _# _error while turtle 50 running OF in procedure DO-BUSINESS
$ h, ~7 M6 b0 s1 @6 G; ?9 ?7 ~0 Z5 Q  called by procedure GO
; \# o. ~/ h; {, MOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 U! N9 m3 Y+ g
(halted running of go)
$ G. H4 A& A4 v+ Z3 F
. o; {! d8 Q* p( z" d) K! f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~~; M; g, E, x& P0 ?/ k1 H3 M
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
" |: J2 D: @, {globals[
* @( Z" F' o" f* K# T& f: a$ E+ Vxmax$ @& E& z9 ]9 q4 E# R% k
ymax5 K  e) k& f5 {
global-reputation-list
! v" \7 T, A4 a) P# F' R) D) u" \" r) [  e1 P6 t4 n  P" M
;;
每一个turtle的全局声誉都存在此LIST
, o/ y0 f  R0 Y- h! Pcredibility-list, B6 h9 ~& h5 \; p# u
;;
每一个turtle的评价可信度
* Q1 K7 a# G- r+ p  D  x/ E, r- W: Rhonest-service0 s! {8 i  W& o# Q! n6 a
unhonest-service. d, f6 _6 Z7 d! T
oscillation7 `( O( r: K8 Z+ h" K' b0 U- {# @
rand-dynamic9 l8 J! K1 S' I5 S
]
0 [: I: o" Y) |' d6 g8 w: @) X" D3 p, M. ^$ h
turtles-own[) l" G' f+ @# s7 x) {- `5 R% X
trade-record-all
: y$ N2 w6 A! N6 ~0 t;;a list of lists,
trade-record-one组成
7 \. b( \' r6 c" N* e, l& z+ h1 htrade-record-one- Q$ e, S, V3 |) p7 {$ `0 v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 Z5 V$ H& O; j8 `& U) |+ s+ H5 w' k$ d/ c0 ^4 c: e* v
;;[
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]]
5 |7 M* y9 u0 f( B- Ztrade-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]
. ]$ K% q( Q0 d' @) f& s7 p! ~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$ U# ]) e  r5 G4 ~" E( ^" D
neighbor-total
% A/ j3 @2 w/ d% @7 J. `7 p3 Z;;
记录该turtle的邻居节点的数目3 q* Z5 u/ I7 K9 S# u! \3 M4 o
trade-time
% g8 J) j# A1 `$ Q2 q;;
当前发生交易的turtle的交易时间; e9 X3 J5 T# M$ b# L2 @
appraise-give' W3 `6 l* E; ~2 f5 u( v% i6 x9 P
;;
当前发生交易时给出的评价, A' v# r; I. w; b
appraise-receive
+ x  I5 T7 {' {' X6 p0 n9 u& t;;
当前发生交易时收到的评价& I8 M2 }' K# Z6 g
appraise-time6 E' W! M: L% {0 H0 E! y$ T! v
;;
当前发生交易时的评价时间) u6 B- _1 p* _# G; h8 A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; n! J! D  k: B. L; F2 [. Dtrade-times-total
7 S1 `9 X/ n8 z* c;;
与当前turtle的交易总次数( z5 h/ x# Y; d+ y; j8 s$ e2 M
trade-money-total3 p, a& a' c$ H  [# F8 H, X
;;
与当前turtle的交易总金额
  K4 }6 H$ M9 d4 G3 rlocal-reputation
% k' d3 O2 g6 y) J) s; N/ Zglobal-reputation: g7 X- K9 `, x0 e6 H9 Q
credibility+ D4 K% B* I8 ?
;;
评价可信度,每次交易后都需要更新# I% o" Z! [& n- s/ A) a
credibility-all
5 E& F4 i$ ?0 Y! `2 T. t* U8 c2 z;;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. c' \* }* K2 y% W2 r' ]

6 K# ]7 }1 H# b# r# [2 i: ^;;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  {2 t, }7 b- V/ W/ z
credibility-one4 |' k  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
! _7 I* u+ V( Z& N7 e' bglobal-proportion
- I7 B/ ^8 C# V% M1 ucustomer7 }( K- F8 z) i% G% d4 J
customer-no* K9 D+ d' Y% H5 T# s6 c$ i% `
trust-ok
2 }7 f7 d) N+ o  z. r3 A/ Utrade-record-one-len;;trade-record-one的长度" z0 E/ l6 P$ U0 A  J( |
]/ q0 X# c% A( }9 C

$ S# t2 o6 H: \' Q4 S;;setup procedure5 e( [: ]) {! l5 O% U/ ?7 l: S" f8 ?

$ ~$ S2 v* B- z# ~to setup4 I- v6 A& o( p  {; H
. e8 K4 B* i7 T: R
ca
. V  Q5 Y; J+ N  |3 Z. o0 y4 k

0 G( s5 ], P) n! t% `$ yinitialize-settings
  m! n2 x  o* X1 K; A( E0 g7 k0 w

1 Z% E6 _0 o; ?; T; Q7 wcrt people [setup-turtles]
. H& F+ J, Q4 }; }

4 O3 v% z8 A- V  K4 Yreset-timer
( s' m$ Z2 v9 [+ U! D

* F' O2 H  y) H6 @3 S, E  Vpoll-class

9 b4 O- B$ g7 u' l# C6 m& q2 x) L; E3 @; c7 A2 ^. c5 u
setup-plots
2 `, |) O5 L- ^3 D3 L( b& m% `$ ?

6 P7 w7 ~$ x/ ?4 w7 I0 O  w" ido-plots
0 s% z. X: B# x( ^* v: q
end
. s: L( X$ ~4 |9 m9 R0 v! l* [- W" x1 {2 d! q) y
to initialize-settings( D& X* j8 W' H* g- }% b8 [. k

6 N0 o9 V! P' m7 f: G- d) @1 k3 sset global-reputation-list []
6 k1 B7 c9 |" `" B5 z8 q
* U5 v) k7 |; d4 `! Q
set credibility-list n-values people [0.5]

3 t. f4 V/ k( {
- I: D: i2 y4 w1 n+ z! @set honest-service 0
) v  j8 J+ `/ H- w- Q
( S' N, u9 l; u2 N- L: X. X4 l
set unhonest-service 0

8 }, q- z* D7 Z. c
3 _* ?2 I4 P5 o: n4 ?# l6 fset oscillation 0
" i* o' u% r+ _. C
% {! e5 v4 t  H# F2 a0 d
set rand-dynamic 0
+ l+ C$ m: y+ `& L
end0 d' r6 Z, G% j  u- ]7 \

8 X# `& Y6 y; S" Uto setup-turtles
0 N, [" ~) V4 z5 ]# Qset shape "person"
2 j2 h. r/ {9 Nsetxy random-xcor random-ycor
8 a! N* _2 U: v1 _2 ^set trade-record-one []
* B$ f; g  ]- U( p

' A% c- X% |! M) i; Wset trade-record-all n-values people [(list (? + 1) 0 0)] / |! F2 h8 r5 g+ D! h; }2 S

) e3 |- K$ d) Iset trade-record-current []
4 r; n2 j3 f4 \; U4 `  aset credibility-receive []1 K( {; |" M( x7 m! t9 O( J/ k1 H9 i
set local-reputation 0.5- R  \% b8 M; W
set neighbor-total 00 l* G2 ~4 B( o& z* M# a1 q
set trade-times-total 0( @7 c7 g# T1 b& g( u8 O
set trade-money-total 0. t. M7 s4 T8 v, W; t1 s: N
set customer nobody
6 H$ k/ i# ]9 I  c% Eset credibility-all n-values people [creat-credibility]
5 v- k) o  C$ E8 T# g' Wset credibility n-values people [-1], d6 y! i5 J) m) f% z+ X# _
get-color  x$ F2 t$ ?, [- ]3 s  g

0 k3 V7 z( s: I+ {end* a5 z: {4 \' A; X! V- V

2 q- W  e) P# O7 U& m% ]to-report creat-credibility
8 q4 D4 K) a% J2 v2 _# |6 m+ lreport n-values people [0.5]+ G+ @) s1 Y0 ^
end  Q  g3 Y2 L! y$ t3 V$ f
6 ?' s+ X2 j4 n
to setup-plots: V: l! s/ K! I; S: c5 L4 D, \

  v2 s8 C6 G6 O% P, iset xmax 30
' g0 a8 o. X' E( R  c7 h
& Q' f+ y, `$ G8 T+ ~% u) p; C1 X
set ymax 1.0

! k3 E2 r. P; h: A( f+ G' y) X' }! G* N! [2 X7 Y: `* D. r
clear-all-plots
, |" W; Y. f' k& Y
9 O8 I" t5 q' H+ d" {- C
setup-plot1
1 e+ h  f: G. ^

' s' Z5 w2 @; H, m4 C3 Jsetup-plot2
8 m9 t" D9 V+ i
6 e- v0 u; S+ _- x
setup-plot3
8 j8 B0 h" D" |
end' t, j% f! o4 [
9 p. b/ S: j8 h; L# ~
;;run time procedures2 s9 h2 W' r0 p, m: E# X- [& D( n

$ `* {3 N" F- t9 I. u) eto go
9 V6 }  [6 w  M, B% e% O
- ]4 ?2 `# i+ F0 Dask turtles [do-business]
' @, {, `0 x$ _7 w2 G
end
1 r8 j2 h" M; z: W, y7 j
0 ]9 N9 n; r, K* W7 Vto do-business ; M: D: s, {) q7 @

+ l' l& i3 h5 s9 D; r- S7 [$ w
' I  n2 L4 n( t% Y$ C; m" g8 M: Wrt random 360

* |0 Y" v; v. I& F) a
4 ?5 g7 O. H' D8 d" ~$ Qfd 1

* x/ g% t# x( Y/ K2 Y5 @+ Z
0 R) R' v+ U, s$ H5 nifelse(other turtles-here != nobody)[

2 r( a; M# V/ A8 p2 d8 q6 @" Y1 y8 E0 P' q& w/ _3 _) V
set customer one-of other turtles-here
* {! \% z4 J' B5 s/ D

( r' Z0 c1 R# s+ k;; set [customer] of customer myself

1 K7 \0 K: h; ?$ B& V3 B  J; l! B
set [trade-record-one] of self item (([who] of customer) - 1)% O1 O* c4 ]: p+ Q7 w& r# U
[trade-record-all]of self! Z  B5 r. g. B  f7 d8 j* r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 n& ~9 t" f9 Y2 p. P8 x) n
# H' g; R% X8 Jset [trade-record-one] of customer item (([who] of self) - 1)
6 p% f: G1 f7 I! R[trade-record-all]of customer

! y. W  T6 r# W8 ^1 g5 X  c5 k9 }+ k: v  \, U/ y" _7 l: A* c9 j
set [trade-record-one-len] of self length [trade-record-one] of self
3 O, q1 y* N: I6 H, ^# e8 D2 f

7 u8 x* }! Z( j( {$ _4 |set trade-record-current( list (timer) (random money-upper-limit))

3 f0 q* k  Y, j2 [
' {; m1 ?3 e1 z6 _8 |; fask self [do-trust]
! _( }+ x3 r4 A6 o;;
先求ij的信任度
) E' |7 P/ v' I# @( O/ z3 N+ |# I% P) Y  J
if ([trust-ok] of self)- O8 t5 u+ g% @2 J7 b
;;
根据ij的信任度来决定是否与j进行交易[
, L% E' ]& Z6 D" r: Y2 @ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 f: H6 C, j9 Z7 k/ q' ^3 I
) m! {2 j% X2 f
[
- z9 A8 J( e1 \* }) h( H5 H
$ N9 I) S: N/ I6 o5 c# h/ [7 }
do-trade
. w6 G9 ]( C+ |2 Y8 g4 \: ~

" ^% m/ L4 J0 Y) |update-credibility-ijl

' X& `  d9 ^2 `/ g" ^
; E2 ^1 Z8 f0 Kupdate-credibility-list+ v% G1 r& e) D4 X
0 E5 c+ G, Z! X9 I7 `

, y" v1 X7 o  `" f; }* u$ mupdate-global-reputation-list
; [( |& O4 u  t" A
. E( k; d! Q/ A; E4 n& S
poll-class

3 b/ v1 f9 W( p9 I& J
$ R: e- m" g: V5 n& @get-color
" x& r% H$ R+ V- S% G
9 R+ F, p; `/ n& }3 \
]]
8 `: s2 L! u6 q  V' A: Q  T
# v# e% w8 F) H# D( n7 T# P;;
如果所得的信任度满足条件,则进行交易
  W% @9 }1 ^1 F$ o3 ^" L6 R( C6 S. F# `' d
[

/ ~# ^0 K* Z  q/ }# \3 E: z) ^! L7 l0 b+ w9 l+ f
rt random 360

2 [  m7 c( T( @# t( _3 z0 K- P
2 P! Z/ {' `  G( _3 ^' |6 j4 cfd 1
0 l- N" X" I" ?3 \
& X" Q6 h6 H1 U% l( C
]

( Z+ Q$ s* g, l4 Z9 J4 U3 Q& x. J0 N8 J
end

6 Y2 J  a9 ~" y, d" d# W. K, }7 N# O# `; X' |% Z3 z
to do-trust 6 M# d; V4 B% z+ _, E. X
set trust-ok False
' }4 p7 L- y5 l( i+ P5 O# d$ P# y- J7 J
. ]- B9 {  O6 R3 A7 O% @
let max-trade-times 0
7 D# T; n. j5 \/ j  y& Z( Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 G# F$ ~5 S% Q; K0 Klet max-trade-money 06 |( _, ^: |$ s7 Y7 b& }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 m0 T9 K9 n7 h: 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))& W8 J& G2 W( M+ _

% S" L) k$ O) W$ D
6 Q# {9 z5 V" x$ M$ t. V( {
get-global-proportion
5 [) R: u, A+ ?( p4 G# Blet trust-value
  O1 f+ \; c' j3 {# klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* @( h+ {- `+ o, _: Y
if(trust-value > trade-trust-value)
& j# s, `% f9 E  A/ q5 q. q[set trust-ok true]
8 ?  E. ]: g: r2 c: aend
; M; y/ R% s/ ^; r) r% k
+ O/ t0 T/ D' q+ L  U# ?to get-global-proportion
5 f- U9 a1 V, ^" T! Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 b$ Q: J" L0 H# c3 _+ L) \
[set global-proportion 0]( W$ `2 @2 O2 m! B9 @6 N
[let i 0
' |# w% N0 I$ Olet sum-money 0
% [# m$ Z6 f8 U. awhile[ i < people]( T  M, u( I( S, g  Q: ~
[* m' W5 K  j! t
if( length (item i" _9 m; M% n: E- d  [( N0 ^7 R& P
[trade-record-all] of customer) > 3 )

3 L* V( o& G2 `3 h[% z# Y8 I5 f5 n* X# ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) X" s, s1 T% m7 @
]
( P; I8 `% ~0 ~. z, ?1 L( m+ h]  e1 @# u. E& p# X8 Y
let j 0
0 H: h8 h7 ?/ r& klet note 0
# j# {2 H3 G0 I" I% `5 Swhile[ j < people]7 a. n$ }: f# U* E: ^
[
$ s3 Q' c/ d' o% M$ u8 m' e' Pif( length (item i
' e3 {# s' o) E7 P$ a/ n- M[trade-record-all] of customer) > 3 )

, c" d0 _9 A* R3 b$ ?4 d  Y- j& v[7 v; D- {# S" p* Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  x* Z( B+ u" c/ t* S& H/ M" b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# Z, K9 u: B7 v6 p" ~' d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) U* C3 r( [4 J( V4 t  Y4 f
]: j/ ]5 N9 V$ T
]3 _7 p1 l1 m6 N4 u
set global-proportion note+ y& D" G" F8 L6 H1 Y, e/ I/ M
]
1 @! g/ [8 y- s; N3 jend& H, i: e/ r- J: m
( X/ u( B% ]6 V2 y/ s. ?) b
to do-trade
6 V$ _+ {. s. p9 y: z;;
这个过程实际上是给双方作出评价的过程* Q  |# X/ y' F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 C* B9 k" b3 Z- t$ Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" @: y' x# H7 e
set trade-record-current lput(timer) trade-record-current  _* ~( e/ \0 V7 n  x7 M
;;
评价时间
8 j5 B3 Y& a. s5 ]  ~ask myself [
8 o; F  X0 W9 ~update-local-reputation
  t& `/ k# t' E9 Q2 O# Rset trade-record-current lput([local-reputation] of myself) trade-record-current
/ g. w/ L  y4 _/ g, x/ ^/ p]
! U# x: Y7 C5 Dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: K. I: [* k+ b! L* J# R# R
;;
将此次交易的记录加入到trade-record-one* H8 J/ E5 o# p9 J# |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 ]% u7 B, y8 K( B2 ]let note (item 2 trade-record-current )  Z; O% P  a. F! G+ @
set trade-record-current4 F* N# y9 Q1 @1 |3 h9 R7 g" j0 i* O
(replace-item 2 trade-record-current (item 3 trade-record-current))

- Z" I% x  O8 {6 Iset trade-record-current$ }' U: q) ^* j/ C6 r7 f9 L
(replace-item 3 trade-record-current note)6 O  P; \% v: i7 R# x

" v+ M* [. {" G% j

  C9 ^% N& Z9 A2 @! n" j$ ~ask customer [
4 t& J! B) a! {9 f& dupdate-local-reputation
' q# g2 Z; }, l4 d! c% J; Bset trade-record-current
+ C0 o8 l  S6 H7 a4 Q6 g0 O- l3 }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 B. M& M; P5 p# R3 Y# m/ [" s
]
, ?4 S; M1 F- M. F  ]7 S6 P
" `- R+ [( C$ n; F

1 b+ f. F4 _: m3 G& R( k# ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: ?( _( E# g# Z, Y( t
0 R: x6 K8 g2 ~  F: x, Q  L; G2 q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( S0 N" p- h  Z;;
将此次交易的记录加入到customertrade-record-all2 D& ~1 p( U# L, k7 P. [
end
" M0 T6 R- h+ l& g& ^$ x0 |! J
' r- f7 l3 P+ ?) K0 T7 ito update-local-reputation2 u* z% r. W+ h8 s$ d& F' D
set [trade-record-one-len] of myself length [trade-record-one] of myself2 W0 Q; I7 |) J5 K4 z  Q

( @1 t7 Z' Y( p/ N6 d  `$ F
0 |7 M0 `9 \$ D/ o3 B# Z  p6 z% u;;if [trade-record-one-len] of myself > 3
1 N! V7 U6 }; Q) T) P
update-neighbor-total
4 W2 k# L2 @* ^# [;;
更新邻居节点的数目,在此进行
' j  `- ~0 }; Y: L" X4 U: klet i 32 h3 A+ ~9 K! r$ i. B" N
let sum-time 0# ?3 S8 O" p3 B( w5 K. F6 d
while[i < [trade-record-one-len] of myself]' I8 s  A- m' l' G: C2 n0 J% _
[  u/ w* P: ]6 x' L1 k# j# p* |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! S) X; |8 c$ w0 b' ^
set i
# e" a& [5 h: a, S( i + 1)

/ Q$ g  R# f! b: n; f( [% F/ N]( _0 i3 ?$ N# O
let j 34 y0 i" _: e% v5 G9 r4 b8 b+ Z
let sum-money 00 Y) a6 f5 \0 e1 u2 x
while[j < [trade-record-one-len] of myself]
% t2 M$ b6 J( r. c4 X[
" ~% @0 m/ b  A9 Pset 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 z2 e) Q0 R$ D& V$ f- e4 Nset j
7 z" L; |% `; E8 [9 R* A% _+ W) _( j + 1)

" e% t5 Q5 R% ]" J; `( J/ g7 _. y! |5 T]
/ F$ r5 O# L& [& A$ g5 Ulet k 3
' o# ~+ a' x% M0 ^; O8 p4 v( T3 Blet power 0
: Y" S" ~! z6 p/ a& K7 {let local 0
8 G( o" v$ |) U8 n, zwhile [k <[trade-record-one-len] of myself]5 U. V( i" |8 n9 n. v! \
[* H2 H; [& b2 y  z! v
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)
; A+ Q) h8 A# I) Y5 iset k (k + 1)
( \' V; v; }, h/ U3 R], Q9 P( y/ e! ?  T' f8 t- n
set [local-reputation] of myself (local)) y  X$ C" I4 p, v
end
, y2 z% [7 o" x& U' E
; ?4 W7 u& C1 p' g! G: s! lto update-neighbor-total
  I1 ^5 ]* E' I4 p$ Y$ y6 t0 H) J' e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 o" d0 Y' x. N* z& T6 T. K" U1 M# J1 p" x8 p  t/ s- }9 {/ A4 f
" h/ F4 y5 x9 p* X3 D! z# h' S* J
end% r) R3 X( x: Z
! C# ^8 L8 u  s/ r+ [, v
to update-credibility-ijl ) q$ }9 x  A/ t, x: u" ?

. A" r  T3 o9 r9 y4 l;;
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。1 h  y8 k: s4 u! M0 T& K6 w0 B8 d
let l 0: ~" S/ j9 h. Q6 y( \+ j
while[ l < people ]
4 g& ~. N- E+ q+ d! O;;
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) T& n2 `: ^) b6 ~
[
1 x4 U* }2 P1 P, V6 klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 D; f: y/ K& Y8 I2 t
if (trade-record-one-j-l-len > 3)
5 a. z; N/ C; W$ c[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# H# C5 i6 r& q& b! C) X( F
let i 3! K; e1 ]" L, I/ A2 ?
let sum-time 0( f: A1 j5 a3 f! j9 [
while[i < trade-record-one-len]
, {) m% g0 Y$ [. F, g, C[! x2 |8 i+ ]8 Z) `! H5 N. ]/ ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 A; y! z7 O+ E1 C( Nset i
3 O5 U( _- o& l0 S2 R( i + 1)
: C/ K: Y* V, N9 b0 c" }* R
]' \0 \" K; o8 y* D2 B
let credibility-i-j-l 0& ~4 ?1 g5 a+ C: {. h' T0 d9 V2 D5 E
;;i
评价(jjl的评价)
* w* Z0 c4 Y# \/ Clet j 3/ y) u0 v: V+ ^& x" W4 f
let k 4
% R4 G, p1 Y- ?! ^5 X7 u) i0 Q, bwhile[j < trade-record-one-len]' Z2 X) c6 l- H  a$ E8 d/ Q
[
" d/ ^$ d  F8 owhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
1 d+ S, z' F4 P7 {& Gset 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)
) q' a* W9 |7 ]& ?  e6 Sset j
& x& _6 J0 R$ r2 b( j + 1)
  f4 a4 D1 c! N* `
]
9 N2 y' ?* T0 r" ^$ u' B. hset [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 ))
+ r4 x$ G. `3 v3 B9 @6 U8 z5 G% z
' k* R  \# f1 M3 X4 t3 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 s; }! j, q% J4 U5 ?) q8 i
;;
及时更新il的评价质量的评价
& q* Z# }! u' |0 W- y$ Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 r0 ^5 H2 _) v. {/ |" L* F0 z" f- Z
set l (l + 1)
; N4 ?3 c0 `- u]/ D: o' s9 J8 f  N5 F
end( x( o& Q" T" [, H# v6 B8 \' x5 s
0 D# q5 u7 I* r" T% ^0 _
to update-credibility-list
: x$ v. Q4 v- o, W, i+ p4 plet i 0; e9 S: g' V0 t7 H  S
while[i < people]0 P: d; R5 Q8 t9 v# ~5 W
[* Y8 b7 _: y" I% {) y: l; ]" P
let j 0- M' y' I+ u1 D2 [% e/ o0 ]: M
let note 0
$ c3 A1 z1 U( |* N! Wlet k 0' z' T5 V% f" y$ Q
;;
计作出过评价的邻居节点的数目
" J) F" @. C# [- V. ^while[j < people]
- H" e2 x5 I  `; ^3 ?/ o" D' Z[
5 N, Z& J$ c' }7 H' {5 `# Dif (item j( [credibility] of turtle (i + 1)) != -1)! J$ w) ^5 o! r4 h# ], \
;;
判断是否给本turtle的评价质量做出过评价的节点5 }# }% r5 t: U! o
[set note (note + item j ([credibility]of turtle (i + 1)))+ _8 q! N) Q( _# h$ G& {$ L
;;*(exp (-(people - 2)))/(people - 2))]

$ A# L/ p5 d: \% l  t7 o9 rset k (k + 1)
0 O. R$ a  N- u5 Z# }/ j]
8 U* n6 G3 ?1 D1 j" L* Bset j (j + 1)4 x3 I5 o# Y& p& }& M
]
) ?* O. ^  X. U% N, I: Kset note (note *(exp (- (1 / k)))/ k)6 k% J$ p8 x/ c0 F
set credibility-list (replace-item i credibility-list note), y$ \/ D0 X) K; ^
set i (i + 1)
; ^* ^8 c5 A  l: q" u, X0 y, a]0 Q6 q0 a) A  H4 V$ m2 M
end
) k: S' W  v) {. o8 E; c
: X' ]1 E! k! o. M) a& L; uto update-global-reputation-list
- e- [8 @6 g  ]3 g# M3 clet j 0
* ^& _5 j" I7 U7 ~4 Y/ J5 I0 @3 t; Pwhile[j < people]2 o4 o, A: x4 ^  F" U6 J
[$ ~& h( k* G# @$ q
let new 0& U: D/ k7 a% B5 G, `' @" ^' K
;;
暂存新的一个全局声誉# w4 B4 `9 ~$ w9 u, {0 a1 y5 {7 ^
let i 0
3 D! y! R" D8 ilet sum-money 09 Q. Y" A# Z" ~8 o7 o" _$ R, X
let credibility-money 03 l0 p- g: k- T+ h. y" `
while [i < people]8 U( _; {% Z& ^0 N
[% f- o) b" h1 P) Q! ~! G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 @+ i3 }8 g, }! Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 t7 y" b0 C1 f& o+ l! t4 W0 z
set i (i + 1)
0 Y1 r- l* s6 T8 w]+ o% q4 F; U! q/ \2 q
let k 05 I& q: Y8 A. o7 _" G1 G) _: Z
let new1 0
5 A6 |* Q6 ~! y' j7 l) L. fwhile [k < people]
1 `/ y/ n7 `6 U) v; [7 z- g[% S- R) B+ Q7 K& {3 A: J6 P
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)% e% j6 T: q2 x# u5 s
set k (k + 1)! P2 x' B, g4 r0 [
]# i$ M5 Q; M* H% A% i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % [: Y! m0 n4 R) S9 ]$ H
set global-reputation-list (replace-item j global-reputation-list new)
: E6 l# B0 K) f+ I! q: Fset j (j + 1)( V. k6 ?* `6 ?, R! v
]
' }; z5 K- Z1 Gend
2 O5 G) v2 s! L5 K: a, }5 d; R& S$ ^7 f# y

" |( L& d; e/ U& q" ^4 |
- h0 V8 E5 L. a# K, Ito get-color( }/ B! k3 y/ T! B8 x; H( n& j
/ [2 N' H  z4 [9 g/ ]
set color blue
# E- L5 \. N' L( t. q
end
6 W* X5 N: B; b9 W4 Q
  ?- P" e2 o5 E7 u' ato poll-class2 ]& M5 N& y6 v+ C3 A+ z4 s) `( n
end' I5 M- x; @9 D6 R

) i# _* Y. S# X- eto setup-plot1# w- `, u# c1 e- T
* Z% G% x/ g/ ?& w
set-current-plot "Trends-of-Local-reputation"

: B2 |! s+ s* s% r5 r
5 T5 p! R( E. ]7 I+ Tset-plot-x-range 0 xmax

7 C: K# U/ I, K7 q: R. T
$ r4 O+ E; K7 j) H' Eset-plot-y-range 0.0 ymax

9 k& f- a1 J+ S! Rend
* `4 o, \  Q6 ?) c8 c! N( g* Z& R7 g+ m4 V0 J
to setup-plot2/ M! |, R& W* G5 l
  D- m) T+ {' M! c: h" b8 s
set-current-plot "Trends-of-global-reputation"

2 S; S% H0 h, n  y0 r* C7 E- p9 F8 a" @( ]' i# Y0 o
set-plot-x-range 0 xmax

7 [( ~2 j. }$ r. t( \7 z& ^# O
( ~- e3 B. s5 T8 x# Pset-plot-y-range 0.0 ymax
+ \. u* n! J- q& i  f. q, g
end
, a. z7 l" l9 `. p  _
! O6 f" n5 O& Z" sto setup-plot3( T2 B- V: V# i% h0 S
% e7 @: @" p" @. c9 _4 a5 x5 r4 E
set-current-plot "Trends-of-credibility"

1 ^+ {/ f; Q( F4 a& D
4 Q. w( z+ n2 H5 X6 b# b% }/ bset-plot-x-range 0 xmax
& {0 i2 b! p- |( |7 J

: a" v9 ]: Y1 ?2 Sset-plot-y-range 0.0 ymax

5 _0 d2 V0 j+ s) R' Hend. f" L8 b7 H1 r* W. i& m
$ |5 e( U8 B* o7 D" P/ {
to do-plots. M2 Q2 i( Y$ d; C3 O+ b+ X
set-current-plot "Trends-of-Local-reputation"9 l8 O% z! g  R# }# [  z8 b; H& H
set-current-plot-pen "Honest service"
) V$ U& V4 n0 jend$ R$ c* y3 c: U- d- P
7 ~( B0 U9 I* S) B! X
[ 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.
/ l. W: V( Q, e* ?% R
& ~+ L- t: P+ l; g* V( A. I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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