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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:6 X" Q8 d4 k( `: r9 W# ^- z
to do-business
. H* h0 @6 H  k7 ^7 d rt random 360& f( C) h! ]) l9 k5 L
fd 1: T8 X, b0 B3 d0 z- T
ifelse(other turtles-here != nobody)[5 `6 p$ G* P. w. A* Y$ t0 B! u
   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.$ P) M# B3 u; b1 ]: g' a! n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # W) G4 `0 F2 r! ?+ U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: o1 C* y. x9 z- x/ a   set [trade-record-one-len] of self length [trade-record-one] of self4 p0 I9 s0 }. l- e9 G& i
   set trade-record-current( list (timer) (random money-upper-limit))
7 E& W# b( r8 v4 K7 y
: X; m+ o- ]8 ]6 V: V问题的提示如下:
, t# L' Z: g1 t4 e& ^
4 e/ O+ D8 }  H+ T! d9 Xerror while turtle 50 running OF in procedure DO-BUSINESS$ H' U+ E( _2 h" S: m' B7 |, Q
  called by procedure GO. x& L+ o7 |, s" ]* g
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 _4 S: f& R) _" n% m
(halted running of go)
  Q8 b1 G5 D+ X' x2 {8 J& M2 q0 ]: ~+ \! p% P5 ?' o, g3 g
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
( k6 s- Y4 K4 s* l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" D" S. N& {* m! R- b2 M7 Z
globals[
: D, j$ k* ~' d& }0 L$ yxmax
  N! l7 c& \2 h) @  G  qymax+ V  S( j0 ~* e
global-reputation-list( N; U1 Q8 b9 K1 G4 x+ {& M
8 b, L' T3 u1 r& D: b( c
;;
每一个turtle的全局声誉都存在此LIST
3 C& y8 K1 W4 a7 l& R( j: Acredibility-list9 d& p$ X& h4 ?: _
;;
每一个turtle的评价可信度4 A* b+ h' w0 n6 X' Z+ j* C2 g
honest-service' W4 v. {& J# k5 P: k
unhonest-service% o# X7 d  Y( i+ G7 T' L4 |
oscillation" U; n3 Q  P8 M/ b
rand-dynamic
6 ~5 Y7 k) B" z! |' h( O]1 {1 D0 f: I0 l, j+ {( i3 }9 v
+ \; @  _# Q5 f* S  P
turtles-own[
$ a: k% u% D3 W  g0 G8 |trade-record-all
2 y: h: Q5 ~- D5 t! g;;a list of lists,
trade-record-one组成3 o6 M0 x. P' ?. L. r
trade-record-one
3 ~8 i$ C. l5 \2 C* ^1 \. `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 I  t7 l+ W# |5 c6 F" n
$ C! a8 g9 z0 I% ?
;;[
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]]
/ ~2 \# f7 @; ?( j# ttrade-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]! N% S# C/ G- Z5 }2 a" t
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list6 K- F3 d9 D% B: Y/ e% O. o
neighbor-total
9 p% B# R. [( C. m' c. D& T;;
记录该turtle的邻居节点的数目
& p, P* h: X9 T! E: H+ }; xtrade-time
+ m: L% q3 I7 t  v% [;;
当前发生交易的turtle的交易时间( m) ?/ q; H, w2 u+ e+ d
appraise-give+ q2 [4 _$ D4 ^$ x
;;
当前发生交易时给出的评价
8 H# K* r3 s% xappraise-receive$ s1 Y0 g9 Q  N4 R9 P; J
;;
当前发生交易时收到的评价2 e- l9 Q( I# F5 P
appraise-time
4 [3 P; F8 ]4 @;;
当前发生交易时的评价时间& V0 I6 s& l) @  J/ v4 s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; p* s$ w) z: N1 j) ]5 [" `trade-times-total
# K6 }* Z: p$ m, a1 L7 D* e# J* w;;
与当前turtle的交易总次数
5 U/ [7 ~3 G, I* A3 htrade-money-total* ?( ^3 Q% z. n+ {" ^
;;
与当前turtle的交易总金额
1 v3 s; M& m& u7 Olocal-reputation
( [4 [4 P4 v4 kglobal-reputation
& F9 N: B+ f( \% Gcredibility
1 G" J0 S4 l* {. h* [! w7 {( l;;
评价可信度,每次交易后都需要更新- R$ p6 m0 U* _' d
credibility-all+ e8 x3 r/ J% h$ r
;;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! T# d/ Y2 N. o

: `& Z+ {$ c" P$ K2 t6 r0 P5 `  a;;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/ ^% u+ e6 f! h1 m' i) a2 v
credibility-one* E5 [3 K& q! M+ _9 @$ B
;;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  Y5 c. x4 O" y( l. m1 y5 ]
global-proportion
" b) U, x# X% }customer9 z* ^& P2 H( q3 D
customer-no
9 u8 c; _; c: f" `0 D% t! e5 _trust-ok* v* I) p7 D0 N6 @- X% b
trade-record-one-len;;trade-record-one的长度+ b8 u& v, A! a
]2 X4 L: B" c# _5 l5 J1 l" D
  a; O  z% B' O+ p. J9 z# O
;;setup procedure
6 g0 U6 F0 U( S, w( [
6 t- k+ \7 \- D/ ~! jto setup, Q: Q. D9 A6 j' J# t$ G4 g1 s
* I! j, O/ ~! }, d9 J
ca
; V% g( `! T7 F: n

+ A7 x" q/ W3 D7 v% p1 Tinitialize-settings
0 o% o4 G5 B3 E8 D% O0 X, a5 L

5 ?5 z+ P6 `1 Ucrt people [setup-turtles]

3 q7 [+ H( }/ t" y  Q+ O
) R# w" G  f* |, M5 P, Q; freset-timer

% B/ F  p1 E% O. a- {5 q3 m  O1 M% [6 @* A, x3 B5 o
poll-class
7 M$ E7 V/ @& _) _" M+ G1 j+ i

! \* ~* h9 O* X) b, Ssetup-plots

& Y; {0 O& H7 w8 S3 g* \
1 P2 O* q0 a; X! k7 ?7 Z+ Cdo-plots
5 _$ B3 S& y/ R/ K6 T
end& L8 B: i' K, r6 F0 P
8 w1 d# H# h, m
to initialize-settings& t& L7 P, ^. q9 x# h/ p) ?, E  o
9 x; P: w% J/ V# n
set global-reputation-list []
! P1 d% @% P6 c0 P! x8 Z

3 {2 D! b2 V! ~6 w$ Vset credibility-list n-values people [0.5]
- G! h9 u3 D% e' J
+ u" d7 D3 i9 D* K
set honest-service 0

" B/ B$ ~* g/ L3 Q7 }" m& a0 V/ M6 Z/ g2 `$ g& s6 B6 \1 D/ w
set unhonest-service 0
& o9 `& u; t  o' h
4 F1 l, e" ~9 k* [$ I$ V
set oscillation 0

9 I) b$ M0 b  ~* F; \
7 S9 y6 {8 w/ \* n; Zset rand-dynamic 0
/ m) J3 P: T# H; L5 K& i
end3 e8 N$ X5 v: Q' r7 I
# i" d4 c9 X- B
to setup-turtles
7 U  ]* W0 @* u% J! Q6 _set shape "person"# c( Q3 Z4 z6 {
setxy random-xcor random-ycor' _$ f( s3 t5 @' ~! {) x" h& r; G
set trade-record-one []
$ R+ \: Z4 c+ J' i( Q/ d6 X+ H" d

" |$ A* T4 x  F& c. }* Rset trade-record-all n-values people [(list (? + 1) 0 0)]
% e8 g% E# p  T: p8 N" Q) ?+ A
' `6 p/ c5 K9 r0 N$ k  u/ k9 C
set trade-record-current []- [; I/ e1 V* [) |6 d  x
set credibility-receive []4 V8 F$ x6 a2 b! o( w0 p6 T
set local-reputation 0.53 m: l# {1 a+ i& |* b, n/ ?
set neighbor-total 0# [# _( n2 h8 O) Y* s1 q
set trade-times-total 0: m9 c& |, h- e* w7 _
set trade-money-total 0
, M* [  b6 O$ pset customer nobody
' ]) e: K+ K4 u  b' H+ y# W; a9 Sset credibility-all n-values people [creat-credibility]! h0 @5 p' n0 K
set credibility n-values people [-1]
8 I  F, N* k8 fget-color
1 {( e9 ?5 J9 a+ T" Q- L& Z: m# {

2 Y8 M( q; E) Cend- g& z! @5 x2 C0 u" o4 r
8 `5 [* q# _- F- h+ C3 R
to-report creat-credibility$ x5 \* ^$ G2 g5 \7 D
report n-values people [0.5]; k. S' l7 i( r
end
: y5 h$ p, W& z$ y/ ^% v( r$ b/ F; s* l. {: h
to setup-plots) h) d% i5 j0 k- h7 e! P
& F3 E# `. S3 P) ^
set xmax 30
1 n. B" k. ?: e$ D

7 D: N" O0 ^; z. Xset ymax 1.0

" J  M- w8 h& w( q
. y7 F2 ^8 n% g- `, ]( w. q: t$ [clear-all-plots

  \( j% l1 p3 H
' p! C( j  O9 J" ~. `4 \. esetup-plot1

# o0 h% E9 L- X5 ]. G. H
* @9 |$ w8 {3 M, ?  P9 xsetup-plot2
" n  Y8 M3 p3 F* V3 C
3 r" Y. ~2 _9 S  d. _$ i
setup-plot3
' ]1 `. L7 L3 A- D  ?
end* j0 n( D+ g9 b) G

& Q6 j& e. ^2 f) v) P* R* u6 ];;run time procedures
: t6 k6 P0 Z; C! u& Z* o! {! Y
8 E/ {  ?% n4 X1 }$ i% c+ tto go
- c4 w- d& A' ~9 A2 r5 u2 {* w% A( y
ask turtles [do-business]

) f; [& i8 F! ^! O6 ~end
! \+ n, O, N" h& U! ~" k4 c
; d" K. j  B0 h6 ?, V! sto do-business
* r/ [7 l* c; P  x4 Y5 l" v

/ T( o  ]& O% t2 d" L$ ]$ i9 @" x$ o+ C+ F( B% O+ p
rt random 360
# _/ n6 a4 V# {- M2 D6 \4 B6 r
; Q7 ~9 R3 Q, m7 D# k1 U! b
fd 1

% a  S7 o! D+ ~; j2 E; r) x+ n7 v- W, a& u% L. d
ifelse(other turtles-here != nobody)[

9 {9 P7 f3 y" z& I  b$ s- \" {) A/ u; J: u. Y' R4 [( H7 f' `
set customer one-of other turtles-here

1 p; K( d6 L6 F+ P& S- t* y) K7 M3 m, c; z) F6 G# f! d/ O8 Q6 G
;; set [customer] of customer myself
3 R" t9 M4 C# z) D/ K
' j, G6 t7 l  T! f5 d  S
set [trade-record-one] of self item (([who] of customer) - 1)+ f) {. Y/ u3 d8 t' J1 o5 ?( q
[trade-record-all]of self
, r3 B2 N. a* E' W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* E  i! r. |3 ]* g  Y6 d

; `7 d) s2 ~5 |# `6 v; k2 pset [trade-record-one] of customer item (([who] of self) - 1)4 H) u$ Z7 A; G8 x8 ?
[trade-record-all]of customer

) ^; L' T6 I5 |+ ~  r
. V9 \7 `$ P: w' Hset [trade-record-one-len] of self length [trade-record-one] of self

* L8 W  d7 t9 A. n8 s% W5 v) n9 a# A  E: f. G8 {/ E# K( [/ D; w
set trade-record-current( list (timer) (random money-upper-limit))
3 {& U2 j: g6 n* w
4 o; Z! D/ }1 T4 _1 L
ask self [do-trust]
* h1 j/ [* y; H6 [  e# };;
先求ij的信任度5 A9 `' X' b! C$ [- i8 S

2 g0 ^% L/ u! [; B# c  x% uif ([trust-ok] of self)
2 r: D( x+ R2 U3 f& R: N;;
根据ij的信任度来决定是否与j进行交易[
2 Z8 r$ z) ~& R7 s* E' Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  {0 U7 ]4 x3 k* `9 j
9 x6 P6 A, S$ F$ l
[

9 ^  f3 Z6 _, N. M8 ^& x- ?
; c% ^) E% s( c8 D3 t; `- Q; ido-trade

6 E# Q, @2 T6 M5 F
0 D, K( z9 I- o/ A3 Supdate-credibility-ijl

: |7 t4 I* P; {; c$ t) H* _/ f
6 O' d, R$ l# T5 _$ x* D, Mupdate-credibility-list
7 |% @) h# q% v; D
# l$ B1 [$ S! L$ d0 z  b
8 K0 K) W2 t* {/ [2 a
update-global-reputation-list

6 Z: }" e7 R3 N. R1 Q" ~' H! Q, E# f) H/ r1 {  Z+ a. M
poll-class

' Q% ^% g" y' |. j: D
3 r- r6 I$ `. u6 }get-color
$ g$ W( `- W* r& y# x2 O9 `4 f

" a1 t6 Z. r+ c]]
$ x% V* z& F7 i: B" Y2 q& E- N" ~, V# P
;;
如果所得的信任度满足条件,则进行交易
; V/ ]2 r% C7 C- w0 Y
8 y8 W6 i2 m. e7 b* w$ L4 V  W0 J4 _[
1 R2 B6 j8 r, Z: R7 I. P, x
- s) c# D* V7 N! r& b" N# Q8 P
rt random 360
  ^/ k) [* }7 ]& Z  R& N

0 z! ]3 |3 X$ Z+ W: G: k$ ?* V: ^fd 1
) k5 H* Y$ ^" |0 j7 K* y9 x; o
7 s/ J2 A# Z: C
]
( h3 A1 c& D) q8 |5 ?

$ j! k) F2 N2 Y2 zend
0 Q5 ?; `+ c  x$ Y( t* h8 ^+ c

! P- R4 H- `1 L3 C3 x( b, Ato do-trust
8 t: X6 Y; f* ~; @: kset trust-ok False
& |, c- P) i) f) T4 W  C3 b6 p! H, R( [4 ^& K" C3 B
5 ~4 O3 l* a9 Q  q! p( \
let max-trade-times 0
; [( I& L; h1 z& oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! F' T* c# h0 P
let max-trade-money 0$ P: W" E/ @) J. p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& y7 Q; S5 Y) z3 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  z2 j7 S& |+ {% s: B* f( p. B4 x$ f' P6 S/ S( u( m9 x* E7 N

$ V& |  C' U# W9 b( [" \) K1 tget-global-proportion9 R- \* {' M: A1 R
let trust-value' o+ @* H7 R. b- |
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)
" a2 Y# x4 [8 u
if(trust-value > trade-trust-value)8 \% N6 s# _: M8 Q6 d; [) I- ]$ D
[set trust-ok true]
7 ^. X3 L1 J# x  M: {  Q' Iend) D* b  q8 N, A0 a6 [8 ]: l) F

: d; M2 d( ^7 D9 V4 k7 @to get-global-proportion
5 e1 T; D5 \( _) Z* g8 n0 Y. bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 [1 k# K- o9 m+ P5 _[set global-proportion 0]: f# F0 w3 X# L, ^6 ^0 ^
[let i 06 o2 d5 W1 [' g3 _6 y
let sum-money 0
/ ~; H; E# }+ D1 W) M" A4 u( Nwhile[ i < people]
* m* @* _6 f" e; n- @- M% i[
# G* q7 R7 u4 B4 Rif( length (item i
- t8 z) N9 l4 s  U[trade-record-all] of customer) > 3 )

# D" M8 n; W5 |1 _' u' X* C$ d' Y/ Z[* U3 W! c6 b$ J$ }# l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  o' e7 Q% }- q& [1 n) T4 B]6 L7 ~* G% }" H; v  c0 x( R+ b& S
]6 l3 E. N* Y5 V( x2 ]0 s0 ?2 q
let j 0
: v: |+ [* d9 R9 K7 Z/ Ylet note 0! I: z1 \, ?: k. O( G0 }
while[ j < people]/ K7 J) A$ r, F
[
/ n0 R: W. M& wif( length (item i
' ]% r) l9 \  G[trade-record-all] of customer) > 3 )
# N. D) C+ `' `1 b" I
[0 K: R" W% @; O. c5 p3 x8 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), b# A! [$ ]* N0 W; P' C+ b* q& v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& g4 G) I$ ^. N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 ^+ `) ^: Y6 g( I7 G, }0 n
]
6 k- Y8 J' i- [- a! Q- s]$ K& Q2 p1 v, |" h6 ?
set global-proportion note+ @" `$ j" _4 |  |; b- @* B
]
: Y1 i" |3 n7 a1 J; h# Kend. R* \" o' l9 [2 J/ r

( e5 S+ Z, ?3 S  J9 Pto do-trade" }' Z. O# X( D4 i
;;
这个过程实际上是给双方作出评价的过程' u: T% u2 a- R1 j! ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- g. A& s+ O( R0 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 X0 [/ I. I& A1 k
set trade-record-current lput(timer) trade-record-current
9 F& t; W$ S2 o& k;;
评价时间- ~* ?( w0 r0 a
ask myself [7 Y1 g; v; i2 b& S' ^3 v/ w9 N
update-local-reputation$ |( |; L: M2 N% e# ~* z0 e5 ?
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 D7 l& J% v0 M6 [3 G]5 \+ G% H$ g( ~/ J& |! t( I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# [) h( f: ?+ x  |
;;
将此次交易的记录加入到trade-record-one0 y* h8 A# s' Y+ p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  t, {+ e0 H+ `* U! Jlet note (item 2 trade-record-current )
! [" r2 |% m" F; _. u- pset trade-record-current
0 N3 k& O! A2 u' b6 L" U7 ^(replace-item 2 trade-record-current (item 3 trade-record-current))
$ V( i( |$ L& K6 i- r* [9 w
set trade-record-current* d. Z7 b# }5 Q5 ?8 }7 a
(replace-item 3 trade-record-current note)1 ?* @$ t+ p* y1 p

) t( u2 C# z! i" e

+ |9 E0 N/ ]) d+ k1 q! z5 S# task customer [) E% X6 D/ C0 ]- y* B" ]
update-local-reputation% o) q3 j2 l3 ^" {
set trade-record-current
$ m) h: p* @! U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) H* e) ^" ~+ C' f
]# M) K+ C5 d5 v$ @1 W8 u

) b! J: ]% v4 |1 [
. L$ x1 @) c) v4 ~. D* b! {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  n. @! N1 |- X0 L# r9 n

# Y  j3 _; b: j6 M$ yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. M+ _; B! c! T: k3 x;;
将此次交易的记录加入到customertrade-record-all
* Z2 @. z; z- `" fend
- R. n6 @) s+ N9 S: a+ b' s
! d) ?: i! D6 a% p8 |7 t$ Uto update-local-reputation0 T: j7 }0 @$ M( z
set [trade-record-one-len] of myself length [trade-record-one] of myself* d2 ?, k! I3 k
& W( }& V8 C$ X9 b* n. x
. a8 u& t) d. K- h, c/ K% V
;;if [trade-record-one-len] of myself > 3

& W& {4 L" {& i( s5 A0 ?9 Jupdate-neighbor-total8 S# S& s4 _* |9 l4 Z: d# x
;;
更新邻居节点的数目,在此进行
: K6 E! }9 ~6 s8 i' jlet i 3
& k, E1 j% V! w! u7 @let sum-time 0
1 b( `5 O, c$ w% g2 j. n4 N' ~# H8 bwhile[i < [trade-record-one-len] of myself]9 s- H# u: w1 J4 c/ Y" I3 [7 c
[
/ r" X4 B) r5 |  z& f! Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 b! f5 W( u5 l: F
set i
: b2 C! v7 |7 i1 i2 p1 {( i + 1)

8 H  ]( e1 a  e, X]
2 q! f; X* s' z  Y4 u# ]  x7 Ylet j 3
% T) w% v% P: B% B9 Q/ D$ L! llet sum-money 0$ n. }9 W* h4 e  o: `
while[j < [trade-record-one-len] of myself]' X3 v( N# c) S' ^+ p4 h
[$ P8 X- C( |8 L9 O
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)
6 U' J. W$ S+ I3 r# @set j1 A" Y. ?: j( o1 a' \  z
( j + 1)

' m1 A/ f: i* u! \6 s]
3 ^* M+ B$ B" f" Q! Z* Elet k 3
& U1 ?! `' e) O. ~4 ulet power 06 m3 i+ E9 C5 d# Y( y$ u; x2 E
let local 0  ]% q' g1 E# s, D; @$ c
while [k <[trade-record-one-len] of myself]- H- s8 t. c5 w7 V% B
[" ~. U4 Y  A! K3 r: G9 r+ P+ q
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)
# I4 k9 u& W4 b1 z# U8 _2 Iset k (k + 1)
# n. a3 j# M0 K. B. ^9 \# ?8 K]/ V( V0 |: L! H" z0 R8 r
set [local-reputation] of myself (local)) G& D! i6 z& j
end3 o# v8 b+ z" s  C

# o) x& b' i1 S6 ?to update-neighbor-total
; r5 X+ n. }, J5 F) @9 K- J. s( O; l0 @, N) `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 L6 w3 h: O9 x
9 d3 r9 S5 [* @/ c8 t- T9 X% l- L

+ U8 Y; l! U( A! j0 `end0 C- g7 c: a0 y# t$ U: s

* d- B( C' E! F* Tto update-credibility-ijl 6 g* |: O1 I, M

9 }" x1 N' y2 s;;
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。) ?. l# n: Q$ R" @
let l 0& K4 I  h9 N7 c6 Z. u! O
while[ l < people ], B0 l5 K2 [! a; q! G
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价* l. f0 |' C9 M8 ^% z/ x" X0 O' B$ G
[
4 ^9 ]6 [+ @1 g! l! ]' glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 g: s4 L# P* L
if (trade-record-one-j-l-len > 3), X" U* C9 D5 ~: n! K/ x; U5 x
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one6 N+ H/ z9 b. S1 T5 |
let i 3' S: [! G; R/ |2 c  Q0 t& R$ _3 n
let sum-time 0
' q; p8 o3 B) R7 j8 F* Awhile[i < trade-record-one-len]
6 D: _% _' n4 c' ]& U4 o2 @/ j[
$ |3 l7 z1 x  A5 Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 m+ h# E# Y3 n, aset i
9 y- P4 N2 t8 E$ S+ S6 a( i + 1)

. U6 w8 w; R" N: g& f) d/ a1 H]4 l! I0 c7 ^0 b" s1 h& z
let credibility-i-j-l 0' h  ~9 S3 m9 s$ f8 b
;;i
评价(jjl的评价)
; L. @8 g. U2 i1 Alet j 3
, l) @% R- \- y7 @$ Hlet k 4
" p; l7 ]- P2 }9 T) k% Ewhile[j < trade-record-one-len]
) ?5 y6 c. c5 z( ^% ^- X& i- O[
) L8 ^: Q+ ?& s# x: Z: K* i, T( T6 Vwhile [((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
( k% T5 h0 B* b2 Uset 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)
* S/ a$ H4 _4 o- [+ oset j+ H2 X* W& Y  g- \+ ]- x
( j + 1)

7 @! c' K2 m0 `]& t# I' Q, X3 [# D/ }# A
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 ))
/ F, a. X: E" K
+ d) U  X$ u0 T  C

! l# D4 h' z( Z. [+ I% W' Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( `/ W6 J' v+ e, K7 w- T;;
及时更新il的评价质量的评价
( J7 R1 C6 [6 C5 b5 @* oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 ]) p$ ]6 ~) U0 K# [
set l (l + 1)
+ q: a/ I1 R$ \$ j/ F2 W( |]
, s, {3 d! l) T% ?end
4 B6 W! J2 H+ T/ K4 q* \; a
! g" y) Y4 l( p" v1 G$ Yto update-credibility-list! C6 g. z0 t/ o/ y9 H- R$ D
let i 0' s. e6 Y# Y9 g/ t/ ^
while[i < people]' a) ~/ e5 Z9 K  W& _+ X
[
- o- Z9 C8 ?1 W5 Q* b* M3 nlet j 0- M3 [7 z! @. w
let note 00 y( g) C! l/ d
let k 09 a% u0 a8 I+ P( d/ [8 v( }# j4 b
;;
计作出过评价的邻居节点的数目
; `+ ^1 `: V5 E0 k! a. Qwhile[j < people]
) I- c6 a/ T: g: u  M+ W! L[" F( Q! A3 `, u+ M
if (item j( [credibility] of turtle (i + 1)) != -1), [" u! o0 B; @4 I% b8 b' R- ~4 z
;;
判断是否给本turtle的评价质量做出过评价的节点
: \" n. y( {/ K4 F8 n8 [2 e2 u[set note (note + item j ([credibility]of turtle (i + 1))). U: f4 ~/ H) t: x0 a
;;*(exp (-(people - 2)))/(people - 2))]

0 D! }; ]' A" C+ }& U: _7 [- bset k (k + 1)
; }, [- P0 i! a/ B; d' d( x]6 k) h8 B- F: `5 w
set j (j + 1)
- c6 r) c& q' w]/ f8 c* b' l6 _" F4 @  |
set note (note *(exp (- (1 / k)))/ k)  k7 T- {( A. |. Q" l8 _8 X  \
set credibility-list (replace-item i credibility-list note)
/ g9 i2 i% V* h0 N1 u6 i4 wset i (i + 1)$ G6 B/ q4 o: W; q" v% F
]- g1 K: d7 c/ q" }* q; @
end
/ `# e# R& C: h1 ~( D2 I5 V3 e
1 e' W6 F% h  Mto update-global-reputation-list3 u1 ]' W) G. {
let j 0
4 j) c* q& t( [8 jwhile[j < people]( d! b! ]0 g; {8 z
[! O% P' Z/ V8 t, |
let new 0
) F* I8 S4 B. Z4 t0 N6 A;;
暂存新的一个全局声誉
& O( L+ Q, {$ b" O& tlet i 0# \- H3 o3 q) o7 o) d; }" r( b
let sum-money 0
7 f+ k: a$ @3 L& t* g0 _5 e& C/ [' mlet credibility-money 0* X8 f0 e, i& _4 V
while [i < people], m! c0 d0 i6 \  r* Q6 c
[
- h+ s  N+ h+ U3 i3 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: \  k# v2 G& Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" s$ c2 V, G  l0 c) O
set i (i + 1)2 _- r, G& K( }
]) s6 V7 |/ L; p: D2 g
let k 07 M* x) D0 z: s: s3 O
let new1 0
& ^* ?8 W, U3 P5 A2 @3 R7 Uwhile [k < people]
6 V$ k) t+ l& ~1 B5 D4 N$ S+ e  T[, G3 F: t7 T6 U& J% D
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)( [/ w4 z6 Z- R# u0 i
set k (k + 1)8 t5 g- R% N! |( G( T) Y
]$ i  s/ o: P2 x, O. [8 W' r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ g) B& @; r' l6 Xset global-reputation-list (replace-item j global-reputation-list new)
% c( j: s% c- K- v! q4 }set j (j + 1)0 n  p5 d, s9 {
]
! B- e3 i* T% ?' F9 C1 _. Iend
3 m9 i5 d/ W5 Z: T
# I# M  z) v2 R' {' D! x  C
/ }3 c9 y1 n2 |% f( d2 O  ?5 X1 d- f5 y/ S
to get-color+ ]% L, {; {- b9 `! ~$ q

/ t7 C4 M4 Z; X& U! h9 y* j3 Jset color blue

, d5 `# H8 {8 I  F/ Nend- _* ~/ I3 C  |
( T- X: q3 D5 A* o
to poll-class' }4 \+ I1 I0 V" D9 d" b
end
5 x( n4 P5 t5 @( `8 [& o! Z  h( r8 M+ W8 V2 N) b
to setup-plot1
" t3 o: }$ N1 ~1 ?& t9 s6 ^( O% h; h3 F( j
set-current-plot "Trends-of-Local-reputation"
7 `" N' l* q/ |: E( M" x9 f

8 N3 x9 O8 X/ \& U3 Uset-plot-x-range 0 xmax

9 l8 _, `* l4 N2 L) s' w' i
# W1 `+ g/ X, f  V/ j6 Vset-plot-y-range 0.0 ymax
8 a% A( }* w3 ?0 n
end  F3 e: ~2 w3 n7 M3 ]) v

: T( u5 X1 i/ n: m/ w" Rto setup-plot2
/ v4 }! e% q7 g9 `) Q0 u7 s
- d* c' q$ f8 b1 cset-current-plot "Trends-of-global-reputation"

0 H% g8 n/ B4 m; {* F- L' r4 ]5 R
& [$ s0 G/ k5 zset-plot-x-range 0 xmax
" p; |5 s+ w$ r
1 e2 w, g0 d1 _* j/ `
set-plot-y-range 0.0 ymax
8 c3 b- U% G" z5 y, ?. M( U. w4 {
end
* u) Y3 W# l9 t7 i8 V9 O( o/ G' M" Z. P! e
to setup-plot3
6 q. D: P3 B5 b+ \- \! i" S) y, S* i1 ?3 o
set-current-plot "Trends-of-credibility"

9 [* {$ A# X6 D! \3 @( e7 ^* w3 Q! P8 W* i; i% q
set-plot-x-range 0 xmax
" N, Y' d- x/ Y+ E5 X' {* t

. e  g8 b: K4 n$ m) eset-plot-y-range 0.0 ymax
9 Q% [% ~- r; @% F# k1 ~+ A
end
: I# H. {: x+ O& t# N' E9 H
+ h8 E" T' j! A7 u% Cto do-plots) t9 j2 n+ H% u5 l( ]; ]7 ?* e! i
set-current-plot "Trends-of-Local-reputation"4 U7 \0 F% h( l. R
set-current-plot-pen "Honest service"
( I% u) X7 o% pend, T: `: X& `1 }6 Y5 x- |

5 A. ~5 _6 @1 s# Q& F# 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.+ U7 [1 o; v. D5 f- u
5 z" @: E4 l5 k; ?2 E8 j. O
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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